JP7033965B2 - Power control device and power control method - Google Patents

Description

The present invention relates to a power control device and a power control method, and more specifically, manages a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control the amount of power transmitted / received from the power system. Regarding a power control device and a power control method.

When the current FIT (Feed-in Tariff) system, which stipulates the purchase price of energy by law, is completed, it is expected that the purchase price of private power generation by renewable energy such as solar power generation will fall. Therefore, it is required to supply and supply privately-generated power without selling it. However, power generation using renewable energy such as solar power generation has a characteristic that the amount of power generation tends to fluctuate due to the influence of the natural environment.

On the other hand, when the supply and demand of electric power in an electric power company is tight, it is being considered that the electric power company requests each household to adjust the electric power (DR request or Demand Response request).
In the DR request, each household or business operator who is a contract consumer related to the power system applies for a power supply and demand forecast (operation plan) that can respond to the DR request, and according to the applied operation plan, the power load is reduced and the power storage device. It corresponds by performing charge / discharge control of.

The DR request is made in the form of presenting the ratio of power saving to the power consumption of the past actual results (for example, the average value of the past 5 days), which is called "baseline". If the contract consumer cannot respond to the DR request as a result, a penalty fee will be charged, or conversely, an incentive fee will be added by responding to the DR request.
In order to deal with such a situation, it is expected that the number of households and businesses that have a power storage device as well as a private power generation device will increase.

For each household and each business operator (hereinafter referred to as a unit consumer in this specification, the electric power system managed by each unit consumer is referred to as a unit consumer electric power system), the consumption due to the electric load is appropriately managed. Not only that, it is becoming important to manage the power generated in-house wisely, respond to DR requests, and fulfill social responsibilities. On the other hand, it is also important to realize economical energy management.
In this regard, the following techniques have been proposed (see, for example, Patent Document 1). That is, the photovoltaic power generation power and the demand power are predicted every day, and the prediction of the power to be transmitted / received from the power system on that day (transmission / reception power prediction) is obtained based on the predicted value.

When requesting power transmission / reception power prediction, the user sets a power control mode according to the user's idea, such as an ecological mode that emphasizes environmentality, an economy mode that emphasizes economic efficiency, and a DR mode that responds to social demands. The user can not only select any one power control mode, but also select a plurality of power control modes and determine the ratio of the selected power control modes.
The power control device calculates the power transmission / reception power prediction from the power system based on the power control mode set by the user. Then, the charge / discharge of the storage battery is controlled so that the power transmission / reception power from the power system matches the calculated power transmission / reception power prediction.

Japanese Unexamined Patent Publication No. 2016-059186

However, in power generation devices that use renewable energy whose amount of power generation is liable to fluctuate, and in unit consumer power systems that include a wide variety of power loads, the storage capacity to achieve the power control mode considered by the user is not always secured. Not always.
If power control is performed based only on the power supply-demand balance at that moment, it is conceivable that the remaining capacity of the power storage device will be exhausted or the battery will be fully charged. That is, it is not easy to manage the charge / discharge of the power storage device for use in the selected power control mode.
Furthermore, even if a DR request is received from the power system side, the unit consumer may not always be able to respond to the request, and the prediction accuracy of the power supply and demand cannot be guaranteed.
The present invention has been made in consideration of the above circumstances, and provides a power control device capable of both responding to a DR request and appropriately managing energy related to its own power generation and consumption. It is a thing.

The present invention is a device for managing a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control power transmitted / received from the power system, and the predicted power consumption of the power load. Receives information related to the predicted value providing unit that calculates the predicted power transmission / reception power based on the predicted power generation power of the power generation device and the capacity of the power storage device, and the adjusted power to be adjusted for the power transmission / reception power as a request from the power system side. The power storage device includes (1) the predicted power consumption, the predicted power generation power, and the predicted transmission. The predicted power transmission / reception power is calculated assuming that the private supply / supply capacity related to the difference in the received power and (2) the adjustment capacity related to the adjustment are individually provided, and the adjustment based on the information related to the adjustment power is performed. The communication unit determines whether or not the power can be adjusted or adjusted, the communication unit transmits the determined result to the power system side, and the charge / discharge control unit controls the charge / discharge of the power storage device according to the determination. Provide the device.

Further, from a different point of view, the present invention is a method of managing a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control power transmitted / received from the power system. The step of providing a predicted value for calculating the predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device, and the adjustment regarding the power transmission / reception power as a request from the power system side. A step of receiving information on the regulated power to be output, a step of adjusting and determining whether adjustment is possible or at least one of the adjustable powers based on the information on the regulated power, and a step of adjusting the power to be transmitted to the power system side, and a step thereof. In each of the predicted value providing step and the adjustment determination step, the power storage device comprises (1) the predicted power consumption, the predicted power generation power, and the step of controlling the charging / discharging of the power storage device according to the decision. Provided is a power control method for executing as having a private supply / supply capacity related to a difference in predicted power transmission / reception power and (2) an adjustment capacity related to the adjustment individually.

From a further different point of view, the present invention is a program that manages a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control power transmission / reception from the power system, and causes a computer to execute the program. The processing involves a step of providing a predicted value for calculating the predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device, and the power transmission / reception power as a request from the power system side. The process of receiving the information related to the adjusted power to be adjusted with respect to, and the adjustment decision process of determining at least one of the adjustable power or the adjustable power based on the information related to the adjusted power and transmitting it to the power system side. And the process of controlling the charging / discharging of the power storage device according to the determination, and in both the predicted value providing process and the adjustment determination process, the power storage device is (1) the predicted power consumption and the predicted. Provided is a power control program for executing a process assuming that the private supply / supply capacity related to the difference between the generated power and the predicted power transmission / reception power and (2) the adjustment capacity related to the adjustment are individually provided.

In the power control device according to the present invention, in the predicted value providing unit, the power storage device has (1) the capacity for private supply and demand related to the difference between the predicted power consumption, the predicted power generation power, and the predicted power transmission / reception power, and (2). ) The predicted power transmission / reception power is calculated assuming that the adjustment capacity related to the adjustment is individually provided, and whether or not the adjustment is possible or the adjustable power is determined based on the information related to the adjustment power. It is possible to achieve both response and appropriate energy management related to own power generation and consumption.
Specifically, the charge / discharge control unit separately secures the adjustment capacity and the private supply / supply capacity, and manages each charge / discharge individually. Therefore, the power storage device used in response to the request from the power system side. The capacity and remaining capacity can be easily grasped. Further, it is possible to easily grasp the capacity of the power storage device related to the adjustment of the difference between the power generated by the private power generation, the power supplied by the private power supply, and the power transmitted / received from the power system side.
In addition, a reasonable capacity for responding to the DR request on the power system side is secured in the power storage device.
The power control method and power control program according to the present invention have similar effects.

It is a block diagram which shows the structure of the unit consumer electric power system which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of the unit consumer electric power system of the aspect different from FIG. 1A. It is explanatory drawing which shows the mode that the electric power control apparatus by one Embodiment of this invention divides and manages the capacity of a storage battery. (Embodiment 1) It is a first flowchart which shows an example of the process which the electric power control apparatus by one Embodiment of this invention performs transmission and reception with the electric power system side in relation to a DR request. (Embodiment 1) 2 is a second flowchart showing an example of a process in which the power control device according to the embodiment of the present invention performs transmission / reception with the power system side in relation to a DR request. (Embodiment 1) FIG. 5 is a graph showing an example of a predicted power transmission / reception amount and an adjustable amount provided to the power system side by the power control device according to the embodiment of the present invention, and a target adjustment amount received from the power system side. (Embodiment 1) It is a graph which shows charge / discharge which concerns on the capacity for private supply and supply corresponding to FIG. (Embodiment 1) It is a graph which shows the charge / discharge which concerns on the adjustment capacity corresponding to FIG. (Embodiment 1) It is a graph which combined FIG. 5 and FIG. (Embodiment 1) In one embodiment of the present invention, it is the first explanatory diagram which shows the mode of accommodating electric power with another unit consumer electric power system. (Embodiment 7) In one embodiment of the present invention, it is the second explanatory diagram which shows the mode of accommodating electric power with another unit consumer electric power system. (Embodiment 7) In one embodiment of the present invention, it is a third explanatory diagram showing an aspect of accommodating electric power with another unit consumer electric power system. (Embodiment 7) In one embodiment of the present invention, it is explanatory drawing which shows the mode of exchanging information with the other unit consumer electric power system by exchanging electric power. (Embodiment 7) In one embodiment of the present invention, it is the first flowchart which shows the aspect which exchanges electric power with another unit consumer electric power system. (Embodiment 7) In one embodiment of the present invention, it is the second flowchart which shows the aspect which exchanges electric power with another unit consumer electric power system. (Embodiment 7) In one embodiment of the present invention, it is the third flowchart which shows the aspect which exchanges electric power with another unit consumer electric power system. (Embodiment 7)

Hereinafter, the present invention will be described in more detail with reference to the drawings. It should be noted that the following description is exemplary in all respects and should not be construed as limiting the invention.
(Embodiment 1)
≪Composition of unit consumer power system≫
First, a configuration example of the unit consumer power system according to this embodiment will be described.
FIG. 1 is a block diagram showing a configuration of a unit consumer power system according to an embodiment of the present invention. As shown in FIG. 1, the unit consumer power system 11 according to this embodiment includes a photovoltaic power generation device 13, a storage battery 15, home appliances 17-1 to 17-n, a power conditioner 19, and a control device 21. It is connected to the system 23. The power conditioner 19 is also called PCS, which is an acronym for Power Conditioning System.

