Power cooperation management device, power cooperation management system, control method, and program

Abstract

To provide a power cooperation management device, a power cooperation management system, a control method, and a program to improve power supply stability without relying on human resources and reduce operating costs by cooperating among a plurality of facilities.SOLUTION: A power cooperation management device of the embodiment includes a control unit that calculates the amount of surplus / deficit of generated power relative to a predicted power demand based on the predicted power demand and the predicted power generation, notifies other power cooperation management systems of the amount of surplus / deficit of generated power via a communication network, controls so that the other power cooperation management system, which is notified of the amount of deficit of power, supplies power to a power transmission network of a power company within the range of the surplus, when the amount of surplus / deficit of power is notified from the power cooperation management device of the other power cooperation management system, if the amount of surplus / deficit of power calculated for the power cooperation management system to which the own power cooperation management system belongs is in a surplus state, and controls so that the other power cooperation management system, which is notified of the amount of surplus power, receives surplus power via the transmission network of the power company within the range of the surplus of the other power cooperation management system, when the amount of the surplus / deficit of power calculated for the power cooperation management system to which the own power cooperation management system belongs is in a deficit state.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] Embodiments of the present invention relate to a power cooperation management device, a power cooperation management system, a control method, and a program.

Background Art

[0002] In recent years, in Japan as well, efforts to achieve carbon neutrality led by the country and the government have been accelerating in various fields. Even in the private sector, efforts to incorporate carbon neutrality are being considered and implemented, and the introduction of solar power generation facilities that utilize idle spaces within private facilities, such as the rooftops and roofs of warehouses, and the parking lots of commercial facilities, is being promoted.

[0003] In the private sector, systems that combine solar power generation facilities and battery storage facilities (solar power generation systems) are also being considered. Generally, the roles of the battery in the combination of solar panels and batteries are mainly two: peak cutting and surplus power storage. When used for peak cutting and peak shifting, it is necessary to charge the battery before the time period when power consumption increases.

[0004] On the other hand, when storing surplus power from solar power generation, the battery needs to be discharged before the time period when solar power generation reaches its peak. As a conventional technique for determining the charging and discharging operation (operation schedule) of battery storage facilities, a method has been proposed in which the demand for the same time period in the future is predicted from past demand power sheets, and the operation schedule of the solar power generation system is determined.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in the prior art, it was necessary to formulate an operation schedule by human resources, or to review it by human resources each time according to the actual load fluctuation results, and the operation was not easy. In addition, since the load fluctuation of the facility generally varies depending on seasons such as winter, intermediate season, and summer, it was necessary to switch the pattern of the operation schedule according to the season. Therefore, even if a solar power generation and battery system is introduced, in order to perform optimal operation, it is necessary to review the operation schedule of the system according to the actual load fluctuation after the start of operation, adjust the operation schedules of each facility, and operate while coordinating. However, there was a problem that it was difficult to implement it by human resource management in reality.

[0007] The present invention has been made in view of the above, and provides a power cooperation management device, a power cooperation management system, a control method, and a program that can stably supply power in cooperation with a plurality of facilities and reduce operation costs without relying on human resources.

Means for Solving the Problems

[0008] The power cooperation management device according to the embodiment is a power cooperation management device that is connected via a communication network and an electric power company transmission network to another power cooperation management system including the power cooperation management device and power generation equipment, and performs power cooperation management in the power cooperation management system including the power generation equipment. The power cooperation management device includes a demand power prediction unit that predicts the demand power of the power cooperation management system to which it belongs, a generated power prediction unit that predicts the generated power of the power generation equipment included in the power cooperation management system to which it belongs, calculates the surplus / deficit power amount of the generated power with respect to the predicted demand power based on the predicted demand power and the predicted generated power, and notifies the other power cooperation management system via the communication network. When a surplus / deficit power amount is notified from the power cooperation management device of another power cooperation management system, if the surplus / deficit power amount calculated for the power cooperation management system to which it belongs is in a surplus state, it controls the other power cooperation management system notified of the deficit power amount to supply to the power company transmission network within the range of the surplus. If the surplus / deficit power amount calculated for the power cooperation management system to which it belongs is in a deficit state, it controls to receive supply via the power company transmission network within the range of the surplus of the other power cooperation management system that notified the surplus power amount, and a control unit.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0010] FIG. 1 is a schematic configuration block diagram of the power cooperation management system according to the embodiment. The power cooperation management system 10 is configured to include a plurality of office power management systems 11A to 11C and an information communication network 12. The office power management systems 11A to 11C are each connected to the power company transmission network 13 to construct a grid connection system.

