JP6640954B2 - Power control system, control device, and power control method - Google Patents

Description

The present invention, power control system, to control apparatus and power control method.

  In recent years, in order to save energy and cost, and to strengthen BCP (Business Continuity Plan), it has its own backup power supply, and it saves power by peak shift, selling electricity to retail electricity companies (including both positive watts and negawatts), and The number of companies, buildings, and the like that operate backup power supply and the like in the event of a power outage by a general power transmission and distribution company is increasing. However, when the electric power consumer installs the standby power supply by himself, there are problems such as securing a space for installing the auxiliary power supply, increasing the burden on the operation of the auxiliary power supply, and securing reliability. On the other hand, there is an electric power interchange system in which customers are connected by an AC (Alternate Current: AC) bus and a DC (Direct Current: DC) bus to supply electric power from a customer of a parent cluster to a customer of a child cluster (for example, And Patent Document 1).

JP-A-2015-177574

  In the conventional power interchange system described above, the customer of the parent cluster serves as a power receiving point of the commercial power system and supplies commercial power to the customer of the child cluster. Therefore, each consumer independently uses commercial power, but does not receive power supply from the standby power supply in an emergency.

In view of the above circumstances, the present invention is, save energy and cost of the electric power consumers utilizing commercial power, the power control system to enable the use of standby power supply while reducing the burden related to BCP, control the control device and a power control method It is intended to provide.

One embodiment of the present invention is a power control system including a power supply source power system, a power customer power system, and a control device, wherein the power control system includes a plurality of the demand home appliances. A power supply system, the power supply source system includes a standby power supply including at least one of a storage battery and an emergency generator, power reception of commercial power, and supply of power output from the standby power supply to the customer power system. And a power supply control unit that controls the power supply control unit, the customer power system includes a power receiving unit that receives commercial power and power supplied from the power supply source system, and a power demand that receives the power received by the power receiving unit. A power distribution unit that supplies power to a house load, wherein the control device supplies power based on a predicted power demand in the customer power system when the commercial power failure occurs. And a control unit that instructs the power supply control unit to supply the power to the customer power system and output the power from the standby power supply to the power supply control unit. When the total power is less than the total, the supply request power set with the guarantee type is satisfied among the supply request powers of the customer power system set with either the guarantee type or the best effort type as the priority. Power supply to the customer power system, and instructs the power supply control unit to output power from the standby power supply according to the determined power supply, and the control unit sets the guarantee type. If the supplied power demand cannot be satisfied, a penalty for failing to satisfy the predetermined required power between the power consumer and the power supply source Total chromatography amount determines the power supplied to the demand consumer electronics power system so that the most lowered.

  One embodiment of the present invention is the above power control system, wherein the power supply control unit further controls supply of commercial power and power output from the standby power supply to a load of the power supply source, The control unit, when a power outage of commercial power occurs, outputs power based on the predicted power demand in the customer power system and the supply source power system from the standby power supply, and outputs the customer power system and the power supply source. The power supply control unit is instructed to supply the power to the load.

  Further, one embodiment of the present invention is the above-described power control system, wherein the control unit is configured to control the power consumer when the amount of power that can be supplied from the standby power source is less than the predicted power demand. Control is performed so as to limit power supply to a load or a part of the load of the power supply source.

  One embodiment of the present invention is the above-described power control system, wherein the power control system includes a plurality of the supply source power systems, and the control unit includes a plurality of the supply source power systems. The power supply source system that supplies power to each of the customer power systems is determined based on the amount of power that can be supplied from a standby power supply and the predicted power demand in each of the one or more customer power systems. .

  Further, one aspect of the present invention is the above-described power control system, wherein the control unit always outputs the power output from the standby power supply to the customer power system and The power supply control unit is instructed to supply the power to at least one of the loads of the power supply source or to transmit the power to a power network for selling power.

  One embodiment of the present invention is the above-described power control system, wherein the control unit is configured to control the amount of power required for an emergency in the power stored in the storage battery at all times when a commercial power outage does not occur. The surplus power after securing the power is supplied to at least one of the customer power system and the load of the power supply source, or the power supply control unit is instructed to transmit the power to a power network for power sale. .

One embodiment of the present invention is the above-described power control system, wherein the control unit may calculate the power for the emergency necessary based on predetermined information.
Further, one embodiment of the present invention is the above-described power control system, wherein the control unit is configured to calculate the predicted power demand and a predicted time required for a maintenance person to move to a location of the supply source power system. Based on the above, the power required for the emergency is calculated.

  One embodiment of the present invention is the above-described power control system, wherein the power receiving unit receives power supplied from the power supply source system by one or both of AC and DC.

  One embodiment of the present invention is the above-described power control system, wherein the control unit calculates the predicted power demand, past, present and predicted power consumption of the load and weather information, and time information. Is calculated based on at least a part of the information.

One embodiment of the present invention is the control device in a power control system including a power supply source power system, a power customer power system, and a control device, wherein the power control system includes: A plurality of the customer power systems, the control device, when a power outage of commercial power occurs, the power based on the predicted power demand in the customer power system, at least one of a storage battery or an emergency generator A control unit that instructs the supply source power system to output from the backup power supply and supply the power to the customer power system, wherein the control unit is configured to predict the amount of power that can be supplied from the backup power supply to the supply destination. If the total power demand is less than the total, the customer power system of the guarantee type or the best effort type is set as the priority. Among the required supply powers, the supply power to the customer power system is determined so as to satisfy the required supply power set by the guarantee type, and the standby power supply outputs power according to the determined supply power. And instructs the power supply source system so that the control unit determines a predetermined required power between the power demander and the power supply source when the power supply demand set in the guarantee type cannot be satisfied. The power supply to the customer power system is determined so that the sum of the penalty amounts when the sufficient power cannot be provided is minimized .

One embodiment of the present invention is a power control method executed in a power control system having a power supply source power system, a power customer power system, and a control device, wherein the power control method includes: The control system has a plurality of the customer power systems, and the supply source power system receives the commercial power and the demand for the power output from the standby power supply including at least one of a storage battery or an emergency generator. A power supply control step of controlling supply to the home power system, wherein the customer power system receives commercial power and power supplied from the supply source power system, and loads the received power on the load of the power customer. Receiving the power to the power system, and the control device, when a power failure occurs in the commercial power, generates the power based on the predicted power demand in the customer power system. And a supply instruction step of instructing the power control system to output the power from the power supply and supply the power to the consumer power system.In the supply instruction step, the amount of power that can be supplied from the standby power supply is If the total of the predicted power demands is less than the total, the guarantee type is set among the supply request powers of the customer power system in which either the guarantee type or the best effort type is set as the priority. said supply required power to determine the power supplied to the demand consumer electronics power system to satisfy, the standby power supply is instructed to the power control system to output a power according to the supply electric power set, said supply instruction step was In the case where the supply request power set with the guarantee type cannot be satisfied, the power consumer and the power Determining the power supplied to the demand consumer electronics power system so that the total penalty amount when no be covered a predetermined power required was becomes the lowest between the supply source.

  Advantageous Effects of Invention According to the present invention, it is possible to use a backup power supply while reducing the energy and cost savings of a power consumer using a commercial power supply and the burden on BCP.

FIG. 1 is a functional block diagram illustrating a configuration of a power control system according to a first embodiment of the present invention. It is a functional block diagram showing the composition of the power control system by a 2nd embodiment. It is a functional block diagram showing the composition of the power control system by a 3rd embodiment. It is a figure showing the operation outline of the power control system by a 4th embodiment. FIG. 2 is a functional block diagram illustrating a configuration of a power control system according to the embodiment. It is a figure showing the contract condition of the electric power consumer by the embodiment. It is a figure which shows the example of an electric power supply to the electric power consumer in an emergency at the electric power peak time of the electric power control system by the embodiment. It is a figure which shows the example of an electric power supply to the electric power consumer in an emergency at the electric power off-peak time of the electric power control system by the embodiment. FIG. 3 is a flowchart showing an emergency power supply process in the power control system according to the embodiment. It is a figure showing the operation outline of the power control system by a 5th embodiment. FIG. 2 is a functional block diagram illustrating a configuration of a power control system according to the embodiment. It is a figure showing the operation outline of the power control system by a 6th embodiment. FIG. 2 is a functional block diagram illustrating a configuration of a power control system according to the embodiment. It is a figure for explaining an example of storage battery management in a power control system by the embodiment. It is a flowchart which shows the storage battery management process linked with the maintenance person real-time position information in the electric power control system by the embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
In the present embodiment, a power consumer such as a company or a building outsources the operation of a standby power supply used for energy saving, cost saving, and enhancement of a BCP (business continuity plan) to a power supply source of another company or a building. Source. This backup power source can also be used at the power supply source. In the present embodiment, a power supply source and a power consumer are connected on a one-to-one basis.

  FIG. 1 is a functional block diagram illustrating a configuration of a power control system 10 according to a first embodiment of the present invention, in which only functional blocks related to the present embodiment are extracted and shown. The power control system 10 includes a power supply source power system 20, a power customer power system 30, and a control device 40 that controls the power supply system 20 and the power system 30. The power supply source system 20 is provided in a facility such as a building of a power supply source serving as a power supply base, and the customer power supply system 30 is provided in a facility such as a building of a power customer serving as a power demand base.

  The power source power system 20 and the customer power system 30 are connected by an AC network 51 and a DC network 52. Note that the power source power system 20 and the customer power system 30 may be connected by only the AC network 51 or only the DC network 52. The AC network 51 is, for example, a power network of a general power transmission and distribution company, and is a power network through which AC power flows. When the AC network 51 is an AC power network independently laid by a company other than a general power transmission and distribution company, the power supply source system 20 and the customer power system 30 have different AC from the AC network 51. Commercial power is supplied by the grid. The DC system network 52 is a power network through which DC power flows, and is a power transmission network laid by a general power transmission and distribution company or a self-owned line network laid between a power supply source and a power consumer. The control device 40 communicates with the power supply source system 20 and the customer power system 30 via the communication network 53. The communication network 53 may be wired or wireless.

  The source electric power system 20 includes a generator 201, an emergency generator 202, a storage battery 203, an AC power flow control device 211, a power receiving device 212, a power distribution device 213, a DC power supply device 214, a power distribution device 215, a DC power flow control device 216, a load. 221 and a load 222.

  The generator 201 is, for example, a solar power generator, a wind power generator, or the like, and is a generator that performs private power generation at all times and in an emergency. The emergency power generator 202 is, for example, a fuel cell, an engine power generator, or the like, and is a power generator that performs private power generation in an emergency. The generator 201 and the emergency generator 202 are connected to the power distribution device 213 or the power receiving device 212. Hereinafter, a case where the power generator 201 and the emergency power generator 202 are connected to the power distribution device 213 will be described as an example. The storage battery 203 is, for example, a secondary battery such as a lithium ion battery, and stores commercial power, power generated by the generator 201, and power generated by the emergency generator 202.

  The AC power flow control device 211, according to the instruction of the control device 40, receives the supply of the commercial power from the AC network 51 or transmits the AC power received from the power receiving device 212 to the AC network 51 to determine the power flow of the AC power. Perform switching. The power transmission to the AC network 51 is performed when power is supplied to the customer power system 30 for an emergency or energy saving, or when power is sold to a retail power company or the like.

  When the AC power flow control device 211 receives commercial power, the power receiving device 212 converts the voltage of the commercial power received from the AC power flow control device 211 and transmits the converted power to the power distribution device 213. When the AC power flow control device 211 transmits AC power to the AC grid 51, the power receiving device 212 converts the voltage of the AC power received from the power distribution device 213 and transmits the converted power to the AC power flow control device 211.

  The power distribution device 213 branches the power. The power distribution device 213 receives the power generated by the generator 201 and the emergency generator 202. When the AC power flow control device 211 is receiving commercial power, the power distribution device 213 further performs reception of AC power from the power receiving device 212 and power transmission to the load 221 and the DC power supply device 214. Is transmitting the AC power, the AC power from the DC power supply device 214 and the power transmission to the load 221 and the power receiving device 212 are further performed. In addition, the power distribution device 213 receives an instruction from the control device 40 and performs load suppression control to stop or suppress power supply to some loads 221.

  DC power supply 214 converts the power received from power distribution device 213 from AC to DC, and transmits the power to power distribution device 215 or to power distribution device 215 and storage battery 203. The DC power supply 214 converts the power discharged from the storage battery 203 into AC and transmits the converted power to the power distribution device 213, and transmits the power to the power distribution device 215 as it is in the DC state. Note that the DC power supply 214 includes a configuration in which bidirectional power supply is possible by connecting in parallel a device for converting DC to AC in addition to a device for converting AC to DC. The amount of power transmitted from DC power supply 214 to power distribution device 215 is the total amount of power consumed by load 222 and DC power supplied to customer power system 30 via DC network 52. .

  The power distribution device 215 branches power. The power distribution device 215 supplies the DC power received from the DC power supply device 214 to the load 222, and furthermore, when the supply source power system 20 supplies the DC power to the customer power system 30, The received DC power is transmitted to the DC power flow control device 216. Further, the power distribution device 215 receives an instruction from the control device 40 and performs load suppression control for stopping power supply to some of the loads 222.

  The DC power flow control device 216 switches whether to supply the DC power output from the power distribution device 215 to the customer power system 30 according to an instruction from the control device 40. The DC power from the DC power flow control device 216 is supplied to the customer power system 30 via the DC network 52.

  The load 221 is a device that operates on AC power, and the load 222 is a device that operates on DC power.

The customer power system 30 includes a power receiving device 311, a power distribution device 312, a DC power supply 313, a power distribution device 314, a load 321, and a load 322.
When detecting the supply of power from the AC network 51, the power receiving device 311 converts the voltage of the AC power supplied from the AC network 51 and outputs the voltage to the power distribution device 312. In addition, the power receiving device 311 detects a stop or restart of the power supply from the AC network 51 and notifies the control device 40.

  The power distribution device 312 branches the power. The power distribution device 312 receives AC power from the power receiving device 311 and transmits the power to the DC power supply device 313 and the load 321. When the power distribution device 312 cannot receive the AC power from the AC network 51 or when the AC power received from the AC network 51 is lower than the power consumption by the load 321, the power distribution device 312 supplies the AC power from the DC power supply 313. Power is received and transmitted to the load 321. The power distribution device 312 receives an instruction from the control device 40 and performs load suppression control for stopping power supply to some of the loads 321.

  The DC power supply device 313 converts the power received from the power distribution device 312 from AC to DC, and transmits the power to the power distribution device 314. Further, DC power supply device 313 converts the power received from power distribution device 314 from DC to AC, and transmits the power to power distribution device 312.

  The power distribution device 314 branches the power. Further, the power distribution device 314 receives an instruction from the control device 40 and performs load suppression control for stopping power supply to some of the loads 322. The power distribution device 314 includes a switching device 315. The switching device 315 receives an instruction from the control device 40 and supplies the DC power received from the DC power supply 313 to the load 322 or the DC power supplied from the power supply source system 20 via the DC network 52. The power supply to the DC power supply 313 and the load 322 is switched.

  Note that the customer power system 30 may include a generator that performs private power generation, such as a solar power generator or a wind power generator. In this case, the generator transmits the generated power to the power distribution device 312 or the power receiving device 311.

  The control device 40 includes an information collection unit 401, an information storage unit 402, and a control unit 403. The information collecting unit 401 collects status information indicating the status of each monitoring item from the power supply source system 20 and the customer power system 30. The information collection unit 401 also collects information on weather (temperature and humidity), information on a transaction price at the time of selling electric power, and the like from an external device (not shown). The information storage unit 402 stores log data that is a history of the state information collected by the information collection unit 401 and a history of information collected from an external device. The log data includes system identification information that specifies the system from which the status information is collected, status information collected from the source power system 20 or the customer power system 30 specified by the system identification information, and status information. This is information that is associated with time information indicating the time at which the event has occurred.

  The information collection unit 401 periodically acquires, for example, some or all of the following state information. Note that the time at which the information collection unit 401 collects each state information and the length of the collection cycle may be different.

(1) The amount of commercial power received by the source power system 20 and the amount of power transmitted from the source power system 20 to the AC network 51. For example, such information is obtained from the AC power flow control device 211 of the power supply source system 20.
(2) The amount of power generated by each of the generator 201 and the emergency generator 202. For example, such information is obtained from each of the generator 201 and the emergency generator 202 or from the power distribution device 213.
(3) Power consumption of the load 221 and the load 222. For example, these pieces of information are obtained from the power distribution devices 213 and 215, respectively.
(4) The amount of charge and the amount of discharge in the storage battery 203. For example, such information is obtained from the storage battery 203 and the DC power supply 214.
(5) The amount of power transmitted from the source power system 20 to the DC network 52. For example, this information is obtained from the DC power flow controller 216.
(6) The amount of AC power received in the customer power system 30. For example, this information is obtained from the power receiving device 311.
(7) Power consumption of the load 321 and the load 322. For example, these pieces of information are obtained from the power distribution devices 312 and 314, respectively.
(8) The amount of DC power received by the customer power system 30. For example, this information is obtained from the power distribution device 314.
(9) When the customer power system 30 includes a generator, the power generation amount. For example, this information is obtained from a generator or power distribution device 312.

