JP6813409B2 - Power management device, power management method, power management program - Google Patents

Description

The present invention relates to a power management device, a power management method, and a power management program.

Under the planned value simultaneous equal amount system, the electric power company submits a power receiving plan for power generation (reverse power flow) and demand (forward power flow) to the general power transmission and distribution company, and the actual value is based on the planned value. It is required to be the same amount at the same time. In this case, if an imbalance occurs in which the actual value is excessive or insufficient with respect to the planned value, the general power transmission and distribution business operator will incur costs for adjusting the imbalance, and the electric power company and the electric power company will incur costs. Settlement corresponding to imbalance (imbalance settlement) is performed with the general power transmission and distribution business operator.

As an electric power company, it is necessary to adjust the electric power so that payment due to imbalance settlement does not occur. Therefore, the following power management devices are known. That is, the power management device is the sum of the value obtained by multiplying the power value procured from the renewable energy power generation facility by the first price coefficient and the value obtained by multiplying the power value procured from other power generation facilities by the second price coefficient. The power value of the difference between the procurement function, which is a function, and the power value procured from the renewable energy power generation facility, minus the actual power value procured from the renewable energy power generation facility, is multiplied by the third price coefficient. Based on the imbalance function, which is a function, the ratio of the electric power values procured from the renewable energy power generation facility is obtained (see, for example, Patent Document 1).

JP-A-2015-230544

For example, there is known a power management system called TEMS (Town Energy Management System) or CEMS (Community Energy Management System) that controls power for a plurality of consumer facilities in a predetermined power management area. For example, when an electric power company manages such a power management system, it is conceivable that the electric power company contracts with a general power transmission and distribution company for a simultaneous planned value equalization system for each power management area. In this case, since the power receiving plan corresponding to the entire power management area is formulated, it is required to realize the same amount of planned values at the same time in the power management area.
However, Patent Document 1 is limited to the description of the configuration in which the ratio of the electric power value procured from the renewable energy power generation facility is obtained by taking a single photovoltaic power generation facility as an example. Therefore, depending on the technique described in Patent Document 1, adjustments corresponding to the same amount of planned values at the same time are appropriately performed in response to variations in generated power and demand power among a plurality of consumer facilities in the power management area. That is difficult.

The present invention has been made in view of such circumstances, and makes it possible to appropriately adjust the electric power corresponding to the same amount of planned values at the same time in accordance with the electric power management area where a plurality of consumer facilities exist. The purpose is.

In order to solve the above-mentioned problems, the present invention divides the imbalance value based on the difference between the planned area power value and the actual area power value in the power management area by the number of each consumer facility in the power management area. The first calculation unit that calculates the balance mean value, the second calculation unit that calculates the actual value difference that is the difference between the actual demand and the actual power generation at the consumer facility, and the imbalance average calculated by the first calculation unit. The determination unit that determines whether or not the value falls within the actual value difference calculated by the second calculation unit, and the imbalance average value for each customer facility based on the determination result falls within the actual value difference. In that case, a planned value for controlling the energy equipment of the consumer facility is generated based on the imbalance average value, and if there is a consumer facility whose imbalance average value does not fall within the actual value difference, A plan to generate a planned value for controlling the energy equipment of the consumer facility so as to reduce the imbalance value while keeping each consumer facility within the range based on the actual value difference of the own consumer facility. It has a value generator.

Further, in the present invention, the first calculation unit divides the imbalance value based on the difference between the area power planned value and the area power actual value in the power management area by the number of each consumer facility in the power management area. The average value is calculated, the second calculation unit calculates the actual value difference, which is the difference between the actual demand at the consumer facility and the actual power generation, and the judgment unit calculates the imbalance average value calculated by the first calculation unit. However, it is determined whether or not the difference is within the actual value difference calculated by the second calculation unit, and the planned value generation unit determines that the imbalance average value for each customer facility is the actual value difference based on the determination result. When the planned value for controlling the energy equipment of the consumer facility is generated based on the imbalance average value, and there is a consumer facility whose imbalance average value does not fall within the actual value difference. Generates a planned value for controlling the energy equipment of the consumer facility so as to reduce the imbalance value while keeping the range based on the actual value difference of the own consumer facility for each consumer facility. It is a power management method.

Further, in the present invention, the computer is subjected to the imbalance average value obtained by dividing the imbalance value based on the difference between the area power planned value and the area power actual value in the power management area by the number of each consumer facility in the power management area. The first calculation unit to be calculated, the second calculation unit to calculate the actual value difference which is the difference between the actual demand and the actual power generation in the consumer facility, and the imbalance average value calculated by the first calculation unit are the second. Judgment unit that determines whether or not it falls within the actual value difference calculated by the calculation unit, and if the imbalance average value for each customer facility falls within the actual value difference based on the determination result, the imbalance A planned value for controlling the energy equipment of the consumer facility is generated based on the average value, and if there is a consumer facility whose imbalance average value does not fall within the difference between the actual values, the self-demand for each consumer facility In order to function as a planned value generator that generates a planned value for controlling the energy equipment of the consumer facility so as to reduce the imbalance value while keeping the range based on the actual value difference of the house facility. Power management program.

As described above, according to the present invention, the imbalance can be reduced by making a charge / discharge plan of the storage battery in consideration of the charge / discharge limit according to each customer facility. As a result, it is possible to adjust the electric power corresponding to the same amount of the planned values at the same time corresponding to the electric power management area where a plurality of consumer facilities exist.