[0011] The office power management system 11A includes a power conversion and distribution facility 21, a solar power generation facility 22, a battery facility 23, a power conditioner 24, a gas cogeneration system (CGS) 25, a load facility 26, and an energy management system (EMS) 27.

[0012] The power conversion and distribution facility 21 converts the high-voltage power supplied via the power company transmission network 13 into power having a voltage used within the office where the office power management system 11A is installed, and converts the power supplied by the office power management system 11A to the power company transmission network 13 side into the high-voltage power used in the power company transmission network 13. The solar power generation facility 22 has solar panels, performs photovoltaic conversion of sunlight, generates electricity, and supplies it to the power conditioner 24.

[0013] The battery facility 23 stores the power supplied via the power company transmission network 13 supplied via the power conditioner 24, the power supplied from the solar power generation facility 22, or the power supplied from the gas cogeneration system 25, and supplies it to the power company transmission network 13 via the power conditioner 24 or to each part of the office where the office power management system 11A is installed via the power conversion and distribution facility 21.

[0014] The power conditioner 24 adjusts the quality (voltage and frequency) of the power supplied via the power company transmission network 13, the power supplied from the solar power generation facility 22, or the power supplied from the gas cogeneration system 25 according to the supply target, and supplies it to the supply target via the power conversion and distribution facility 21.

[0015] The gas cogeneration system 25 uses gas as fuel to generate electricity, supplies it via the power conditioner 24, and functions as a heat source that uses the generated heat for cooling, heating, or hot water supply, or supplies it as steam.

[0016] The load facility 26 includes systems such as a heating and cooling system, a lighting system, a manufacturing and processing system including a manufacturing device or a processing device, etc., and operates using the power supplied via the power receiving and transforming facility 21.

[0017] The energy management system (EMS) 27 controls the entire office power management system 11A and performs power management based on information from the power receiving and transforming facility 21, the power conditioner 24, the gas cogeneration system 25, and the load facility 26, as well as information from the outside via the information communication network 12.

[0018] The office power management system 11B includes a power receiving and transforming facility 31, a solar power generation facility 32, a power conditioner 33, a load facility 34, and an energy management system (EMS) 35.

[0019] The power receiving and transforming facility 31 converts the high-voltage power supplied via the power company transmission network 13 into power having a voltage used within the office where the office power management system 11B is installed, and converts the power supplied by the office power management system 11B to the power company transmission network 13 side into the high-voltage power used in the power company transmission network 13. The solar power generation facility 32 has solar panels, performs photovoltaic conversion of sunlight, generates electricity, and supplies it to the power conditioner 33.

[0020] The power conditioner 33 adjusts the quality (voltage and frequency) of the power supplied via the power company transmission network 13 or the power supplied from the solar power generation facility 32 according to the supply target, and supplies it to the supply target via the power receiving and transforming facility 31.

[0021] The load equipment 34 includes, for example, a system such as a heating, ventilation, and air conditioning (HVAC) system, a lighting system, a manufacturing system, or a manufacturing / processing system including a manufacturing or processing apparatus, and operates using the power supplied via the power receiving and transforming equipment 21.

[0022] The energy management system (EMS) 34 controls the entire office power management system 11B and performs power management based on information from the power receiving and transforming equipment 31, the power conditioner 33, the load equipment 34, and external information via the information communication network 12.

[0023] The office power management system 11C includes the power receiving and transforming equipment 41, the battery equipment 42, the power conditioner 43, the gas cogeneration system 44, the load equipment 45, and the energy management system (EMS) 465.

[0024] The power receiving and transforming equipment 41 converts the high-voltage power supplied via the power company transmission network 13 into power having a voltage used within the office where the office power management system 11C is installed, and also converts the power supplied by the office power management system 11C to the power company transmission network 13 side into the high-voltage power used in the power company transmission network 13.

[0025] The battery equipment 42 stores the power supplied via the power company transmission network 13 supplied via the power conditioner 43 or the power supplied from the gas cogeneration system 44, and supplies it to each part of the office where the power company transmission network 13 or the office power management system 11C is installed via the power conditioner 43 and the power receiving and transforming equipment 41.

[0026] The power conditioner 43 adjusts the quality (voltage and frequency) of the power supplied via the power company transmission network 13 or the power supplied from the gas cogeneration system 44 according to the supply target, and supplies it to the supply target via the power receiving and transforming equipment 41.

