WO2013030937A1

WO2013030937A1 - Regional electric power control system and regional electric power control method

Info

Publication number: WO2013030937A1
Application number: PCT/JP2011/069493
Authority: WO
Inventors: 剛人太田; 浩仁矢野; 広考高橋
Original assignee: 株式会社日立製作所
Priority date: 2011-08-29
Filing date: 2011-08-29
Publication date: 2013-03-07

Abstract

Provided are a regional electric power control system and a regional electric power control method for controlling regional power demand and supply by allowing surplus electric power generated in a region to be consumed within the region. A control unit is provided with a demand and supply estimation unit for estimating surplus electric power generated in a prescribed region at a prescribed future time on the basis of electric power control information, a customer selection unit for selecting from among respective customers a customer as a prescribed customer that will be requested to consume the surplus power, a request information generation unit for generating request information that requests the consumption of surplus electric power and sending the information to a customer-side electric power control device owned by the prescribed customer, and a performance determination unit for determining on the basis of electric power control information acquired from the customer-side electric power control device owned by the prescribed customer, whether or not the prescribed customer has performed the consumption of electric power in accordance with the request information.

Description

Regional power management system and regional power management method

The present invention relates to a regional power management system and a regional power management method.

A path and electrical equipment for supplying commercial power from a power supplier such as an electric power company to each consumer (personal house, building, factory, etc.) are called a power system. In normal cases, except for some large-scale customers, each customer used only commercial power from the power grid.

However, in recent years, there has been an urgent need to respond to a low-carbon society, and the spread of energy sources with low impact on the natural environment, such as solar power generation, wind power generation, heat pumps, and fuel cells, is desired. Since these power sources are provided for each consumer, they are called distributed power sources for conventional large-scale power plants that are located away from the city (Patent Documents 1 and 2).

JP 2007-336796 A JP 2008-271777 A

When the spread rate of the distributed power source was low and the amount of power generation was relatively small, the distributed power source was used as an auxiliary to suppress the consumption of power supplied from the power system. On the other hand, in recent years, the penetration rate of distributed power sources has increased and the amount of power generation has also increased.

Therefore, for example, during the daytime hours, the power generated by each consumer is larger than the power consumed by each consumer, and surplus power may be generated. For example, in a residential area during the day, since a part of the family goes out, the power consumption of the house decreases. However, the photovoltaic power generator generates power regardless of the presence or absence of a resident. Therefore, surplus power is generated when the amount of power generated by the photovoltaic power generator exceeds the power consumption of the house.

Surplus power can be sold to power suppliers. However, in general, a distributed power source that uses natural energy has a large amount of power generation. Therefore, in order for the power system to receive power from the distributed power source, it is necessary to improve or reinforce the substation equipment and the distribution network. This is because if the amount of power flowing from each distributed power source into the power system varies, the frequency of the power supplied from the power system to each consumer varies and the quality deteriorates.

Thus, in the conventional technology, the power output from each distributed power source in the region cannot be used effectively, and the sale to the power system is also stopped within the allowable range of the existing facilities. That is, surplus power in the region is often wasted and is not effectively used.

Therefore, an object of the present invention is to provide a local power management system and a local power management method that can request a consumption of power by selecting a predetermined consumer from a plurality of consumers in order to reduce surplus power. It is to provide. Another object of the present invention is to provide a regional power management system and a regional power management method that can effectively eliminate surplus power by increasing the feasibility of power consumption by a predetermined consumer. . Further objects of the invention will become clear from the description of the embodiments described later.

In order to solve the above problems, a regional power management system according to the present invention is a regional power management system that manages each consumer-side power management device for monitoring the power state of each consumer in a predetermined region. A communication interface unit for communicating with each consumer side power management device; and an information management unit for storing and managing information received from each consumer side power management device via the communication interface unit; A control unit that executes predetermined processing based on information managed by the information management unit. The control unit acquires power management information indicating the power consumption and power generation amount of each consumer from each consumer side power management apparatus via the communication interface unit, and manages the acquired power management information by the information management unit. Further, the control unit, based on the power management information, a supply and demand prediction unit for predicting surplus power generated at a predetermined time in a predetermined region, and a predetermined request for consumption of surplus power from each consumer. A request destination selection unit for selecting a customer and a request information for requesting consumption of surplus power are generated, and the customer-side power management that the predetermined customer has the request information through the communication interface unit A predetermined consumer consumes power according to the request information based on the request information generation unit to be transmitted to the device and the power management information acquired from the consumer-side power management device of the predetermined customer via the communication interface unit A performance determination unit for determining whether or not

The power management information acquired from the consumer-side power management device of at least a predetermined consumer includes correspondence information indicating that the request information is supported, and the performance determination unit is based on the correspondence information, You may comprise so that a predetermined consumer may determine whether electric power was consumed according to request information.