In FIG. 1, the electric power generated by the photovoltaic power generation device 13 is P _PV , the electric power of the storage battery 15 is P _bat (positive at the time of discharge, negative at the time of charging), and the electric power consumed by the household appliances 17-1 to 17-n. It is set to P _L1 to P _Ln . Furthermore, the input / output power of the power conditioner is shown by P _PCS , and the power transmitted / received from the power system is shown by P _s .
The photovoltaic power generation device 13 includes a solar cell, and supplies DC power generated by the solar cell to the power conditioner 19. The DC / DC converter 19a of the power conditioner 19 converts the DC power supplied from the photovoltaic power generation device 13 into a predetermined voltage. The DC / DC converter 19a is a one-way operation from the photovoltaic power generation device 13, and blocks the flow of electric power in the opposite direction.

The storage battery 15 includes a secondary battery such as a lithium ion battery. The DC / DC converter 19b of the power conditioner 19 converts the DC voltage from the storage battery 15 into a predetermined voltage at the time of discharge, and outputs the DC voltage to the household appliances 17-1 to 17-n and the power system 23 via the bidirectional inverter 19c. do. At the time of charging, the voltage from the photovoltaic power generation device 13 and / or the power system 23 is converted into a DC voltage having an appropriate size for charging and provided to the storage battery 15 to charge the storage battery 15. The DC / DC converter 19b operates in both directions.

The bidirectional inverter 19c converts the DC voltage output from the photovoltaic power generation device 13 or the storage battery 15 via the DC / DC converter into a predetermined voltage and an AC voltage having a predetermined frequency. Further, the AC voltage from the power system 23 is converted into a DC voltage and provided to the storage battery 15 side.
An example of a predetermined voltage on the AC side of the bidirectional inverter 19c is approximately 100 V, and an example of a predetermined frequency is 50 Hz or 60 Hz, but the present invention is not limited to this. Anything that matches the voltage and frequency of the power system 23 may be used.
Instead of the bidirectional inverter 19c of FIG. 1A, a DC / AC inverter and an AC / DC converter may be used. FIG. 1B is a block diagram showing an embodiment in which a DC / AC inverter 19d and an AC / DC converter 19e are connected in antiparallel instead of the bidirectional inverter 19c of FIG. 1A.
Although the control device 21 and the power conditioner 19 are shown separately in FIG. 1, they may be integrated.

The control device 21 controls the DC / DC converter 19b to supply the electric power generated by the photovoltaic power generation device 13 to the storage battery 15 and the power system 23. Further, by controlling the DC / DC converter 19b, the direction of charging and discharging of the storage battery 15 and the amount of electric power thereof are controlled.
The control device 21 includes a CPU as a hardware resource, a memory, an input / output circuit, a communication interface circuit, and a timer circuit. In addition, it functionally includes a predicted value providing unit 21a, a communication unit 21b, and a charge / discharge control unit 21c.
The predicted value providing unit 21a calculates the predicted power transmission / reception amount and the adjustable amount, and the communication unit 21b transmits / receives information to / from the power system side. The charge / discharge control unit 21c controls the charge / discharge of the storage battery 15 by using the DC / DC converter 19b.

FIG. 2 is an explanatory diagram showing how the control device 21 shown in FIG. 1 divides and manages the capacity of the storage battery 15.
As shown in FIG. 2, a part of the total capacity of the storage battery 15 is managed as the capacity used for adjustment in response to the DR request (corresponding to the adjustment capacity, see the area indicated by the circled number 2 in FIG. 2), and separately. A part of the above is managed as the capacity used for private supply and demand (corresponding to the capacity for private supply and demand, see the circled number 3 in FIG. 2).

It should be noted that a part of the capacity of the storage battery 15 can be allocated to the adjustment capacity and the private supply / supply capacity. In addition, it is necessary to avoid over-discharging and secure a capacity for operating the control device 21 and the power conditioner 19 in the event of a power failure (see the area shown by the circled number 4 in FIG. 2). ).
Further, considering the life of the storage battery 15, the fully charged state is not preferable, and it is preferable to stop the charging when the fully charged state has a margin. It is necessary to allow for that margin (see the area indicated by the circled number 1 in FIG. 2).
The control device 21 manages the capacity of the storage battery 15 in consideration of these conditions, controls the operation of the DC / DC converter 19b, and charges and discharges the storage battery 15.

The capacities of the storage battery 15 shown in FIG. 2 (adjustment capacity, private supply / supply capacity and other capacities) are not physically distinguished, and the storage battery 15 receives and discharges power as an integral unit. However, the control device 21 separately calculates and manages those capacities. For example, the control device 21 secures a predetermined adjustment capacity even if there is no DR request, and does not allocate it for private supply and demand.

The adjusting capacity is a capacity that supports the adjustable amount. Here, the adjustable amount is the cumulative total of power transmitted / received (power transmitted / received) that can be adjusted on the target day (the day) in response to the DR request. The control device 21 controls the charging / discharging of the storage battery 15 so as to perform power transmission / reception with the power system 23 with the power transmission / reception power obtained by correcting the predicted power transmission / reception power with the target adjusting force every unit time. Then, it is assumed that the increase / decrease in the adjustment capacity has changed according to the plan of the change of the target adjustment ability on the day (the cumulative total of the day is the target adjustment amount).
On the day, the power consumption actually consumed by the household appliances 17-1 to 17-n and the power generated by the photovoltaic power generation device 13 are accompanied by an error from the predicted power consumption and the predicted power generation. However, as described above, the charge / discharge control unit 21c of the control device 21 controls the charge / discharge of the storage battery 15 so as to transmit / receive power to / from the power system 23 with the power transmission / reception amount corrected by the target adjustment force. .. The error between the predicted power consumption and the predicted generated power and the actual power is managed as an error from the charge / discharge plan related to the capacity for private supply and demand, and the balance of the power transmitted / received with the power system 23 is adjusted.
According to this embodiment, the charge / discharge control unit 21c secures a dedicated capacity (adjustment capacity) for responding to the DR request from the power system 23 in the storage battery 15, and when the DR request is received, the dedicated capacity (adjustment capacity) is secured in the storage battery 15. To be able to judge whether or not the DR request can be met, or to what extent the DR request can be met. On the other hand, the storage battery 15 is secured with a capacity that can be charged and discharged (capacity for private supply and demand) based on the power generated by the photovoltaic power generation device 13 and the power consumed by the home appliances 17-1 to 17-n. To be able to respond to both DR request and power supply and demand at the same time.
It should be noted that the user may increase or decrease the power consumption by operating the home electric appliance and reduce the power transmission / reception power to respond to the DR request. In that case, an error has occurred between the predicted power consumption and the actual result when viewed from the control device 21, but when viewed from the power system 23 side, the DR request is still met.

If the error from the predicted value is large, for example, if the power consumption is larger than the predicted value or the generated power is small, the remaining capacity of the private supply / supply capacity is exhausted and further discharge cannot be performed. In that case, the subsequent discharge related to the capacity for private supply and demand will not be performed, and the amount of power received from the power system will be increased. On the other hand, when the power consumption is smaller than expected or the power generation amount is large, the private supply / supply capacity is fully charged and further charging cannot be performed. In that case, the charge related to the capacity for private supply and demand will not be performed thereafter, and the amount of power received from the power system will be reduced or the power will be sold.