It is a figure which shows the configuration example of the electric power management system in 1st Embodiment. It is a figure which shows the structural example of the electric facility about the consumer facility in 1st Embodiment. It is a figure which shows the configuration example of the controller in a customer facility in 1st Embodiment. It is a figure which shows the configuration example of the electric power management apparatus in 1st Embodiment. It is a flowchart which shows the example of the processing procedure which the electric power management apparatus in 1st Embodiment executes in relation to the planned value simultaneous equal amount control. It is a flowchart which shows an example of the electric power control processing based on the planned value executed by the electric power management apparatus in 1st Embodiment. It is a flowchart which shows the example of the processing procedure which determines the control target value for each consumer facility executed by the electric power management apparatus in 1st Embodiment. It is a figure explaining the relationship between the plan and the actual result about demand and power generation as an example about a certain consumer facility 100 belonging to the electric power management area 10. It is a conceptual diagram which shows the relationship between the timing of determining a planned value and the time zone of performing control based on a planned value.

<First Embodiment>
FIG. 1 shows an overall configuration example of the power management system according to the present embodiment. The electric power management system in the present embodiment collectively manages electric power in consumer facilities such as residential, commercial facilities, and industrial facilities corresponding to a plurality of consumer facilities in a predetermined area range. Such a power management system corresponds to, for example, TEMS (Town Energy Management System) and CEMS (Community Energy Management System).

The electric power management system of the present embodiment manages electric power for each electric facility of each consumer facility 100 in a certain range of area shown as the electric power management area 10 in FIG. The consumer facility 100 corresponds to, for example, a residential facility, a commercial facility, an industrial facility, or the like.
The area corresponding to the power management area 10 of the present embodiment may be formed by one area range or may be formed by a plurality of geographically discrete area ranges.

In the present embodiment, the consumer facility 100 includes a power generation device that generates power by a solar cell and a storage battery. Further, the consumer facility 100 may be provided with either a solar cell or a storage battery. Further, the consumer facility 100 may be provided with neither a solar cell nor a storage battery.
The power generation device and storage battery included in the consumer facility 100 are grid-connected to a commercial power source. As a result, the consumer facility 100 equipped with the power generation device or the storage battery reverse-feeds the power generated by the power generation device or the power output by the storage battery to the power system (distribution network) of the commercial power source, and the power system You can sell electricity through.

The power management area 10 of the present embodiment has, for example, a contract with a general power transmission and distribution business operator corresponding to the planned value simultaneous equal amount system. That is, the operator of the power management area 10 formulates a power reception plan for the power management area 10 every predetermined unit planning time (for example, 30 minutes), and sends the formulated power reception plan to the general power transmission and distribution business operator. hand in. In addition, if the actual power reception in the power management area 10 causes an excess or deficiency (imbalance) with respect to the power reception plan, the settlement corresponding to the imbalance between the electric power company and the general power transmission and distribution company (Imbalance settlement) is performed.

The power receiving plan in this embodiment includes a power generation plan and a demand plan. The power generation plan may have a planned value of the power management area 10 as a whole for power to be reverse-flowed to the distribution network, or an individual planned value of the consumer facility 100. The demand plan may include a planned value of the electric power management area 10 as a whole for electric power purchased from the distribution network in a forward flow, or an individual planned value of the consumer facility 100.
Under the planned value simultaneous equal amount system corresponding to this embodiment, it is required that the actual results for each of the power generation plan and the demand plan are achieved as planned. That is, in the planned value simultaneous equal amount system corresponding to this embodiment, it is required that the actual results of the reverse power flow from the power management area 10 are not excessive or insufficient with respect to the power generation plan, and the power management area 10 is in order. It is required that the actual performance of electricity that receives the tidal current is just right for the demand plan.
In the present embodiment, the generated power means the power to be reverse power flowed to the distribution network. In addition, the demand power refers to the power that flows forward from the distribution network.

Each of the consumer facilities 100 can communicate with the power management device 300 by being connected to the network NW.

The power management device 300 executes power control for the electrical equipment in the entire consumer facility 100 belonging to the power management area 10. For this purpose, the power management device 300 of the figure is connected to each of the consumer facilities 100 via the network NW so as to be able to communicate with each other. As a result, the power management device 300 can control the operation of the electrical equipment provided in the consumer facility 100.

FIG. 2 shows an example of a configuration of electrical equipment in the consumer facility 100. The consumer facility 100 in the figure includes a power meter 101, a distribution board 102, a power generation device 103, a storage battery 104, a load 105, a communication modem 106, and a controller 200 in the consumer facility. That is, the figure shows an example of a consumer facility 100 including both a power generation device and a storage battery.

The watt-hour meter 101 measures the demand power and the generated power. That is, the watt hour meter 101 measures the received power. The received power is, for example, the difference between the demand power and the generated power.
In the consumer facility 100, the electric power supplied to the distribution board 102 from the commercial power supply line DL on the general power transmission and distribution business operator side is the demand electric power. On the other hand, the electric power output from the power generation device 103 or the storage battery 104 and supplied from the distribution board 102 to the commercial power supply line DL via the power meter is the generated electric power. When the forward power flow corresponding to the demand power is set to the positive direction, if the generated power corresponding to the reverse tide amount is smaller than the demand power corresponding to the forward power flow, the received power is measured as a positive value and is relative to the demand power. If the generated power is large, the received power is measured as a negative value.

The distribution board 102 distributes and supplies the electric power supplied from the commercial power source to the storage battery 104, the load 105, and the like. Further, the distribution board 102 can output the electric power output from the power generation device 103 to the commercial power supply line DL via the electric power meter 101 due to reverse power flow.

The power generation device 103 is a facility that receives sunlight to generate power. The power generation device 103 includes a solar cell and a PCS (Power Conditioning System). The power generation device 103 receives sunlight to generate power, converts the power obtained by the power generation into alternating current by PCS, and outputs the power.

