Distributed energy resource control device, distributed energy resource control system, distributed energy resource control method, and program

Abstract

To provide a distributed energy resource control device capable of performing control suitable for a power distribution system that is returned to a radial system after a loop point is inserted.SOLUTION: A distributed energy resource control device includes: a controllable quantity aggregation unit that acquires controllable quantities of multiple distributed energy resources connected to a distribution system; and a control quantity allocation determination unit that uses the controllable quantities acquired by the controllable quantity aggregation unit to calculate control quantities of multiple distributed energy resources that satisfy predetermined conditions for the distribution system in a first state before a loop point is inserted in the distribution system, a second state after the loop point is inserted, and a third state in which the distribution system is a radial system after the loop point is inserted.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a distributed energy resource control device, a distributed energy resource control system, a distributed energy resource control method, and a program. [Background technology]

[0002] Conventionally, there have been distributed energy resource management systems that collect information such as the operating status of distributed energy resources (DERs) such as solar power generation systems and storage batteries connected to a power transmission and distribution system, and manage the DERs in an integrated manner. Patent Document 1 discloses a distributed energy resource management system that controls the DERs as needed to maintain the current and voltage of the power transmission and distribution system to which the DERs are connected within appropriate ranges.

[0003] Furthermore, Patent Document 2 discloses a loop support device that selects adjustment equipment suitable for loop restoration when a loop-off occurs in a transmission system that is normally a loop system. Unlike transmission systems, distribution systems are normally radial systems. However, even in distribution systems, loop points are sometimes inserted to temporarily create a loop system in order to isolate specific sections, such as construction zones. However, in the case of a distribution system, after the loop point is inserted, a switch is opened to isolate the specific section, creating a radial system. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-88177 [Patent Document 2] Japanese Patent Application Publication No. 2017-112742 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the loop support device described in Patent Document 2 is intended for loop recovery, and there is a problem in that it may not be applicable to the control of a power distribution system that is returned to a radial system after a loop point is connected.

[0006] The present disclosure has been made in consideration of the above circumstances, and provides a distributed energy resource control device, a distributed energy resource control system, a distributed energy resource control method, and a program that can perform control suitable for a distribution system that is returned to a radial system after a loop point is turned on. [Means for solving the problem]

[0007] This disclosure has been made to solve the above-mentioned problems, and one aspect of the present disclosure is a distributed energy resource control device that includes: a controllable quantity aggregation unit that acquires controllable quantities of multiple distributed energy resources connected to a distribution system; and a control quantity allocation determination unit that uses the controllable quantities acquired by the controllable quantity aggregation unit to calculate control quantities of the multiple distributed energy resources that satisfy predetermined conditions for the distribution system in a first state before a loop point is inserted in the distribution system, a second state after a loop point is inserted, and a third state in which the distribution system is a radial system after the loop point is inserted.

[0008] Another aspect of the present disclosure is the above-mentioned distributed energy resource control device, wherein the control amounts of the plurality of distributed energy resources are control amounts before the loop point is inserted, and the control amounts before the loop point is inserted are control amounts that cause the distribution system to satisfy the conditions in the first state, the second state, and the third state.

[0009] Another aspect of the present disclosure is the above-mentioned distributed energy resource control device, wherein the control quantities of the plurality of distributed energy resources include a control quantity before a loop point is inserted and a control quantity after the loop point is inserted, and the control quantity before the loop point is inserted is a control quantity that causes the distribution system to satisfy the condition in the first state and the second state, and the control quantity after the loop point is inserted is a control quantity that causes the distribution system to satisfy the condition in the second state and the third state.

[0010] Another aspect of the present disclosure is the above-mentioned distributed energy resource control device, wherein the control quantities of the plurality of distributed energy resources include any one of an active power output amount, a reactive power output amount, a power factor, a grid connection, a parallel-off, and a control target voltage value.

[0011] Another aspect of the present disclosure is the above-mentioned distributed energy resource control device, wherein the control quantity allocation determination unit calculates the control quantities of control devices in the power distribution system in addition to the control quantities of the multiple distributed energy resources.