≪Processing related to DR request≫
Subsequently, the communication with the power system 23 performed by the control device 21 in connection with the DR request will be described.
Regarding the DR request, the procedure for exchanging is undecided at the stage before institutionalization, but for example, the following procedure can be considered.
However, as typical examples, some modifications other than those described below can be considered. Similarly, the method described below may be applied to these modified examples. As a modification, for example, an adjustment power to be targeted is transmitted every unit time, and whether or not the adjustment power corresponds to the adjustment power is returned as a response. Alternatively, the power system may transmit the adjusted power for each unit time to be targeted and return the available time zone, or return the available power for each unit time.
Typical examples are described below.
3A and 3B are flowcharts showing an example of the process in which the control device 21 performs transmission / reception with the power system side in relation to the DR request in this embodiment. The procedure will be explained with reference to the flowchart.
In this embodiment, the control device 21 repeatedly executes the processes shown in FIGS. 3A and 3B. For example, a timer circuit may be used to execute processing at predetermined time intervals, but the time intervals do not necessarily have to be constant.

As shown in FIG. 3A, first, the predicted value providing unit 21a of the control device 21 determines whether or not the time for calculating the predicted power transmission / reception power has arrived (step S11).
In this embodiment, information related to the DR request is exchanged on a daily basis, and the transition of the predicted power transmission / reception power on the day (the day) to be the target of the DR request at 14:00 on the previous day based on the day to be the target of the DR request. Is calculated.
When it is determined that the calculation time has arrived (Yes in step S11), the predicted value providing unit 21a of the control device 21 determines that the unit consumer power system 11 is supplied from the power system 23 the next day every unit time. The power transmission / reception power _Ps (for example, every 30 minutes) is calculated (step S13).

FIG. 4 shows a transition of the predicted power transmission / reception power provided by the control device 21 to the power system 23 (see the circled number 1 in FIG. 4) and a transition of the adjustable force described later (see the circled number 2 in FIG. 4). It is a graph which shows an example. Further, it is a graph showing an example of the transition of the target adjusting force (see the circled number 3 in FIG. 4) received from the power system side after the predicted transmission / reception power and the adjustable force are provided. As shown in FIG. 4, the predicted power transmission / reception power is calculated by dividing the current day into unit hours. The same applies to the adjustable power and the target power transmission / reception power.
When calculating the predicted power transmission / reception power, you may refer to the weather forecast related to the weather and temperature / humidity of the next day, similar weather, the results of the past few years of the temperature / humidity day, the power consumption of the power load of the past few days, etc. .. For the information, for example, the communication unit 21b may access the Internet or the like to acquire the information, or the past record may be stored as a history in the memory provided in the control device 21 and may be referred to. However, both may be combined. However, the calculation method is not limited to this.

In calculating the predicted power transmission / reception power, the predicted value providing unit 21a of the control device 21 first calculates the predicted power generation power which is the predicted value of the power generation power of the solar power generation device 13 for each unit time. In addition, the predicted power consumption ΣP _i [i = 1 to n], which is a predicted value of the power consumption of the home appliances 17-1 to 17-n for each unit time, is calculated. Then, the power transmission / reception power obtained by subtracting the predicted power generation power from the predicted power consumption is calculated. This corresponds to the predicted value of the power transmission / reception power when the storage battery 15 is not provided. Further, the predicted value providing unit 21a of the control device 21 calculates the predicted power transmission / reception power by subtracting the charge / discharge power corresponding to the private supply / supply capacity of the storage battery 15. It can be said that this is the power transmission / reception power in consideration of the charge / discharge power related to the self-supply / supply capacity of the storage battery 15.
The predicted power transmission / reception power calculated in this way is also called a baseline.

FIG. 5 is a graph showing charge / discharge related to the capacity for private supply and demand, corresponding to FIG. 4. The circled number 1 in FIG. 5 indicates the predicted power transmission / reception power as in FIG. The circled number 0 (zero) in FIG. 5 corresponds to the predicted value of the power transmission / reception power when the storage battery 15 is not provided.
That is, the predicted power generation power (see the graph of the circled number 1) considering the charge / discharge power related to the self-received capacity is subtracted from the predicted power transmission / reception power (see the graph of the circled number 0) when there is no storage battery. The shaded area in FIG. 5 corresponds to the charge / discharge amount related to the private supply / supply capacity of the storage battery 15. It can be said that the capacity for private supply and demand is the capacity required to realize the predicted power transmission / reception amount.
The predicted value providing unit 21a of the control device 21 transmits the calculated transition of the predicted power transmission / reception power on the day to the power system 23 (step S15), and then proceeds to step S17.
Further, when it is determined in step S11 that it is not the time to calculate the predicted power transmission / reception power (No in step S11), the execution of the process proceeds to step S17.

In step S17, the predicted value providing unit 21a of the control device 21 determines whether the time for calculating the adjustable force has arrived.
In this embodiment, the transition of the predicted power transmission / reception power is calculated at 15:00 on the previous day based on the day (the day) that is the target of the DR request. However, the present invention is not limited to this, and the adjustable power may be calculated at the same time as the calculation of the predicted power transmission / reception power, for example.
When it is determined that the calculation time has come (Yes in step S17), the predicted value providing unit 21a of the control device 21 can adjust based on the predicted power transmission / reception power when the DR request is received from the power system 23. The electric power (adjustable power) for each predicted unit time (for example, every 30 minutes) is calculated (step S19).

FIG. 6 is a graph showing charge / discharge related to the adjusting capacity, corresponding to FIG. 4. Similarly to FIG. 4, the circled number 1 in FIG. 6 indicates the predicted power transmission / reception power, and the circled number 3 indicates the adjustable force. The portion shown by the diagonal line in FIG. 6 is the adjustable amount, which corresponds to the charge / discharge amount related to the adjustment capacity of the storage battery 15. It can be said that the adjustment capacity is the capacity required to meet the DR request. The part obtained by subtracting the adjustable power (see the graph of circled number 3) from the predicted power transmission / reception power (see the graph of circled number 1) is assumed to correspond to the DR request using all of the adjustable power. It corresponds to the power transmitted / received from the power system.
The predicted value providing unit 21a of the control device 21 transmits the calculated transition of the adjustable force on the day to the power system 23 (step S21), and the execution of the process proceeds to step S23.
If it is determined in step S17 that it is not the time to calculate the predicted power transmission / reception power (No in step S17), the execution of the process proceeds to step S23.

In step S23, the communication unit 21b of the control device 21 checks whether or not the transition of the adjustment force (target adjustment force) to be targeted on the day has been received from the power system 23. The target adjusting force transmitted from the power system 23 is a response from the power system 23 to the adjustable force transmitted to the power system 23 in step S21, and is a specific target value of the DR request. That is, it is the power for each unit time that should be the target of adjustment based on the predicted power transmission / reception power.
The graph of the circled number 3 in FIG. 4 corresponds to the target adjustment force. In the example shown in FIG. 4, the target adjusting force is slightly smaller than the adjustable force. However, this is just one example. In some cases, the target adjustment force is equal to the adjustable force. However, the target adjustment power does not exceed the adjustable power. This is because even if a target adjustment ability that exceeds the ability is requested, it cannot be dealt with. On the other hand, the target adjustment power may be sero. This is the case when the power system has sufficient supply capacity.

Furthermore, the target adjustment power may be negative. It is assumed that it will be difficult to adjust the system voltage if power is generated by the power generation device but too much is transmitted to the power system 23. In such a case, the electric power system 23 side may be requested to suppress the transmission of the electric power generated by the photovoltaic power generation device 13 to the electric power system 23. If it is expected that the grid power side will make a negative DR request, both positive and negative values should be calculated for the calculation of the adjustable amount and provided to the power system side, but in this embodiment, it is negative. There is no DR request.
A person skilled in the art can easily infer the response to the negative DR request based on the response to the positive DR request described in this embodiment.

In this embodiment, the transition of the target adjustment power on the day is received at 16:00 on the previous day based on the day (the day) subject to the DR request. However, the present invention is not limited to this, and the predicted power transmission / reception power and the adjustable power may be received after transmission and before the start of the day.
When the transition of the target adjusting force on the day is received (Yes in step S23), the control device 21 stores the received transition of the target adjusting force in the memory (step S25). Then, the execution of the process proceeds to step S27 in FIG. 3B.
If it is determined in step S23 that the target adjusting force is not received (No in step S23), the execution of the process proceeds to step S27 in FIG. 3B.