The electric power generated by the power generation device 103 can be supplied as a power source for the load 105. Further, the electric power generated by the power generation device 103 can be charged to the storage battery 104.
Further, the electric power generated by the power generation device 103 can be reverse-flowed by being output from the distribution board 102 to the commercial power supply line DL via the electric power meter 101.

The storage battery 104 is a facility that stores electric power input for charging and discharges and outputs the stored electric power. The storage battery 104 includes, for example, a storage battery and an inverter. The storage battery stores (charges) electric power and outputs (discharges) the stored electric power. The inverter converts the electric power for charging the storage battery from alternating current to direct current, and converts the electric power output from the storage battery by discharge from direct current to alternating current. That is, the inverter performs bidirectional conversion of the electric power input / output by the storage battery 104.

The storage battery 104 can be charged by inputting the electric power of the commercial power supply supplied through the distribution board 102. Further, the storage battery 104 can be charged by inputting the electric power generated by the power generation device 103.
Further, the storage battery 104 can supply the stored electric power as a power source for the load 105. Further, the storage battery 104 can reverse power flow by outputting the stored electric power from the distribution board 102 to the commercial power supply line DL via the electric power meter 101.

The load 105 collectively indicates a predetermined device or equipment that consumes electric power for its own operation in the consumer facility 100. It should be noted that the types and numbers of devices and equipment as loads provided in each consumer facility 100 may be different.
The load 105 can operate by inputting the commercial power supply supplied from the distribution board 102. Further, the load 105 can operate by inputting the electric power generated by the power generation device 103. Further, the load 105 can operate by inputting the electric power output from the storage battery 104.

The communication modem 106 communicates with the power management device 300 via the network NW.

The controller 200 in the consumer facility controls the electrical equipment (power generation device 103, storage battery 104, load 105, communication modem 106, etc.) in the consumer facility 100.
Further, the controller 200 in the consumer facility can input the power consumption information measured by the power meter 101 and use the input power consumption information for various controls.
In addition, although this figure shows an example of a consumer facility 100 having both a power generation device and a storage battery, there is a demand that only one of the power generation device and the power storage device is provided or neither is provided. to obtain also house facilities, in which case the power generating device 103, the power storage batteries 104, or comprise only one, both with there may be consumers facility 100 that does not include even.

FIG. 3 shows a configuration example of the controller 200 in the customer facility provided in the customer facility 100. The consumer facility controller 200 shown in the figure includes an external communication interface 201, an externally compatible transmission / reception unit 202, an in-facility communication interface 203, an in-facility support transmission / reception unit 204, a power collection unit 205, a control unit 206, and a storage unit 207.

The external communication interface 201 communicates via the network NW, for example, via the communication modem 106.
The externally compatible transmission / reception unit 202 controls the transmission / reception of data by the network NW by using the external communication interface 201.

The in-facility communication interface 203 communicates with the electrical equipment and the like in the consumer facility 100 provided by the facility.
The in-facility correspondence transmission / reception unit 204 controls the transmission / reception of data to / from the electrical equipment in the customer facility 100 via the in-facility communication interface 203.

The electric power collection unit 205 collects electric power-related information in the consumer facility. For example, the power collecting unit 205 can collect information on the received power measured by the power meter 101. Further, the power collecting unit 205 may collect the power generated by the power generation device, the remaining amount (stored power) of the storage battery 104, the charge / discharge power, the load power (power consumption) due to the load 105 and the like.

The control unit 206 executes various controls corresponding to the function as the controller 200 in the customer facility. The control unit 206 transmits the information of the generated power and the demand power collected by the power collection unit 205 to the power management device 300.

The power meter 101 may be used as a smart meter, for example, so that information on the measured received power can be transmitted to the power management device 300 via the communication line NL via the network NW. In this case, it is not necessary for the power collecting unit 205 to collect the received power measured by the power meter 101.
The storage unit 207 stores various types of information used by the control unit 206.

FIG. 4 shows a configuration example of the power management device 300. The power management device 300 in the figure includes a communication unit 301, a control unit 302, and a storage unit 303.

The communication unit 301 communicates with the controller 200 in the customer facility in the customer facility 100 via the network NW.

The control unit 302 controls the operation of the electrical equipment of each consumer facility 100 in the power management area 10. The control unit 302 of the present embodiment includes a calculation unit 320, a determination unit 321, a planned value generation unit 322, and a power control unit 323.
The calculation unit 320 calculates an imbalance average value obtained by dividing an imbalance value based on the difference between the planned area power value and the actual area power value in the power management area by the number of each consumer facility in the power management area.
In addition, the calculation unit 320 calculates the actual value difference, which is the difference between the actual demand at the consumer facility and the actual power generation.
Further, the calculation unit 320 calculates the imbalance value as a value corresponding to any one of the following states of the power demand shortage, the power demand surplus, the power generation surplus, and the power generation shortage in the power management area 10. ..
In addition, the calculation unit 320 calculates the difference between the actual demand at the consumer facility and the actual power generation from the actual demand and the actual power generation in the first reference time.

The determination unit 321 determines whether or not the imbalance average value calculated by the calculation unit 320 falls within the actual value difference calculated by the calculation unit 320.