[0027] The gas cogeneration system 44 uses gas as fuel to generate electricity, supplies it via the power conditioner 43, and functions as a heat source that performs cooling, heating, or hot water supply with the generated heat, or supplies it as steam.

[0028] The load facility 45 includes, for example, systems such as a heating and cooling system, a lighting system, a manufacturing device, or a manufacturing / processing system including a processing device, and operates using the power supplied via the power receiving and transforming facility 41.

[0029] The energy management system (EMS) 46 controls the entire office power management system 11C and performs power management based on information from the power receiving and transforming facility 41, the power conditioner 43, the gas cogeneration system 44, and the load facility 45, as well as information from the outside via the information communication network 12.

[0030] Figure 2 is a detailed configuration block diagram of the main part of the office power management system. In Figure 2, for ease of understanding, only the office power management system 11A and the office power management system 11B among the office power management systems 11A to 11C are shown. In Figure 2, the same parts as in Figure 1 are denoted by the same reference numerals, and the detailed description thereof is incorporated herein by reference.

[0031] First, the office power management system 11A will be described. In the office power management system 11A, the battery facility 23 includes a communication unit 23A, a control output unit 23B, an arithmetic unit 23C, and a measurement unit 23D. Also, the EMS 27 includes a communication unit 27A, a control output unit 27B, an arithmetic unit 27C, and a measurement unit 27D.

[0032] First, the battery facility 23 of the office power management system 11A will be described. The communication unit 23A of the battery facility 23 communicates with the power conditioner 24. The control output unit 23B controls the output of the battery facility 23 based on the calculation result of the calculation unit 23C. The calculation unit 23C performs various calculations for controlling the input and output of the battery based on the measurement result of the measurement unit 23D, and outputs the calculation result to the control output unit 23B. The measurement unit 23D measures the charge and discharge current and temperature of the battery, etc., and outputs the measurement result to the calculation unit 23C.

[0033] Next, the EMS 27 of the office power management system 11A will be described. The communication unit 27A communicates with the outside via the information communication network 12, and also communicates with the power receiving and transforming facility 21, the battery facility 23, the power conditioner 24, the gas cogeneration system 25, and the load facility 26. The control output unit 27B controls the entire office power management system 11A based on various information obtained within the office power management system 11A and external information obtained from other office power management systems, etc., obtained via the information communication network 12. The calculation unit 27C performs power management and coordinated power management with other office power management systems 11B and 11C that are the targets of power management and coordination in the office power management system 11A. The measurement unit 27D measures the state of the power receiving and transforming facility 21.

[0034] Next, the office power management system 11B will be described. In the office power management system 11B, the EMS 35 includes a communication unit 35A, a control output unit 35B, a calculation unit 35C, and a measurement unit 35D.

[0035] The communication unit 35A communicates with the outside via the information communication network 12, and also communicates with the power receiving and transforming facility 31, the power conditioner 33, and the load facility 34. The control output unit 35B controls the entire office power management system 11B based on various information obtained within the office power management system 11B and external information obtained from other office power management systems, etc., obtained via the information communication network 12.

[0036] The calculation unit 35C performs power management and coordinated power management with other office power management systems 11A and 11C that are the targets of power management and coordination in the office power management system 11B. The measurement unit 35D measures the state of the substation equipment 21.

[0037] Next, the operation of the office power management system will be described. FIG. 3 is an operation flowchart of the office power management system. First, the independent operation of the office power management system will be described with reference to FIG. 3. Here, the office power management system 11A will be described as an example.

[0038] The EMS 27 of the office power management system 11A functions as a demand power prediction unit, and inputs (acquires) the predicted demand power data for daytime and nighttime of its own facility on the next day, which is the calculation result of an external EMS (not shown), via the communication unit 27A and the information communication network 12 (step S11). Subsequently, the EMS 27 functions as a generated power prediction unit, acquires solar radiation amount prediction data from the server of the Japan Meteorological Agency via the communication unit 27A and the information communication network 12, and performs a prediction of the generated power by the solar power generation facility 22 (step S12).

[0039] Next, the EMS 27 determines whether there already exists an operation pattern corresponding to the predicted demand power data and the predicted solar power generation (step S13). In the determination of step S13, if there is no operation pattern corresponding to the predicted demand power data and the predicted solar power generation (step S13; No), the EMS 27 determines whether the generated power amount corresponding to the predicted solar power generation exceeds the demand power amount corresponding to the predicted demand power data (step S14).