In step S27 shown in FIG. 3B, the control device 21 determines whether or not the day (the day) is the target of the DR request. If it is determined that the day is the same, the charge / discharge control unit 21c of the control device 21 controls the charge / discharge of the storage battery 15 according to the transition of the target adjusting force.
At the same time, the power transmission / reception power is controlled so as to achieve the predicted power transmission / reception power for each unit time with respect to the actual power generation power of the photovoltaic power generation device 13 and the actual power consumption of the household appliances 17-1 to 17-n. conduct. Specifically, the charging / discharging of the storage battery 15 is controlled (step S29).

FIG. 7 is a graph in which FIGS. 5 and 6 are combined.
Of the two shaded parts in FIG. 7, the upper shaded part shows the amount managed as the charge / discharge amount related to the private supply / supply capacity, and the lower shaded part shows the amount managed as the charge / discharge amount related to the adjustment capacity. Shows the amount to be done. The area sandwiched between the upper and lower shaded areas is the target value of the amount of power transmitted / received provided by the unit consumer power system 11 from the power system 23, including the response to the DR request.
The control device 21 stores the actual results for each unit time in the memory during the day (the day) subject to the DR request. Then, the execution of the process proceeds to step S31.
If it is determined in step S27 that it is not the time to calculate the predicted power transmission / reception amount (No in step S27), the execution of the process proceeds to step S31.

Here, the target adjustment amount, which is the cumulative total of the target adjustment power on the current day, is the target value of how much the power transmission / reception amount should be further adjusted based on the predicted power transmission / reception amount, which is the cumulative total of the predicted power transmission / reception power on the current day. Therefore, when the predicted power transmission / reception amount is 100% and the target adjustment amount is 100%, the DR request is 100% responded to. If either the predicted power transmission / reception amount or the target adjustment amount reaches a certain percentage, it does not mean that the DR request is 100% met.
After the day that is the target of the DR request is over, the control device 21 sends the DR actual data stored in the memory to the power system 23.

In step S31, the communication unit 21b of the control device 21 determines whether or not it is time to transmit the actual result for the DR request.
In this embodiment, the DR record is transmitted at midnight the next day, that is, immediately after the end of the day.
When it is time to transmit the DR results (Yes in step S31), the communication unit 21b of the control device 21 transmits the data of the results of the day stored in the memory to the power system 23 (step S33). Then, the process is terminated.
Further, when it is determined in step S31 that it is not the time to transmit the actual result (No in step S33), the process is also terminated.

≪Specific example of response to DR request≫
A state of responding to the DR request of the control device 21 according to the present invention will be described by giving a specific numerical example.
First, an example of the calculated value of the predicted power transmission / reception power (baseline) will be described.
The predicted power transmission / reception in a certain unit time is calculated as the average of the actual results in the same unit time for the past 5 days.
For example, the average value of the actual results in that unit time is
Power generated by the photovoltaic power generation device 13 ( _PPV ): 2 (kW)
Total power consumption of home appliances 17-1 to 17-n (ΣP _i [i = 1 to n]): 3.5 (kW)
Discharge power (P _bat ) of the storage battery 15 related to the capacity for private supply and demand: 0.5 (kW)
And.

The power transmission / reception power PS _predicted for that unit time is
PS = ΣP _i [i = 1 to n] -P _PCS = ΣP _i [i = 1 to n]-( _{P PV} + P _bat ) = 1.0 (kW)
Is.
The predicted value providing unit 12a calculates the power transmission / reception power PS _predicted in each unit time from the start to the end of the day (the day) of the DR request target by the above procedure, and uses the total as the predicted power transmission / reception amount.

Further, the predicted value providing unit 12a determines the adjustable force by the following procedure.
(1) Of the unit times in which the predicted power transmission / reception power is not zero, the unit time in which the discharge power from the storage battery 15 is smaller than a predetermined threshold value is extracted.
(2) Of the extracted unit times, an appropriate value is determined as the adjustable force in order from the earliest unit time. The appropriate value may be, for example, a value preset by the user together with the size of the adjusting capacity, or may be a difference between a predetermined threshold value and the discharge power.
(3) In calculation, it is not possible to respond (adjustable power is zero) for the time zone after the remaining capacity of the adjustment capacity related to the adjustable power is exhausted.

(Embodiment 2)
In the first embodiment, the adjustable force is determined in order from the unit time of the earliest time among the unit times extracted in the adjustable force determination procedure (2), and the time zone in which the remaining capacity of the adjusting capacity is exhausted in calculation. Up to is an adjustable unit time.
On the other hand, in this embodiment, the adjustable force is determined in order from the unit time having the largest predicted power transmission / reception power among the unit times similarly extracted in the adjustable force determination procedure (2), and is used for calculation. The unit time that can be adjusted is the time zone when the remaining capacity of the capacity is exhausted.
By doing so, it is possible to respond to the DR request by giving priority to the time zone in which the power transmitted / received from the power system is large.

(Embodiment 3)
In the second embodiment, the control device 21 responds to the DR request by giving priority to the unit time in which the self-estimated (that is, one unit consumer power system) predicted power transmission / reception power is large.
On the other hand, this embodiment communicates with an external control device that controls another unit consumer power system.
The external control device for communication may be a control device that controls a unit consumer power system in a certain area in a wide range, or a control device that controls a unit consumer power system in a building with an apartment house in a narrow range. It may be. The mode is not limited as long as it can communicate with one or more external control devices.

The control device 21 receives the predicted power transmission / reception power calculated by another control device, and not only calculates its own predicted power transmission / reception power, but also includes a group including the predicted power transmission / reception power of another unit consumer power system. Calculate the predicted power transmission / reception power of.
Then, instead of the self-predicted power transmission / reception power in the second embodiment, the unit time in which the total value of the predicted power transmission / reception power is large is prioritized to respond to the DR request.
According to this aspect, it is possible to respond to a DR request by giving priority to a time zone in which the power transmitted / received from the power system is large, for example, as a group of a certain area or a certain building.

(Embodiment 4)
The electric power actually consumed by the household appliances 17-1 to 17-n and the generated electric power of the photovoltaic power generation device 13 are accompanied by an error from the predicted power consumption and the predicted generated electric power.
As described in the first embodiment, the charge / discharge control unit 21c manages the error between the predicted power consumption and the predicted generated power and the actual result as an error from the charge / discharge plan related to the capacity for private supply and demand, and manages the power system. Match the balance of power transmission and reception with 23.

As shown in FIGS. 5 and 7, the predicted power generation power (circled number) considering the charge / discharge power related to the self-received capacity from the predicted power transmission / reception power (see the graph of the circled number 0) when there is no storage battery. The portion indicated by the diagonal line minus the graph in 1) corresponds to the charge / discharge amount related to the self-supply / supply capacity of the storage battery 15.

In the first to third embodiments, the charge / discharge control unit 21c controls the charge / discharge of the storage battery 15 so as to respond to the DR request until the remaining capacity of the adjustment capacity is exhausted (becomes zero). That is, the threshold value of the adjustment capacity related to the determination of whether or not the DR request can be met is zero. On the other hand, in this embodiment, the threshold value of the adjusting capacity for determining whether or not the DR request can be met is determined in consideration of the remaining amount prediction error. As a matter of course, the larger the prediction error, the larger the threshold value.
Therefore, the control device 21 stores in the memory the error between the predicted power consumption and the predicted generated power and the actual result as a prediction error.

(Embodiment 5)
In the first embodiment, the private supply / supply capacity and the adjustment capacity have been described as preset fixed capacities. However, he said that the capacity for private supply and demand and the capacity for adjustment are not physically distinguished in the storage battery 15, but are only calculated and managed separately.
In this embodiment, an embodiment in which the self-supply / supply capacity and the adjustment capacity are changed each time the predicted power transmission / reception power and the adjustable power are calculated or as necessary will be described.

In this embodiment, the predicted value providing unit 12a of the control device 21 determines the predicted power consumption for each unit time based on the predicted weather conditions and the past results in order to calculate the predicted power transmission / reception power (baseline). Calculate the predicted power generation.