  In addition, the information collection unit 401 uses the supply source power system 20 and the customer power system 30 as status information to generate AC power outage (stop power supply from the AC network 51) and to restore AC power ( (Resumption of power supply from the AC network 51). When the AC network 51 is an AC power network independently laid by the power supply source and the power consumer, the information collection unit 401 sends the AC power network 51 from the power supply source system 20 and the customer power system 30. It receives notification of state changes, such as the occurrence of a power outage in an AC system network (power network of a general power transmission and distribution company) to which commercial power is supplied, and the restoration of AC power. Further, the control device 40 receives, from the customer power system 30, notification of the start or stop of the reception of DC power via the DC network 52 as state information.

  The control unit 403 is based on the status information notified by the information collection unit 401, information collected from external devices, time, information stored in the information storage unit 402, and the like. Control the force system 30. Specifically, the control unit 403 transmits a control signal to the supply source power system 20 and the customer power system 30, and performs at least a part of the following control.

(1) Switching between the reception of commercial power and the transmission to the AC network 51 in the AC power flow control device 211, and the voltage at the time of power reception or power transmission.
(2) Power generation of the power generator 201 and power generation stop. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(3) Power generation of the emergency generator 202 and power generation stop. When the amount of power generated by the emergency generator 202 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(4) Storage and discharge of the storage battery 203. If the amount of discharge by the storage battery 203 can be controlled, the amount of discharge is also instructed along with the instruction to discharge.
(5) Transmission of power to the DC grid 52 and suspension of power transmission in the DC power flow control device 216. When instructing power transmission, the voltage at the time of power transmission is also specified.
(6) Instructions for load suppression and power consumption limit values for the power distribution devices 213 and 215.
(7) Instruction for load suppression and power consumption limit value for the power distribution devices 312 and 314.
(8) Switching between DC power receiving from DC system network 52 and power receiving stop in power distribution device 314.

  When the AC system network 51 is a power network of a general power transmission and distribution company, the control unit 403 sends the AC power flow control device 211 to the AC power flow control device 211 in order to supply power from the supply source power system 20 to the customer power system 30. When instructing the transmission of power to the AC network 51 through the AC power supply network 51, the power supply route to the customer power system 30 is changed from the commercial power supply route to the AC power supply network Instructs to switch to the power supply route.

Next, an operation example of the power control system 10 will be described. The following case is an example, and another control may be performed on the supply source power system 20 and the customer power system 30.
First, with respect to the cases shown in Table 1, an example of control and operation of the supply source power system 20 will be described.

<Case A1-1. When the power supply source receives commercial power at all times and does not perform power storage and power supply to power consumers>
The control unit 403 of the control device 40 controls the power supply source system 20 as follows.
(1) Instruct the AC power flow control device 211 to receive power and voltage of the commercial power supply.
(2) Instruct power generation of the power generator 201 or stop power generation. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(3) Instruct the emergency generator 202 to stop generating power.
(4) Instructing the storage battery 203 to stop charging and discharging.
(5) Instruct the DC power flow control device 216 to stop transmitting power to the DC network 52.
(6) There is no load suppression instruction to the power distribution devices 213 and 215.

The source power system 20 operates as follows.
The AC power flow control device 211 transmits the commercial power received from the AC network 51 to the power receiving device 212 according to the voltage specified by the supply power system 20. The power receiving device 212 transmits the commercial power received from the AC power flow control device 211 to the power distribution device 213. The generator 201 supplies the generated power to the power distribution device 213 when the control device 40 instructs power generation. The power distribution device 213 transmits power received from the power receiving device 212 or from the generator 201 and the power receiving device 212 to the DC power supply device 214 and the load 221. The DC power supply 214 converts the power received from the power distribution device 213 from AC to DC and outputs the power to the power distribution device 215. The power distribution device 215 supplies the DC power received from the DC power supply 214 to the load 222.

<Case A1-2. In the case where the power supply source always stores commercial power while receiving power and does not supply power to power consumers>
The control unit 403 of the control device 40 controls the supply source power system 20 in the same manner as in the case A1-1 except that the storage unit 203 is instructed to store power. The source electric power system 20 operates similarly to the case A1-1 except for the following operation. That is, DC power supply device 214 converts the power received from power distribution device 213 from AC to DC, transmits the power consumed by load 222 to power distribution device 215, and stores the surplus power in storage battery 203.

<Case A2-1. The power supply source always supplies the stored power to the power consumers in the form of an AC or sells it to retail electricity providers etc.>
The control unit 403 of the control device 40 controls the power supply source system 20 as follows.
(1) Instruct the AC power flow control device 211 to transmit power and voltage to the AC network 51.
(2) Instruct power generation of the power generator 201 or stop power generation. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(3) Instruct the emergency generator 202 to stop generating power.
(4) When the discharge of the storage battery 203 and the discharge amount can be controlled, the discharge amount is indicated.
(5) Instruct the DC power flow control device 216 to stop transmitting power to the DC network 52.
(6) There is no load suppression instruction to the power distribution devices 213 and 215.

The source power system 20 operates as follows.
The DC power supply 214 supplies the DC power discharged from the storage battery 203 to the power distribution device 215, converts the remaining power into AC, and transmits the power to the power distribution device 213. The power distribution device 215 supplies the DC power received from the DC power supply 214 to the load 222. The generator 201 transmits the generated power to the power distribution device 213 when power generation is instructed by the control device 40. The power distribution device 213 supplies the power received from the DC power supply device 214 or from the DC power supply device 214 and the generator 201 to the load 221, and transmits the remaining power to the power receiving device 212. Power receiving device 212 outputs the power received from power distribution device 213 to AC power flow control device 211, and AC power flow control device 211 transmits the power received from power receiving device 212 to AC network 51.

<Case A2-2. Always supply the power stored by the power supply source to the power consumers as DC>
The control unit 403 of the control device 40 controls the power supply source system 20 as follows.
(1) Instruct the AC power flow control device 211 to receive power and voltage of the commercial power supply.
(2) Instruct power generation of the power generator 201 or stop power generation. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(3) Instruct the emergency generator 202 to stop generating power.
(4) When the discharge of the storage battery 203 and the discharge amount can be controlled, the discharge amount is indicated.
(5) Instruct the DC power flow controller 216 to transmit power and voltage to the DC grid 52.
(6) There is no load suppression instruction to the power distribution devices 213 and 215.

The source power system 20 operates as follows.
The AC power flow control device 211 transmits the commercial power received from the AC network 51 to the power receiving device 212. The power receiving device 212 transmits the commercial power received from the AC power flow control device 211 to the power distribution device 213. The generator 201 transmits the generated power to the power distribution device 213 when power generation is instructed by the control device 40. The power distribution device 213 outputs the commercial power received from the power receiving device 212 and the power generated by the generator 201 to the DC power supply device 214 and the load 221. The DC power supply device 214 receives power from the power distribution device 213 and transmits the power converted into DC and the DC power discharged from the storage battery 203 to the power distribution device 215. The power distribution device 215 transmits the DC power received from the DC power supply device 214 to the load 222, and transmits the remaining power to the DC power flow control device 216. The DC power flow control device 216 transmits the DC power received from the power distribution device 215 to the DC system network 52.

<Case A2-3. Always supply the power stored by the power supply source to power consumers in AC and DC>
The control unit 403 of the control device 40 controls the power supply source system 20 as follows.
(1) Instruct the AC power flow control device 211 to transmit power and voltage to the AC network 51.
(2) Instruct power generation of the power generator 201 or stop power generation. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(3) Instruct the emergency generator 202 to stop generating power.
(4) When the discharge of the storage battery 203 and the discharge amount can be controlled, the discharge amount is indicated.
(5) Instruct the DC power flow controller 216 to transmit power and voltage to the DC grid 52.
(6) There is no load suppression instruction to the power distribution devices 213 and 215.

The source power system 20 operates as follows.
When power generation is instructed by the control device 41, the power generator 201 transmits the generated power to the power distribution device 213. The power distribution device 213 supplies the power received from the generator 201 to the load 221, and transmits the remaining power to the power receiving device 212 and the DC power supply device 214. Power receiving device 212 outputs the power received from power distribution device 213 to AC power flow control device 211, and AC power flow control device 211 transmits the power received from power receiving device 212 to AC network 51.

  The DC power supply device 214 receives power from the power distribution device 213 and transmits the power converted into DC and the DC power discharged from the storage battery 203 to the power distribution device 215. The power distribution device 215 transmits the DC power received from the DC power supply device 214 to the load 222, and transmits the remaining power to the DC power flow control device 216. The DC power flow control device 216 transmits the DC power received from the power distribution device 215 to the DC system network 52.

  When the amount of power discharged from the storage battery 203 is larger than the sum of the amount of power consumed by the load 222 and the amount of power supplied to the customer power system 30 by DC, the DC power supply 214 The remaining transmitted power is converted into AC and transmitted to the power distribution device 213. The power distribution device 213 supplies the power received from the generator 201 and the DC power supply device 214 to the load 221, and transmits the remaining power to the power receiving device 212.

<Case A3-1. In the event of an emergency, power is supplied from the power supply source to the power consumer in an alternating manner>
The control unit 403 of the control device 40 controls the power supply source system 20 as follows.
(1) Instruct the AC power flow control device 211 to transmit power and voltage to the AC network 51.
(2) Instruct power generation of the power generator 201 or stop power generation. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(3) When the power generation and the power generation amount of the emergency power generator 202 can be controlled, at least one of the power generation amount and when the discharge and the discharge amount of the storage battery 203 can be controlled, the discharge amount is designated.
(4) There is no load suppression instruction to the power distribution devices 213 and 215, or a load suppression and power consumption limit value.
(5) Instruct the DC power flow control device 216 to stop transmitting power to the DC network 52.

The source power system 20 operates as follows.
When load control is instructed from the control device 40, the power distribution devices 213 and 215 stop supplying power to some of the loads 221 and 222 according to the power consumption limit value. Note that, instead of the power consumption limit value, the control device 40 may instruct the load 221 and the load 222 whose power supply is to be permitted or restricted.

  When control device 40 instructs discharge of storage battery 203, DC power supply device 214 transmits the DC power discharged from storage battery 203 to power distribution device 215, converts the remaining power to AC, and transmits the power to power distribution device 213. . The power distribution device 215 supplies the DC power received from the DC power supply 214 to the load 222 to which power is to be supplied. When power generation is instructed from the control device 40, the power generator 201 and the emergency power generator 202 transmit the generated power to the power distribution device 213. The power distribution device 213 supplies the power received from the power generator 201, the emergency power generator 202, and the DC power supply device 214 to the load 221 to be supplied with power, and transmits the remaining power to the power receiving device 212. Power receiving device 212 outputs the power received from power distribution device 213 to AC power flow control device 211, and AC power flow control device 211 transmits the power received from power receiving device 212 to AC network 51.

<Case A3-2. Supplying electricity stored by the electricity supplier in the event of an emergency to the electricity consumers as DC>
The control unit 403 of the control device 40 controls the power supply source system 20 as follows.
(1) Instruct the AC power flow control device 211 to receive power and voltage of the commercial power supply.
(2) Instruct power generation of the power generator 201 or stop power generation. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(3) When the power generation and the power generation amount of the emergency power generator 202 can be controlled, at least one of the power generation amount and when the discharge and the discharge amount of the storage battery 203 can be controlled, the discharge amount is designated.
(4) There is no load suppression instruction to the power distribution devices 213 and 215, or a load suppression and power consumption limit value.
(5) Instruct the DC power flow controller 216 to transmit power and voltage to the DC grid 52.

The source power system 20 operates as follows.
When load control is instructed from the control device 40, the power distribution devices 213 and 215 stop supplying power to some of the loads 221 and 222 according to the power consumption limit value. When power generation is instructed from the control device 40, the power generator 201 and the emergency power generator 202 transmit the generated power to the power distribution device 213. When control device 40 instructs discharge of storage battery 203, DC power supply device 214 receives the DC power discharged from storage battery 203.

  The AC power flow control device 211 transmits the commercial power received from the AC network 51 to the power receiving device 212. The power receiving device 212 transmits the commercial power received from the AC power flow control device 211 to the power distribution device 213. The power distribution device 213 outputs the commercial power received from the power receiving device 212 and the power generated by each of the power generator 201 and the emergency power generator 202 to the DC power supply 214 and the load 221 to be supplied with power. DC power supply device 214 outputs to power distribution device 215 the power discharged from storage battery 203 and the power received from power distribution device 213 and converted to DC. The power distribution device 215 transmits the DC power received from the DC power supply device 214 to the load 222 to which power is to be supplied, and transmits the remaining power to the DC power flow control device 216. The DC power flow control device 216 transmits the DC power received from the power distribution device 215 to the DC system network 52. The customer power system 30 receives DC power from the supply power system 20 via the DC network 52.

<Case A3-3. Supplying power from power supply sources to power consumers in AC and DC>
The control unit 403 of the control device 40 controls the power supply source system 20 as follows.
(1) Instruct the AC power flow control device 211 to transmit power and voltage to the AC network 51.
(2) Instruct power generation of the power generator 201 or stop power generation. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(3) When the power generation and the power generation amount of the emergency power generator 202 can be controlled, at least one of the power generation amount and when the discharge and the discharge amount of the storage battery 203 can be controlled, the discharge amount is instructed.
(4) There is no load suppression instruction to the power distribution devices 213 and 215, or a load suppression and power consumption limit value.
(5) Instruct the DC power flow controller 216 to transmit power and voltage to the DC grid 52.

The source power system 20 operates as follows.
When load control is instructed from the control device 41, the power distribution devices 213 and 215 stop supplying power to some of the loads 221 and 222 according to the power consumption limit value. When power generation is instructed from the control device 41, the power generator 201 and the emergency power generator 202 transmit the generated power to the power distribution device 213. The power distribution device 213 supplies the power received from the power generator 201 and the emergency power generator 202 to the load 221 to be supplied with power, and transmits the remaining power to the power receiving device 212 and the DC power supply device 214. Power receiving device 212 outputs the power received from power distribution device 213 to AC power flow control device 211, and AC power flow control device 211 transmits the power received from power receiving device 212 to AC network 51.

  DC power supply device 214 converts the power received from power distribution device 213 from AC to DC, and further receives DC power discharged from storage battery 203 when control device 41 instructs discharge of storage battery 203. The DC power supply 214 transmits DC power to the power distribution device 215. The power distribution device 215 transmits the DC power received from the DC power supply device 214 to the load 222 to which power is to be supplied, and transmits the remaining power to the DC power flow control device 216. The DC power flow control device 216 transmits the DC power received from the power distribution device 215 to the DC system network 52.

  If the amount of power discharged from the storage battery 203 is larger than the sum of the power consumption of the load 222 to be supplied with power and the power supplied to the customer power system 30 by DC, the DC power supply 214 The remaining power transmitted to the power distribution device 215 is converted into AC and transmitted to the power distribution device 213. The power distribution device 213 supplies the power received from the generator 201, the emergency generator 202, and the DC power supply device 214 to the load 221 and transmits the remaining power to the power receiving device 212.

  Next, with respect to the cases shown in Table 2, an example of control and operation of the customer power system 30 will be described.

<Case B1-1. Electricity consumers always use commercial power>
The supply source power system 20 operates as in cases A1-1 and A1-2. The control unit 403 of the control device 40 controls the customer power system 30 as follows.

(1) There is no load suppression instruction to the power distribution devices 312 and 314.
(2) Instruct the power distribution device 314 to stop receiving DC power from the DC network 52.
(3) There is no load control instruction to the power distribution devices 312 and 314.

The customer power system 30 operates as follows.
The power receiving device 311 transmits the AC power received from the AC network 51 to the power distribution device 312. The power distribution device 312 transmits the AC power received from the power receiving device 311 to the DC power supply device 313 and the load 321. The DC power supply 313 converts the power received from the power distribution device 312 from AC to DC, and transmits the power to the power distribution device 314. The switching device 315 of the power distribution device 314 supplies the power received from the DC power supply 313 to the load 322.

  When the AC network 51 is different from the AC power network of the commercial power, the control unit 403 of the control device 40 controls the power receiving device 311 of the customer power system 30 to receive power from the AC power network of the commercial power. To instruct. The power receiving device 311 of the customer power system 30 switches to receiving commercial power according to an instruction from the control device 40.

<Case B2-1. Electricity consumers always receive power supplied from the power supply source with AC>
The source electric power system 20 operates as in case A2-1. The control of the customer power system 30 by the control unit 403 of the control device 40 and the operation of the customer power system 30 are the same as in the case B1-1. When the AC network 51 is different from the AC network of commercial power, the control unit 403 of the control device 40 instructs the power receiving device 311 of the customer power system 30 to receive power from the AC network 51. . The power receiving device 311 of the customer power system 30 switches to receiving power from the AC network 51 according to an instruction from the control device 40.

<Case B2-2. Power consumers always receive power supplied from power supply sources as DC>
The power supply system 20 operates as in case A2-2. The control unit 403 of the control device 40 controls the customer power system 30 as follows.

(1) There is no load suppression instruction to the power distribution devices 312 and 314.
(2) Instruct the power distribution device 314 to receive DC power from the DC network 52.
(3) There is no load control instruction to the power distribution devices 312 and 314.

The customer power system 30 operates as follows.
The power receiving device 311 transmits the AC power received from the AC network 51 to the power distribution device 312. The power distribution device 312 transmits the AC power received from the power receiving device 311 to the DC power supply device 313 and the load 321. The DC power supply 313 converts the power received from the power distribution device 312 from AC to DC, and transmits the power to the power distribution device 314. The switching device 315 of the power distribution device 314 transmits the power received from the DC power supply device 313 and the DC power received from the DC network 52 to the load 322.