[0012] Another aspect of the present disclosure is the above-mentioned distributed energy resource control device, in which the control amounts of the plurality of distributed energy resources calculated by the control amount allocation determination unit are notified to at least some of the plurality of distributed energy resources via an aggregator system that aggregates at least some of the plurality of distributed energy resources.

[0013] Another aspect of the present disclosure is the distributed energy resource control device described above, wherein the control quantity allocation determination unit calculates the control quantities of control devices or distributed energy resources in the power transmission system in addition to the control quantities of the plurality of distributed energy resources.

[0014] Another aspect of the present disclosure is a distributed energy resource control system including: a controllable quantity aggregation unit that acquires controllable quantities of a plurality of distributed energy resources connected to a power distribution system; a control quantity allocation determination unit that uses the controllable quantities acquired by the controllable quantity aggregation unit to calculate control quantities of the plurality of distributed energy resources and control quantities of control devices or distributed energy resources in a power transmission system that satisfy predetermined conditions for the power distribution system in a first state before a loop point is inserted in the power distribution system, a second state after the loop point is inserted, and a third state in which the power distribution system is a radial system after the loop point is inserted; and a power supply control unit that controls the control devices or distributed energy resources in the power transmission system based on the control quantities of the control devices in the power transmission system calculated by the control quantity allocation determination unit.

[0015] Another aspect of the present disclosure is a distributed energy resource control method including: a first step of acquiring controllable amounts of a plurality of distributed energy resources connected to a power distribution system; and a second step of using the controllable amounts acquired in the first step to calculate control amounts of the plurality of distributed energy resources that satisfy predetermined conditions for the power distribution system in a first state before a loop point is introduced in the power distribution system, a second state after the loop point is introduced, and a third state in which the power distribution system is a radial system after the loop point is introduced.

[0016] Another aspect of the present disclosure is a program for causing a computer to function as a controllable quantity aggregation unit that acquires controllable quantities of multiple distributed energy resources connected to a power distribution system, and a control quantity allocation determination unit that uses the controllable quantities acquired by the controllable quantity aggregation unit to calculate control quantities of the multiple distributed energy resources that satisfy predetermined conditions for the power distribution system in a first state before a loop point is introduced in the power distribution system, a second state after a loop point is introduced, and a third state in which the power distribution system is a radial system after the loop point is introduced. [Effects of the Invention]

[0017] According to this disclosure, the distributed energy resource control device, the distributed energy resource control system, the distributed energy resource control method, and the program can perform control suitable for a distribution system that is returned to a radial system after a loop point is connected. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic block diagram for explaining an overview of a distributed energy resources management system (DERMS) 10 according to an embodiment of the present disclosure. [Figure 2] 2 is a schematic block diagram showing the configuration of a distributed energy resource control device 10 in the embodiment. [Figure 3] 4 is a graph illustrating a controllable amount in the embodiment. [Figure 4] 2 is a schematic diagram showing a first display example of the display unit 16 in the embodiment. FIG. [Figure 5] 10 is a schematic diagram showing a second display example of the display unit 16 in the same embodiment. FIG. [Figure 6] 4 is a flowchart illustrating the operation of the distributed energy resource control device 10 in the embodiment. [Figure 7] FIG. 2 is a schematic block diagram illustrating an overview of a distributed energy resource control device 10a according to a first modified example of the embodiment. [Figure 8] FIG. 10 is a schematic block diagram illustrating an overview of a distributed energy resource control device 10b according to a second modification of the embodiment. [Figure 9] FIG. 2 is an explanatory diagram illustrating the hardware configuration of each device according to the embodiment and each modification example. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. FIG. 1 is a schematic block diagram illustrating an overview of a distributed energy resource control device 10 (DERMS, Distributed Energy Resources Management System) according to one embodiment of the present disclosure. The distributed energy resource control device 10 acquires controllable amounts of distributed power sources (DERs, Distributed Energy Resources) D1 and D2 connected to a power distribution system, such as renewable energy sources such as solar power generation, storage batteries, electric vehicles, and heat pumps, and controls the distributed power sources D1 and D2 by referring to the controllable amounts to insert a loop point and return the loop point to the radial grid (open the loop) after inserting the loop point. The distributed energy resource control device 10 may be realized by one or more computers reading and executing a program.