Then, the capacity of the storage battery 15 predicted to be required to match the calculated predicted power transmission / reception power is calculated as the capacity for private supply and demand. The calculated private supply / supply capacity is allocated to the storage battery 15, and the remaining available capacity is allocated to the adjustment capacity.
That is, instead of calculating the predicted power transmission / reception power based on the private power supply / reception capacity of a predetermined size, the predicted power transmission / reception power is calculated based on the required private power supply / reception capacity after securing the necessary power supply / reception capacity.

It also calculates the adjustable power based on the adjustment capacity allocated as the remaining available capacity.
Therefore, the appropriate capacity is determined by reflecting the weather conditions predicted when determining the required private supply and demand capacity, past results, and the mode set by the user.

(Embodiment 6)
In this embodiment, as in the fifth embodiment, the self-supply / supply capacity and the adjustment capacity are changed every time the predicted power transmission / reception power and the adjustable power are calculated, or as necessary.
However, unlike the fifth embodiment, the control device 21 further considers the prediction error described in the fourth embodiment and calculates the discharge power of the storage battery 15 related to the capacity for private supply and demand.
Therefore, not only the weather conditions predicted when determining the required private supply and demand capacity, past results, and the mode set by the user are reflected, but also the prediction error is reflected to determine the appropriate private supply and demand capacity. To.

(Embodiment 7)
In the third embodiment, the control device 21 communicates with an external control device that controls another unit consumer power system, and calculates the total value of the predicted power transmission / reception power as a group of, for example, a certain area or a certain building. The aspect corresponding to the DR request was described.
In this embodiment, a mode in which the control device 21 communicates with an external control device that controls another unit consumer power system to accommodate electric power will be described.

According to this embodiment, the unit consumer power system having a margin in the adjustment capacity related to the charge / discharge corresponding to the DR request is the power for the other unit consumer power system to respond to the DR request. Flexible as a quantity.
The storage battery 15 of the unit consumer power system 11 according to this embodiment basically has a sufficient capacity for the adjustment capacity corresponding to the DR request and the capacity required for the private supply and demand capacity used for the private supply and demand. It is assumed that there is.
However, among other unit consumer electric power systems, for example, there may be one that does not have a storage battery or one that does not have a storage battery or a power generation device. Alternatively, it is also possible that the storage battery of another unit consumer power system fails and cannot respond to the DR request.
Therefore, if there is spare capacity, the electric power may be transferred to such another unit consumer electric power system. By doing so, it is possible to respond more to the DR request from the power system 23 as a unit of the area or the building.

8A to 8C are explanatory views showing an embodiment in which the control device 21 interchanges electric power with a control device related to another unit consumer power system in this embodiment. Further, FIG. 9 is an explanatory diagram showing how the control device 21 exchanges information related to the interchanged electric power with the control device related to another unit consumer power system in this embodiment.
Further, FIGS. 10A to 10C are flowcharts showing a process in which the control device 21 interchanges power with another unit consumer power system control device in this embodiment.
In FIGS. 8A to 8C, households A to Z are unit consumer power systems connected to the same power system (not shown in FIGS. 8A to 8C). The home A includes a control device A. The control device A to the control device Z control the power transmission / reception between the system of the home A to the home Z and the power system, respectively.

The home B corresponds to the unit consumer power system 11 of FIG. 1, and the control device B corresponds to the control device 21 shown in FIG. However, the household A has a different configuration from the unit consumer power system 11 in FIG. Now, it is assumed that household A is equipped with a photovoltaic power generation device but not a storage battery. Therefore, even if a DR request is received from the power system, it is not possible to respond to the DR request in weather conditions and time zones where sufficient sunlight cannot be obtained. Since the household A does not have a storage battery, the control device A has a configuration different from that of the control device 21 shown in FIG. 1 in that it does not control the charging / discharging of the storage battery. However, the hardware resources are the same as those of the control device 21, and the point of exchanging with the power system related to the DR request is also the same as that of the control device 21.

In this embodiment, it is assumed that the home A receives the power interchange from the home B. The households C to Z may have a configuration different from that of the unit consumer power system 11 in FIG. 1 or may have the same configuration. The control device C to the control device Z may also have a configuration different from that of the control device 21 of FIG. 1 or may have the same configuration.

FIG. 10A is a flowchart showing the processing of the control device A on the side receiving the power interchange. The control device A repeatedly executes the process of FIG. 10A as in the processes shown in FIGS. 3A and 3B.
Similar to the processes of steps S11 to S15 of FIG. 3A, the control device A calculates the transition of the predicted power transmission / reception power when a predetermined time (assuming the same as that of the first embodiment and the time of the previous day is 14:00) arrives. And send it to the power system side.
Further, the remaining capacity of the adjustment capacity is sequentially calculated on the day subject to the DR request.

As a result of the calculation, it is judged that the remaining capacity of the adjustment capacity is zero, or the remaining capacity does not meet the standard (threshold value) in which the prediction error is expected when responding to the DR request in consideration of the prediction error. When the determination is made (step S41 in FIG. 10A), the control device A confirms whether the support signal has been transmitted to the control device related to the other unit consumer power system (step S43).
If the transmission has been completed (Yes in step S43), the execution of the process proceeds to step S49, but if the transmission has not been performed, the insufficient power is calculated (step S45). It is a value indicating how much power is to be accommodated. Then, along with the calculated insufficient power, information (support signal) indicating that support is required is transmitted to the external control device (step S47). Then, the execution of the process proceeds to step S49.

FIG. 8A shows that the control device A transmits a support signal to the external control devices B to Z.
In step S49, the control device A waits for the reception of the supportable signal from any of the external control devices (step S49). If the supportable signal is not received, the power is not interchanged (No in step S49), but if the supportable signal is received from an external control device (Yes in step S49), the supportable signal is transmitted from a plurality of control devices. Check if it has been received (step S51).
When a supportable signal is received from only one control device (No in step S51), a support request signal is transmitted to the control device (step S53).

FIG. 8B shows how the control device A receives the supportable signal from the control device B. FIG. 8C shows how the control device A transmits a support request signal to the control device B.
It should be noted that the supportable power is added as information to the supportable signal to be received. The supportable power is information indicating how much power can be supported for each unit time with respect to the insufficient power calculated in step S45 described above.
On the other hand, when the supportable signal is received from a plurality of control devices in the step S51 (Yes in step S51), the control device A compares the supportable power added to each of the received supportable signals and is larger. Determine who can get support. Then, the support request signal is transmitted only to the determined partner (step S55).

However, the present invention is not limited to this, and the support request signal may be configured to be transmitted to a plurality of parties. However, in that case, it is necessary to add information (designated support power) on how much power is supported for each unit time to the support request signal. This is to prevent the power interchanged from the plurality of partners from exceeding the insufficient power calculated in step S45 described above.
The control device of the other party receiving the support request signal accommodates the electric power that can be supported every unit time to the home A according to the supportable power (when requesting support from a plurality of other parties, the designated support power).

FIG. 10B is a flowchart showing the processing of the control device B that has received the support signal from the control device A.
The control device B executes the process of FIG. 10B in parallel with the process shown in FIGS. 3A and 3B. Further, the process is repeatedly executed as shown in FIGS. 3A and 3B.
The control device B checks whether or not a support signal has been received from the external control device (step S61). If the support signal is not received (No in step S61), the execution of the process proceeds to step S67, but if the support signal is received (Yes in step S61), the power for each unit time that can be supported (supportable power). Is calculated (step S63). Then, the calculated supportable force is transmitted to the other party (control device A in this embodiment) that has transmitted the support signal (step S65), and the execution of the process proceeds to step S67.

In step S67, the control device B checks whether or not the support request signal has been received from the other party that has transmitted the support signal (step S67). When the support request signal is not received (No in step S67), the process ends, but when the support request signal is received (Yes in step S67), it is based on the designated support force added to the received support request signal. Then, the interchangeable power is stored in the memory (step S69).

Further, the control device B on the side of accommodating the electric power repeatedly executes the process of FIG. 10C in parallel with the process shown in FIGS. 3A and 3B and the process shown in FIG. 10B. Then, during the period of power interchange, the actual value of the interchanged electric energy (value obtained by integrating the electric power) is stored in the memory, and after the period ends, the electric energy interchanged to the support destination control device A is used. Charge the corresponding fee.
Therefore, first, the control device B determines whether or not the time zone for accommodating the electric power has arrived (step S81).
If it is not in the time zone for accommodating power, the execution of the process proceeds to step S87 (No in step S81), but if it is in the time zone for accommodating power (Yes in step S81), the interchanged power (or the interchanged power). (Amount of electric power, which is the integrated value of) is monitored, and the accommodated electric power is stored in the memory every time a unit time elapses (step S83). Then, the electric energy obtained by integrating the interchanged electric power is calculated (step S85), and the process proceeds to step S87.