The plan value generation unit 322 controls the energy equipment of the consumer facility based on the imbalance average value when the imbalance average value for each consumer facility falls within the actual value based on the determination result of the determination unit 321. If there is a consumer facility whose imbalance average value does not fall within the actual value, the planned value to be calculated is generated, and if there is a consumer facility, each customer facility is within the range based on the actual value difference of the own consumer facility. Generate a planned value to control the energy equipment of the consumer facility so as to reduce the balance value.
Here, the actual demand and the actual power generation in the consumer facility are determined based on the measured values obtained from the electric power meter provided in the consumer facility.
The power meter is provided in, for example, the consumer facility 100, and the power meter includes a demand meter for measuring the power used in one consumer facility 100 and the sun in one consumer facility 100. There is a power generation meter that measures the power generated by a power generation device (an example of energy equipment) that uses natural energy such as an optical power generation device.

Further, the planned value generation unit 322 generates a planned value for controlling the supply of electric power from the energy device in the consumer facility 100 or the storage of electric power in the energy device based on the determination result.
Further, the planned value generation unit 322 generates the planned value as a planned value in a time zone after a predetermined time from the first reference time.
The time zone after a predetermined time with respect to the first reference time is, for example, a time zone from 3:00 pm to 3:30 pm when the first reference time is 2:00 pm. As long as it is after the first reference time and the time zone does not change drastically from the tendency of power usage in the first reference time, the time zone after the first reference time can be used for any time. The length of time as this time zone can be, for example, 30 minutes of the demand time.
The interval between the first reference time and the next arrival first reference time is arbitrary, but can be, for example, 30 minutes of the demand time. As a result, by associating the arrival interval of the first reference time with the length of time as the time zone, it becomes easy to manage the control.

The electric power control unit 323 controls the electric power equipment in each consumer facility 100 belonging to the electric power management area 10 so that the planned value of the electric power determined corresponding to the electric power management area 10 is achieved. As the planned value used here, the planned value generated by the planned value generation unit 322 is used.

The storage unit 303 stores information used by the control unit 302 in power management. The storage unit 303 of the present embodiment stores power generation plan information 331, demand plan information 332, and consumer facility basic information 333.

The power generation plan information 331 is information indicating the power generated by the formulated power generation plan. The demand plan information 332 is information indicating the demand power according to the formulated demand plan.

The consumer facility basic information 333 includes basic information about each consumer facility 100 in the power management area 10. The basic information of the consumer facility corresponding to one consumer facility 100 includes the consumer facility ID uniquely indicating the corresponding consumer facility 100, the electric power equipment provided in the corresponding consumer facility 100, and the corresponding consumer facility 100. Information such as the address of the controller 200 in the consumer facility provided by the customer facility is included.

The power management device 300 of the present embodiment having the above configuration performs control (simultaneous equal amount control of planned values) for achieving a power management plan based on the planned values formulated corresponding to the power management area 10. Execute. An example of a processing procedure executed by the power management device 300 of the present embodiment in connection with the simultaneous equal amount control of planned values will be described with reference to the flowcharts of FIGS. 5, 6 and 7.

In FIG. 5, the control unit 302 determines whether or not the adjustment start time has been reached (step S101). Under the planned value simultaneous equal amount system corresponding to this embodiment, for example, the generated power and the required power of each consumer facility 100 are totaled for each unit planned time of 30 minutes, which is the demand time, and the totaled result. Based on, formulate a planned value of electric power including a power generation plan and a demand plan for each unit planning time. The adjustment start time corresponds to the timing at which the unit planning time starts. If the adjustment start time does not arrive (step S101-NO), after a certain period of weight processing, it is determined again whether or not the adjustment start time has been reached.
When it is determined that the adjustment start time has been reached (step S101-YES), the control unit 302 executes the power control process based on the planned value (step S102).

Then, the control unit 302 determines whether or not the unit planning time started in response to step S101 has ended (step S103). The power control unit 322 continues the power control in step S102 until the unit planning time has ended (step S103-NO). Then, when the unit planning time ends (step S103-YES), the process shown in the figure ends.

The flowchart of FIG. 6 shows an example of the power control process based on the planned value as step S102.

The control unit 302 acquires the power generation plan and the demand plan corresponding to the current unit planning time started in response to step S101 from the power generation plan information 331 and the demand plan information 332 stored in the storage unit 303 (step S201). ..
Further, the control unit 302 is actually generating power (also referred to as received power), which is the power actually in demand corresponding to the current state of each consumer facility 100 belonging to the power management area 10. The actual generated power, which is the electric power, is acquired (step S202).
At this time, the control unit 302 transmits the received power request to the controller 200 in the customer facility for each customer facility 100. The controller 200 in the consumer facility transmits the information of the received power input from the power meter 101 by the power collecting unit 205 to the power management device 300 in response to the reception of the received power request. In this way, the control unit 302 acquires the information of the received power transmitted from the controller 200 in the consumer facility of each consumer facility 100.
Further, the control unit 302 transmits a power generation request to the controller 200 in the customer facility for each customer facility 100. The controller 200 in the consumer facility transmits the information of the generated power input from the power meter 101 by the power collecting unit 205 to the power management device 300 in response to the reception of the generated power request. In this way, the control unit 302 acquires the information of the generated power transmitted from the controller 200 in the consumer facility of each consumer facility 100.

The control unit 302 is based on the power generation plan and demand plan acquired in step S201, and the actual power generation power and actual demand power corresponding to the present for each consumer facility 100 belonging to the power management area 10 acquired in step S202. , The control target value for the energy device for each consumer facility 100 is determined (step S203).
The electric power control unit 322 transmits the control target values determined for each consumer facility 100 in step S203 to the corresponding consumer facilities 100 (step S204).
In response to the reception of the control target value, the consumer facility controller 200 of each consumer facility 100 belonging to the power management area 10 performs charge / discharge control of the storage battery 104 so that the generated power or the required power becomes the control target value. .. As a result, the planned value simultaneous equal amount control corresponding to the power generation plan as the power management area 10 is executed.