[0040] In the determination of step S14, if the generated power amount corresponding to the predicted solar power generation exceeds the required power amount corresponding to the predicted demand power (step S14; Yes), the EMS 27 determines whether the battery constituting the battery facility 23 is in a fully charged state (step S15).

[0041] In the determination of step S15, if the battery constituting the battery facility 23 is in a fully charged state (step S15; Yes), the EMS 27 performs no battery control (step S16), stores the demand prediction for the day, the predicted generated power by the solar power generation facility 22, and the battery operation history as a new operation pattern in the operation pattern information database (DB) (step S17), and ends the process.

[0042] In the determination of step S15, if the battery constituting the battery facility 23 is not in a fully charged state but is in a chargeable state (step S15; No), the EMS 27 charges the surplus of the generated power of the solar power generation facility 22 (= generated power - predicted demand power) to the battery constituting the battery facility 23 (step S18), and transfers the process to step S15 again. As a result, the surplus of the generated power of the solar power generation facility 22 is charged until the battery constituting the battery facility 23 is in a fully charged state.

[0043] Also, in the determination of step S14, if the generated power amount corresponding to the predicted solar power generation is less than or equal to the required power amount corresponding to the predicted demand power (step S14; No), when the difference in power amount between the generated power amount corresponding to the predicted solar power generation and the required power amount corresponding to the predicted demand power is set as α kW, the EMS 27 determines whether the contract power amount exceeds the difference in power amount α kW (step S19).

[0044] In the determination of step S19, if the contracted power consumption exceeds the differential power α kW (step S19; Yes), the EMS 27 shall perform without battery control (step S16), store the demand prediction for the day, the predicted power generation by the solar power generation facility 22, and the battery operation history as a new operation pattern in the operation pattern information database (DB) (step S17), and end the process.

[0045] In the determination of step S19, if the contracted power consumption is less than or equal to the differential power α kW (step S19; No), the EMS 27 shall discharge the battery that constitutes the battery facility 23 so as not to exceed the contracted power consumption, supply power (step S20), and transfer the process back to step S14.

[0046] In the determination of step S13, if there is an operation pattern corresponding to the demand power prediction data and the predicted solar power generation (step S13; Yes), read the operation pattern from the operation pattern information database, perform charge and discharge of the battery that constitutes the battery facility 23 according to the operation pattern, store the demand prediction for the day, the predicted power generation by the solar power generation facility 22, and the battery operation history as a new operation pattern in the operation pattern information database (DB) (step S17), and end the process.

[0047] Here, a more specific operation will be described. A case will be described where the demand power amount corresponding to the demand power prediction data is 700 kW × 8 hours and the power generation amount corresponding to the predicted solar power generation is 500 kW × 8 hours. In this case, if the remaining amount of the battery that constitutes the power storage facility is 400 kWh for the EMS, the charging power of the battery that constitutes the power storage facility is 200 kW × 8 hours of the solar power generation, and the control output unit of the EMS outputs 300 kW to the load facility of the power management system of the business office, the purchased power can be reduced and peak shifting can be realized.

[0048] Figure 4 is an operation flowchart of the power management system of the business office on the power receiving side. Figure 5 is an operation flowchart of two office power management systems on the side that provides power supply.

[0049] Next, the cooperative operation of the office power management system will be described with reference to FIGS. 4 and 5. Here, a case where the office power management system 11A receives power supply from the office power management system 11B and the office power management system 11C will be described as an example. That is, FIG. 4 is an operation flowchart of the office power management system 11A, FIG. 5(A) is an operation flowchart of the office power management system 11B, and FIG. 5(B) is an operation flowchart of the office power management system 11C.

[0050] As shown in FIG. 4, the EMS 27 of the office power management system 11A inputs (acquires) the predicted demand power data for daytime and nighttime of its own facility on the next day, which is the calculation result of an external EMS (not shown), via the communication unit 27A and the information communication network 12 (step S31). Subsequently, the EMS 27 functions as a power generation prediction unit, acquires the predicted solar radiation amount data from the server of the Japan Meteorological Agency via the communication unit 27A and the information communication network 12, and predicts the power generation by the solar power generation facility 22 (step S32).