In step S87, the control device B determines whether or not the end of the period for accommodating electric power has come. If it is not the final stage, the process is terminated (No in step S87), but if the final stage is reached (Yes in step S87), it is confirmed whether or not the flexible electric energy has been billed (step S89).
If the request has already been made (Yes in step S89), the process is terminated, but if the request has not yet been made (No in step S89), the integrated value of the accommodated power is acquired by referring to the memory, and the electric energy related to the accommodation is obtained. The billing amount corresponding to the interchanged electric energy is calculated using the unit price of (step S91).
Then, the calculated billing amount is transmitted to the control device A of the accommodation destination (step S93).

FIG. 9 is an explanatory diagram showing how the control device B of the home B exchanges electric power with the control device A of the home A and exchanges information in this embodiment.
Home A and home B are connected to each other by a power line so that electric power can be interchanged. It may be connected by a dedicated power line, or may be connected via a power grid that receives power from the same grid power.
The control device A and the control device B are communicably connected to transmit and receive the support signal shown in FIG. 8A, the supportable signal shown in FIG. 8B, the support request signal shown in FIG. 8C, and the information related to the billing amount shown in FIG. ..
Further, the control device B can monitor the electric power (or the integrated value of the interchanged electric power) that the household B has accommodated in the household A (see step S83 in FIG. 10C).

With the configuration as described above, the electric power is transferred from the household B to the household A, the information of the billing amount corresponding to the interchanged electric power amount is transmitted and received, and the settlement is performed between the household A and the household B. Settlement may be settled as an incentive and penalty for Home A for a DR request from the power system. That is, the power system side pays for the incentive or penalty of the home A corresponding to the amount of the interchanged power to the power charge of the home B instead of the home A.

As mentioned above,
(I) The power control device according to the present invention is a device that manages a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control power transmitted / received from the power system. It should be adjusted with respect to the power transmission / reception power as requested by the power system side and the prediction value providing unit that calculates the predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device. The storage unit includes a communication unit that receives information related to the adjusted power and a charge / discharge control unit that controls charging / discharging of the power storage device. The predicted power transmission / reception power is calculated assuming that the private supply / supply capacity related to the difference between the predicted power generation power and the predicted power transmission / reception power and (2) the adjustment capacity related to the adjustment are individually provided, and the adjusted power transmission / reception power is calculated. The communication unit determines whether adjustment is possible or the power that can be adjusted based on the information related to the above, the communication unit transmits the determined result to the power system side, and the charge / discharge control unit charges the storage battery according to the determination. It is characterized by controlling the discharge.

In the present invention, the unit consumer electric power system is an electric power system owned by a consumer who individually concludes an electric power receiving contract with a service provider of the electric power system, and is a system connected to the electric power system. The specific embodiment is, for example, an electric power system of a home or a business operator.
In addition, the power generation device using renewable energy is a private power generation device represented by a solar power generation device, but it is not limited to the solar power generation device, but is a wind power generation device or a power generation device using other renewable energy. You may have it. The photovoltaic power generation device in the above-described embodiment corresponds to the power generation device using renewable energy of the present invention.

Furthermore, the power storage device is a device for storing electric energy represented by a storage battery. The type of storage battery does not matter. The storage battery in the above-described embodiment corresponds to a power storage device.
The power load broadly refers to a device that consumes power, and its type does not matter. The home electric appliance in the above-described embodiment corresponds to the power load of the present invention.
The power system is a power network provided by a service provider having power generation equipment, power transmission and distribution equipment, etc. to supply power to the area. The service provider not only supplies electric power to the unit consumer, but also purchases the electric power generated by the unit consumer. Therefore, not only the power transmission from the power system side to the unit consumer side but also the power transmission from the unit consumer side to the power system side is performed.

Further, the power transmission / reception power, the predicted power consumption, the predicted power generation power, and the predicted power transmission / reception power are all per unit time. Here, the unit time is a unit of time defined in a power supply / demand contract or the like for managing power transmission / reception power on the power system side and the consumer power system side. As a specific embodiment, it is common, but not limited to, 30 minutes as a unit.
Further, the request may be a request for power adjustment from the power system side to the unit consumer side, that is, a DR request with an incentive and / or a penalty based on the power supply / demand contract.
The power control device can be composed of, for example, a CPU as a center, a memory, an input / output circuit, a communication interface circuit, a timer circuit, and the like. In the above-described embodiment, the control device corresponds to the power control device of the present invention. Further, it may be a power control device including a power conditioner.

Further, a preferred embodiment of the present invention will be described.
(Ii) The predicted value providing unit can be adjusted for each unit time, which can be adjusted when a request is received from the power system side, assuming that the power storage device has the private supply / supply capacity and the adjusting capacity separately. The power is calculated, the communication unit provides the calculated predicted power transmission / reception power and the adjustable power to the power system side, and the unit related to the adjustment power based on the provided predicted power transmission / reception power and the adjustable power. Upon receiving the target adjustment force for each hour, the charge / discharge control unit determines the target charge / discharge power for each unit time in response to the request, and the charge / discharge amount according to the target charge / discharge power is the adjustment capacity. It may be managed as the charge / discharge power related to the power load, and the difference between the power consumption of the power load, the generated power of the power generation device, and the predicted power transmission / reception power for each unit time may be managed as the charge / discharge power related to the private supply / supply capacity. ..
Even if the private supply / supply capacity and the adjustment capacity of the power storage device are not physically separated, in this way, the charge / discharge control unit can adjust the charge / discharge amount and the remaining capacity related to the private supply / supply capacity. The charge / discharge amount and the remaining capacity related to the capacity can be managed individually.

The charge / discharge control unit may manage the charge / discharge power by a different method depending on the presence or absence of a DR request. For example, on days when there is no DR request, the charge / discharge power of the power storage device is determined based on the actual power consumption of the power load, the actual power generation power of the power generation device, and the predicted power transmission / reception power, and there is a DR request. The day may determine the charge / discharge power of the power storage device based on the predicted power consumption, the predicted power generation power, and the predicted power transmission / reception power. That is, on the day when there is a DR request, an error between the predicted transmission power and the actual power transmission / reception power may be calculated, and the error may be taken into consideration when responding to the DR request. In that case, the charge / discharge control unit manages the adjustment capacity including the predicted power consumption and the error between the predicted generated power and the actual result.

Furthermore, the adjustable power is a power value per unit time that reflects the amount that can be reduced or conversely increased from the standard based on the predicted power transmission / reception power.
The communication unit may receive the target power transmission / reception power instead of the target adjustment force. Here, the target power transmission / reception is the power transmission / reception power obtained by subtracting the target adjustment power from the predicted power transmission / reception power.
Further, the predicted value providing unit may calculate the predicted power transmission / reception power and the adjustable power at the same time and provide them to the power system side, but the present invention is not limited to this, and both may be calculated at different time points or at different time points. May be provided at.

(Iii) The private supply / supply capacity and the adjustment capacity may both have a predetermined size.
In this way, the predicted value providing unit can calculate the predicted power transmission / reception power and the adjustable power, respectively, based on the respective predetermined capacities.

(Iv) The charge / discharge control unit may control to charge / discharge from the adjustment capacity by giving priority to a time zone in which the power transmission / reception power is large.
By doing so, even with a limited adjustment capacity, it is possible to respond to a request for power reduction by giving priority to a time zone in which the power transmitted / received from the power system side is large.

(V) The unit consumer power system is connected to the power system side so as to be able to exchange power with at least one other unit consumer power system, and the communication unit controls another unit consumer power system. The charge / discharge control unit receives information from the external power control device, and the charge / discharge control unit receives the power sent / received from the power system side, which is the sum of the predicted power sent / received from the other unit consumer power system and its own predicted power sent / received. It may be controlled to give priority to a large time zone and perform discharge from the adjusting capacity.
In this way, including other unit consumer power systems, for example, as a group of buildings with apartments or areas, priority is given to power reduction during times when the power transmitted and received from the power system side is large. It will be possible to respond to requests.