In addition, the processing of the figure may be performed once corresponding to each unit planning time, or may be performed at a fixed time that further divides the unit planning time.

Next, the process of determining the control target value for each customer facility in step S203 described above will be further described with reference to the flowchart of FIG. 7.
The calculation unit 320 of the control unit 302 calculates the imbalance amount of the power management area 10 at the current stage (step S301).
Here, first, the calculation unit 320 obtains the actual demand and the actual power generation in the electric power management area 10.
The actual demand of the electric power management area 10 is the total value obtained by summing the actual demand of each consumer facility 100 belonging to the electric power management area 10 obtained from the electric power meter and each consumer facility belonging to the electric power management area 10. It is obtained by finding the difference from the total value obtained by summing the power generation results of 100. Here, if the difference is a negative value, it is calculated as 0.
The power generation record of the power management area 10 is the sum of the total value obtained by summing the power generation record of each consumer facility 100 belonging to the power management area 10 and the demand record of each consumer facility 100 belonging to the power management area 10. It can be obtained by finding the difference from the total value obtained by. Here, if the difference is a negative value, it is calculated as 0.

Next, the calculation unit 320 obtains a demand planning power generation plan for the power management area 10.
The demand plan of the power management area 10 is the total value obtained by summing the demand plans of each customer facility 100 belonging to the power management area 10 in the controlled time zone and each customer facility belonging to the power management area 10. It is obtained by finding the difference from the total value obtained by summing the power generation plans in each of the 100 controlled time zones. Here, if the difference is a negative value, it is calculated as 0.
The power generation plan of the power management area 10 is the total value obtained by summing the power generation plans of each customer facility 100 belonging to the power management area 10 in the controlled time zone and each customer facility belonging to the power management area 10. It is obtained by finding the difference from the total value obtained by summing the demand plans in each of the 100 controlled time zones. Here, if the difference is a negative value, it is calculated as 0.

In this way
(1) Total value of actual demand of each consumer facility 100 in the electric power management area 10 (2) Total value of actual power generation of each consumer facility 100 in the electric power management area 10 (3) Each consumer facility in the electric power management area 10 Total value of 100 demand plans (4) The total value of the power generation plans of each consumer facility 100 in the power management area 10 can be obtained.

Then, based on the calculation results of (1) to (4), the calculation unit 320 has four states of power demand shortage, power demand surplus, power generation surplus, and power generation shortage in the power management area. A value corresponding to any one state (imbalance) of (imbalance) can be calculated.

(A) Total demand plan ((3) above) -Total demand actual ((1) above)> 0 The imbalance of the power management area 10 is a state in which the actual demand is less than the planned demand. It is an imbalance of surplus demand (consumed with less forward power than planned). The imbalance value of the demand surplus is obtained by (total demand plan of the power management area 10-total demand of the power management area 10).
Therefore, in order to eliminate this imbalance, it is possible to eliminate the demand by increasing the demand in the electric power management area 10, that is, by increasing the forward tide. Therefore, the energy equipment (for example, the storage battery) of each consumer facility 100 is in order. It is desirable to control the charging target in order to increase the power flow and charge the storage battery.

(B) Total demand plan ((3) above) -Total demand actual ((1) above) <0 The imbalance of the power management area 10 is in a state where the actual demand is larger than the planned demand. It is an imbalance of lack of demand (forward power is consumed more than planned). The imbalance value of this demand shortage is obtained by (total demand of power management area 10-total demand plan of power management area 10).
Therefore, in order to eliminate this imbalance, it is possible to reduce the demand in the power management area 10, that is, to reduce the forward tide. Therefore, the energy equipment (for example, the storage battery) of each consumer facility 100 is in order. It is preferable to control the discharge target in order to supply electric power from the storage battery to the self-consumer facility 100 in order to reduce the tidal current.

(C) Total power generation plan ((4) above) -Total power generation record ((2) above)> 0 The imbalance of the power management area 10 is a state in which the actual power generation is less than the power generation plan. It is an imbalance of power generation shortage. The imbalance value of this power generation shortage is obtained by (total power generation plan of power management area 10-total power generation record of power management area 10).
Therefore, in order to eliminate this imbalance, the generated power in the power management area 10 should be increased, that is, the generated power by the photovoltaic power generation device should be discharged from the storage battery and reversely flowed as the generated power. Therefore, it is preferable to control the energy equipment (for example, storage battery) of each consumer facility 100 to be discharged.

(D) Total power generation plan ((4) above) -Total power generation record ((2) above) <0 The imbalance of the power management area 10 is a state in which there are many actual power generations compared to the power generation plan. It is an imbalance of power generation surplus. The imbalance value of the power generation surplus is obtained by (total power generation results in the power management area 10-total power generation plan in the power management area 10).
Therefore, in order to eliminate this imbalance, it is possible to reduce the power generated in the power management area 10, that is, to prevent reverse power flow of at least a part of the power generated by the solar power generation device. Therefore, it is preferable to control the energy equipment (for example, storage battery) of each consumer facility 100 so that at least a part of the generated power is charged to the storage battery of the customer facility 100 in order to reduce the reverse power flow.