  When the power received from the DC network 52 is larger than the power consumption in the load 322, the switching device 315 of the power distribution device 314 transmits the DC power received from the DC network 52 to the load 322 and the DC power supply 313. . The DC power supply 313 converts the power received from the power distribution device 314 from DC to AC, and outputs the power to the power distribution device 312. The power distribution device 312 supplies the power received from the DC power supply 313 and the power received from the power receiving device 311 to the load 321.

  When the AC network 51 is different from the AC power network of the commercial power, the control unit 403 of the control device 40 controls the power receiving device 311 of the customer power system 30 to receive power from the AC power network of the commercial power. To instruct. The power receiving device 311 of the customer power system 30 switches to receiving commercial power according to an instruction from the control device 40.

<Case B2-3. Power consumers always receive power supplied from power supply sources in AC and DC>
The supply power system 20 operates as in case A2-3. The control of the customer power system 30 by the control unit 403 of the control device 40 and the operation of the customer power system 30 are the same as those in the case B2-2. When the AC network 51 is different from the AC network of commercial power, the control unit 403 of the control device 40 instructs the power receiving device 311 of the customer power system 30 to receive power from the AC network 51. . The power receiving device 311 of the customer power system 30 switches to receiving power from the AC network 51 according to an instruction from the control device 40.

<Case B3-1. In the event of an emergency, the power consumer receives the power supplied from the power supply source with AC>
When detecting that the supply of the commercial power has been stopped, the power receiving device 311 of the customer power system 30 transitions to the power receiving stop mode and notifies the control device 40 of the stop of the power supply. When the information collection unit 401 of the control device 40 receives the notification, the control unit 403 instructs the power supply power system 20 to supply electric power to the electric power consumer through AC. The power supply system 20 operates, for example, as in the case A3-1.

The control unit 403 of the control device 40 controls the customer power system 30 as follows.
(1) There is no load suppression instruction to the power distribution devices 312 and 314 or a load suppression and power consumption limit value.
(2) Instruct the power distribution device 314 to stop receiving DC power from the DC network 52.

The customer power system 30 operates as follows.
When load control is instructed from the control device 40, the power distribution devices 312 and 314 stop supplying power to some of the loads 321 and 322 according to the power consumption limit value. Note that the control device 40 may instruct, instead of the power consumption limit value, the loads 321 and 322 for which the supply of power is permitted or restricted. When AC network 51 is not an AC network for commercial power, power receiving device 311 switches to power reception from AC network 51 according to an instruction from control device 40.

  Upon detecting power reception from the AC network 51, the power receiving device 311 switches to the power receiving mode, and notifies the control device 40 of power recovery. The power receiving device 311 transmits the received AC power to the power distribution device 312. The power distribution device 312 transmits the AC power received from the power receiving device 311 to the DC power supply device 313 and the load 321 to be supplied with power. The DC power supply 313 converts the power received from the power distribution device 312 from AC to DC, and transmits the power to the power distribution device 314. The switching device 315 of the power distribution device 314 supplies the power received from the DC power supply 313 to the load 322 to be supplied with power.

<Case B3-2. In the event of an emergency, a power consumer receives power supplied from a power supply source as DC>
When detecting that the supply of the commercial power has been stopped, the power receiving device 311 of the customer power system 30 transitions to the power receiving stop mode and notifies the control device 40 of the stop of the power supply. When the information collection unit 401 of the control device 40 receives the notification, the control unit 403 instructs the power supply power system 20 to supply power to the power customers by DC. The supply source power system 20 operates, for example, as in the case A3-2 described above.

  Alternatively, the control unit 403 of the control device 40 controls the supply source power system 20 in case A3-1. The control unit 403 does not notify the power recovery from the power receiving device 311 of the customer power system 30 even after a predetermined time has elapsed after the power supply source system 20 started supplying power to the power customer by AC. In this case, the power supply source system 20 may be instructed to supply electric power to the electric power consumer by DC. The source electric power system 20 operates as in the case A3-2 described above.

The control unit 403 of the control device 40 controls the customer power system 30 as follows.
(1) There is no load suppression instruction to the power distribution devices 312 and 314 or a load suppression and power consumption limit value.
(2) Instruct the power distribution device 314 to receive DC power from the DC network 52.

The customer power system 30 operates as follows.
When load control is instructed from the control device 40, the power distribution devices 312 and 314 stop supplying power to some of the loads 321 and 322 according to the power consumption limit value. The power distribution device 314 receives DC power from the DC network 52, and the switching device 315 transmits the received DC power to the DC power supply 313 and the load 322 to which power is to be supplied. The DC power supply 313 converts the power received from the power distribution device 314 from DC to AC, and outputs the power to the power distribution device 312. The power distribution device 312 supplies the power received from the DC power supply 313 to the load 321 to be supplied with power.

<Case B3-3. In the event of an emergency, a power consumer receives AC and DC power supplied from a power supply source>
When detecting that the supply of the commercial power has been stopped, the power receiving device 311 of the customer power system 30 transitions to the power receiving stop mode and notifies the control device 40 of the stop of the power supply. When the information collection unit 401 of the control device 40 receives the notification, the control unit 403 instructs the power supply power system 20 to supply power to the power consumer using AC and DC. The supply power system 20 operates, for example, as in the case A3-3 described above.

The control unit 403 of the control device 40 controls the customer power system 30 as follows.
(1) There is no load suppression instruction to the power distribution devices 312 and 314 or a load suppression and power consumption limit value.
(2) Instruct the power distribution device 314 to receive DC power from the DC network 52.

The customer power system 30 operates as follows.
When load control is instructed from the control device 40, the power distribution devices 312 and 314 stop supplying power to some of the loads 321 and 322 according to the power consumption limit value. When AC network 51 is not an AC network for commercial power, power receiving device 311 switches to power reception from AC network 51 according to an instruction from control device 40. Upon detecting power reception from the AC network 51, the power receiving device 311 switches to the power receiving mode, and notifies the control device 40 of power recovery.

  The power receiving device 311 transmits the AC power received from the AC network 51 to the power distribution device 312. The power distribution device 312 transmits the AC power received from the power receiving device 311 to the DC power supply device 313 and the load 321 to be supplied with power. The DC power supply 313 converts the power received from the power distribution device 312 from AC to DC, and transmits the power to the power distribution device 314. The switching device 315 of the power distribution device 314 transmits the power received from the DC power supply 313 and the DC power received from the DC network 52 to the load 322 to be supplied with power.

  When the power received from the DC network 52 is larger than the power consumption of the load 322 to be supplied with power, the switching device 315 of the power distribution device 314 converts the DC power received from the DC network 52 into the load 322 to be supplied with power. And to the DC power supply 313. The DC power supply 313 converts the power received from the power distribution device 314 from DC to AC, and outputs the power to the power distribution device 312. The power distribution device 312 supplies the power received from the DC power supply device 313 and the power received from the power receiving device 311 to the load 321 to be supplied with power.

  According to the above-described embodiment, the power consumer can outsource the standby power supply and use the power supplied from the standby power supply without any influence from other power consumers.

[Second embodiment]
In the present embodiment, a power supply source and a power consumer are connected in a one-to-many connection.
FIG. 2 is a functional block diagram showing a configuration of the power control system 11 according to the embodiment of the present embodiment, and only functional blocks related to the present embodiment are extracted and shown. In the figure, the same parts as those of the power control system 10 according to the first embodiment shown in FIG. The power control system 11 includes a supply source power system 20, N (N is an integer of 2 or more) customer power systems 30, and a control device 41. The supply source power system 20 and each customer power system 30 are the same as those in the first embodiment. Hereinafter, the N customer power systems 30 will be referred to as customer power systems 30-1 to 30-N, respectively.

  The supply source power system 20 and each of the customer power systems 30-1 to 30-N are connected by an AC network 51 and a DC network 52. All or a part of the customer power systems 30-1 to 30-N may be connected to the supply power system 20 by only the AC network 51 or the DC network 52. The control device 41 communicates with the supply source power system 20 and the customer power systems 30-1 to 30-N via the communication network 53.

  The control device 41 manages and controls the supply source power system 20 and the customer power systems 30-1 to 30-N. The control device 41 includes an information collection unit 411, an information storage unit 412, and a control unit 413. The information collection unit 411 collects status information indicating the status of each monitoring item from the power source power system 20 and the customer power systems 30-1 to 30-N. The state information collected by the information collection unit 411 from each of the power source power system 20 and the customer power systems 30-1 to 30-N is the same as in the first embodiment. The information collection unit 411 also collects information on weather, information on a transaction price at the time of selling electric power, and the like from an external device (not shown).

  The information storage unit 412 stores log data, which is the history of the state information collected by the information collection unit 411, and the history of information collected from an external device. The log data is obtained from the system identification information, the state information collected from any one of the source power system 20 or the customer power systems 30-1 to 30-N specified by the system identification information, and the state information. This is information that is associated with time information indicating time.

  The control unit 413 controls the power supply source system 20 and the demand home electric appliance based on the status information notified by the information collection unit 411, the information collected from an external device, the time, and the information stored in the information storage unit 412. It controls the force systems 30-1 to 30-N. The control performed by the control unit 413 on the supply source power system 20 and the control performed on the individual customer power systems 30-1 to 30-N are performed by the control unit 403 of the first embodiment. The control performed on the system 20 and the control performed on the customer power system 30 are the same.

  For example, the control unit 413 of the control device 41 always performs one or more customer power systems 30-n (where n is one or more N) among the customer power systems 30-1 to 30-N for energy saving or the like. It is determined that the power stored in the power supply source system 20 is to be supplied to the following integer). The control unit 413 controls the case B1-1 for one or more customer power systems 30-j (j ≠ n, j is an integer of 1 or more and N or less) other than the customer power system 30-n and supplies them. Any of the following (1) to (3) is controlled for the original power system 20 and the customer power system 30-n.

(1) When the control unit 413 determines that the power is to be supplied from the power supply power system 20 by alternating current, the control unit 413 controls the case A2-1 for the power supply power system 20 and the case B2 for the customer power system 30-n. -1 is controlled.
(2) When the control unit 413 determines that the power is to be supplied from the power supply power system 20 by direct current, the control unit 413 controls the case A2-2 to the power supply source system 20 and the case B2 to the customer power system 30-n. -2 is performed.
(3) When the control unit 413 determines that the power is to be supplied from the power supply power system 20 by AC and DC, the control unit 413 controls the case A2-3 to the power supply power supply system 20 and controls the power supply to the customer power system 30-n. Control of case B2-3 is performed.

  In the case where the AC network 51 is the power network of a general power transmission and distribution company, the control unit 413 controls the AC network 51 for the customer power system 30- when performing the control of (1) or (3). n is switched from the commercial power supply route to the power supply route from the power supply source system 20.

  When the AC system network 51 is not a power network of a general power transmission and distribution company (commercial power), when performing the control of (1) or (3), the control unit 413 controls the power receiving device of the customer power system 30-n. Instructs 311 to receive power from the AC network 51, which is the power supply route from the power supply source system 20. The power receiving device 311 of the customer power system 30 switches power reception from the power network of the general power transmission and distribution company (commercial power) to power reception from the AC network 51 according to an instruction from the control device 41.

  In the present embodiment, there may be a case where the customer power system 30-n that receives power supply from the supply power system 20 with only AC, only DC, or AC and DC is mixed. In this case, the control unit 413 controls the case A2-3 for the supply source power system 20, controls the case B2-1 for the customer power system 30-n that receives power supply only with AC, and controls only case DC2. The control of the case B2-2 is performed for the customer power system 30-n that receives the power supply in the above, and the case B2-3 is controlled for the customer power system 30-n that receives the power supply of the AC and the DC.

  Further, for example, the control unit 413 of the control device 41 supplies commercial power to one or more customer power systems 30-n (n is an integer of 1 or more and N or less) among the customer power systems 30-1 to 30-N. The supply to the commercial power is continued in one or more customer power systems 30-j (j ≠ n, j is an integer of 1 or more and N or less) other than the customer power system 30-n. To detect that The control unit 413 controls the case B1-1 for the customer power system 30-j, and provides the following (1) to (3) for the supply source power system 20 and the customer power system 30-n. Is performed.

(1) When the control unit 413 determines that the power is to be supplied from the supply power system 20 by AC, the control unit 413 controls the case A3-1 for the supply power system 20 and the case B3 for the customer power system 30-n. -1 is controlled.
(2) When the control unit 413 determines that the power is to be supplied from the supply power system 20 by DC, the control unit 413 controls the case A3-2 to the supply power system 20 and the case B3 to the customer power system 30-n. -2 is performed.
(3) When the control unit 413 determines that the power is to be supplied from the power supply power system 20 by AC and DC, the control unit 413 controls the power supply power supply system 20 in the case A3-3 and controls the power supply to the power supply system 30-n. Control of case B3-3 is performed.

  In the present embodiment, similarly to the above-described usual case, even in an emergency, only the AC, only the DC, or the customer power system 30-n that receives the power supply from the power source power system 20 with the AC and DC is used. May be mixed. In this case, the control unit 413 performs the control of the case A3-3 for the supply source power system 20, the control of the case B3-1 for the customer power system 30-n that receives the power supply only by the AC, and the control of the case B3-1 only. The control of the case B3-2 is performed for the customer power system 30-n that receives the power supply in the above, and the case B3-3 is controlled for the customer power system 30-n that receives the power supply of the AC and the DC. An example of a specific control will be described below.

  Control unit 413 detects that supply of commercial power to customer power systems 30-1 to 30-i (i is an integer of 2 or more and N-1 or less) has stopped. The customer power systems 30-1 to 30-i are connected to the supply power system 20 via an AC network 51 and a DC network 52. In this case, control unit 413 controls supply source power system 20 in case A3-1, controls customer power systems 30-1 to 30-i in case B3-1, and controls customer power system 30- (i + 1). ) To 30-N are controlled in case B1-1. Then, the control unit 413 starts the control of the case B3-2 for the customer power system 30 that cannot receive the AC power among the customer power systems 30-1 to 30-i. Control of case A3-3 is started for the system 20.

  Further, the customer power systems 30-1 to 30-i may include the customer power system 30 connected to the supply source power system 20 only with the AC network 51 or only with the DC network 52. . In this case, the control unit 413 controls the customer power system 30 connected to the supply source power system 20 by the AC network 51 and the DC network 52 among the customer power systems 30-1 to 30-i. The case B3-1 or B3-2 or B3-3 is controlled, and the case B3-1 is controlled for the customer power system 30 connected to the supply power system 20 only by the AC network 51, Case B3-2 is controlled for the customer power system 30 connected to the supply power system 20 only by the DC network 52. The control unit 413 controls the case A3-3 for the power supply source system 20.

  According to the present embodiment, since a plurality of power consumers share the standby power supply, it is possible to supply power to the plurality of power consumers from the standby power supply of one power supply source at low cost.

[Third Embodiment]
In the present embodiment, each of a plurality of power supply sources is connected to one or more power consumers.
FIG. 3 is a functional block diagram showing a configuration of the power control system 12 according to the embodiment of the present embodiment, and only functional blocks related to the present embodiment are extracted and shown. In the figure, the same parts as those of the power control system 10 according to the first embodiment shown in FIG. The power control system 12 includes a plurality of source power systems 22, one or more customer power systems 30 connected to each of the source power systems 22, and a control device 42. Each customer power system 30 is the same as in the first embodiment. Hereinafter, the M source power systems 22 are respectively referred to as source power systems 22-1 to 22-M, and are connected to the source power systems 22-m (m is an integer of 1 or more and M or less). N _{m-number (N m} is an integer of 1 or more) of the demand consumer electronics power system 30 respectively, to as demand consumer electronics power system 30-m-1~30-m- N m. Further, also referred to as demand consumer electronics power system 30-m collectively demand consumer electronics power system 30-m-1~30-m- N m.

  The source power system 22-m and the customer power system 30-m are connected by an AC network 51 and a DC network 52. The supply source power system 22-m and a part or all of the customer power systems 30-m may be connected by only the AC network 51 or only the DC network 52. The control device 42 communicates with the supply power system 22 and the customer power system 30 via a communication network 53.

  The difference between the power supply power system 22 and the power supply power system 20 of the first embodiment is that the AC power flow control device 211a and the DC power flow control device 216a are replaced with the AC power flow control device 211 and the DC power flow control device 216. It is a point to prepare. The AC power flow control device 211a is connected to the AC power flow control device 211a of one or more other power source power systems 22 by the AC network 54. The AC power flow control device 211a operates similarly to the AC power flow control device 211 of the first embodiment, and further receives AC power from the AC network 54 and transmits AC power to the AC network 54. . The DC power flow control device 216a is connected to the DC power flow control devices 216a of one or more other power source power systems 22 by the DC network 55. The DC power flow control device 216a operates in the same manner as the DC power flow control device 216 of the first embodiment, and further receives DC power from the DC network 55 and transmits DC power to the DC network 55. .

  With this configuration, when the power supplied to the customer power system 30-m is insufficient with only the own system in an emergency, the supply source power system 22-m can use one or more other supply source power systems 22-k. (K ≠ m, k is an integer of 1 or more and M or less) from one or both of the AC network 54 and the DC network 55, the power from the standby power supply (the power stored in the storage battery 203 or the emergency generator 202). Power generated by the above). In addition, the stored power is always exchanged between the power supply source systems 22.