(Vi) The predicted value providing unit further includes an error storage unit for storing an error history between the predicted power transmission / reception power calculated by the predicted value providing unit and the actual power transmission / reception power, and the predicted value providing unit can deal with the error. The adjustment capacity may be determined including the charge / discharge power.
By doing so, it becomes possible to more reliably determine the adjustment capacity in consideration of the past error between the predicted power transmission / reception power and the actual power transmission / reception power. This configuration relates to Embodiment 4.

(Vii) After receiving the request, the predicted value providing unit determines the charge / discharge power related to the self-supply / supply capacity, and then allocates the remaining capacity that can be used by the power storage device to the adjustment capacity. You may do it.
In this way, for example, when the predicted power consumption, the predicted power generation power, and the predicted power transmission / reception power are determined by reflecting the past results, the private supply / supply capacity according to the actual results is first determined, and the adjustment capacity is determined based on the determined capacity. Is determined, so the capacity for private supply and demand and the capacity for adjustment can be determined at a reasonable ratio based on the actual results.

(Viii) An error storage unit for storing an error history between the predicted power transmission / reception power calculated by the predicted value providing unit and the actual power transmission / reception power is further provided, and the predicted value providing unit can deal with the error. The charge / discharge power related to the private supply / supply capacity may be determined including the charge / discharge power.
In this way, for example, when determining the predicted power consumption, the predicted power generation power, and the predicted power transmission / reception power by reflecting the past results, the private supply / supply capacity and the adjustment capacity are determined at a reasonable ratio according to the results. Not only that, it is possible to determine the capacity for private supply and demand and the capacity for adjustment based on more accurate information that takes into account the error between the predicted value and the actual result.

(Ix) The unit consumer power system is connected to the power system side so as to be able to exchange power with at least one other unit consumer power system, and the communication unit controls another unit consumer power system. When there is another unit consumer power system that can not respond to the request and the charge / discharge control unit has a margin in the adjustment capacity, the charge / discharge control unit sends and receives information to and from the external power control device. The excess of the adjustment capacity may be accommodated.
In this way, by accommodating the extra adjustment capacity to other unit consumer power systems, it is possible to respond appropriately to requests from the power system side, for example, as a group of buildings with apartments or in a certain area. It will be possible.

Preferred embodiments of the present invention include a combination of any of the plurality of embodiments described above.
In addition to the embodiments described above, there may be various variations of the present invention. These variations should not be construed as not belonging to the scope of the present invention. The invention should include claims and equivalent meaning and all modifications within said scope.

11: Unit consumer power system, 13: Solar power generation device, 15: Storage battery, 17-1, 17-n: Home appliances, 19: Power conditioner, 19a, 19b: DC / DC converter, 19c: Bidirectional inverter, 19d: DC / AC inverter, 19e: AC / DC converter, 21: Control device, 21a: Predicted value providing unit, 21b: Communication unit, 21c: Charge / discharge control unit, 23: Power system

Claims (16)