[0051] Next, the EMS 27 determines whether there already exists an operation pattern corresponding to the predicted demand power data and the predicted solar power generation (step S33). In the determination of step S33, if there is no operation pattern corresponding to the predicted demand power data and the predicted solar power generation (step S33; No), the EMS 27 determines whether the amount of power generation corresponding to the predicted solar power generation exceeds the amount of demand power corresponding to the predicted demand power data (step S34).

[0052] In the determination of step S34, if the generated power amount corresponding to the solar power generation power prediction exceeds the required power amount corresponding to the required power prediction data (step S34; Yes), the EMS 27 receives notifications of the available power amounts from the other office power management systems 11B and 11C that are performing power cooperation management (step S35).

[0053] Here, with reference to FIG. 5, the notification of the available power amount from the other office power management systems 11B and 11C that are performing power cooperation management will be described in detail.

[0054] As shown in FIG. 5(A), the EMS 35 of the other office power management system 11B inputs (acquires) the predicted required power data for the next day for its own facility during the day and at night, which is the calculation result of an external EMS (not shown), via the communication unit 35A and the information communication network 12 (step S51).

[0055] Subsequently, the EMS 35 acquires the predicted solar radiation amount data from the server of the Japan Meteorological Agency via the communication unit 35A and the information communication network 12, and performs a power generation prediction by the solar power generation facility 32 (step S52). Next, the EMS 35 determines whether the generated power amount corresponding to the solar power generation power prediction exceeds the required power amount corresponding to the required power prediction data (step S53).

[0056] In the determination of step S53, if the generated power amount corresponding to the solar power generation power prediction exceeds the required power amount corresponding to the required power prediction data (step S53; Yes), the EMS 35 ends the process.

[0057] In the determination of step S53, when the generated power amount corresponding to the solar power generation power prediction is less than or equal to the power demand amount corresponding to the power demand prediction data (step S53; No), the EMS 35 determines whether the contract power amount exceeds the difference power amount β kW, where the difference power amount is the difference between the generated power amount corresponding to the solar power generation power prediction and the power demand amount corresponding to the power demand prediction data (step S54).

[0058] In the determination of step S54, when the contract power amount exceeds the difference power amount β kW (step S54; Yes), the EMS 35 terminates the cooperation process.

[0059] In the determination of step S54, when the contract power amount is less than or equal to the difference power amount β kW (step S54; No), the EMS 35 functions as a surplus / deficit power notification unit and notifies the other office power management systems 11A and 11C that are performing power cooperation management that there is a power supply shortage of β kW (step S55). Then, the EMS 35 performs power control for cooperation with the other office power management systems 11A and 11C that are performing power cooperation management (step S56), and after the cooperation ends, the process terminates.

[0060] As shown in FIG. 5(B), the EMS 46 of the other office power management system 11C inputs (acquires) the predicted power demand data for the daytime and nighttime of its own facility the next day, which is the calculation result of an external EMS (not shown) via the information communication network 12 (step S61). Next, the EMS 46 determines whether the remaining amount (remaining power amount) of the storage battery constituting the energy storage device 42 exceeds the power demand amount corresponding to the power demand prediction data (step S62). In the determination of step S62, if the remaining amount (remaining power amount) of the storage battery constituting the energy storage facility 42 exceeds the required power amount corresponding to the predicted demand power data (step S62; Yes), the EMS 46 functions as a surplus / deficit power notification unit and notifies the other office power management systems 11A and 11B that are performing power cooperation management that it is possible to supply γ kW of power (step S64). It functions as a control unit and performs battery control for cooperation with the other office power management systems 11A and 11B that are performing power cooperation management (step S63). After the cooperation ends, the process ends. Specifically, in cooperation with the office power management system 11A, power supply is performed to cover the power shortage of the office power management system 11B. In the determination of step S62, if the remaining amount (remaining power amount) of the storage battery constituting the energy storage facility 42 is less than or equal to the required power amount corresponding to the predicted demand power data (step S62; No), the office power management system 11C cooperates with the other office power management systems 11A and 11B and performs battery control for cooperation with the other office power management systems 11A and 11B that are performing power cooperation management to receive power supply from the other office power management systems 11A and 11B (step S63). After the cooperation ends, the process ends.

[0061] Subsequently, the EMS 27 determines whether the remaining amount of the storage battery constituting the energy storage facility 23 exceeds the predicted night demand (step S36).