  Note that some or all of the power source power systems 22 may be connected to other power source power systems 22 via only the AC network 54 or the DC network 55. In addition, some or all of the power supply source systems 22 may be configured not to receive power from another power supply source 22 by the standby power supply.

Controller 42 performs management and control of the supply source power system 22-1 to 22-M and demand consumer electronics power system _{30-1-1~30-M-N} M. The control device 42 includes an information collection unit 421, an information storage unit 422, and a control unit 423. Information collection unit 421 from the supply source power system 22-1 to 22-M and demand consumer electronics power system _{30-1-1~30-M-N} M, collects the state information indicating the state of each monitored item. Information collection unit 421, the state information collected from each of the supply source power system 22-1 to 22-M and demand consumer electronics power system _{30-1-1~30-M-N} M, as in the first embodiment It is. The information collecting unit 421 also collects information on weather, information on a transaction price at the time of selling electric power, and the like from an external device (not shown).

The information storage unit 422 stores log data that is a history of the status information collected by the information collection unit 421 and a history of information collected from an external device. Log data, and system identification information, collected from one of the supply source power system 22-1 to 22-M or demand consumer electronics power system _{30-1-1~30-M-N} M is specified by the system identification information This is information in which the associated state information is associated with time information indicating the time at which the state information was obtained.

The control unit 423 controls the power supply source systems 22-1 to 22-1 based on the status information notified by the information collection unit 421, the information collected from an external device, the time, and the information stored in the information storage unit 422. controls the 22-M and demand consumer electronics power system _{30-1-1~30-M-N} M. Control unit 423, the control performed on the set of the supply source power system 22-m and demand consumer electronics power system 30-m-1~30-m- N m comprises a control similar to the second embodiment. Further, the control unit 423 provides power to the supply source power system 22-m when the power supply from the supply power system 22-m to the customer power system 30-m is insufficient in an emergency. Of the power supply system 22-k, the amount of power to be exchanged, and whether to use the AC network 54 or the DC network 55, and instructs the power source system 22-k.

  Hereinafter, with respect to the cases shown in Table 3, an operation example of the supply source power system 22 based on the control of the control unit 423 will be described.

<Case A4-1: When the power supply source system 22-m supplies power to the customer power system 30-m in an emergency in the event of an emergency, the other power source power system 22-k exchanges power in the AC direction. >
The control unit 423 of the control device 42 controls the case A3-1 of the first embodiment to the supply power system 22-m, and from the supply power system 22-m to the customer power system 30-m. Power is insufficient. The control unit 423 performs the following control on the supply source power system 22-k when ac power is supplied from the supply source power system 22-k to the supply source power system 22-m.

(1) Instruct the AC power flow control device 211a to transmit power and voltage to the AC network 54.
(2) Instruct power generation of the power generator 201 or stop power generation. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(3) When the power generation and the power generation amount of the emergency power generator 202 can be controlled, at least one of the power generation amount and when the discharge and the discharge amount of the storage battery 203 can be controlled, the discharge amount is instructed.

  Further, the control unit 423 of the control device 42 instructs the power supply system 22-m to receive power from the AC grid 54 in the AC power flow control device 211a.

The power supply system 22-k operates as follows.
When the discharge of the storage battery 203 is instructed, the DC power supply 214 supplies the DC power discharged from the storage battery 203 to the power distribution device 215, converts the remaining power into AC, and transmits the power to the power distribution device 213. When power generation is instructed, the power generator 201 and the emergency power generator 202 transmit the generated power to the power distribution device 213. The power distribution device 213 supplies the power received from the generator 201, the emergency generator 202, and the DC power supply device 214 to the load 221 and transmits the remaining power to the power receiving device 212. The power receiving device 212 outputs the power received from the power distribution device 213 to the AC power flow control device 211a, and the AC power flow control device 211a transmits the power received from the power receiving device 212 to the AC network 54. The AC power flow control device 211a of the power source power system 22-m receives AC power from the power source power system 22-k via the AC network 54, and the AC power network 51 together with the power received from the power receiving device 212. Power.

<Case A4-2: In the event of an emergency, when the power supply source system 22-m supplies power to the customer power system 30-m with alternating current, the other power source power system 22-k exchanges power with direct current. >
When the control unit 423 of the control device 42 controls the case A3-1 of the first embodiment to the supply source power system 22-m, the control unit 423 switches from the supply source power system 22-k to the supply source power system 22-m. m so that the power can be exchanged by DC. In this case, the control unit 423 performs the following control on the supply source power system 22-k.

(1) An instruction to generate or stop generating power from the generator 201. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(2) Instruct at least one of the power generation amount of the emergency power generator 202 when the power generation amount is controllable and the discharge amount of the storage battery 203 when the discharge and discharge amount are controllable.
(3) Instruct the DC power flow control device 216a to transmit power and voltage to the DC grid 55.

  Further, control unit 423 of control device 42 instructs power supply source system 22-m to receive power from DC network 55 in DC power flow control device 216a.

The power supply system 22-k operates as follows.
When power generation is instructed from the control device 42, the power generator 201 and the emergency power generator 202 transmit the generated power to the power distribution device 213. DC power supply device 214 receives power discharged from storage battery 203 when control device 42 instructs discharge of storage battery 203.

  The AC power flow control device 211a transmits the commercial power received from the AC network 51 to the power receiving device 212. The power receiving device 212 transmits the commercial power received from the AC power flow control device 211a to the power distribution device 213. The power distribution device 213 receives the commercial power from the power receiving device 212 and the generated power of the power generator 201 and the emergency power generator 202, and outputs the power to the DC power supply device 214 and the load 221. DC power supply device 214 outputs to power distribution device 215 the power discharged from storage battery 203 and the power received from power distribution device 213 and converted to DC. The power distribution device 215 transmits the DC power received from the DC power supply device 214 to the load 222, and transmits the remaining power to the DC power flow control device 216a. The DC power flow control device 216a transmits the DC power received from the power distribution device 215 to the DC network 55.

  The DC power flow control device 216 a of the power supply source system 22-m receives DC power from the power supply source system 22-k via the DC network 55 and transmits the power to the power distribution device 215. The power distribution device 215 transmits the power received from the DC power flow control device 216a to the load 222 and the DC power supply device 214. The DC power supply 214 converts the power received from the storage battery 203 and the power distribution device 215 into AC, and transmits the power to the power distribution device 213. The subsequent operation of the power supply source system 22-m is the same as in the case A3-1.

<Case A4-3: When the power supply source system 22-m supplies electric power to the customer power supply system 30-m in an emergency in an emergency, the other power supply source system 22-k supplies electric power in AC and DC. Flexibility>
When the control unit 423 of the control device 42 controls the case A3-1 of the first embodiment to the supply source power system 22-m, the control unit 423 switches from the supply source power system 22-k to the supply source power system 22-m. The control is performed so that the power can be exchanged between AC and DC. In this case, the control unit 423 performs the following control on the supply source power system 22-k.

(1) Instruct the AC power flow control device 211a to transmit power and voltage to the AC network 54.
(2) Instruct power generation of the power generator 201 or stop power generation. When the amount of power generated by the generator 201 can be controlled, the amount of power generation is also instructed along with the instruction for power generation.
(3) When the power generation and the power generation amount of the emergency power generator 202 can be controlled, at least one of the power generation amount and when the discharge and the discharge amount of the storage battery 203 can be controlled, the discharge amount is designated.
(4) Instruct the DC power flow control device 216a to transmit power and voltage to the DC network 55.

  Further, the control unit 423 of the control device 42 receives power from the AC power supply network 54 in the AC power flow control device 211a and receives power from the DC power supply network 55 in the DC power flow control device 216a with respect to the power supply source system 22-m. Instruct.

The power supply system 22-k operates as follows.
When power generation is instructed from the control device 42, the power generator 201 and the emergency power generator 202 transmit the generated power to the power distribution device 213. The power distribution device 213 supplies the power received from the power generator 201 and the emergency power generator 202 to the load 221, and transmits the remaining power to the power receiving device 212 and the DC power supply device 214. The power receiving device 212 outputs the power received from the power distribution device 213 to the AC power flow control device 211a, and the AC power flow control device 211a transmits the power received from the power receiving device 212 to the AC network 54.

  DC power supply device 214 converts the power received from power distribution device 213 from AC to DC, and further receives DC power discharged from storage battery 203 when control device 42 instructs discharge of storage battery 203. The DC power supply 214 transmits DC power to the power distribution device 215. The power distribution device 215 transmits the DC power received from the DC power supply device 214 to the load 222, and transmits the remaining power to the DC power flow control device 216a. The DC power flow control device 216a transmits the DC power received from the power distribution device 215 to the DC network 55.

  When the amount of power discharged from the storage battery 203 is larger than the sum of the amount of power consumed by the load 222 and the amount of power supplied to the customer power system 30 by DC, the DC power supply 214 The remaining transmitted power is converted into AC and transmitted to the power distribution device 213. The power distribution device 213 supplies the power received from the generator 201, the emergency generator 202, and the DC power supply device 214 to the load 221 and transmits the remaining power to the power receiving device 212.

  The DC power flow control device 216 a of the power supply source system 22-m receives DC power from the power supply source system 22-k via the DC network 55 and transmits the power to the power distribution device 215. The power distribution device 215 transmits the power received from the DC power flow control device 216a to the load 222 and the DC power supply device 214 to which power is to be supplied. The DC power supply 214 converts the power received from the storage battery 203 and the power distribution device 215 into AC, and transmits the power to the power distribution device 213. The power distribution device 213 supplies the power received from the power generator 201, the emergency power generator 202, and the DC power supply device 214 to the load 221 to be supplied with power, and transmits the remaining power to the power receiving device 212. Power receiving device 212 outputs the power received from power distribution device 213 to AC power flow control device 211a. The AC power flow control device 211a transmits the power received from the power receiving device 212 and the AC power received from the supply source power system 22-k via the AC network 54 to the AC network 51.

<Case A4-4: In the event of an emergency, when the power supply source system 22-m supplies power to the customer power system 30-m with direct current, the other power source power system 22-k exchanges power with alternating current. >
The control unit 423 of the control device 42 controls the case A3-2 of the first embodiment to the supply source power system 22-m, and from the supply source power system 22-m to the customer power system 30-m. Power is insufficient. The control unit 423 performs the same control as that of the case A4-1 on the supply source power system 22-k when the supply of power from the supply source power system 22-k to the supply source power system 22-m is performed by alternating current. , And instructs the power supply source system 22-m to receive power from the AC network 54 in the AC power flow control device 211a. Accordingly, the power supply source system 22-m operates in the same manner as in the case A3-2 except for the following operation. That is, the AC power flow control device 211a outputs the AC power received from the AC network 51 and the AC power received from the AC network 54 together to the power receiving device 212.

<Case A4-5: When the power supply source system 22-m supplies DC power to the customer power system 30-m in an emergency, the other power supply source systems 22-k exchange power with DC power. >
The control unit 423 of the control device 42 controls the power supply source system 22-m, which controls the case A3-2 of the first embodiment, such that the power supply from the power supply source system 22-k uses DC power. . In this case, the control unit 423 issues the same instruction to the supply source power system 22-k as in the case A4-2, and instructs the supply source power system 22-m to the DC power grid in the DC power flow control device 216a. An instruction to receive power from 55 is given. The source electric power system 22-m operates similarly to the case A3-2 except for the following operation. That is, the DC power flow control device 216a of the source power system 22-m combines the DC power received from the power distribution device 215 with the DC power received from the source power system 22-k via the DC network 55. The power is transmitted to the DC network 52.

<Case A4-6: When the power supply source system 22-m supplies the DC power to the customer power system 30-m in an emergency, the other power supply source systems 22-k use the DC and AC power. Flexibility>
The control unit 423 of the control device 42 allows the power supply source system 22-k, which controls the case A3-2 of the first embodiment, to exchange power from the power supply source system 22-k with AC and DC. Control. In this case, the control unit 423 issues the same instruction to the supply source electric power system 22-k as in the case A4-3, and instructs the supply electric power system 22-m to the AC power grid in the AC power flow control device 211a. Instructs to receive power from the DC power supply 54 and to receive power from the DC network 55 in the DC power flow control device 216a. The source electric power system 22-m operates similarly to the case A3-2 except for the following operation. That is, the AC power flow control device 211a of the power supply source system 22-m outputs the combined AC power received from the AC network 51 and the AC power received from the AC network 54 to the power receiving device 212. Further, the DC power flow control device 216 a transmits the DC power received from the power distribution device 215 and the DC power received from the power supply source system 22-k via the DC network 55 together to the DC network 52.

<Case A4-7: When the power supply source system 22-m supplies AC and DC power to the customer power system 30-m in an emergency, the other power supply source system 22-k uses AC power. Flexibility>
The control unit 423 of the control device 42 controls the power supply system 22-m, which controls the case A3-3 of the first embodiment, to exchange power from the power supply system 22-k with AC power. . In this case, the control unit 423 issues the same instruction to the supply source electric power system 22-k as in the case A4-1, and instructs the supply electric power system 22-m to the AC power grid in the AC power flow control device 211a. An instruction to receive power from the terminal 54 is issued. The source electric power system 22-m operates similarly to the case A3-3 except for the following operation. That is, the AC power flow control device 211a transmits the combined power received from the AC network 54 and the power received from the power receiving device 212 to the AC network 51.

<Case A4-8: When the source power system 22-m supplies AC and DC power to the customer power system 30-m in an emergency, the other source power system 22-k uses DC power. Flexibility>
The control unit 423 of the control device 42 controls the power supply source system 22-m, which controls the case A3-3 of the first embodiment, such that power is supplied from the power supply source system 22-k with direct current. . In this case, the control unit 423 issues the same instruction to the supply source power system 22-k as in the case A4-2, and instructs the supply source power system 22-m to the DC power grid in the DC power flow control device 216a. An instruction to receive power from 55 is given. The source electric power system 22-m operates similarly to the case A3-3 except for the following operation. That is, the DC power flow control device 216 a transmits the combined DC power received from the power distribution device 215 and the DC power received from the power supply source system 22-k via the DC network 55 to the DC network 52.

<Case A4-9: When the source power system 22-m supplies AC and DC power to the customer power system 30-m in an emergency, the other source power system 22-k uses AC and DC. Interchange of power with
The control unit 423 of the control device 42 controls the supply power system 22-m that controls the case A3-3 of the first embodiment to exchange power from the supply power system 22-k with AC and DC. Control. In this case, the control unit 423 issues the same instruction to the supply source electric power system 22-k as in the case A4-3, and instructs the supply electric power system 22-m to the AC power grid in the AC power flow control device 211a. Instructs to receive power from the DC power supply 54 and to receive power from the DC network 55 in the DC power flow control device 216a. The source electric power system 22-m operates similarly to the case A3-3 except for the following operation. That is, the AC power flow control device 211a transmits the AC power received from the AC network 54 and the power received from the power receiving device 212 to the AC network 51 together. Further, the DC power flow control device 216a transmits the DC power received from the power distribution device 215 and the DC power received from the power supply source system 22-k via the DC network 55 together to the DC network 52.

  In the above cases A4-1 to A4-9, the control unit 423 of the control device 42 controls the power stored between the supply source power systems 22 to be exchanged in an emergency. In the following cases A5-1 to A5-4, the control unit 423 of the control device 42 controls so that the power stored between the supply source power systems 22 is always exchanged.

<Case A5-1: The power stored in another power supply system 22-k in the power supply system 22-m at all times is exchanged with AC power>
The control unit 423 of the control device 42 instructs the power supply electric power system 22-k to stop the power generation of the emergency power generator 202 and to discharge the storage battery 203 and the discharge amount when the discharge amount can be controlled. Otherwise, the same control as in the case A4-1 is performed. Further, the control unit 423 instructs the power supply source system 22-m to receive power from the AC network 54 in the AC power flow control device 211a, and then performs the same control as in the cases A1-1 and A1-2. Do. As a result, the AC power flow control device 211a of the power supply source system 22-m receives AC power from the power supply source system 22-k via the AC network 54 and transmits the AC power to the power reception device 212. Further, the AC power flow control device 211a transmits the commercial power received from the AC network 51 to the power receiving device 212. Subsequent operations of the power supply source system 22-m are the same as those in the cases A1-1 and A1-2.

<Case A5-2: The power stored in the power source power system 22-m and the power stored in the other power source power system 22-k at all times is exchanged by DC>
The control unit 423 of the control device 42 instructs the power supply power system 22-k to stop the power generation of the emergency power generator 202 and to discharge the storage battery 203 and the discharge amount when the discharge amount can be controlled. Otherwise, the same control as in case A4-2 is performed. Further, control unit 423 performs the same control as in cases A1-1 and A1-2 except instructing power supply source system 22-m to receive power from DC network 55 in DC power flow control device 216a. Do. As a result, the DC power flow control device 216 a of the power supply source system 22-m receives the DC power from the power supply source system 22-k via the DC network 55 and transmits it to the power distribution device 215. The power distribution device 215 supplies the power received from the DC power flow control device 216a to the load 222. In the case A1-2, the power distribution device 215 supplies the remaining power to the storage battery 203 via the DC power supply 214 to store the power.

<Case A5-3: The power stored in the power source power system 22-m and the power stored in the other power source power system 22-k at all times is exchanged between AC and DC>
The control unit 423 of the control device 42 instructs the power supply power system 22-k to stop the power generation of the emergency power generator 202 and to discharge the storage battery 203 and the discharge amount when the discharge amount can be controlled. Otherwise, the same control as in case A4-3 is performed. Further, control unit 423 instructs supply source power system 22-m to receive power from AC network 54 in AC power flow control device 211a and to receive power from DC network 55 in DC power flow control device 216a. Other than the above, the same control as in the cases A1-1 and A1-2 is performed.