[0020] The distribution system includes distribution lines F1 and F2. Transformers T1 and T2 supply power to distribution lines F1 and F2, respectively. Overcurrent relays (OCR) S1 and S2 provide overcurrent protection for distribution lines F1 and F2, respectively. Automatic voltage regulators (SVR) V1 and V2 adjust the voltage of distribution lines F1 and F2, respectively. Switch S3 is a switch installed at the loop point that, when closed, forms a loop system (loop) from transformer T1 to transformer T2 via distribution line F1, switch S3, and distribution line F2. Switch S3 is normally open. Distributed power sources D1 and D2 are distributed energy resources such as solar power generation and storage batteries connected to distribution lines F1 and F2, respectively. FIG. 1 shows a distribution system including two distribution lines F1 and F2, two distributed power sources D1 and D2, and one switch S3 (loop point), but the numbers of distribution lines, distributed power sources, and switches are not limited to these.

[0021] 2 is a schematic block diagram showing the configuration of a distributed energy resource control device 10 according to this embodiment. The distributed energy resource control device 10 includes a controllable amount collection unit 11, a communication unit 12, a power flow calculation unit 13, a control amount allocation determination unit 14, a storage unit 15, and a display unit 16. The controllable amount collection unit 11 collects (acquires) the controllable amounts of the distributed power sources D1 and D2 from the distributed power sources D1 and D2 via the communication unit 12. The controllable amounts may include, for example, the controllable range of active power, the controllable range of reactive power, the controllable range of apparent power, or the controllable range of power factor, and may also include the presence or absence of constraints on each of these. The controllable amounts may be collected, for example, once a day or every 30 minutes.

[0022] The communication unit 12 mediates communication between each unit of the distributed energy resource control device 10 and the distributed power sources D1 and D2, and other systems that cooperate with the distributed energy resource control device 10.

[0023] The power flow calculation unit 13 reads the system information and load / power generation information stored in the memory unit 15 and performs power flow calculations for the distribution system. The power flow calculation unit 13 performs power flow calculations for a first state before the loop point (switch S3) of the distribution system is turned on, a second state after the loop point is turned on, and a third system in which the distribution system acts as a radiation information system after the loop point is turned on. These power flow calculations calculate the voltage, current, and phase at each point.

[0024] After the loop point is inserted, the distribution system becomes a radiation information system by opening the switch installed on the distribution line F1 between transformer T1 and switch S3, or the switch installed on the distribution line F2 between transformer T2 and switch S3. The load and power generation information may be predicted values ​​of the demand [kW] of each load, the supply [kW] of each power generation, and the reactive power consumption [kVar] at the scheduled time of the loop point insertion or the scheduled time of the loop opening. These predicted values ​​may have multiple patterns depending on the weather, etc., and power flow calculations may be performed for each pattern. The load and power generation information may also be acquired in real time at the time of the loop point insertion. The information may be acquired by collecting direct measurements such as measurements from sensor-equipped switches and smart meter readings, or by calculating the state of the load and power generation information from other measurements.

[0025] The control quantity allocation determiner 14 calculates control quantities for the distributed power sources D1 and D2 when the voltage, current, and phase at each point in the first to third states calculated by the power flow calculator 13 are not within predetermined conditions (optimum ranges). The control quantity allocation determiner 14 transmits control commands corresponding to the control quantities to the distributed power sources D1 and D2 via the communication unit 12. At this time, the control quantity allocation determiner 14 uses the controllable quantities acquired by the controllable quantity aggregation unit 11 to calculate control quantities for the distributed power sources D1 and D2 that will cause the voltage, current, and phase at each point in the power distribution system to satisfy predetermined conditions (optimum ranges, constraint conditions) in the first state, second state, and third state.