[0062] In the determination of step S36, when the remaining amount of the storage battery constituting the energy storage facility 23 is equal to or less than the predicted nighttime demand (step S36; No), the EMS 27 charges the storage battery constituting the energy storage facility 23 with the surplus power of the photovoltaic power generation facility 22 (= generated power - predicted demand power) (step S39), and transfers the process back to step S35. As a result, the surplus power of the photovoltaic power generation facility 22 is charged until the remaining amount of the storage battery constituting the energy storage facility 23 exceeds the predicted nighttime demand.

[0063] Also, in the determination of step S36, when the remaining amount of the storage battery constituting the energy storage facility 23 exceeds the amount of power demand corresponding to the power demand prediction data (step S36; Yes), the EMS 27 performs battery control for the cooperation of the other office power management system 11B and the office power management system 11C that perform power cooperation management to supply power to the other office power management system 11B in cooperation with the other office power management system 11C (step S37). After the cooperation is completed, the predicted demand for the day, the predicted generated power by the photovoltaic power generation facility 22, and the battery operation history are stored in the operation pattern information database (DB) as a new operation pattern (step S38), and the process ends.

[0064] In the determination of step S34, when the amount of generated power corresponding to the predicted photovoltaic power generation is equal to or less than the amount of power demand corresponding to the power demand prediction data (step S34; No), the EMS 27 determines whether the contract power amount exceeds the difference power amount α kW when the difference power amount between the remaining amount of the storage battery constituting the energy storage facility 23 and the amount of power demand corresponding to the power demand prediction data is α kW (step S40).

[0065] In the determination of step S40, if the contracted power consumption exceeds the differential power α kW (step S40; Yes), the EMS 27 causes the power management system 11A of the establishment to perform power cooperation management in cooperation with the power management system 11C of another establishment to supply power to the power management system 11B of another establishment, and performs battery control for the cooperation of the power management system 11B of another establishment and the power management system 11C of the establishment (step S37). After the cooperation ends, the demand prediction for the day, the predicted power generation by the solar power generation facility 22, and the battery operation history are stored in the operation pattern information database (DB) as a new operation pattern (step S38), and the process ends.

[0066] In the determination of step S40, if the contracted power consumption is less than or equal to the differential power α kW (step S40; No), the EMS 27 discharges the battery that constitutes the battery facility 23 so as not to exceed the contracted power consumption, supplies power (step S41), and the process returns to step S34 again.

[0067] In the determination of step S33, if there is an operation pattern corresponding to the demand power prediction data and the predicted solar power generation (step S33; Yes), the operation pattern is read from the operation pattern information database, and the charge and discharge of the battery that constitutes the battery facility 23 are performed according to the operation pattern (step S42). The demand prediction for the day, the predicted power generation by the solar power generation facility 22, and the battery operation history are stored in the operation pattern information database (DB) as a new operation pattern (step S38), and the process ends.

[0068] Here, a more specific operation will be described. It is assumed that the demand power amount corresponding to the demand power prediction data is 700 kW × 8 hours, the power generation amount corresponding to the predicted solar power generation is 500 kW × 8 hours, the predicted night-time demand power is 1200 kWh, and the demand prediction during the day of the power management system of another establishment is expected to exceed the normal level by more than 200 kWh. This case will be described.

[0069] In this case, when the remaining amount of the storage battery constituting the power storage facility is 1600 kWh, since the remaining amount of the storage battery is less than the predicted night-time demand power, charging of the storage battery is unnecessary.

[0070] Therefore, by discharging 200 kW, which is half of 400 kWh (= 1600 - 1200 kWh), which is the difference between the predicted night-time demand power and the remaining amount of the storage battery, from the storage battery, the power purchase amount in other power cooperation management systems can be reduced, and it becomes possible to supplement the power purchase amount of other power cooperation management systems.

[0071] As described above, according to the embodiment, in a power cooperation management system including an EMS (Power Cooperation Management Device) and a workplace power management system as another power cooperation management system including a solar power generation facility or a gas cogeneration system (power generation facility), which is connected via an information communication network (communication network) and a power company transmission network, the power cooperation management device that performs power cooperation management, the EMS (Demand Power Prediction Unit, Generated Power Prediction Unit, Surplus / Deficit Power Notification Unit) predicts the demand power of the power cooperation management system to which it belongs, predicts the generated power of the power generation facility included in the power cooperation management system to which it belongs, calculates the surplus / deficit power amount of the generated power with respect to the predicted demand power based on the predicted demand power and the predicted generated power, and notifies other power cooperation management systems via the information communication network. Further, when a surplus / deficit power amount is notified from the power cooperation management device of another power cooperation management system, the EMS (Control Unit) controls to supply to the power company transmission network within the range of the surplus when the surplus / deficit power amount calculated for the power cooperation management system to which it belongs is in a surplus state, and controls to receive supply via the power company transmission network within the range of the surplus of the other power cooperation management system that notified the surplus power amount when the surplus / deficit power amount calculated for the power cooperation management system to which it belongs is in a deficit state. Therefore, by the cooperation of a plurality of power cooperation management systems, peak shifting can be performed to achieve stable power supply, and the power purchase power of the entire plurality of power cooperation management systems can be reduced to reduce the operation cost.