  Accordingly, the power source power system 22-m operates in the same manner as in the cases A1-1 and A1-2 except for the following operations. That is, the AC power flow control device 211a transmits to the power receiving device 212 the AC power received from the power supply power system 22-k via the AC network 54 and the commercial power received from the AC network 51. Further, the DC power flow control device 216 a receives DC power from the power supply power system 22-k via the DC network 55 and transmits the DC power to the power distribution device 215. The power distribution device 215 supplies the power received from the DC power flow control device 216a to the load 222. In the case A1-2, the power distribution device 215 supplies the remaining power to the storage battery 203 via the DC power supply 214 to store the power.

<Case A5-4: While the supply source power system 22-m always supplies power to the customer power system 32-m, the power stored in another supply source power system 22-k is supplied to the supply source power system. Interchange of electric power to 22-m>
While the power supply system 22-m always supplies power to the customer power system 32-m, the power stored in the other power supply system 22-k is supplied to the power supply system 22-m. The operation at the time of accommodation is the same as cases A4-1 to A4-9, except for the following points. That is, the control unit 423 of the control device 42 instructs the power supply source system 22-m to stop power generation of the emergency power generator 202 and to discharge the storage battery 203 and the discharge amount when the discharge amount can be controlled. In addition, the control unit 423 instructs the power supply source system 22-k to stop the power generation of the emergency power generator 202 and to discharge the storage battery 203 and the discharge amount when the discharge amount can be controlled, and to suppress the load. Do not give instructions.

  According to the third embodiment, when the power supply source is short of the power that can be supplied to the interconnected power customer, the power demand is received by receiving the power from the other power supply source. Electricity can be supplied to the house. In addition, the power stored in the storage battery can be exchanged between power supply sources.

  In addition, some or all of the power supply source and the power consumers include the power source power system 20 or the power source power system 22 that also operates as the customer power system 30, and the other power source power system 20 or the power source power Power may be supplied from the system 22. In this case, in the power source power system 20 or the power source power system 22 that also operates as the consumer power system 30, the power receiving device 212 has the same function as the power distribution device 312, and the DC power supply device 214 is connected to the DC power supply device 313. The power distribution device 215 has the same function as the power distribution device 314.

  According to the first to third embodiments described above, the power control system includes the supply source power system, the customer power system, and the control device. In the power control system, the supply source power system and the customer power system may be one-to-one or one-to-many. Further, the power control system may include a plurality of pairs of one-to-one or one-to-many supply source power systems and customer power systems. The supply source power system includes a standby power supply, an AC power flow control unit that switches between receiving AC power from the AC power grid and transmitting power supplied from the standby power to the AC power grid. For example, the standby power supply is one or both of the emergency power generator 202 and the storage battery 203 of the embodiment, and the AC power flow control units are the AC power flow control devices 211 and 211a of the embodiment. The customer power system includes a power receiving unit that receives AC power, which is power transmitted by a commercial power or a power supply system from an AC grid, and a power distribution unit that supplies power received by the power receiving unit to a load. For example, the power receiving unit is the power receiving device 311 of the embodiment, and the power distribution unit is the power distribution devices 312 and 314 of the embodiment. The control device includes a control unit that controls switching between power reception of the AC power from the AC grid and transmission to the AC grid in the AC power flow control unit of the power supply source system.

  Further, the supply source power system further includes a DC power flow control unit that switches whether or not to transmit power supplied from the standby power supply to the DC network, and the customer power system converts the power supplied from the standby power supply to DC power. A switching unit that switches whether to receive power from the grid may be further provided. For example, the DC power flow control unit is the DC power flow control device 216 or 216a of the embodiment, and the switching unit is the switching device 315 of the embodiment. In this case, the control unit of the control device controls the DC power flow control unit of the supply power system to switch whether or not to transmit power to the DC network, and the control unit of the customer power system switches the DC power network from the DC network. Control to switch whether or not to receive power. A power distribution unit of the customer power system supplies power received from an AC network or a DC network to a load.

  In the case where the power control system has a plurality of pairs of one-to-one or one-to-many source power systems and customer power systems, the source power system is supplied from a standby power source of another source power system. The power may be transmitted to the AC power network by the AC power flow control unit and supplied to the customer power system, or may be transmitted from the DC power flow control unit to the DC power network and supplied to the customer power system.

  According to the above-described first to third embodiments, the electric power consumer can outsource the emergency power supply equipment and its operation. Therefore, the electric power consumer can use the installation space of the emergency power supply equipment, which has been conventionally required, for other uses, and can reduce the burden of maintenance and operation of the emergency power supply equipment.

[Fourth embodiment]
The power control system according to the present embodiment uses a standby power supply including a storage battery as an emergency power supply for supplying power in an emergency. The power control system according to the present embodiment includes a load state of a storage battery, an emergency generator, and a power supply source in a power supply power system, a required amount of power to be supplied to a load of a customer power system, and power supply to a power customer. The power supply / charge / discharge method that satisfies the optimal requirements is calculated based on the priority of the power supply and the like, and the power supply / rechargeable battery charge / discharge by the supply source power system is controlled.

  FIG. 4 is a diagram illustrating an outline of the operation of the power control system according to the present embodiment. Although FIG. 1 shows one building of the power supply source and one building of the power consumer, the number of the building of the power supply source and the building of the power consumer can be arbitrary.

  The power supply building is provided with a power supply system having a backup power supply such as a storage battery or an emergency generator. The source power system may include a generator that constantly generates power in an emergency. The source power system supplies power to the load of the power source. A building of a power consumer is provided with a consumer power system and supplies power to a load of the power consumer. The consumer power system may include a generator such as a solar power generator or a wind power generator. The load is, for example, an air-conditioning facility, a lighting facility, an elevator facility, a computer server, a communication facility, and the like, but is not limited to these examples.

  The power control system is based on the amount of power generated by the generator and emergency generator at the power supply source, the amount of power consumed by the load, the amount of power stored and discharged by the storage battery, the amount of power supplied to the power consumer, and the load on the power consumer. State information such as power consumption is collected in real time, and the time-series state information collected in the past is described as actual information. In the performance information, the past time-series load power consumption is also referred to as a past load trend. Further, the power control system periodically receives information on weather conditions (temperature, humidity) from the outside, and stores the received information in association with the reception time as externally collected information.

  The power control system performs power generation prediction at the prediction target time based on at least a part of information on the power generation amounts of the past, present, and predicted power generators and information on weather conditions. The prediction target time is, for example, a time from a current time until a predetermined time elapses, or a part of time included in the time. The power generation amount of the generator used for the power generation prediction may be a result of similar power generation prediction performed in the past or a power generation prediction acquired from outside. In addition, the power control system includes a power supply source that records actual information, current and predicted status information, a stoppable load time table, past, current, and predicted weather information, a time zone of a prediction target time, a day of the week, and a season. Using at least a part of the information such as the amount of power, the amount of power that can be supplied from the standby power supply in the emergency at the time of the forecast and the load capacity of the power supply source in the emergency at the time of the forecast And predict. The time zone may be, for example, a time zone obtained by arbitrarily dividing one day, such as early morning, daytime, and nighttime. In addition, the power control system includes: actual information and current and predicted state information at the power consumer; a stoppable load time table; past, current and predicted weather information; The load capacity of the power consumer in the emergency at the prediction target time is predicted using at least a part of the information such as the above information.

  The power control system, based on these prediction results, the setting information, the power generation capacity of the emergency generator and the capacity of the storage battery, determines the amount of power that can be supplied from the standby power supply of the power supply in an emergency, The amount of power to be supplied to the load and the amount of power to be supplied to each power consumer are calculated. The setting information includes the priority of each load and the rated power consumption of each power supply source and each power consumer, the supply priority of each power supply source and each power consumer, and the emergency status of each power supply source and each power consumer. Of power supply required, a stoppable load time table and the like. The stoppable load time table may indicate the load that can be stopped in an emergency for each of the power supply source and the power consumer for each time zone, and may be used as information indicating the priority of each load.

  FIG. 5 is a functional block diagram showing a configuration of a power control system 15 according to the fourth embodiment, in which only functional blocks related to the present embodiment are extracted and shown. The power control system 15 includes a power supply source power supply system 25, a power supply customer power supply system 35, and a control device 45 that controls the supply power supply system 25 and the power supply system 35. The power supply source system 25 is provided in a facility such as a power supply source building serving as a power supply base, and the customer power supply system 35 is provided in a facility such as a power customer building serving as a power demand base.

  The power control system 15 has P (P is an integer of 1 or more) source power systems 25 and Q (Q is an integer of 1 or more) customer power systems 35. When P = 1 and Q = 1, the supply source power system 25, the customer power system 35, and the control device 45 are respectively connected to the supply source power system 20, the customer power system 30, and the control device 40 of the first embodiment. Equivalent to. When P = 1 and Q ≧ 2, the supply source power system 25, the customer power system 35, and the control device 45 are respectively connected to the supply source power system 20, the customer power system 30, and the control device 41 of the second embodiment. Equivalent to. When P ≧ 2 and Q ≧ 2, the supply source power system 25, the customer power system 35, and the control device 45 are respectively connected to the supply source power system 22, the customer power system 30, and the control device 42 of the third embodiment. Equivalent to.

  The power supply power system 25 includes a power supply control device 251, a power receiving and transforming device 252, a conversion device 253, an emergency power generation device 254, a power generation device 255, a power storage device 256, and a load device 257. The power supply control device 251 controls each device in the power supply source system 25 according to an instruction from the control device 45. The power receiving and transforming device 252 receives, transmits, and transforms AC power. The power receiving and transforming equipment 252 corresponds to the AC power flow control device 211 or 211a and the power receiving device 212 in the first to third embodiments. The converter 253 is a rectifier, a UPS (uninterruptible power supply), or the like, and performs power distribution. When performing power distribution, the conversion device 253 performs conversion between DC power and AC power as necessary. The conversion device 253 corresponds to the power distribution device 213, the DC power supply device 214, the power distribution device 215, and the DC power flow control device 216 or 216a in the first to third embodiments.

  The emergency power generator 254 is a power generator that generates power in an emergency in an emergency, and corresponds to the emergency power generator 202 in the first to third embodiments. The power generator 255 is a power generator, such as a solar power generator or a wind power generator, that generates power at all times and in an emergency, and corresponds to the power generator 201 in the first to third embodiments. The power storage device 256 is, for example, a secondary battery such as a lithium ion battery, and discharges in an emergency. The power storage device 256 corresponds to the storage battery 203 in the first to third embodiments. The load device 257 is a device operated by electric power, and corresponds to the load 221 and the load 222 in the first to third embodiments.

  The customer power system 35 includes a power receiving and transforming device 351, a converter 352, and a load device 353. The power receiving and transforming device 351 receives and transforms AC power. The power receiving and transforming device 351 corresponds to the power receiving device 311 in the first to third embodiments. The conversion device 352 is a rectifier, a UPS, or the like, and performs power distribution. When performing power distribution, the conversion device 352 performs conversion between DC power and AC power as necessary. The conversion device 352 corresponds to the power distribution device 312, the DC power supply 313, and the power distribution device 314 in the first to third embodiments. The load device 353 is a device operated by electric power, and corresponds to the load 321 and the load 322 in the first to third embodiments.

  The power receiving and transforming device 252 of the supply power system 25 and the power receiving and transforming device 351 of the customer power system 35 are connected by an AC network 511 and a private line network 512. The AC network 511 is a power network for commercial power. The private network 512 is an AC power network laid between a power supply source and a power consumer. Note that the AC network 511 alone may be used as a power network of AC power without providing the private line network 512. The conversion device 253 of the supply source power system 25 and the conversion device 352 of the customer power system 35 are connected by a private line 521. The private line 521 is a DC power network laid between the power supply source and the power customer, and corresponds to the DC network 52 of the first to third embodiments.

  In the case of P ≧ 2 and Q ≧ 2, the P supply source power systems 25 and the Q customer power systems 35 may be connected in a mesh by the AC network 511 and the private line network 512. In this case, the controller 45 determines that each of the customer power systems 35 receives power supply from only one of the power supply source systems 25. The home power system 35 can be configured to receive power supply from only one power source power system 25. Further, the customer power system 35 may be connected to the power supply source system 25 through only the private line network 512 or the private line 521. Further, in the case where the private line network 512 is not provided, or even in the case where the private line network 512 is provided, power can be supplied from the supply source power system 25 to the customer power system 35 using the AC network 511. Good. In this case, the AC network 511 corresponds to the AC network 51 in the first to third embodiments.

  The control device 45 includes an information collection unit 451, an information storage unit 452, and a control unit 453. The information storage unit 452 corresponds to the information storage units 402, 412, and 422 of the first to third embodiments, and the information collection unit 451 is the information collection units 401, 411, and 421 of the first to third embodiments. Is equivalent to The control unit 453 corresponds to the control units 403, 413, and 423 of the first to third embodiments.

  The information collection unit 451 collects state information from each of the power supply power system 25 and the customer power system 35, and acquires information such as weather (temperature, humidity) from an external device. The information storage unit 452 stores various information. The information storage unit 452 associates the status information collected by the information collection unit 451 with the collection time of the information, and the weather information collected by the information collection unit 451 from an external device with the collection time of the information. The externally collected information is stored. The information storage unit 452 further stores setting information. The setting information includes the priority and the rated power consumption of each of the load device 257 of the power supply source and the load device 353 of the power customer, the stoppable load time table, the priority of each power customer, and the emergency of each power customer. And the power required for supply.

  The control unit 453 includes a demand amount calculation unit 454, a supply amount calculation unit 455, and an instruction unit 456. The demand amount calculation unit 454 includes setting information stored in the information storage unit 452, and information such as past, present, and predicted state information and weather acquired by the information collection unit 451 or stored in the information storage unit 452. Using at least a part of the information such as the time zone of the prediction target time, the day of the week, the season, and the like, the emergency power demand of each power consumer at the prediction target time is calculated by an arbitrary prediction technique. Note that the prediction state information may be information predicted by the control unit 453 using an arbitrary technique, or information received from an external device.

  The supply amount calculation unit 455 includes setting information stored in the information storage unit 452, and information such as past, present, and predicted state information and weather acquired by the information collection unit 451 or stored in the information storage unit 452. Using at least a part of the information such as the time zone of the forecast target time, the day of the week, and the season, the power that each power supply source can supply to the power consumer in the emergency at the forecast target time by an arbitrary forecasting technique. Is calculated.

  The instructing unit 456 provides the power supply control device 251 of the supply source power system 25 with power generation by the emergency power generation device 254 and power generation from the power storage device 256 based on the calculation results of the demand amount calculation unit 454 and the supply amount calculation unit 455. Instructs the discharging and partial stop of the load device 257 to receive the AC power supplied from the power supply source system 25 to the power receiving and transforming device 351 of the customer power system 35, and supply the power source power to the conversion device 352. It instructs to receive the DC power supplied from the system 25 and partially stop the load device 353. Note that the instruction unit 456 may perform only a part of these instructions.

An example of power supply to a power consumer in an emergency in the power control system 15 will be described with reference to FIGS.
FIG. 6 is a diagram showing contract conditions of each of the power consumers A, B, and C. Note that the information on the contract conditions is included in the setting information. The electric power consumer A has contracted 100% of the electric power consumption of the load in the building of the electric power consumer A during normal times, and an upper limit of 500 kW, as a guarantee-type supply request electric power. Guarantee type indicates that power supply is guaranteed.

  The power consumer B uses 30% of the normal load power consumption in the building of the power consumer B and the upper limit of 150 kW as the guarantee-type supply request power, and also 30% of the normal load power consumption and the upper limit of 150 kW. Has been contracted as a best-effort type of power demand. The best effort type indicates the upper limit of the amount of power supplied when there is surplus power that can be supplied to the standby power supply.

  The electric power consumer C has contracted 30% of the electric power consumption of the load of the electric power consumer C during normal times and an upper limit of 150 kW as the best-effort-type supply request electric power.

  The priorities of power supply of the power consumers A, B, and C are high, medium, and low, respectively. In addition, the priority of the power supply is higher in the order of the guarantee type of the power customer A, the guarantee type of the power customer B, the best effort type of the power customer B, and the best effort type of the power customer C.

  FIG. 7 is a diagram illustrating an example of power supply to the power consumer in an emergency at the peak power demand time of the power control system 15. The demand amount calculation unit 454 of the control device 45 determines the past load trend under the same or similar conditions as the time zone of the prediction target time, the season, the day of the week, the external factors such as the past, current and predicted weather, and weather conditions. Based on at least a part of the information, when a power outage occurs and continues at each time within the prediction target time, the power demand amount of how much power is required to be supplied to the power consumers A to C in real time. calculate. Here, the demand calculation unit 454 determines that the power demand of the power customer A is the guarantee type 500 kW, the power demand of the power customer B is the guarantee type 150 kW, the best effort type 150 kW, and the power demand of the power customer C. The amount is calculated to be a guarantee type 150 kW.

  Further, the supply amount calculation unit 455 of the control device 45 calculates the suppliable power for each of the power supply candidate power supply power supply systems 25 that are the power supply candidates of the power supply candidates that supply power to the power consumers A to C in an emergency. Calculate the amount. The supply amount calculation unit 455 determines the power demand of each of the power consumers A to C, the amount of power that can be supplied by the power supply source candidate, the loss due to the power transmission distance from the power supply source system 25 to the customer power system 35, and the like. The power supply source that supplies power to each of the power consumers A to C is determined from the minimum combination and the like.