[0026] The control amounts of the distributed power sources D1 and D2 may be control amounts before the loop point is connected and may be control amounts that cause the distribution system to fall within the appropriate range in the first state, the second state, and the third state. The control amounts of the distributed power sources D1 and D2 may also include control amounts before the loop point is connected and control amounts after the loop point is connected. The control amounts before the loop point is connected are control amounts that cause the distribution system to fall within the appropriate range in the first state and the second state. The control amounts after the loop point is connected are control amounts that cause the distribution system to fall within the appropriate range in the second state and the third state.

[0027] The control variables of the distributed power sources D1 and D2 may be calculated using an optimal power flow calculation, an optimization method such as a metaheuristic method, a method of gradually changing the control variables to search for a solution that satisfies the constraints, or other methods. The control variables of the distributed power sources D1 and D2 may be active power output, reactive power output, power factor, grid connection or disconnection, or a control target voltage value for constant voltage control. For example, the control variable of the distributed power sources D1 may be a power factor, and the control variable of the distributed power sources D2 may be a control target voltage value, and the control types may be different for each of the distributed power sources D1 and D2.

[0028] In optimization methods, the total control cost may be used as an index to calculate the control amount so as to reduce the total control cost, or the variation in the control amount between the distributed power sources D1 and D2 may be used as an index to calculate the control amount so as to reduce the variation, but other indexes may also be used for calculation. When the total control cost is used as an index, the control unit cost or the predicted value of the control unit cost may be obtained from the system of an aggregator (a specified wholesale supplier).

[0029] In addition to the control amounts of the distributed power sources D1 and D2, the control amount allocation determination unit 14 may also determine the control amounts of control devices in the distribution system, such as load ratio control transformers (LRTs) and automatic voltage regulators, so that the distribution system satisfies the appropriate range. In addition, the control amount allocation determination unit 14 may include, as constraints when determining the control amounts of the distributed power sources D1 and D2, the amount of voltage change or the amount of voltage phase change between the first state and the second state or between the second state and the third state.

[0030] Furthermore, the control variable allocation determination unit 14 uses the system information and load / power generation information stored in the storage unit 15 when determining the control variables of the distributed power sources D1 and D2. The load / power generation information may be predicted values ​​of the demand amount [kW] of each load, the supply amount [kW] of each power generation, and reactive power consumption [kVar] at the scheduled time of loop point insertion or the scheduled time of loop opening. These predicted values ​​may have multiple patterns depending on the weather, etc., and the control variables may be calculated so that they fall within the appropriate range for each pattern.

[0031] The load and power generation information may be acquired in real time at the time of loop point activation. The control variable allocation determination unit 14 may acquire the load and power generation information in real time, and if the result of control using the load and power generation information does not satisfy a predetermined condition, the control variable may be recalculated and additional control may be performed. The predetermined condition may be that the voltage change amount and voltage phase change amount at the loop point are within a predetermined range. The load and power generation information may be acquired in real time by collecting direct measurement values ​​such as measurement values ​​from sensor-equipped switches and smart meter readings, or by calculating the information by state estimation from other measurement values.

[0032] The storage unit 15 stores system information, load and power generation information, control unit costs, installation locations of the distributed power sources D1 and D2, the controllable amounts of the distributed power sources D1 and D2 collected by the controllable amount collection unit 11, and calculation results of the power flow calculation unit 13 and the control amount allocation determination unit 14. The system information may include the topology of the power distribution system and line impedance. The storage unit 15 is configured from a non-volatile memory such as a hard disk drive, a magneto-optical disk drive, or a flash memory, a read-only storage medium such as a CR-ROM, a volatile memory such as a RAM (Random Access Memory), or a combination of these.

[0033] The display unit 16 has display means such as a liquid crystal display or an organic EL (Electro-Luminescence) display, and displays the control amount determined by the control amount allocation determination unit 14, the results of control based on the control amount, and the like.

[0034] FIG. 3 is a graph illustrating the controllable quantities in this embodiment. In the graph of FIG. 3, Q on the vertical axis represents reactive power, and P on the horizontal axis represents active power. The controllable range of active power is indicated by the upper and lower limits of active power defined by the active power constraint PC. The controllable range of reactive power is indicated by the upper and lower limits of reactive power defined by the reactive power constraint QC. The controllable range of apparent power is within the circle defined by the capacity constraint CC. The controllable range of power factor is indicated by the upper and lower limits of power factor (reactive power / active power) defined by the power factor constraint RC. When information indicating all of these controllable ranges is included in the controllable quantities, the two triangular areas hatched with horizontal lines in FIG. 3 become the controllable ranges.