[0072] In the above description, the case of three workplace power management systems 11A to 11C as the power cooperation management system has been described. However, the same applies to the case where two power cooperation management systems cooperate or the case where four or more power cooperation management systems cooperate.

[0073] That is, among a plurality of power cooperation management systems, one or more power cooperation management systems having surplus power can supply power in cooperation with one or more power cooperation management systems with insufficient power.

[0074] The power cooperation management device of this embodiment includes a control device such as an MPU, a storage device such as a ROM (Read Only Memory) and a RAM, an external storage device such as a USB memory, an SSD, and an HDD, a display device such as a display device, and various switches and various input devices such as input interfaces. It has a hardware configuration using a normal computer.

[0075] The program executed by the power cooperation management device of this embodiment is provided by being recorded in a file in an installable format or an executable format on a semiconductor memory device such as a USB memory or an SSD, or a computer-readable recording medium such as a DVD (Digital Versatile Disk).

[0076] Alternatively, the program executed by the power cooperation management device of this embodiment may be stored on a computer connected to a network such as the Internet and downloaded via the network. Further, the program executed by the power cooperation management device of this embodiment may be configured to be provided or distributed via a network such as the Internet. Alternatively, the program of the power cooperation management device of this embodiment may be configured to be provided by being pre-installed in a ROM or the like.

[0077] The program executed by the power cooperation management device of this embodiment has a module configuration including the above-described respective parts (required power prediction part, generated power prediction part, surplus / deficiency power notification part, and control part). As actual hardware, the CPU (processor) reads the program from the above storage medium and executes it, so that the above respective parts are loaded onto the main storage device, and the required power prediction part, generated power prediction part, surplus / deficiency power notification part, and control part are generated on the main storage device.

[0078] Although some embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

Explanation of Reference Numerals

[0079] 10 Power cooperation management system 11A Office power management system 11B Office power management system 11C Office power management system 12 Information communication network 13 Power company transmission network 21 Substation and conversion equipment 22 Solar power generation equipment 23 Battery equipment 23A Communication unit 23B Control output unit 23C Arithmetic unit 23D Measurement unit 24 Power conditioner 25 Gas cogeneration system 26 Load equipment 27 EMS 27A Communication unit 31 Substation and conversion equipment 32 Solar power generation equipment 33 Power conditioner 34 Load equipment 35 EMS 35A Communication unit 35B Control output unit 35C Arithmetic unit 35D Measurement unit 41 Substation and conversion equipment 42 Battery equipment 43 Power conditioner 44 Gas cogeneration system 45 Load equipment 46 EMS

Claims

1. A power cooperation management device that is connected via a communication network and an electric power company transmission network to another power cooperation management system equipped with a power generation facility, and that performs power cooperation management in a power cooperation management system equipped with a power generation facility, comprising: a demand power prediction unit that predicts the demand power of the power cooperation management system to which it belongs; a generated power prediction unit that predicts the generated power of the power generation facility included in the power cooperation management system to which it belongs; an excess / deficiency power notification unit that calculates the excess / deficiency power amount of the generated power with respect to the predicted demand power based on the predicted demand power and the predicted generated power, and notifies the other power cooperation management system via the communication network; a control unit that, when an excess / deficiency power amount is notified from the power cooperation management device of another power cooperation management system, if the excess / deficiency power amount calculated for the power cooperation management system to which it belongs is in an excess state, controls to supply to the electric power company transmission network within the range of the excess amount to the other power cooperation management system that has been notified of a deficiency power amount, and if the excess / deficiency power amount calculated for the power cooperation management system to which it belongs is in a deficiency state, controls to receive supply via the electric power company transmission network within the range of the excess amount of the other power cooperation management system that has been notified of an excess power amount; A power cooperation management device comprising the above.