  Note that the supply amount calculation unit 455 may determine the priority of supply to each power consumer based on economic rationality. For example, when the amount of power that can be supplied from the power supply sources A to C is insufficient for the amount of power required by all of the power consumers A to C, the supply amount calculation unit 455 determines the power supply to the power customers. An electric power supply source that supplies electric power to each electric power consumer is determined according to a combination that provides the highest amount of income from supply. Alternatively, the supply amount calculation unit 455 determines that the amount of power that can be supplied from the power supply sources A to C is insufficient for the total amount of power required for power supply by the guarantee type of the power consumers A to C. Determines a power supply source that supplies power to each power consumer by a combination that minimizes a penalty amount when the guarantee-type power amount cannot be covered. The penalty amount is determined in advance, for example, by a service level agreement (SLA) with the electric power consumer.

  For example, the supply amount calculation unit 455 determines that the suppliable power amount from the power supply source A is 600 kW, the suppliable power amount from the power supply source B is 200 kW, and the suppliable power amount from the power supply source C is 100 kW. calculate. When there is no power interchange between the power supply sources, the supply amount calculation unit 455 gives priority to the guarantee type, and supplies 500 kW from the power supply source A to the power customer A and 150 kW from the power supply source B to the power customer B. Judge to supply. Since the amount of power that can be supplied from the power supply source C is less than the amount of power that the power consumers B and C need to supply in a best-effort manner, power is not supplied. When there is power interchange between the power supply sources, the supply amount calculation unit 455 determines that the power supply sources B and C determine the power if the power supply from the power supply source system 25 of another power supply source is possible. In response to this, the power consumers B and C supply power of the best effort type power demand.

  FIG. 8 is a diagram illustrating an example of power supply to the power consumer in an emergency during the power demand off-peak time of the power control system 15. In the same manner as described above, the demand amount calculation unit 454 of the control device 45 calculates the power demand amount of the power consumers A to C in real time when a power failure occurs and continues at each time. Is calculated. The demand calculation unit 454 determines that the power demand of the power customer A is the guarantee type 250 kW, the power demand of the power customer B is the guarantee type 75 kW, the best effort type 75 kW, and the power demand of the power customer C is the guarantee type. It is calculated that the tee type is 75 kW.

  Further, similarly to the above, the supply amount calculation unit 455 of the control device 45 calculates the amount of power that can be supplied for each of the power supply source power supply systems 25 of the power supply candidate candidates that supply power to the power consumers A to C in an emergency. calculate. For example, the supply amount calculation unit 455 determines that the suppliable power amount from the power supply source A is 600 kW, the suppliable power amount from the power supply source B is 200 kW, and the suppliable power amount from the power supply source C is 100 kW. calculate. The supply amount calculation unit 455 gives priority to the guarantee type and determines that 250 kW is supplied from the power supply source A to the power customer A and 75 kW is supplied from the power supply source B to the power customer B. Subsequently, since the power supply source B has surplus power, the supply amount calculation unit 455 supplies the best-effort 75 kW from the power supply source B to the power consumer B, and supplies the power consumer C from the power supply source C. It is determined that 75 kW will be supplied.

  As described above, the control device 45 determines the power demand of the power consumer, and if there is surplus power even when the guarantee-type power demand is supplied, the surplus power is contracted on a best-effort basis. It can supply to low-priority power consumers such as existing power consumers. For example, in addition to off-peak periods, power consumption may be lower during the night than during the day. Therefore, if the actual power consumption is expected to be lower than the required supply power contracted for the guarantee type, the surplus can be supplied to the low-priority power consumers. Therefore, even when the actual power consumption is expected to be low as in the conventional case, it is possible to supply power to a large number of power consumers, compared to a case where the required supply amount of the guarantee type is always secured. There is.

  In addition, the guaranteed power supply amount and the best effort type power supply amount can be set as a ratio to the normal power consumption. With such a setting, when the power consumption is expected to be low, such as during an off-peak period or at night, it is possible to more efficiently supply power to many power consumers.

  FIG. 9 is a flowchart showing an emergency power supply process in the power control system 15. In the emergency power supply process, the control device 45 manages, in real time, the expected power demand at the time of the occurrence of a power outage for each power consumer, and determines from the power source power system 25 of the power source building which power source It is determined whether to supply power to the customer power system 35 of the customer building. The control device 45 performs the prioritization of the electric power consumers as the electric power supply destinations, and instructs the electric power supply system 25 to supply electric power. The power supply control device 251 of the supply source power system 25 performs control for supplying power to the customer power system 35 from the emergency power generation device 254 and the power storage device 256 included in the own system according to an instruction from the control device 45. The power supply process in an emergency will be described in detail below.

  The demand amount calculation unit 454 of the control device 45 calculates, in real time, for example, a power demand amount which is an estimate of how much power supply is required for each power consumer when a power failure occurs and continues at each time. It is calculated at time intervals such as minutes to tens of minutes (step S105). The demand amount calculation unit 454 predicts the power demand amount by, for example, the trend of the load fluctuation of the load device 353 under the same or similar conditions, such as the season, time zone, and day of the forecast target time, external conditions such as weather and weather conditions. This is done based on factors.

  The power receiving and transforming device 351 of each customer power system 35 monitors the occurrence of a power outage in the power system. When detecting the occurrence of a power failure of the commercial power supplied by the AC network 511, the power receiving and transforming device 351 transmits a power failure signal to the control device 45 (step S110). The information collection unit 451 of the control device 45 receives the power failure signal, and determines the customer power system 35 in which the power failure has occurred from the information of the transmission source set in the received power failure signal (Step S115).

  The demand amount calculation unit 454 calculates the priority of power supply to each power consumer in which a power failure has occurred based on the priority of each power consumer read from the setting information stored in the information storage unit 452 ( Step S120). The setting information is set in advance based on a contract with an electric power consumer or the like.

  The supply amount calculation unit 455 selects a power supply source candidate for the power consumer in which the power failure has occurred. The power supply source candidates may be all of the power supply source systems 25, or may be the customer power system 35 within a predetermined distance from the customer power system 35, and the supply that can be the power supply source candidate of each of the customer power systems 35 The information of the original power system 25 may be included in the setting information and set. The supply amount calculation unit 455 calculates the suppliable power amount for each of the selected power supply source candidate power supply power systems 25 (step S125).

  The instructing unit 456 minimizes the loss due to the predicted power demand and priority of each power consumer in which the power failure has occurred, the amount of power that can be supplied from the power supply system 25 as a power supply candidate, the power transmission distance, and the like. It is determined how much power is to be supplied from which power supply system 25 to which customer power system 35 in which a power failure has occurred, based on the combination or the like. Specifically, the parameters for determining the priority and the combination of the power supply source and the power supply destination power customer are one or more of the following.

(1) The supply priority of the power supply source and the power supply destination.
(2) The amount of power that can be supplied in the power supply power system 25 of each power supply source calculated in real time.
(3) The power supply demand of each power consumer in an emergency. This is a predicted value of the load capacity required when a power outage occurs in each power consumer, and is the sum of the amount of power required to be supplied as a guarantee type and the amount of best effort power.
(4) The time required for supply at each power consumer (supply continuation time such as 2 hours after a power outage).
(5) Power supply loss due to the power transmission distance between the power source power system 25 and the customer power system 35 and the like.
(6) Supply route (whether power is supplied through the AC network 511, power is supplied through the private line network 512, or power is supplied through the private line 521).
(7) The result of determining the power supply route according to the damage situation.

  The instructing unit 456 instructs the supply source power system 25 to start supplying power to the customer power system 35 of the power supply destination in which the power failure has occurred, in accordance with the priority order, based on the determination result. The power system 35 is instructed to start receiving power supplied from the power source power supply system 25 (step S130). The instruction to the supply source power system 25 may include an instruction such as a power generation amount of the emergency power generation device 254 and a discharge amount from the power storage device 256.

  Further, when the dischargeable power amount of the power storage device 256 of the power supply power system 25 is less than the sum of the power demand amount in the power supply source system 25 and the power demand amount in the power supply destination customer power system 35. , The instruction unit 456 determines that the power supply to the load device 257 and a part of the load device 353 is to be stopped. The instructing unit 457 sets the load device 257 and the load device 353 for stopping the power supply to a stoppable load time table read from the setting information stored in the information storage unit 452, or the priority of the load device 257 or the load device 353. Is determined based on the above. The instruction unit 456 instructs the power supply control device 251 of the power supply source system 25 to stop the power supply of a part of the load device 257. Further, the instruction unit 456 controls the conversion device 352 of the customer power system 35 so as to stop the power supply of a part of the load device 353.

  According to an instruction from the control device 45, the supply source power system 25 supplies power from the standby power supply to the customer power system 35, and the customer power system 35 receives the power supplied from the supply source power system 25, The power is supplied to the load device 353 (step S135). Specifically, the power supply control device 251 of the power supply source system 25 converts the power generated by the emergency power generation device 254 or the power discharged from the power storage device 256 into the AC network 511 according to an instruction from the control device 45. And the private line 521, or one or both of the private line network 512 and the private line 521, to control the supply to the customer power system 35. Further, the power supply control device 251 stops the power supply to a part of the load device 257 according to the instruction from the control device 45. When receiving the AC power supplied from the supply source power system 25, the customer power system 35 receives the AC power by the power receiving and transforming device 351 through the AC network 511 or operates the power receiving and transforming device 351 by itself. Switch to line network 512 to receive power. When receiving the DC power supplied from the supply source power system 25, the customer power system 35 receives the DC power from the conversion device 352 via the private line 521. The customer power system 35 supplies the power received from the supply source power system 25 to the load device 353.

  The power receiving and transforming device 351 of the customer power system 35 monitors a restoration signal of the power system. Upon confirming the restoration of the commercial power, the power receiving and transforming device 351 transmits a restoration notification signal to the control device 45 (step S140). When the information collection unit 451 of the control device 45 receives the power restoration signal (Step S145), the instruction unit 456 determines whether or not the customer power systems 35 of all the power consumers have recovered power (Step S150). If the instruction unit 456 determines that there is a customer power system 35 that has not yet been restored, it performs the processing from step S130 (or step S120 or step S125), and according to the priority order, The system 25 instructs whether or not to supply power to the customer power system 35 that is still out of service except for the restored customer power system 35. For example, the instruction unit 456 may perform the processing from step S130 when the elapsed time from the reception of the power failure signal is within a predetermined time, and perform the processing from step S120 or S125 when the elapsed time exceeds the predetermined time. Good.

  When the instruction unit 456 determines that the customer power systems 35 of all the power consumers have recovered power, the instruction unit 456 supplies the power from the standby power sources such as the emergency power generation device 254 and the power storage device 256 to the supply source power system 25. It instructs to stop the supply and instructs the customer power system 35 to receive commercial power (step S155). The power supply control device 251 of the power source power system 25 stops power generation of the emergency power generation device 254, discharge of the power storage device 256, transmission of power from the conversion device 253 to the private line 521, and reception and transformation of power according to instructions from the control device 45. The device 252 is controlled to receive commercial power from the AC network 511. When the power receiving and transforming device 351 of the customer power system 35 has been receiving power from the private line network 512, it switches to receiving power from the AC network 511 and stops receiving power from the private line 521 (step S160). The power control system 15 repeats the processing of FIG.

  According to the above-described embodiment, for example, when a power outage occurs in a wide area, power is supplied according to the priority of a power consumer, such as giving priority to a medical institution from a power supply source capable of supplying power. In addition, the minimum required power can be preferentially supplied to each power consumer. In addition, when the power consumption of the power consumer is small and there is surplus power at the power supply source, the power is supplied to the low-priority power consumer, or a low-priority supply such as a best-effort type is provided. It is also possible to supply the required amount of power to power consumers.

[Fifth Embodiment]
The power control system according to the present embodiment uses the storage battery as a regular power supply without a commercial power outage, and considers that the cost is optimal based on the amount of private power generation, power consumption, power rate (by hour), etc. in the customer's power system. The charge / discharge method is calculated to control the charge / discharge of the storage battery.

  FIG. 10 is a diagram illustrating an outline of the operation of the power control system according to the present embodiment. The building is provided with a source power system having a storage battery. The supply source power system may further include a generator that constantly generates power in an emergency or an emergency generator that generates power in an emergency. In the figure, only one building is shown, but the number of buildings in which the power supply system is installed can be arbitrary. The power supply system always discharges or stores the storage battery, and supplies the discharged power to the load in the building, sells it to retail electricity providers, etc., and sells it to the regulating power trading market. Or Alternatively, the power supply source system may supply (or sell) power discharged from the storage battery to the building of the power consumer.

  The power control system collects state information such as the amount of power generated by a generator installed in a building and the amount of electric power consumed by each load in real time, and stores these pieces of state information collected in the past as state information. Further, the power control system collects the weather (temperature, humidity) collected from outside and the market transaction price in the regulating power trading market or the like in real time, and stores it as externally collected information. The power control system includes past, present and forecast state information, electricity tariff information, past, present and forecast weather information and power selling price information such as market transaction prices, and forecast time zones. , The day of the week, the season, and the like, an arbitrary prediction technique using at least a part of the information is used to determine the timing of charging / discharging the storage battery at which the cost is optimal at the prediction target time. The electricity tariff indicates the rate of commercial power per unit power consumption for each time zone. This electricity tariff may include a price form that changes in real time, such as dynamic pricing. The power selling price may be, for example, a market price (spot price, futures, etc.), an imbalance fee price, a relative contract price, a FIT (Feed-in Tariff) price, or the like. For example, since the electricity rate is low at night, electricity is stored in the storage battery at night and discharged during the day, so that the cost can be reduced by utilizing the difference in the electricity rate. In addition, when conditions such as the time zone of the forecast target time, the weather, the season, and the market transaction price are similar to the conditions when the market transaction price is high, there is a possibility that the cost can be reduced by selling power. . The power control system controls the charging and discharging of the storage battery in real time based on the determined charging and discharging timing of the storage battery so as to optimize the cost.

  FIG. 11 is a functional block diagram showing a configuration of a power control system 16 according to the fifth embodiment, in which only functional blocks related to the present embodiment are extracted and shown. In the figure, the same parts as those of the power control system 15 according to the fourth embodiment shown in FIG. 5 are denoted by the same reference numerals, and description thereof will be omitted. The power control system 16 includes one or more source power systems 25, one or more customer power systems 35, and a controller 46 that controls the source power system 25 and the customer power system 35. When the power supply source does not supply power to the customer power system 35, the power control system 16 may not include the customer power system 35. In this case, the power receiving and transforming device 252 of the supply source power system 25 is not connected to the private line network 512, and the conversion device 253 is not connected to the private line 521.

  The control device 46 includes an information collection unit 461, an information storage unit 462, and a control unit 463. The information storage unit 462 corresponds to the information storage units 402, 412, and 422 of the first to third embodiments, and the information collection unit 461 is the information collection units 401, 411, and 421 of the first to third embodiments. Is equivalent to The control unit 463 corresponds to the control units 403, 413, 423 of the first to third embodiments.

  The information collecting unit 461 collects state information from the power supply power system 25, and obtains information on weather (temperature, humidity) and information on real-time market transaction prices and the like in a market for regulating power from an external device. The information storage unit 462 stores various information. The information storage unit 462 stores the result information in which the state information collected by the information collection unit 461 is associated with the information collection time. In addition, the information storage unit 462 stores information such as weather and market transaction price as externally collected information in association with the information collection time. Further, the information storage unit 462 stores setting information such as a priority and a rated power consumption of each load of a power supply source, a stoppable load time table and the like, and various kinds of information including a commercial electricity tariff.

  The control unit 463 includes: a power tariff stored in the information storage unit 462; a past, present and predicted state information acquired by the information collection unit 461 or stored in the information storage unit 462; Based on information such as current and forecast market transaction prices, past, present and forecast weather, and information on at least part of time of forecast target time, day of the week, season, etc. In addition, the charge / discharge schedule of the power storage device 256 that can reduce the charge during the prediction target time (for example, from the present time to a predetermined time ahead) is calculated for each predetermined time. When performing the discharge, the control unit 463 determines whether to sell the discharged power, supply the power to the load device 257, or supply the discharged power to the customer power system 35. Control unit 463 instructs power supply control device 251 of supply source power system 25 to charge and discharge power storage device 256 according to the charge and discharge schedule. When supplying to the customer power system 35, the control unit 463 instructs the customer power system 35 to receive power from the supply source power system 25.

  The power supply control device 251 of the power supply source system 25 performs charging / discharging from the power storage device 256 and power transmission to the AC network 511 or the private line network 512 or the AC network in the power receiving and transforming device 252 in accordance with an instruction from the control device 46. It controls power reception from 511 and power transmission to the private line 521 in the conversion device 253 or power transmission stop.

  Specifically, when power is always stored, the power supply control device 251 controls the power receiving and transforming device 252 to receive power from the AC network 511, the conversion device 253 supplies power to the power storage device 256, and The power transmission to the power supply 521 is controlled to be stopped.

  In the case where the power storage device 256 is constantly discharged and supplied to the load device 257, the power supply control device 251 controls the power receiving and transforming device 252 to stop the power reception and power transmission to and from the AC network 511, and the conversion device 253. Controls the power discharged from the power storage device 256 to be supplied to the load device 257. If the power discharged from the power storage device 256 is less than the power consumption of the load device 257, the power supply control device 251 controls the power receiving and transforming device 252 to receive power from the AC network 511.