[0035] 4 is a schematic diagram showing a first display example of the display unit 16 in this embodiment. In the first display example, for each of before the loop is connected (first state), after the loop is connected (second state), and the post-loop radiation state (third state), the control amount (DER control amount [kW / kVar]) determined by the control amount distribution determination unit 14, the control results (current [A] of the distribution line F1 / OCR malfunction, current [A] of the distribution line F1 / OCR malfunction, voltage margin [V] / presence or absence of voltage violation, loop point voltage phase difference [deg], SVR tap position [stage]), and the total control cost of the control in the first to third states are displayed in a table format.

[0036] 5 is a schematic diagram showing a second display example of the display unit 16 in this embodiment. In the second display example, the control variables (active power [kW], reactive power [kVar]) of the dispersed power sources D1 and D2 are displayed in a system diagram of the power distribution system.

[0037] FIG. 6 is a flowchart illustrating the operation of the distributed energy resource control device 10 in this embodiment. The controllable quantity tallying unit 11 tally the controllable quantities from each of the distributed power sources D1 and D2 (step Sa1). The power flow calculation unit 13 reads system information and load / power generation information from the storage unit 15, performs power flow calculations, and calculates the voltage, current, and phase of the system before, during, and after the loop (step Sa2). The control quantity allocation determination unit 14 determines the control allocation for at least each of the distributed power sources D1 and D2 so that the voltage and current of the system before, during, and after the loop are maintained appropriately (step Sa3). Note that step Sa3 may be executed if the voltage, current, and phase calculated in step Sa2 do not satisfy a predetermined condition.

[0038] In this way, the control amount allocation determination unit 14 calculates the control amounts of the distributed power sources D1 and D2 so that the distribution system satisfies predetermined conditions in three states (first to third states) before the loop point is inserted, after the loop point is inserted, and after the loop is opened. This allows the distributed energy resource control device 10 to perform control suitable for the distribution system that is returned to the radial system after the loop point is inserted.

[0039] <First Modification> In the above-described embodiment, the distributed energy resource control device 10 transmits control commands to the distributed power sources D1 and D2. In a first modification of the above-described embodiment, the distributed power sources D1 and D2 are aggregated by an aggregator (a specified wholesale supplier), and the aggregator's distributed power source control system transmits control commands to the distributed power sources D1 and D2.

[0040] Fig. 7 is a schematic block diagram illustrating an overview of a distributed energy resource control device 10a according to a first modification of the above-described embodiment. The distributed energy resource control device 10a has a configuration similar to that of the distributed energy resource control device 10 shown in Figs. 1 and 2, but differs in that it transmits a control request for control in accordance with the calculated control amounts of the distributed power sources D1 and D2 to an aggregator distributed power source control system 20 (aggregator system). The control system 20 transmits a control command to the distributed power sources D1 and D2 based on the received control request.

[0041] There may be more than one control system 20. Alternatively, the control system 20 may send control commands to some of the distributed power sources, and the distributed energy resource control device 10a may send control commands to the remaining distributed power sources. The control system 20 may be realized by one or more computers reading and executing a program.

[0042] This allows distributed power sources aggregated by an aggregator to be controlled in a manner suitable for the distribution system that returns to the radial system after the loop point is turned on.

[0043] <Second Modification> In the above-described embodiment and modifications, the distributed energy resource control devices 10 and 10a control the distributed power sources connected to the power distribution system. In a second modification, the distributed energy resource control device 10b calculates and controls the control amounts of the distributed power sources and control devices (transformers, phase modifying equipment, and switches) on the power transmission system.