2. The power cooperation management system has a power storage facility that stores the generated power of the power generation facility, and when the excess / deficiency power amount is in an excess state, the control unit causes the power storage facility to be charged. The power cooperation management device according to Claim 1.

3. When the excess / deficiency power amount is in a deficiency state and the deficiency power amount exceeds the contract power amount with the available electric power company transmission network, the control unit causes the power storage facility to discharge. The power cooperation management device according to Claim 2.

4. The power cooperation management system includes a power storage facility that stores the generated power of the power generation facility, and a driving pattern information database that stores in advance, as a driving pattern, the prediction results of demand power, the prediction results of generated power, and the operation history of the power storage facility in association with each other on a daily basis. When there is an operation pattern similar to the predicted demand power result of the demand power prediction unit and the predicted power generation power result of the power generation equipment of the power generation power prediction unit in the operation pattern information database, the control unit causes the power storage equipment to perform charge and discharge along the operation pattern. The power cooperation management device according to claim 1.

5. The power generation equipment is a renewable energy power generation device or a cogeneration system. The power cooperation management device according to claim 1.

6. A power cooperation management system connected via a communication network and a power company transmission network to another power cooperation management system including a power cooperation management device and power generation equipment, Power generation equipment, A demand power prediction unit that predicts the demand power of the power cooperation management system, a power generation power prediction unit that predicts the power generation power of the power generation equipment included in the power cooperation management system to which it belongs, and based on the predicted demand power and the predicted power generation power, calculates the surplus / deficit power amount of the power generation power with respect to the predicted demand power, and notifies the other power cooperation management system via the communication network; a surplus / deficit power notification unit; and when a surplus / deficit power amount is notified from the power cooperation management device of another power cooperation management system, if the surplus / deficit power amount calculated for the power cooperation management system to which it belongs is in a surplus state, it controls to supply to the power company transmission network within the range of the surplus amount to the other power cooperation management system that has been notified of the deficit power amount, and if the surplus / deficit power amount calculated for the power cooperation management system to which it belongs is in a deficit state, it controls to receive supply via the power company transmission network within the range of the surplus amount of the other power cooperation management system that has been notified of the surplus power amount. A control unit, and a power cooperation management device having the same. A power cooperation management system including the same.

7. A control method of a power cooperation management device executed by a power cooperation management device that is connected via a communication network and a power company transmission network to another power cooperation management system including a power cooperation management device and power generation equipment, and performs power cooperation management in a power cooperation management system including power generation equipment, A step of predicting the demand power of the power cooperation management system to which it belongs, A step of predicting the power generation power of the power generation equipment included in the power cooperation management system to which it belongs, Based on the predicted required power and the predicted generated power, calculating the surplus / deficit power amount of the generated power with respect to the predicted required power, and notifying the other power cooperation management system via the communication network; When a surplus / deficit power amount is notified from the power cooperation management device of another power cooperation management system, if the surplus / deficit power amount calculated for the power cooperation management system to which itself belongs is in a surplus state, then for the other power cooperation management system notified of the deficit power amount, controlling to supply within the range of the surplus amount to the power company transmission network, and if the surplus / deficit power amount calculated for the power cooperation management system to which itself belongs is in a deficit state, controlling to receive supply via the power company transmission network within the range of the surplus amount of the other power cooperation management system that notified the surplus power amount; A control method for a power cooperation management device comprising the above.

8. A program for controlling a power cooperation management device executed by a computer in a power cooperation management system having a power cooperation management device and being connected via a communication network and a power company transmission network to another power cooperation management system having a power generation facility, The computer is caused to function as a required power prediction unit that predicts the required power of the power cooperation management system to which itself belongs; function as a generated power prediction unit that predicts the generated power of the power generation facility provided in the power cooperation management system to which itself belongs; function as a surplus / deficit power notification unit that calculates the surplus / deficit power amount of the generated power with respect to the predicted required power based on the predicted required power and the predicted generated power, and notifies the other power cooperation management system via the communication network; function as a control unit that, when a surplus / deficit power amount is notified from the power cooperation management device of another power cooperation management system, if the surplus / deficit power amount calculated for the power cooperation management system to which itself belongs is in a surplus state, controls to supply within the range of the surplus amount to the power company transmission network for the other power cooperation management system notified of the deficit power amount, and if the surplus / deficit power amount calculated for the power cooperation management system to which itself belongs is in a deficit state, controls to receive supply via the power company transmission network within the range of the surplus amount of the other power cooperation management system that notified the surplus power amount; A program for causing the above to function.

Images