When the imbalance value corresponding to the imbalance state is calculated, the calculation unit 320 determines the charge / discharge amount for each customer facility 100 (step S302).
Here, as a basic logic, the tidal current (forward tidal current, reverse power flow) between each consumer facility 100 is subtracted, and the storage battery is based on the difference between the planned value and the actual result as the power management area 10 (town). Charge or discharge from the storage battery. Here, the power management area 10 can form one balancing group as one "town", and the imbalance can be reduced. Further, here, when charging / discharging the storage battery, the charge / discharge amount is determined for each customer facility 100. This makes it possible to determine the charge / discharge amount in consideration of the equipment limitation of the consumer facility 100.
In this embodiment, the following (i) to (iv) are considered as the equipment restrictions.
(I) The storage battery of each customer facility 100 does not charge and discharge the self-storage battery at the same time (ii) The storage battery of each customer facility 100 charges and discharges within the maximum output for both charging and discharging (iii) The storage battery of the consumer facility 100 charges and discharges within the capacity limit (iv) The storage battery of each consumer facility is considered to have the same specifications. In this embodiment, the limit based on the power meter is as follows (v). ) Is considered as a condition.
(V) Determine the upper limit value or lower limit value for charging / discharging from the value of the watt-hour meter before charging / discharging control to eliminate imbalance, and the meter value on the opposite side (for example, the demand meter value when discharge is limited, When the charge is limited, the case that affects the power generation meter value) is limited.
For example, when the demand meter value before charging / discharging is "200" and the power generation meter value is "500", when discharging, the same amount or more as the demand meter value "200" is discharged. If this happens, the power generation meter side will be affected, so the amount of discharge must be "200" or less. On the other hand, when charging, if the amount is equal to or more than the power generation meter value "500", it will affect the demand meter side, so the charge amount must be "500" or less. ..
Further, as another example, when the demand meter value before charging / discharging is "500" and the power generation meter value is "200", when discharging, is it the same amount as the demand meter value "500"? If it is discharged more than that, it will affect the power generation meter side, so the amount of discharge must be "500" or less. On the other hand, in the case of charging, if the amount is equal to or more than the power generation meter value "200", the demand meter side will be affected, so the charging amount must be "200" or less.

In consideration of the above (i) to (v), the calculation unit 320 sets the imbalance value based on the difference between the planned power value and the actual power value in the power management area 10 of the consumer facility 100 in the power management area 10. Calculate the imbalance average value divided by the number of houses (for example, the number of houses). The obtained imbalance average value is assigned as follows, for example.
(A) When the imbalance is surplus demand (in the case of (a) above)
The average value of imbalance obtained by dividing the surplus demand imbalance value of the power management area 10 by the number of houses is used as the charge amount of each house. (A) When the imbalance is insufficient in demand (in the case of (b) above). )
The average value of the imbalance obtained by dividing the demand shortage imbalance in the power management area 10 by the number of houses is the discharge amount of each house. (C) When the imbalance is insufficient power generation (in the case of (c) above)
The average value of imbalance obtained by dividing the power generation shortage imbalance in the power management area 10 by the number of houses is used as the discharge amount of each house. (D) When the imbalance is surplus power generation (in the case of (d) above)
The average value of imbalance obtained by dividing the surplus power generation imbalance in the power management area 10 by the number of houses is used as the charge amount of each house.

In this way, the charge amount or the discharge amount for each consumer facility 100 is determined according to the imbalance state as described in (a) to (d) above.

Next, the calculation unit 320 calculates the actual value difference, which is the difference between the actual demand at the consumer facility and the actual power generation, and determines the calculation result as an adjustable range for controlling the charge / discharge of the consumer facility 100. (Step S303). Here, the calculation unit 320 calculates using the measured value of the received power (demand record) and the measured value of the generated power (power generation record) obtained from the power meter. Here, the calculation unit 320 determines the adjustable range as follows according to the difference between the actual demand and the actual power generation (actual value difference).

Here, when discharging from the storage battery, there is a case where the demand in the consumer facility 100 is lowered (demand lowering discharge) in order to discharge the insufficient power from the storage battery to compensate for the demand planned value, and a power generation planned value. There is a case where the power generation in the consumer facility 100 is increased (power generation increase discharge) in order to discharge the insufficient electric power from the storage battery to make up for it.
In the case of charging the storage battery, the demand in the consumer facility 100 is increased (demand increase) so that the actual demand that is insufficient for the demand plan value can be brought closer to the demand plan by increasing the required power generation and charging the storage battery. (Charging) and the case where the power generation at the consumer facility 100 is reduced (power generation reduction charging) so as to approach the power generation plan by charging the storage battery with the generated power surplus with respect to the power generation planned value.
(A) Demand reduction Discharge adjustable range When demand record-power generation record> 0, any value of 0 or more (demand record-power generation record) or less (for example, (demand record-power generation record) is used).
Demand record-Power generation record> 0 if not
(I) Increased demand Charge adjustable range When demand record-power generation record <0, any of the above values (for example, (power generation record-demand record)) is used to charge the storage battery. Value in the range that does not exceed the rating)
Demand record-Power generation record <0 if not
(C) Power generation reduction Charge adjustable range Demand record-Power generation record <0, 0 or more (Power generation record-Demand record) One of the following values (for example, (Power generation record-Demand record) is used)
Demand record-Power generation record <0 if not
(E) Adjustable range for power generation and discharge When demand record-power generation record> 0, any of the above values (for example, (demand record-power generation record)) and the discharge of the storage battery Value in the range that does not exceed the rating)
Demand record-Power generation record> 0 if not

When the adjustable range is determined, the determination unit 321 determines whether or not the imbalance average value calculated by the calculation unit 320 falls within the actual value difference (adjustable range) calculated by the calculation unit 320 itself.
(Judgment 1) Whether or not "(A) Charge amount of each house as the imbalance average value of surplus demand" falls within "(I) Demand increase charge adjustable range" (Judgment 2) "(B) Whether or not the "discharge amount of each house as the imbalance average value of the demand shortage in) falls within the" (a) demand reduction discharge adjustable range "(judgment 3)" (c) imbalance average of the power generation shortage Whether or not the "discharge amount of each house as a value" falls within the "(e) power generation increase discharge adjustable range" (judgment 4) "(d) charge amount of each house as an average value of imbalance of power generation surplus" Whether or not "(u) power generation reduction charge adjustment range"

Here, the determination unit 321 determines the first when the imbalance state is "surplus demand", the second determination when the imbalance state is "insufficient demand", and the second determination when the imbalance state is "insufficient power generation". 3. If it is "surplus power generation", a judgment is made based on the judgment 4.