[0044] FIG. 8 is a schematic block diagram illustrating an overview of a distributed energy resource control device 10b according to a second modification of the above-described embodiment. The distributed energy resource control device 10b has the same configuration as the distributed energy resource control device 10 in FIGS. 1 and 2, but also calculates control amounts for distributed power sources and control devices on the power transmission system. During this calculation, the distributed energy resource control device 10b may acquire system information for the power transmission system from an integrated database (DB) 40 that stores system information for the power transmission system and the power distribution system. Alternatively, the distributed energy resource control device 10b may transmit a control request for control in accordance with the control amounts of the control devices on the power transmission system to a monitoring and control system 30 (power supply control unit) for the power transmission system, and the monitoring and control system 30 may transmit a control command to the control device based on the control request. Note that the control command for the distributed power sources on the power transmission system may be transmitted by the distributed energy resource control device 10b or the monitoring and control system 30.

[0045] Furthermore, the distributed energy resource control device 10b and the monitoring control system 30 may constitute a distributed energy resource control system. Also in the second modified example, similar to the first modified example, the control system 20 may transmit control commands to at least some of the distributed power sources.

[0046] FIG. 9 is an explanatory diagram illustrating the hardware configuration of each device according to this embodiment and each modification. The devices are distributed energy resource control devices 10, 10a, and 10b, a control system 20, and a monitoring and control system 30. Each device includes an input / output module I, a storage module M, and a control module P. The input / output module I is implemented by including some or all of the communication module H11, connection module H12, pointing device H21, keyboard H22, display H23, button H3, microphone H41, speaker H42, camera H51, and sensor H52. The storage module M is implemented by including a drive H7. The storage module M may further be configured by including some or all of memory H8. The control module P is implemented by including memory H8 and a processor H9. These hardware components are communicatively connected to each other via a bus and are supplied with power from a power supply H6.

[0047] The connection module H12 is a digital input / output port such as a USB (Universal Serial Bus). The pointing device H21, keyboard H22, and display H23 may be touch panels. The sensor H52 may be an acceleration sensor, a gyro sensor, a GPS receiver module, a proximity sensor, or the like. The power supply H6 is a power supply unit that supplies the electricity necessary to operate each device. The power supply H6 may be a battery. The drive H7 is an auxiliary storage medium such as a hard disk drive or a solid-state drive. The drive H7 may be a non-volatile memory such as an EEPROM or a flash memory, or a magneto-optical disk drive or a flexible disk drive. The drive H7 is not limited to being built into each device, but may also be an external storage device connected to the connector of the connection module H12. The memory H8 is a main storage medium such as a random access memory. The memory H8 may be a cache memory. The memory H8 stores instructions when executed by one or more processors H9. The processor H9 is a CPU (Central Processing Unit). The processor H9 may be an MPU (microprocessing unit) or a GPU (graphics processing unit). The processor H9 reads programs and various data from the drive H7 via the memory H8 and performs calculations to execute instructions stored in one or more memories H8.

[0048] The input / output module I is used in the distributed energy resource control devices 10, 10a, and 10b, the control system 20, and the monitoring and control system 30. The control module P is used to implement each part of the distributed energy resource control devices 10, 10a, and 10b, the control system 20, and the monitoring and control system 30. In this specification and the like, the terms "distributed energy resource control devices 10, 10a, and 10b," "control system 20," and "monitoring and control system 30" may be replaced with the term "control module P."

[0049] The present disclosure may be embodied as follows. (1) One embodiment of the present disclosure is a distributed energy resource control device that includes: a controllable quantity aggregation unit that acquires controllable quantities of multiple distributed energy resources connected to a distribution system; and a control quantity allocation determination unit that uses the controllable quantities acquired by the controllable quantity aggregation unit to calculate control quantities of the multiple distributed energy resources that satisfy predetermined conditions for the distribution system in a first state before a loop point is introduced in the distribution system, a second state after a loop point is introduced, and a third state in which the distribution system is a radial system after the loop point is introduced.

[0050] (2) Another embodiment of the present disclosure is a distributed energy resource control device described in (1), wherein the control amounts of the plurality of distributed energy resources are control amounts before the loop point is inserted, and the control amounts before the loop point is inserted are control amounts that cause the distribution system to satisfy the conditions in the first state, the second state, and the third state.