It is a device that manages the unit consumer power system including the power load, the power generation device using renewable energy, and the power storage device, and controls the power transmitted and received from the power system.
A predictive value providing unit that calculates predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
A communication unit that receives information related to the adjusted power to be adjusted with respect to the transmitted / received power as a request from the power system side.
A charge / discharge control unit for controlling charge / discharge of the power storage device is provided.
In the predicted value providing unit, the power storage device
(1) Private supply / demand capacity related to the difference between the predicted power consumption, the predicted power generation power, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
The predicted power transmission / reception power is calculated assuming that the power is individually adjusted, and whether or not the power can be adjusted or the power that can be adjusted is determined based on the information related to the adjusted power.
The unit consumer power system is connected to the power system side so as to be able to exchange power with at least one other unit consumer power system.
The communication unit transmits the determined result to the power system side, and also transmits / receives information to and from an external power control device that controls another unit consumer power system.
The charge / discharge control unit controls the charge / discharge of the power storage device according to the determination, and from the power system side that totals the predicted power transmission / reception power of the other unit consumer power system and its own predicted power transmission / reception power. A power control device that controls to discharge from the adjustment capacity by giving priority to a time zone in which the power transmission / reception power is large. It is a device that manages the unit consumer power system including the power load, the power generation device using renewable energy, and the power storage device, and controls the power transmitted and received from the power system.
A predictive value providing unit that calculates predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
A communication unit that receives information related to the adjusted power to be adjusted with respect to the transmitted / received power as a request from the power system side.
A charge / discharge control unit that controls charge / discharge of the power storage device,
It is provided with an error storage unit that stores an error history between the predicted power transmission / reception power calculated by the predicted value providing unit and the actual power transmission / reception power.
In the predicted value providing unit, the power storage device
(1) Private supply / demand capacity related to the difference between the predicted power consumption, the predicted power generation power, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
The predicted power transmission / reception power is calculated, and the adjustment capacity is determined including the charge / discharge power that can cope with the error. Determine the possible power,
The communication unit transmits the determined result to the power system side, and the communication unit transmits the determined result to the power system side.
The charge / discharge control unit is a power control device that controls charge / discharge of the power storage device according to the determination . It is a device that manages the unit consumer power system including the power load, the power generation device using renewable energy, and the power storage device, and controls the power transmitted and received from the power system.
A predictive value providing unit that calculates predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
A communication unit that receives information related to the adjusted power to be adjusted with respect to the transmitted / received power as a request from the power system side.
A charge / discharge control unit that controls charge / discharge of the power storage device,
It is provided with an error storage unit that stores an error history between the predicted power transmission / reception power calculated by the predicted value providing unit and the actual power transmission / reception power.
In the predicted value providing unit, the power storage device
(1) Private supply / demand capacity related to the difference between the predicted power consumption, the predicted power generation power, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
The predicted power transmission / reception power is calculated, and after receiving the request, the charge / discharge power related to the self-supply / supply capacity is determined including the charge / discharge power that can cope with the error . After that, the remaining capacity that can be used by the power storage device is allocated to the adjustment capacity, and whether or not adjustment is possible or the adjustable power is determined based on the information related to the adjustment power.
The communication unit transmits the determined result to the power system side, and the communication unit transmits the determined result to the power system side.
The charge / discharge control unit is a power control device that controls charge / discharge of the power storage device according to the determination . It is a device that manages the unit consumer power system including the power load, the power generation device using renewable energy, and the power storage device, and controls the power transmitted and received from the power system.
A predictive value providing unit that calculates predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
A communication unit that receives information related to the adjusted power to be adjusted with respect to the transmitted / received power as a request from the power system side.
A charge / discharge control unit for controlling charge / discharge of the power storage device is provided.
In the predicted value providing unit, the power storage device
(1) Private supply / demand capacity related to the difference between the predicted power consumption, the predicted power generation power, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
The predicted power transmission / reception power is calculated assuming that the power is individually adjusted, and whether or not the power can be adjusted or the power that can be adjusted is determined based on the information related to the adjusted power.
The unit consumer power system is connected to the power system side so as to be able to exchange power with at least one other unit consumer power system.
The communication unit transmits the determined result to the power system side, and also transmits / receives information to and from an external power control device that controls another unit consumer power system.
The charge / discharge control unit controls the charge / discharge of the power storage device according to the determination, and when there is another unit consumer power system that has a margin for the adjustment capacity and cannot meet the request, etc. A power control device that accommodates the excess of the adjustment capacity to the unit consumer power system. The predicted value providing unit calculates the adjustable power for each unit time that can be adjusted when a request is received from the power system side, assuming that the power storage device has the private supply / supply capacity and the adjusting capacity separately. death,
The communication unit provides the calculated predicted power transmission / reception power and adjustable power to the power system side, and based on the provided predicted power transmission / reception power and adjustable power, the target adjustment for each unit time related to the adjusted power is performed. Receive power,
The charge / discharge control unit determines a target charge / discharge power for each unit time in response to the request, and manages the charge / discharge according to the target charge / discharge power as the charge / discharge related to the adjustment capacity.
The invention according to any one of claims 1 to 4, wherein the difference between the power consumption of the power load, the generated power of the power generation device, and the predicted power transmission / reception power for each unit time is managed as the charge / discharge power related to the private supply / supply capacity. Power control device. The power control device according to any one of claims 1 to 5, wherein the private supply / supply capacity and the adjustment capacity are both capacities having a predetermined size. After receiving the request, the predicted value providing unit determines the charge / discharge power related to the self-supply / supply capacity, and then allocates the remaining capacity that can be used by the power storage device to the adjustment capacity. 5. The power control device according to any one of 5. The power control device according to any one of claims 1 to 7, wherein the charge / discharge control unit gives priority to a time zone in which the predicted power transmission / reception power is large, and controls charging / discharging from the adjustment capacity. A method of managing a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control power transmitted / received from the power system, wherein the unit consumer power system is at least one other. The unit consumer power system is connected to the power system so that the power can be interchanged with the power system, and the computer is connected to the power system .
A step of providing a predicted value for calculating a predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
As a request from the power system side, a step of receiving information on the adjusted power to be adjusted with respect to the transmitted / received power, and
Steps to send and receive information to and from external power controllers that control other unit consumer power systems,
Based on the information related to the adjusted power, the adjustment determination step of determining whether adjustment is possible or at least one of the adjustable powers and transmitting it to the power system side, and
A step of controlling the charging / discharging of the power storage device according to the decision is provided.
In both the predicted value providing step and the adjustment determination step, the power storage device
(1) The private supply / supply capacity related to the difference between the power consumption of the power load, the power generated by the power generation device, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
Run as having individually ,
In the step of controlling the charging / discharging of the power storage device, priority is given to a time zone in which the power transmission / reception power from the power system side, which is the sum of the predicted power transmission / reception power of the other unit consumer power system and the own predicted power transmission / reception power, is large. A power control method for discharging from the adjusting capacity . A method of managing a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control power transmitted / received from the power system.
A step of providing a predicted value for calculating a predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
As a request from the power system side, a step of receiving information on the adjusted power to be adjusted with respect to the transmitted / received power, and
Based on the information related to the adjusted power, the adjustment determination step of determining whether adjustment is possible or at least one of the adjustable powers and transmitting it to the power system side, and
A step of controlling charging / discharging of the power storage device according to the decision,
It is provided with a step of storing a history of errors between the predicted power transmission / reception power calculated in the prediction value provision step and the actual power transmission / reception power.
In both the predicted value providing step and the adjustment determination step, the power storage device
(1) The private supply / supply capacity related to the difference between the power consumption of the power load, the power generated by the power generation device, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
A power control method for determining the adjustment capacity including the charge / discharge power that can cope with the error. A method of managing a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control power transmitted / received from the power system.
A step of providing a predicted value for calculating a predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
As a request from the power system side, a step of receiving information on the adjusted power to be adjusted with respect to the transmitted / received power, and
Based on the information related to the adjusted power, the adjustment determination step of determining whether adjustment is possible or at least one of the adjustable powers and transmitting it to the power system side, and
A step of controlling charging / discharging of the power storage device according to the decision,
It is provided with a step of storing a history of errors between the predicted power transmission / reception power calculated in the prediction value provision step and the actual power transmission / reception power.
In both the predicted value providing step and the adjustment determination step, the power storage device
(1) The private supply / supply capacity related to the difference between the power consumption of the power load, the power generated by the power generation device, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
The predicted power transmission / reception power is calculated, and after receiving the request, the charge / discharge power related to the self-supply / supply capacity is determined including the charge / discharge power that can cope with the error. After that, a power control method in which the remaining capacity that can be used by the power storage device is allocated to the adjustment capacity, and adjustment is possible or adjustment is made based on the information related to the adjustment power, or the adjustment power is determined. A method of managing a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control power transmitted / received from the power system, wherein the unit consumer power system is at least one other. The unit consumer power system is connected to the power system so that the power can be interchanged with the power system, and the computer is connected to the power system.
A step of providing a predicted value for calculating a predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
As a request from the power system side, a step of receiving information on the adjusted power to be adjusted with respect to the transmitted / received power, and
Steps to send and receive information to and from external power controllers that control other unit consumer power systems,
Based on the information related to the adjusted power, the adjustment determination step of determining whether adjustment is possible or at least one of the adjustable powers and transmitting it to the power system side, and
A step of controlling the charging / discharging of the power storage device according to the decision is provided.
In both the predicted value providing step and the adjustment determination step, the power storage device
(1) The private supply / supply capacity related to the difference between the power consumption of the power load, the power generated by the power generation device, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
If there is a margin in the adjustment capacity and there is another unit consumer power system that cannot meet the request, the power to accommodate the excess of the adjustment capacity to the other unit consumer power system. Control method. A program that manages a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control power transmitted / received from the power system, and the unit consumer power system is at least one other. The unit consumer power system is connected to the power system so that the power can be interchanged with the power system, and the processing to be executed by the computer is
Predicted value providing processing for calculating predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
As a request from the power system side, the process of receiving information related to the adjusted power to be adjusted with respect to the transmitted / received power, and
Processing to send and receive information with external power control devices that control other unit consumer power systems,
Based on the information related to the adjusted power, the adjustment determination process of determining whether adjustment is possible or at least of the adjustable power and transmitting it to the power system side,
It is provided with a process of controlling charging / discharging of the power storage device according to the decision.
In both the predicted value providing process and the adjustment determination process, the power storage device
(1) The private supply / supply capacity related to the difference between the power consumption of the power load, the power generated by the power generation device, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
To execute the process as if it has individually
In the process of controlling the charging / discharging of the power storage device, priority is given to a time zone in which the power transmission / reception power from the power system side, which is the sum of the predicted power transmission / reception power of the other unit consumer power system and the own predicted power transmission / reception power, is large. A power control program for discharging from the adjusting capacity . A program that manages a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control the power transmitted and received from the power system, and is a process to be executed by a computer.
Predicted value providing processing for calculating predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
As a request from the power system side, the process of receiving information related to the adjusted power to be adjusted with respect to the transmitted / received power, and
Based on the information related to the adjusted power, the adjustment determination process of determining whether adjustment is possible or at least of the adjustable power and transmitting it to the power system side,
The process of controlling the charging / discharging of the power storage device according to the decision, and
It is provided with a process of storing a history of errors between the predicted power transmission / reception power calculated in the predicted value provision process and the actual power transmission / reception power.
In both the predicted value providing process and the adjustment determination process, the power storage device
(1) The private supply / supply capacity related to the difference between the power consumption of the power load, the power generated by the power generation device, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
A power control program that determines the adjustment capacity including the charge / discharge power that can cope with the error. A program that manages a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control the power transmitted and received from the power system, and is a process to be executed by a computer.
Predicted value providing processing for calculating predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
As a request from the power system side, the process of receiving information related to the adjusted power to be adjusted with respect to the transmitted / received power, and
Based on the information related to the adjusted power, the adjustment determination process of determining whether adjustment is possible or at least of the adjustable power and transmitting it to the power system side,
The process of controlling the charging / discharging of the power storage device according to the decision, and
It is provided with a process of storing a history of errors between the predicted power transmission / reception power calculated in the predicted value provision process and the actual power transmission / reception power.
In both the predicted value providing process and the adjustment determination process, the power storage device
(1) The private supply / supply capacity related to the difference between the power consumption of the power load, the power generated by the power generation device, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
The predicted power transmission / reception power is calculated, and after receiving the request, the charge / discharge power related to the self-supply / supply capacity is determined including the charge / discharge power that can cope with the error. After that, a power control program that allocates the remaining capacity that can be used by the power storage device to the adjustment capacity and determines whether or not adjustment is possible or the adjustable power is possible based on the information related to the adjustment power. A program that manages a unit consumer power system including a power load, a power generation device using renewable energy, and a power storage device to control power transmitted / received from the power system, and the unit consumer power system is at least one other. The unit consumer power system is connected to the power system so that the power can be interchanged with the power system, and the processing to be executed by the computer is
Predicted value providing processing for calculating predicted power transmission / reception power based on the predicted power consumption of the power load, the predicted power generation power of the power generation device, and the capacity of the power storage device.
As a request from the power system side, the process of receiving information related to the adjusted power to be adjusted with respect to the transmitted / received power, and
Processing to send and receive information with external power control devices that control other unit consumer power systems,
Based on the information related to the adjusted power, the adjustment determination process of determining whether adjustment is possible or at least of the adjustable power and transmitting it to the power system side,
It is provided with a process of controlling charging / discharging of the power storage device according to the decision.
In both the predicted value providing process and the adjustment determination process, the power storage device
(1) The private supply / supply capacity related to the difference between the power consumption of the power load, the power generated by the power generation device, and the predicted power transmission / reception power.
(2) The adjustment capacity related to the adjustment and
If there is a margin in the adjustment capacity and there is another unit consumer power system that cannot meet the request, the power to accommodate the excess of the adjustment capacity to the other unit consumer power system. Control program.

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