  In addition, when the power storage device 256 is constantly discharged to sell power to the regulating power trading market or the like, the power supply control device 251 transmits the power discharged from the power storage device 256 by the conversion device 253 to the power receiving and transforming device 252, The power receiving and transforming device 252 is controlled to transmit power to the AC network 511.

  In addition, when the power storage device 256 is constantly discharged and supplied to the customer power system 35, the power supply control device 251 transmits the power discharged from the power storage device 256 by the conversion device 253 to the power receiving and transforming device 252, and The substation 252 controls to transmit power to the AC network 511 or the private line network 512, or the converter 253 controls to transmit the power discharged from the power storage device 256 to the private line 521. Alternatively, the power supply control device 251 transmits the power discharged from the power storage device 256 by the conversion device 253 to the power receiving and transforming device 252 and the private line 521, and the power receiving and transforming device 252 transmits the power to the AC network 511 or the private line network 512. Such control may be performed. According to the instruction from the control device 46, the customer power system 35 receives one or both of the power receiving from the AC network 51 or the private line network 512 in the power receiving and transforming device 351 and the power receiving from the private line 521 in the converting device 352. Then, power discharged from the power storage device 256 is received.

  For example, in the case of a sunny day, the amount of photovoltaic power generation increases, adjusting power is required, and the market price of the adjusting power trading market rises. The control unit 463 of the control device 46 discharges a marginal amount of power stored in the power storage device 256 to return to the coordinating power market, since the profit from trading in the coordinating power market is larger than the effect of reducing the electricity rate of commercial power. Control to sell. The power supply control device 251 of the power system 26 controls to discharge from the power storage device 256 and transmit power from the power receiving and transforming device 252 to the AC network 511 according to an instruction from the control device 46.

  On the other hand, on a rainy day, the amount of photovoltaic power generation is scarce and adjustment power is not required, so that the market price drops. The control unit 463 of the control device 46 determines that the discharge power from the power storage device 256 is to be used for the peak shift in the daytime period, since the effect of reducing the electricity rate is greater than the profit from the trading in the regulation power market. The power supply control device 251 of the power supply source system 25 controls the discharge from the power storage device 256 and the supply to the load device 257 according to an instruction from the control device 46.

  In an emergency, the control unit 463 of the control device 46 stores the result information stored in the information storage unit 462, the past, present, and predicted state information acquired by the information collection unit 461 or stored in the information storage unit 462. Based on at least a part of the information such as the weather and the time zone of the forecast target time, the day of the week, the season, and the like, the power generation amount by the emergency power generation device 254 and the power generation The amount of discharge from power storage device 256 is calculated. The control unit 463 instructs the power supply system 25 to generate power by the emergency power generation device 254, discharge from the power storage device 256, partially stop the load device 257, and the like based on the calculation result. The power supply control device 251 of the power supply source system 25 performs power generation by the emergency power generation device 254, discharge from the power storage device 256, and stops some of the load devices 257 according to instructions from the control device 46, and operates in an emergency. Control is performed so that power is supplied only to the load device 257 to be controlled.

  According to this embodiment, the storage battery installed in the customer's building can be utilized at all times for energy saving and cost reduction. In addition, instead of selling the power to the regulating power trading market or the like, the power source power system may sell the power discharged from the storage battery to the power consumer through a predetermined power tariff. As a result, a power consumer can purchase power at a lower rate than commercial power. In addition, by setting the power supply source and the power consumer to one-to-many or many-to-many, the standby power supply of one power supply source is shared by a plurality of power consumers, and the number of the standby power supply as the whole power control system is increased. Can be suppressed.

[Sixth Embodiment]
The power control system according to the fourth embodiment uses a storage battery in an emergency, and the power control system according to the fifth embodiment always uses a storage battery. The power control system according to the sixth embodiment uses a storage battery both constantly and in an emergency. Therefore, the power control system of the present embodiment calculates the storage battery charging capacity required in the event of a power outage in real time, and constantly calculates the dischargeable power capacity that exceeds the required charging capacity. It is utilized for cost optimization as in the fifth embodiment. On the other hand, in an emergency, the power control system according to the present embodiment performs the same operation as the fourth embodiment.

  FIG. 12 is a diagram illustrating an outline of the operation of the power control system according to the present embodiment. Although FIG. 1 shows one building of the power supply source and one building of the power consumer, the number of the building of the power supply source and the building of the power consumer can be arbitrary.

  The power supply building is provided with a power supply system having a backup power supply such as a storage battery or an emergency generator. The source power system may include a generator that constantly generates power in an emergency. The source power system supplies power to the load of the power source. A building of a power consumer is provided with a consumer power system and supplies power to a load of the power consumer. The source power system may include a generator, such as a solar generator or a wind generator.

  The power control system is based on the amount of power generated by the generator and emergency generator at the power supply source, the amount of power consumed by the load, the amount of power stored and discharged by the storage battery, the amount of power supplied to the power consumer, and the load on the power consumer. State information such as power consumption is collected in real time, and the time-series state information collected in the past is stored as actual information. Further, the power control system periodically receives information such as weather (temperature and humidity) and market transaction prices in a market for regulating power from the outside, and stores the received information in association with the reception time.

  The power control system performs power generation prediction in the prediction target time in real time based on the past, current, and predicted power generation amounts of the generator and at least a part of the past, current, and predicted weather condition information. In addition, the power control system includes past, present, and predicted state information at the power supply source, a stoppable load time table, past, current, and predicted weather information, a time zone of a prediction target time, a day of the week, a season, and the like. Using at least a part of the information described above, the emergency load capacity at the power supply source is predicted in real time by an arbitrary prediction technique. Further, the power control system includes the past, present and predicted state information, the stoppable load time table, the past, present and predicted weather information, the time zone of the prediction target time, the day of the week, the season, etc. Using at least a part of the information, the load capacity at the time of emergency in the power consumer is predicted in real time.

  The power control system calculates the storage capacity required in an emergency (hereinafter, also referred to as “emergency required”) based on these predictions, and further calculates the storage battery rated or actually stored. The prediction of the surplus storage capacity (hereinafter, also referred to as “surplus”) exceeding the storage capacity required for an emergency in the capacity is calculated in real time. At this time, the power control system calculates a time until the maintenance person arrives at the power supply source building based on the position information of the maintenance person of the power supply source system. The power control system calculates the amount of power that needs to be supplied to the power supply source and the power consumer during the time until the maintenance person arrives, and adds the calculated power amount to the emergency necessary amount.

  At all times, the power control system controls the charging and discharging of the storage battery in real time so as to optimize the cost by performing the same control as in the fifth embodiment, with the spare storage capacity as the dischargeable power, Make effective use of energy and cost savings. In an emergency, similarly to the fourth embodiment, the power control system controls the storage capacity required for an emergency and supplies the power to an optimal power consumer. With such control, the power control system of the present embodiment optimizes the capacity management of the storage battery.

  FIG. 13 is a functional block diagram illustrating the configuration of the power control system 17 according to the present embodiment, and only functional blocks related to the present embodiment are extracted and shown. In the figure, the same parts as those of the device according to the fourth embodiment shown in FIG. 5 are denoted by the same reference numerals, and the description thereof will be omitted. The power control system 17 includes one or more supplier power systems 25, one or more customer power systems 35, a maintenance person position management device 47 for managing the position of a maintenance person, the supply source power system 25 and the customer power And a control device 48 for controlling the system 35. The control device 48 corresponds to the control device 40 of the first embodiment, the control device 41 of the second embodiment, or the control device 42 of the third embodiment. The maintenance person position management device 47 and the control device 48 may be integrated.

The maintenance person position management device 47 includes a reception unit 471, a maintenance person management information storage unit 472, a maintenance person position information acquisition unit 473, a predicted installation time calculation unit 474, and a notification unit 475.
The receiving unit 471 receives maintenance person position information indicating the current position of the maintenance person from the communication terminal 61 held by the maintenance person. The maintenance person management information storage unit 472 stores the maintenance person position information and the maintenance person address information of each maintenance person, and the information of the maintenance person who can or cannot be driven to the power customer building. The maintenance person position information indicates the position of the maintenance person. The maintainer address information indicates an address, such as a mail address or a telephone number of the communication terminal 61, used when notifying the maintainer.

  The maintenance person position information acquisition unit 473 acquires the position information of the maintainable maintenance person from the maintenance person management information storage unit 472. Based on the position information of the maintenance person acquired by the maintenance person position information acquisition unit 473, the estimated delivery time calculation unit 474 calculates a prediction that is required until the maintenance person arrives at the building of the electric power customer in charge from the current position. The estimated delivery time, which is the time, is calculated. The estimated delivery time calculation unit 474 selects, for each building of the power consumer, a maintenance person who has the shortest estimated delivery time from among maintenance workers who can be delivered to the building. The estimated delivery time calculation unit 474 notifies the control device 48 of the estimated delivery time of the selected maintenance person for each building of the power consumer.

  When the notification unit 475 receives a notification that a power failure has occurred in the power supply source or the power consumer building, the notification unit 475 supplies power to the power supply source building or the power consumer building in which the power failure has occurred. The maintenance person address information of the maintenance person selected for the power supply source building to be performed is read from the maintenance person management information storage unit 472. The notification unit 475 transmits the information indicating that the maintenance person is instructed to drive to the power supply building with the read maintenance person address information as the destination.

  The control device 48 includes an information collection unit 481, an information storage unit 482, and a control unit 483. The information storage unit 482 corresponds to the information storage units 402, 412, and 422 of the first to third embodiments, and the information collection unit 481 is the information collection units 401, 411, and 421 of the first to third embodiments. Is equivalent to The control unit 483 corresponds to the control units 403, 413, and 423 of the first to third embodiments.

  The information collecting unit 481 collects status information from the power supply power system 25 and the customer power system 35, and obtains information on weather (temperature and humidity) from an external device, and information on market transaction prices and the like in a coordination market. To get. The information storage unit 482 stores various information. The information storage unit 482 stores the result information in which the state information collected by the information collection unit 481 is associated with the information collection time. In addition, the information storage unit 482 stores information such as weather and market transaction price as externally collected information in association with the information collection time. The information storage unit 482 further stores setting information. The setting information includes the rated storage capacity of the power storage device 256, the priority and rated power consumption of each of the load device 257 of the power supply source and the load device 353 of the power customer, the stoppable load time table, and the priority of each power customer. And the power demand of each power consumer in an emergency.

  The control unit 483 includes a dischargeable time calculation unit 484, a discharge execution time acquisition unit 485, an instruction unit 486, and a cost saving effect calculation unit 489. The dischargeable time calculation unit 484 calculates a predicted recovery time obtained by adding the predicted installation time and the time required for emergency recovery in an emergency. Further, the dischargeable time calculation unit 484 includes setting information stored in the information storage unit 482 and past, present and predicted state information and weather information acquired by the information collection unit 481 or stored in the information storage unit 482. The load device 257 in the building of the power supply source and the power supply source by an arbitrary prediction technology using at least part of the information and the information such as the time zone of the prediction target time, the day of the week, and the season. The emergency predicted power consumption and the constantly predicted power consumption of the load device 353 in the building of the power consumer receiving the power supply are calculated. The dischargeable time calculation unit 484 calculates the required storage capacity in an emergency, which is the amount of power when the predicted power consumption in the emergency is used for the predicted recovery time. The dischargeable time calculation unit 484 calculates a value obtained by subtracting the emergency storage capacity from the rated storage battery capacity (or the current storage battery capacity) of the power storage device 256 provided in the power supply source power supply system 25, or A value obtained by removing a predetermined margin from the value is calculated as a storage capacity for a margin. The dischargeable time calculation unit 484 calculates a dischargeable time, which is a time during which the always-predicted power consumption can be supplied, from the storage capacity for the margin.

  The discharge execution time acquisition unit 485 acquires a discharge execution time, which is a time during which the power supply source system 25 as the power supply source has discharged from the power storage device 256, in real time.

  The instruction unit 486 transmits a command for controlling the power supply source system 25 and the customer power system 35. The instruction unit 486 includes a discharge instruction unit 487 and a charge instruction unit 488. The discharge instruction unit 487 transmits a discharge command from the power storage device 256 to the supply source power system 25 according to the time when the cost saving effect is obtained. Charging instruction unit 488 transmits a command to charge power storage device 256 to supply source power system 25 according to a time at which cost saving effect is obtained after power storage device 256 discharges for a dischargeable time.

  The cost-saving effect calculation unit 489 calculates the cost-saving effect by controlling the charging and discharging of the power storage device 256 of the power supply source system 25.

FIG. 14 is a diagram illustrating an example of storage battery management in the power control system 17 that is linked to the maintenance person real-time position information.
The maintenance person carries a portable communication terminal 61 such as a smartphone. The communication terminal 61 includes a GPS (Global Positioning System) as a position information acquisition unit that acquires information on the current position. The communication terminal 61 notifies the maintenance person position management device 47 of position information indicating the current position at regular time intervals. Based on the position information received from each maintenance person's communication terminal 61, the maintenance person position management device 47 estimates the time required for each maintenance person to arrive at the power supply source building. Is calculated and managed in real time at any time.

  The control device 48 calculates a predicted recovery time by adding the predicted installation time and the time required for emergency recovery in an emergency. Further, the control device 48 calculates the predicted power consumption in the emergency and always in each of the building of the power supply source and the building of the power consumer. The control device 48 excludes the emergency storage capacity required to use the estimated power consumption in the emergency for the estimated recovery time from the storage battery capacity of the storage battery (power storage device 256) installed in the power supply building. The remaining storage capacity is calculated. The control device 48 calculates a dischargeable time, which is a time during which the always-predicted power consumption can be supplied, from the spare power storage capacity.

  For example, it is assumed that the time required for emergency recovery in an emergency is one hour, and the predicted power consumption in an emergency is 100% of the predicted power consumption in a normal state. It is also assumed that the predicted power consumption can be supplied for three hours from the storage battery capacity. When the maintenance person is in the power supply source building, the estimated delivery time is 0 or close to 0, and the estimated restoration time is 1 hour, so the dischargeable time is 2 hours. On the other hand, if the maintenance person is at home or the like, and the estimated delivery time is 1.5 hours, the estimated recovery time is 2.5 hours and the possible discharge time is 0.5 hours.

  The control device 48 calculates the dischargeable time of each storage battery of each power supply source building in real time. The control device 48 determines a time when there is a cost saving effect, issues a command for discharging from the storage battery to the supply source power system 25 at that time, and controls to perform discharging until the dischargeable time is reached. The supply source power system 25 discharges the storage battery based on a command from the control device 48 and supplies it to the load device 257, supplies the discharge power to the customer power system 35, or supplies the power to the retail power company or the like. Sell electricity or sell it to the market for regulating power. The control device 48 calculates the cost saving effect of controlling the charging and discharging of the storage battery, and accumulates the calculation result.

FIG. 15 is a flowchart illustrating a storage battery management process in the power control system 17 that is linked to the maintenance person real-time position information.
The receiving unit 471 of the maintenance person position management device 47 periodically receives maintenance person position information from the communication terminal 61 of each maintenance person and writes it in the maintenance person management information storage unit 472. In addition, the maintenance person who is unable to carry out work or the like notifies the maintenance person position management device 47 of the impossibility of carrying out by using the communication terminal 61. The receiving unit 471 writes the information of the maintenance person who has notified the improper delivery to the maintenance person management information storage unit 472. When it becomes possible to execute the installation after the notification that the installation is impossible, the maintenance person notifies the maintenance person position management device 47 of the cancellation of the installation impossible through the communication terminal 61. The receiving unit 471 deletes the information of the maintenance person who has notified that the installation is possible, from the information of the maintenance impossible person who is not stored stored in the maintenance person management information storage unit 472.

  The maintenance person position information acquisition unit 473 of the maintenance person position management device 47 acquires the position information of the dispatchable maintenance person from the maintenance person management information storage unit 472 except for the maintenance person who has registered the information about the non-reachable. (Step S205). Based on the position information of each maintenance person acquired by the maintenance person position information acquisition unit 473, the estimated installation time calculation unit 474 calculates the estimated installation time of the electric power customer who is in charge of the maintenance person to the building ( Step S210). Specifically, the estimated delivery time is calculated based on the distance calculated from the position information of the maintenance person and the position information of each building of the power consumer, and the means of transportation (car, train, bicycle, etc.), Calculated based on road congestion, train timetable, and the like. The estimated delivery time calculation unit 474 selects, for each building of the power consumer, a maintenance person who has the shortest estimated delivery time from among maintenance workers who can be delivered to the building. The predicted installation time calculation unit 474 notifies the control device 48 of the predicted installation time of the maintenance person selected for the building for each power consumer building. The maintenance person position management device 47 performs the processing of steps S205 to S210 as needed, such as at a predetermined cycle or every time position information is received.