[0051] (3) Another embodiment of the present disclosure is a distributed energy resource control device described in (1), wherein the control amounts of the plurality of distributed energy resources include a control amount before a loop point is inserted and a control amount after the loop point is inserted, and the control amount before the loop point is inserted is a control amount at which the distribution system satisfies the condition in the first state and the second state, and the control amount after the loop point is inserted is a control amount at which the distribution system satisfies the condition in the second state and the third state.

[0052] (4) Another embodiment of the present disclosure is a distributed energy resource control device according to any one of (1) to (3), wherein the control quantities of the plurality of distributed energy resources include any one of an active power output, a reactive power output, a power factor, a grid connection, a parallel-off, and a control target voltage value.

[0053] (5) Another embodiment of the present disclosure is a distributed energy resource control device described in any one of (1) to (4), wherein the control quantity allocation determination unit calculates the control quantities of control devices in the power distribution system in addition to the control quantities of the plurality of distributed energy resources.

[0054] (6) Another embodiment of the present disclosure is a distributed energy resource control device according to any one of (1) to (5), wherein the control amounts of the plurality of distributed energy resources calculated by the control amount allocation determination unit are notified to at least some of the plurality of distributed energy resources via an aggregator system that aggregates at least some of the plurality of distributed energy resources.

[0055] (7) Another embodiment of the present disclosure is a distributed energy resource control device according to any one of (1) to (6), wherein the control quantity allocation determination unit calculates the control quantities of the control devices or distributed energy resources in the power transmission system in addition to the control quantities of the plurality of distributed energy resources.

[0056] (8) Another embodiment of the present disclosure is a distributed energy resource control system including: a controllable quantity aggregation unit that acquires controllable quantities of a plurality of distributed energy resources connected to a power distribution system; a control quantity allocation determination unit that uses the controllable quantities acquired by the controllable quantity aggregation unit to calculate control quantities of the plurality of distributed energy resources and control quantities of control devices or distributed energy resources in a power transmission system that satisfy predetermined conditions for the power distribution system in a first state before a loop point is introduced in the power distribution system, a second state after the loop point is introduced, and a third state in which the power distribution system is a radial system after the loop point is introduced; and a power supply control unit that controls the control devices or distributed energy resources in the power transmission system based on the control quantities of the control devices in the power transmission system calculated by the control quantity allocation determination unit.

[0057] (9) Another embodiment of the present disclosure is a distributed energy resource control method including: a first step of acquiring controllable amounts of a plurality of distributed energy resources connected to a power distribution system; and a second step of using the controllable amounts acquired in the first step to calculate control amounts of the plurality of distributed energy resources that satisfy predetermined conditions for the power distribution system in a first state before a loop point is introduced in the power distribution system, a second state after the loop point is introduced, and a third state in which the power distribution system is a radial system after the loop point is introduced.

[0058] (9) Another embodiment of the present disclosure is a program for causing a computer to function as a controllable quantity aggregation unit that acquires controllable quantities of multiple distributed energy resources connected to a power distribution system, and a control quantity allocation determination unit that uses the controllable quantities acquired by the controllable quantity aggregation unit to calculate control quantities of the multiple distributed energy resources that satisfy predetermined conditions for the power distribution system in a first state before a loop point is introduced in the power distribution system, a second state after a loop point is introduced, and a third state in which the power distribution system is a radial system after the loop point is introduced.

[0059] 1, 2, 7, and 8, a program for realizing the functions of the distributed energy resource control devices 10, 10a, and 10b, the control system 20, and the monitoring and control system 30 may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed to realize the distributed energy resource control devices 10, 10a, and 10b, the control system 20, and the monitoring and control system 30. Note that the term "computer system" here includes hardware such as an OS and peripheral devices.

[0060] "Computer-readable recording media" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into computer systems. Furthermore, "computer-readable recording media" also includes devices that dynamically store programs for a short period of time, such as communication lines used when transmitting programs over networks like the Internet or over communication lines like telephone lines, and devices that store programs for a fixed period of time, such as volatile memory within computer systems that serve as servers or clients. The programs may also be programs that implement some of the aforementioned functions, or may be programs that can realize the aforementioned functions in combination with programs already stored in the computer system.