When the imbalance average value falls within the actual value difference (adjustable range) calculated by the calculation unit 320 based on the determination result of the determination unit 321 (step S304-within the range), the plan value generation unit 322 A planned value for controlling the storage battery is generated based on the charge amount or the discharge amount obtained as the imbalance average value, and the planned value is transmitted to each consumer facility 100 as a control target value by the communication unit 301 ((). Step S306).

On the other hand, in the plan value generation unit 322, when there is a consumer facility whose imbalance average value does not fall within the actual value difference (adjustable range) calculated by the calculation unit 320 based on the determination result of the determination unit 321 (step). In S304-outside the range), there is a plan to control the energy equipment of the consumer facility so as to reduce the imbalance value while keeping each consumer facility within the range based on the actual value difference of the own consumer facility. The value is generated by recalculating the charge / discharge amount. That is, the plan value generation unit 322 can adjust the imbalance average value of the customer facility 100 for which the upper limit value (or the lower limit value) of the adjustable range of the own consumer facility has not been reached. The upper limit value (or lower limit value) of the range is set, and the amount of charging or discharging is recalculated so as to be within the target of reducing or eliminating the imbalance in the power management area 10, and the obtained calculation result (plan). The value) is determined as the control target value, and the communication unit 301 transmits the planned value to each customer facility 100 as the control target value (step S306). As a result, the target value that takes into account the actual demand and the actual power generation of the consumer facility 100, and the planned value within the range that can be handled by the equipment of the consumer facility 100 is individually set for the consumer facility 100. To.
When the planned value is set, the power control unit 322 controls the charge / discharge operation of the storage battery 104 as described above, and the planned value is applied to the controller 200 in the consumer facility in the consumer facility 100 during the time zone to be controlled. The charging / discharging operation of the storage battery 104 is controlled by giving an instruction based on.

FIG. 8 is a diagram illustrating a relationship between a plan and an actual result regarding demand and power generation as an example of a certain consumer facility 100 belonging to the electric power management area 10. In this figure, the demand meter value, the power generation meter value, the demand plan value, and the power generation plan value are arranged side by side along the horizontal axis, and the vertical axis represents the magnitude of each value.
Regarding the state shown in FIG. 8A, when the demand meter value is larger than the planned demand value and the power generation meter value is larger than the planned power generation value (((a). The upper part of a) and the case where the demand meter value is smaller than the planned demand value and the power generation meter value is smaller than the planned power generation value (lower part of (a)). ) And is shown. In this case, since the control for simultaneously charging and discharging the storage battery of the consumer facility 100 is not performed, the control is different from the control in the present embodiment. For example, a customer in a state where the demand meter value is larger than the planned demand value and the power generation meter value is larger than the planned power generation value (upper part of (a)). Facility 100 and the case where the demand meter value is smaller than the planned demand value and the power generation meter value is smaller than the planned power generation value (lower part of (a)). Control such as interchange of electric power may be performed with the consumer facility 100.

Regarding the state shown in FIG. 8 (b), the demand meter value is smaller than the planned demand value, and the power generation meter value is larger than the planned power generation value (((). The upper part of b) and the case where the demand meter value is larger than the planned demand value and the power generation meter value is smaller than the planned power generation value (lower part of (b)). ) And is shown.
In the case shown in the upper part of (b), the consumer facility 100 is individually controlled based on the planned value in the demand increase charge adjustable range and the control based on the plan value in the power generation decrease charge adjustable range. Do it.
In the case shown in the lower part of (b), the consumer facility 100 is individually controlled based on the planned value in the demand lowering discharge adjustable range and the control based on the planned value in the power generation increase discharge adjustable range. Do.

FIG. 9 is a conceptual diagram showing the relationship between the timing for determining the planned value and the time zone for performing control based on the planned value.
The planned value generation unit 322 determines the planned value on the target day (corresponding to the current day) on the day before the target day to be controlled (noon of the previous day indicated by reference numeral A). Then, on the day of control, the plan value generation unit 322 controls the consumer facility 100 so as to be the plan value according to the plan value determined on the previous day. At that time, the calculation unit 320 calculates, for example, the difference between the actual demand and the actual power generation in the consumer facility 100 from the actual demand and the actual power generation in the first reference time (14:00 on the day indicated by reference numeral B). The planned value generation unit 322 sets the planned value determined by using the actual demand and the actual power generation in the first reference time by a predetermined time after the first reference time (from 15:00 indicated by reference numeral C). It is generated as a planned value in the time zone) until 15:30. The power control unit 323 controls charging / discharging in the consumer facility 100 according to the planned value generated by the planned value generating unit 322 in the time zone from 15:00 to 15:30. The relationship between the first reference time and the time zone is predetermined.
Further, the first reference time may be carried out at least once on the day of control, or by setting the first reference time at predetermined time intervals, the above-mentioned imbalance reduction can be achieved for each time zone. You may perform control for this.