  The power control system 17 performs the processing after step S215 for each building of the power consumer. First, the dischargeable time calculation unit 484 of the control device 48 calculates the dischargeable time of the power storage device 256 included in the power supply power system 25 of the building of the power consumer (step S215). For example, it is assumed that the storage capacity of the power storage device 256 can supply the load capacity of the design load for three hours, and always supplies 100% of the load capacity in an emergency. Like the control unit 483 of the fourth embodiment, the dischargeable time calculation unit 484 calculates a power supply source from a current time to a predetermined time ahead and a power consumer who is a power supply destination of the power supply source. The predicted actual load capacity (power demand) is calculated. When it is predicted that the actual load is 50% of the design load for 6 hours from the current time, the dischargeable time calculation unit 484 determines that the power storage capacity of the power storage device 256 is 6 hours. The dischargeable time calculation unit 484 subtracts a time obtained by adding the predicted installation time and a predetermined recovery work time (for example, one hour) from the six hours, and sets the result as a dischargeable time. The control device 48 calculates the dischargeable time at any time, for example, by performing the process of step S215 each time the estimated time of delivery is received from the maintenance person position management device 47.

  The discharge instruction unit 487 instructs the power supply power supply system 25 to perform the discharge for the dischargeable time calculated in step S215 from the power storage device 256 in accordance with the time at which the cost saving effect is obtained in the power supply source building. (Step S220). For example, similarly to the fifth embodiment, the discharge instructing unit 487 reduces the electricity bill in the power supply building or monetizes the power transaction with the outside, such as the peak cut, the peak shift by the discharge, and the use of the external adjustment power. Predict the time zone in which the maximum merit is maximized, and perform discharge.

  The power supply control device 251 of the power supply power system 25 starts discharging from the power storage device 256 according to the instruction from the control device 48 (step S225). When supplying the discharge power from power storage device 256 to load device 257, power supply control device 251 controls conversion device 253 to supply the power discharged from power storage device 256 to load device 257. If the power discharged from the power storage device 256 is less than the power consumption of the load device 257, the power supply control device 251 controls the power receiving and transforming device 252 to receive power from the AC network 511.

  When selling the discharged power to a retail electricity supplier or the like, or selling the power to a regulating power trading market or the like, the power supply control device 251 causes the conversion device 253 to transmit the power discharged from the power storage device 256 to the power receiving and transforming device 252. And the power receiving and transforming device 252 is controlled to transmit power to the AC network 511.

  When supplying the discharged power to the customer power system 35, the power supply control device 251 converts the power discharged from the power storage device 256 into AC by the conversion device 253 and transmits the AC power to the power receiving and transforming device 252. The control may be performed such that the device 252 transmits power to the AC network 511 or the private line network 512, the conversion device 253 controls power to be transmitted to the private line 521 with direct current, or both. . The customer power system 35 receives power discharged from the power storage device 256 according to an instruction from the control device 46, and receives power from the AC grid network 511 or the private line network 512 by the power receiving and transforming device 351 and from the private line 521 by the conversion device 352. Then, the power is supplied to the load device 353.

  The power supply control device 251 of the power supply power system 25 notifies the control device 48 of the discharge execution time as needed (step S230). The discharge execution time acquisition unit 485 of the control device 48 receives the information on the discharge execution time notified from the power supply source system 25 (step S235). The discharge execution time acquisition unit 485 determines whether the received discharge execution time has reached the dischargeable time (step S240). Since the process of step S215 is performed as needed, the dischargeable time is updated when a maintainable maintainer leaves the building or the like. Therefore, the latest dischargeable time is used for the comparison. If the discharge execution time acquisition unit 485 determines that the discharge execution time has not reached the dischargeable time, the processing from step S235 is repeated.

  Then, when the discharge execution time acquisition unit 485 determines that the discharge execution time has reached the dischargeable time, the charge instruction unit 488 instructs the supply source power system 25 to end the discharge (step S245). When the stored power is supplied to the customer power system 35 via the private line network 512, the charging instruction unit 488 of the control device 48 further connects the power receiving device 351 to the customer power system 35 with the private line network 512. To the AC network 511, and control to stop power reception from the private line 521 by the power receiving and transforming device 351.

  The power supply control device 251 of the power supply source system 25 terminates the discharge from the power storage device 256 according to the instruction from the control device 48, starts the power reception from the AC network 511 in the power receiving and transforming device 252, and starts the power conversion in the conversion device 253. The power transmission to the private line 521 is controlled to be stopped (step S250). The power supply control device 251 notifies the control device 48 of the end of the discharge from the power storage device 256 (step S255).

  The charging instruction unit 488 of the control device 48 receives the notification of the end of the discharge from the power supply power system 25 (Step S260). The charge instructing unit 488 instructs the power supply source system 25 that has finished discharging from the power storage device 256 to start charging the power storage device 256 in accordance with the time at which the cost saving effect is obtained (step S265). For example, the charging instruction unit 488 predicts a time zone (for example, from 10:00 a.m. to 8:00 a.m. at night) when the power rate is lowest in the power supply contract of the power supply source building, and instructs to execute charging. The power supply control device 251 of the power supply power system 25 starts charging the power storage device 256 based on the instruction from the control device 48 (step S270). When the charging of the power storage device 256 is completed, the power supply control device 251 notifies the control device 48 of the end of the charging (step S275).

  When the charging instruction unit 488 of the control device 48 receives the charge completion (step S280), the cost-saving effect calculation unit 489 determines the cost reduced by discharging the power storage device 256 in the power supply source system 25 and the charge of the power storage device 256. Calculate the cost difference. For example, the cost-saving effect calculation unit 489 reads, from the information storage unit 482, a time during which the power storage device 256 has been discharged and a time at which the power storage device 256 has been charged in the supply source power system 25. The cost-saving effect calculation unit 489 calculates the saved electricity rate from the amount of power discharged by the power storage device 256 and the tariff at the time of discharging, and calculates the amount of power charged by the power storage device 256 and the electricity rate at the time of charging. From the tariff, calculate the electricity charge required for charging. The cost-saving effect calculation unit 489 stores the difference between the electricity rates as the cost difference in the information storage unit 482 (step S285). When selling power, the cost-saving effect calculation unit 489 calculates the price of selling power from the information on the market transaction price at the time of selling power and the amount of discharged power, and adds the price to the cost difference.

  When a power outage occurs in the power supply source building, the power supply control device 251 of the power supply source system 25 operates. In the case where a power outage occurs in the power consumer building, the power receiving and transforming device 351 of the customer power system 35 operates. The power failure notification is transmitted to the maintenance person position management device 47 via the control device 48 or directly. The maintenance person position management device 47 transmits a dispatch instruction to the power customer building to the communication terminal 61 of the maintenance person selected for the building of the power customer in which the power failure has occurred. The communication terminal 61 displays the installation instruction received from the maintenance person position management device 47, and the maintenance person confirms the displayed installation instruction. The control device 48 controls the power supply from the supply source power system 25 to the customer power system 35 by performing the same processing as in the fourth embodiment.

  According to this embodiment, one storage battery can be used for both emergency use and regular use. That is, the control device 48 calculates in real time the required storage capacity for an emergency in the event of a power outage at the present time, and utilizes the storage capacity with a sufficient dischargeable capacity for cost optimization. In addition, by setting the power supply source and the power consumer to one-to-many or many-to-many, the standby power supply of one power supply source can be shared and used by a plurality of power consumers. The number of standby power supplies can be reduced for the entire system.

  According to the embodiment described above, the power control systems (for example, the power control systems 15 and 17) include the power supply source power system (for example, the power supply system 25) and the power demand of the power customer. It has a system (for example, the customer power system 35) and a control device (for example, the control devices 45 and 48). The supply source power system includes a power storage device (e.g., a power storage device 256) that performs power storage and discharge, a power supply control unit that controls reception of commercial power, and supply of power discharged by the power storage device to a customer power system ( For example, a power supply control device 251) is provided. The customer power system includes a power receiving unit (for example, a power receiving and transforming device 351 and a conversion device 352) that receives commercial power and power supplied from a power supply source system, and loads the power received by the power receiving unit on a load of the power customer. And a power distribution unit (for example, a conversion device 352) that supplies power to the power supply. The control device, in an emergency when a commercial power outage occurs, instructs the power supply control unit to discharge the power of the amount of discharge based on the predicted power demand in the customer power system from the power storage device and supply the power to the customer power system. A control unit (for example, the control units 453 and 483) for instructing is provided.

  The power supply control unit further controls the supply of the commercial power and the power discharged from the power storage device to the load of the power supply source, and the control unit controls the predicted power demand in the customer power system and the power supply source system in an emergency. May be instructed to discharge the power of the discharge amount based on the power storage device and to supply the power to the customer power system and the load (for example, the load device 257) of the power supply source. Further, the control unit may control so as to limit the power supply to a part of the load when the amount of power that can be supplied from the power storage device is less than the predicted power demand.

  When the power control system has a plurality of power source power systems, the control unit determines the amount of power that can be supplied from the power storage device of each of the plurality of power source power systems and the predicted power demand in each of the one or more customer power systems. And a power supply source system that supplies power to each of the customer power systems.

  Note that the control unit is configured to control a case where there are a plurality of customer power systems to which power is supplied from the power storage device and the amount of power that can be supplied from the power storage device is less than a total of the predicted power demand of the supply destination. Alternatively, control may be performed such that the power discharged from the power storage device is supplied to the customer power system selected based on the priority of the customer power system. Further, when the amount of power that can be supplied from the power storage device is less than the total of the predicted power demand of the supply destination, the control unit may determine the priority of the supply request power of the customer power system and the predicted power demand. The power supply amount to the customer power system may be determined in such a manner as to control the power discharged from the power storage device to be supplied to the customer power system according to the determined power supply amount.

  In addition, the control unit, when there is no power outage of commercial power, always reserves the surplus power required for an emergency in the amount of power stored in the power storage device, and transmits the surplus power to the customer power system. The power supply control unit may be instructed to supply the power to at least one of the loads of the power supply source or to transmit the power to a power network for selling power. The control unit may calculate the amount of power required for an emergency based on predetermined information. For example, the control unit may calculate the amount of power required for an emergency based on the predicted power demand and the predicted time required for the maintenance person to move to the location of the power supply system such as the building of the power customer. calculate.

  According to the present embodiment, it is possible to use a backup power supply while reducing the energy and cost savings of a power consumer using a commercial power supply and the burden on the BCP.

  The functions of the control devices 40, 41, 42, 45, 46, 48 and the maintenance person position management device 47 in the above-described embodiment may be realized by a computer. In that case, a program for realizing these functions may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM, and a storage device such as a hard disk built in a computer system. Further, a "computer-readable recording medium" refers to a communication line for transmitting a program via a network such as the Internet or a communication line such as a telephone line, and dynamically holds the program for a short time. Such a program may include a program that holds a program for a certain period of time, such as a volatile memory in a computer system serving as a server or a client in that case. Further, the above-mentioned program may be for realizing a part of the above-mentioned functions, and may be for realizing the above-mentioned functions in combination with a program already recorded in the computer system.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments and includes a design and the like within a range not departing from the gist of the present invention.

  This is applicable when a backup power supply is installed in another facility.

10, 11, 12, 15, 16, 17 ... power control system 20, 22-1 to 22-M, 25, 26 ... supply power system 30, 30-1 to 30-N, 30-1-1 to 30 -M-N _M , 35 ... Consumer power system 40,41,42,45,46,48 ... Control device 47 ... Maintenance person location management device 51,54 ... AC network 52,55 ... DC network 53 ... Communication Network 61 Communication terminal 201 Generator 202 Emergency generator 203 Storage batteries 211 and 211a AC power flow control device 212 Power receiving device 213 Power distribution device 214 DC power supply 215 Power distribution devices 216 and 216a DC power flow control Devices 221, 222, 321, 322 Load 251 Power supply control device 252 Power receiving / transforming device 253 Conversion device 254 Emergency power generation device 255 Power generation device 256 Power storage device 257 Negative Device 311 Power receiving device 312 Power distribution device 313 DC power supply 314 Power distribution device 315 Switching device 351 Power receiving and transforming device 352 Conversion device 353 Load device 401, 411, 421, 451, 461, 481 Information collection unit 402, 412, 422, 452, 462, 482 ... information storage units 403, 413, 423, 453, 463, 483 ... control unit 454 ... demand amount calculation unit 455 ... supply amount calculation units 456, 486 ... instruction unit 471 ... reception Unit 472 maintenance person management information storage unit 473 maintenance person position information acquisition unit 474 delivery expected time calculation unit 475 notification unit 484 dischargeable time calculation unit 485 discharge execution time acquisition unit 487 discharge instruction unit 488 Charge instructing section 489 ··· Cost saving effect calculating section 511 · · · AC network 512 · Own line network 521 · Own line

Claims (11)

A power supply system of a power supply source, a customer power system of a power customer, and a power control system including a control device,
The power control system has a plurality of the customer power systems,
The source power system comprises:
A standby power supply having at least one of a storage battery and an emergency generator;
Power supply control unit that controls power reception of commercial power and supply of the power output from the standby power supply to the customer power system,
The customer power system includes:
A power receiving unit that receives commercial power and power supplied from the power supply source system,
A power distribution unit that supplies the power received by the power receiving unit to the load of the power consumer,
The control device includes:
When a power outage of commercial power occurs, the control unit instructs the power supply control unit to output power based on the predicted power demand in the customer power system from the standby power source and supply the power to the customer power system,
The control unit, when the amount of power that can be supplied from the standby power supply is less than the total of the predicted power demand of the destination, one of the guarantee type or the best effort type is set as the priority. The power supply to the customer power system is determined so as to satisfy the supply request power in which the guarantee type is set, among the power demands of the customer power system, and the standby power supply is determined according to the determined power supply. Instructs the power supply control unit to output power,
The control unit, when the supply request power set in the guarantee type can not be satisfied, a penalty for not being able to cover the predetermined required power between the power consumer and the power supply source Determine the power supply to the customer power system so that the sum of the amounts is the lowest,
A power control system characterized by the above. The power supply control unit further controls the supply of commercial power and the power output from the standby power supply to the load of the power supply source,
The control unit outputs power based on predicted power demand in the customer power system and the supply source power system from the standby power source when a commercial power outage occurs, and outputs the customer power system and the power supply source. Instructing the power supply control unit to supply to the load of
The power control system according to claim 1, wherein: The control unit restricts power supply to a load of the power consumer or a part of a load of the power supply source when the power amount that can be supplied from the standby power source is less than the predicted power demand amount. Control,
The power control system according to claim 2, wherein: The power control system includes a plurality of the power source power systems,
The control unit, based on the amount of power that can be supplied from the standby power supply of each of the plurality of supply source power systems and the predicted power demand in each of the one or more customer power systems, Determining the source power system that supplies power to each system;
The power control system according to any one of claims 1 to 3, wherein: The control unit supplies the power output from the standby power supply to at least one of the customer power system and the load of the power supply source at any time when there is no power outage of commercial power, or Instruct the power supply control unit to transmit power to the power network for,
The power control system according to claim 2, wherein: The control unit, at all times when a commercial power outage does not occur, surplus power after securing a necessary amount of emergency power of the power stored in the storage battery, the customer power system and the Supply to at least one of the load of the power supply source, or, instruct the power supply control unit to transmit power to the power network for power sale,
The power control system according to claim 5, wherein: The control unit calculates the power required for the emergency, based on the predicted power demand and a predicted time required for a maintenance person to move to the location of the power supply source system,
The power control system according to claim 6, wherein: The power receiving unit receives power supplied from the power supply source system by one or both of AC and DC,
The power control system according to any one of claims 1 to 7, wherein: The control unit calculates the predicted power demand based on at least a part of past, current and predicted power consumption and weather information of the load and time information.
The power control system according to any one of claims 1 to 8, wherein: A power supply source power system, a customer power system of a power customer, and the control device in a power control system having a control device,
The power control system has a plurality of the customer power systems,
The control device includes:
Upon occurrence of a power outage of commercial power, the power based on the predicted power demand in the customer power system is output from a standby power supply including at least one of a storage battery and an emergency generator to be supplied to the customer power system. A control unit for instructing the power supply system,
With
The control unit, when the amount of power that can be supplied from the standby power supply is less than the total of the predicted power demand of the destination, one of the guarantee type or the best effort type is set as the priority. The power supply to the customer power system is determined so as to satisfy the supply request power in which the guarantee type is set, among the power demands of the customer power system, and the standby power supply is determined according to the determined power supply. Directs the source power system to output power,
The control unit, when the supply request power set in the guarantee type can not be satisfied, a penalty when the predetermined required power between the power consumer and the power supply source could not be covered Determine the power supply to the customer power system so that the sum of the amounts is the lowest,
A control device characterized by the above-mentioned. A power control method executed in a power control system including a power supply source power system, a power customer power system, and a control device,
The power control system has a plurality of the customer power systems,
The power supply control step of controlling the supply of the commercial power and the supply of the power output by the standby power supply including at least one of the storage battery and the emergency generator to the customer power system,
A power receiving step in which the customer power system receives commercial power and power supplied from the supply source power system, and supplies the received power to a load of the power customer;
The controller instructs the power control system to output and discharge the power based on the predicted power demand in the customer power system from the standby power source and supply the power to the customer power system when a power outage of commercial power occurs. Supply instruction step to perform,
In the supply instruction step, when the amount of power that can be supplied from the standby power supply is less than the total of the predicted power demand of the supply destination, one of the guarantee type and the best effort type is set as the priority. Among the required power supply of the customer power system, the power supply to the customer power system is determined such that the guarantee type satisfies the set required power supply, and the power supply is determined according to the determined power supply. A backup power supply instructs the power control system to output power,
In the supply instructing step, when the supply request power in which the guarantee type is set cannot be satisfied, a predetermined required power between the power consumer and the power supply source cannot be covered. Determine the power supply to the customer power system so that the sum of the penalty amount is the lowest,
A power control method comprising:

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