[0061] The embodiments of this disclosure have been described in detail above with reference to the drawings, but the specific configuration is not limited to this embodiment, and design changes and the like are also included within the scope that does not deviate from the gist of this disclosure. [Explanation of symbols]

[0062] 10, 10a, 10b Distributed energy resource control device 11 Controllable quantity calculation section 12 Communications Department 13 Tidal flow calculation section 14 Control amount allocation determination unit 15 Storage section 16 Display

Claims

1. a controllable amount aggregation unit that acquires controllable amounts of a plurality of distributed energy resources connected to a power distribution system; a control amount allocation determination unit that calculates control amounts of the plurality of distributed energy resources that satisfy a predetermined condition for the distribution system in a first state before a loop point is inserted in the distribution system, a second state after the loop point is inserted, and a third state in which the distribution system is configured as a radial system after the loop point is inserted, using the controllable amount acquired by the controllable amount aggregation unit; A distributed energy resource control device comprising:

2. the control amounts of the plurality of distributed energy resources are control amounts before the loop point is input; The control amount before the loop point is connected is a control amount by which the distribution system satisfies the condition in the first state, the second state, and the third state. The distributed energy resource control system of claim 1 .

3. the control amounts of the plurality of distributed energy resources include a control amount before a loop point is inserted and a control amount after the loop point is inserted; the control amount before the loop point is connected is a control amount by which the distribution system satisfies the condition in the first state and the second state; The control amount after the loop point is connected is a control amount that causes the distribution system to satisfy the condition in the second state and the third state. The distributed energy resource control system of claim 1 .

4. the control amounts of the plurality of distributed energy resources include any one of an active power output amount, a reactive power output amount, a power factor, a grid connection, a parallel-off, and a control target voltage value; The distributed energy resource control system of claim 1 .

5. the control amount distribution determination unit calculates control amounts of control devices in the power distribution system in addition to control amounts of the plurality of distributed energy resources. The distributed energy resource control system of claim 1 .

6. notifying the control amounts of the plurality of distributed energy resources calculated by the control amount distribution determination unit to at least some of the plurality of distributed energy resources via an aggregator system that aggregates the at least some of the plurality of distributed energy resources; The distributed energy resource control system of claim 1 .

7. the control amount distribution determination unit calculates a control amount of a control device or a distributed energy resource in a power transmission system in addition to the control amounts of the plurality of distributed energy resources; The distributed energy resource control system of claim 1 .

8. a controllable amount aggregation unit that acquires controllable amounts of a plurality of distributed energy resources connected to a power distribution system; a control amount allocation determination unit that calculates, using the controllable amounts acquired by the controllable amount aggregation unit, control amounts of the plurality of distributed energy resources and control devices or distributed energy resources in a power transmission system that satisfy a predetermined condition of the power distribution system in a first state before a loop point is inserted in the power distribution system, a second state after the loop point is inserted, and a third state in which the power distribution system is a radial system after the loop point is inserted; a power supply control unit that controls control devices or distributed energy resources in the power transmission system based on the control amounts of the control devices in the power transmission system calculated by the control amount allocation determination unit; A distributed energy resource control system comprising:

9. A first step of obtaining controllable amounts of a plurality of distributed energy resources connected to a power grid; a second step of calculating, by using the controllable amounts acquired in the first step, control amounts of the plurality of distributed energy resources that satisfy a predetermined condition of the distribution system in a first state before a loop point is inserted in the distribution system, a second state after the loop point is inserted, and a third state in which the distribution system is a radial system after the loop point is inserted; A distributed energy resource control method comprising:

10. Computer, a controllable amount aggregation unit that acquires controllable amounts of a plurality of distributed energy resources connected to a power distribution system; a control amount allocation determination unit that calculates control amounts of the plurality of distributed energy resources that satisfy a predetermined condition for the distribution system in a first state before a loop point is inserted in the distribution system, a second state after the loop point is inserted, and a third state in which the distribution system is configured as a radial system after the loop point is inserted, using the controllable amount acquired by the controllable amount aggregation unit. A program to function as a

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