According to the embodiment described above, the planned value generated by the planned value generation unit 322 may be a value for which a charge / discharge plan is made in consideration of the charge / discharge limit depending on the state of the power meter value of each consumer facility 100. Therefore, it is determined within the range based on the actual demand and power generation of the consumer facility 100, and the range that can be handled by the equipment of the consumer facility 100 (for example, the rated value that can be charged and discharged from the storage battery). A planned value that is within the range) is set for the consumer facility 100. Then, since the imbalance adjustment that exceeds the capacity of the equipment is not performed in the consumer facility 100, the imbalance can be controlled within a realistic range and the imbalance can be minimized.

In this way, in the present embodiment, every time the first reference time arrives, the planned value is updated according to the electric power state in each consumer facility 100, and then the electric power is individually controlled. As a result, in the power management area 10 of the present embodiment, control corresponding to the same amount of planned values is realized, and the formulated power generation plan and demand plan can be achieved.

The power management device 300, the controller 200 in the customer facility, and the like in the above-described embodiment may be realized by a computer. In that case, the program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed. The term "computer system" as used herein includes hardware such as an OS and peripheral devices. Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, or a storage device such as a hard disk built in a computer system. Further, a "computer-readable recording medium" is 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 period of time. It may also include a program that holds a program for a certain period of time, such as a volatile memory inside a computer system that serves as a server or a client in that case. Further, the above program may be for realizing a part of the above-mentioned functions, and may be further realized for realizing the above-mentioned functions in combination with a program already recorded in the computer system. It may be realized by using a programmable logic device such as FPGA (Field Programmable Gate Array).

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and the design and the like within a range not deviating from the gist of the present invention are also included.

10 Power management area, 100 Consumer facility, 101 Power meter, 102 Distribution board, 103 Power generator, 104 Storage battery, 105 Load, 106 Communication modem, 200 Consumer facility controller, 201 External communication interface, 202 External compatible transmitter / receiver , 203 In-facility communication interface, 204 In-facility correspondence transmission / reception unit, 205 Power collection unit, 206 control unit, 207 storage unit, 300 power management device, 301 communication unit, 302 control unit, 303 storage unit, 320 calculation unit, 321 judgment Department, 322 Plan value generation unit, 323 Power control unit, 331 Power generation plan information, 332 Demand plan information, 333 Consumer facility basic information

Claims (7)

The first calculation unit that calculates the imbalance average value obtained by dividing the imbalance value based on the difference between the area power plan value and the area power actual value in the power management area by the number of each customer facility in the power management area, and
The second calculation unit that calculates the actual value difference, which is the difference between the actual demand and the actual power generation at the consumer facility,
A determination unit that determines whether or not the imbalance average value calculated by the first calculation unit falls within the actual value difference calculated by the second calculation unit.
Based on the determination result, when the imbalance average value for each consumer facility falls within the actual value difference, a planned value for controlling the energy equipment of the consumer facility is generated based on the imbalance average value. However, if there is a consumer facility whose average imbalance value does not fall within the actual value difference, the in-balance is set within the range based on the actual value difference of the own consumer facility for each customer facility. A power management device having a planned value generation unit that generates a planned value for controlling the energy equipment of the consumer facility so as to reduce the balance value. The power management device according to claim 1, wherein the demand record and the power generation record in the consumer facility are determined based on the measured values obtained from the power meter provided in the consumer facility. The power management device according to claim 2, wherein the power meter is a demand meter and a power generation meter. The first calculation unit calculates the imbalance value as a value corresponding to any one of a state of insufficient power demand, surplus power demand, surplus power generation, and insufficient power generation in the power management area. And
The plan value generation unit generates a plan value for generating electric power from an energy device in the consumer facility or controlling the storage of electric power in the energy device based on the determination result. Claims 1 to 3. The power management device according to any one of the descriptions. The second calculation unit calculates the difference between the actual demand and the actual power generation at the consumer facility from the actual demand and the actual power generation in the first reference time.
The power management according to any one of claims 1 to 4, wherein the planned value generation unit generates the planned value as a planned value in a time zone after a predetermined time from the first reference time. apparatus. The first calculation unit calculates the imbalance average value obtained by dividing the imbalance value based on the difference between the area power planned value and the area power actual value in the power management area by the number of each customer facility in the power management area.
The second calculation unit calculates the actual value difference, which is the difference between the actual demand at the consumer facility and the actual power generation.
The determination unit determines whether or not the imbalance average value calculated by the first calculation unit falls within the actual value difference calculated by the second calculation unit.
When the planned value generation unit determines that the imbalance average value of each consumer facility falls within the actual value difference based on the determination result, the energy device of the consumer facility is used based on the imbalance average value. If a planned value to be controlled is generated and the imbalance average value does not fall within the actual value difference, the value of each customer facility is within the range based on the actual value difference of the own customer facility. A power management method for generating a planned value for controlling an energy device of the consumer facility so as to reduce the imbalance value. Computer,
The first calculation unit, which calculates the imbalance average value obtained by dividing the imbalance value based on the difference between the area power plan value and the area power actual value in the power management area by the number of each customer facility in the power management area.
The second calculation unit that calculates the actual value difference, which is the difference between the actual demand and the actual power generation at the consumer facility,
A determination unit that determines whether or not the imbalance average value calculated by the first calculation unit falls within the actual value difference calculated by the second calculation unit.
Based on the determination result, when the imbalance average value for each consumer facility falls within the actual value difference, a planned value for controlling the energy equipment of the consumer facility is generated based on the imbalance average value. However, if there is a consumer facility whose imbalance average value does not fall within the actual value difference, the in-balance is set within the range based on the actual value difference of the own consumer facility for each customer facility. A power management program for functioning as a planned value generator that generates a planned value for controlling the energy equipment of the consumer facility so as to reduce the balance value.

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