The request destination selection unit inquires of the consumer-side power management device of each consumer whether the surplus power can be consumed according to the request information, and returns a positive response to the query. You may select the consumer to have as a predetermined consumer.

Each customer-side power management apparatus can determine a response to an inquiry based on a preset policy.

The request destination selection unit obtains information on reliability from the reliability management unit for managing the information on the reliability of each customer, which is updated based on the determination result by the performance determination unit, and information on the reliability Based on the above, a consumer having reliability equal to or higher than a predetermined reliability threshold value can be selected as a predetermined consumer from each consumer.

The request destination selection unit acquires information on the transmission distance from the distance management unit for managing information on the transmission distance from the substation that supplies power to each consumer to each customer, and based on the information on the transmission distance A consumer having a power transmission distance equal to or less than a distance threshold of a predetermined value can be selected as a predetermined consumer from each consumer.

The request destination selection unit acquires information on the transmission distance from the distance management unit for managing information on the transmission distance from the substation that supplies power to each consumer to each customer, and further, the determination by the performance determination unit Obtain information on reliability from the reliability management section for managing the information on the reliability of each customer, which is updated based on the results, and from each customer, the transmission distance below the predetermined distance threshold And a consumer having reliability equal to or higher than a predetermined reliability threshold can be selected as the predetermined consumer.

The request information generation unit may generate the request information including the predetermined execution condition so that consumption of surplus power is permitted in a predetermined consumer when a predetermined execution condition set in advance is satisfied. Good.

At least a part of the configuration of the present invention can be realized as a computer program or a hardware circuit. The computer program can be distributed, for example, via a communication medium such as the Internet, a recording medium such as a hard disk or a flash memory device.

FIG. 1 is an overall configuration diagram of a regional power management system. FIG. 2 shows the electrical connection relationship between the distribution substation and each customer. FIG. 3 is a block diagram of a community power management system (CEMS). FIG. 4 shows an electrical configuration of a house including a HEMS (Home Energy Management System) as an example of a consumer side power management apparatus. FIG. 5 shows a configuration of supply and demand information as power management information transmitted from the HEMS or the like to the CEMS. FIG. 6 is an explanatory diagram showing a situation in which demand information for predicting the supply and demand of electric power in a region is generated, request information for eliminating surplus electric power is generated, and transmitted to a predetermined consumer. FIG. 7 shows a configuration of request information transmitted to a predetermined HEMS or the like. FIG. 8 is a table for managing customer reliability. FIG. 9 is a flowchart illustrating a process of selecting a consumer who requests power consumption. FIG. 10 is a table for managing requested customers. FIG. 11 is a flowchart illustrating processing for generating request information. FIG. 12 is a flowchart showing processing for detecting acceptance of a request. FIG. 13 is a flowchart illustrating a process for determining whether the requested power consumption has been implemented. FIG. 14 is an explanatory diagram illustrating a relationship between a power transmission distance and a margin for voltage fluctuation according to the second embodiment. FIG. 15 is a table for managing the distance between the substation and the customer. FIG. 16 is a flowchart illustrating a process of selecting a consumer who requests power consumption. FIG. 17 is a flowchart illustrating processing for requesting power consumption with execution conditions according to the third embodiment. FIG. 18 is a flowchart illustrating a process of consuming electric power after confirming that the execution condition is satisfied. FIG. 19 is a flowchart illustrating processing for determining whether or not the execution condition is satisfied in the HEMS according to the fourth embodiment. FIG. 20 is a flowchart illustrating processing for selecting a consumer who requests power consumption according to the fifth embodiment. FIG. 21 is a table for managing the reliability and predicted power consumption of each customer according to the sixth embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, as will be described in detail below, the CEMS 10 as a regional power management system monitors power consumption and power generation in each consumer in a predetermined region, and predicts the power supply and demand state. When the generation of surplus power is predicted, the CEMS 10 selects a predetermined consumer for consuming the surplus power.

The CEMS 10 can select, as a predetermined consumer, a customer who promises to consume more power than usual in a time zone where surplus power is generated. The CEMS 10 transmits request information for requesting power consumption to a predetermined consumer.

The apparatus (HEMS or the like) that manages a predetermined consumer operates the electrical equipment under management (or stops the electrical equipment) at the requested time, and reduces surplus power. The CEMS 10 determines whether or not the promise regarding the execution of the request information has been kept, and updates the reliability of the customer according to the degree of fulfillment of the promise.

Thereby, in this embodiment, it is possible to suppress the surplus power in the predetermined area with relatively high reliability while having a relatively simple configuration. This is because the power consumption is not requested to all the consumers in the predetermined area, but only the consumers satisfying the predetermined criteria (reliability, power transmission distance) are requested. Therefore, in this embodiment, it is possible to adjust the power supply and demand in a predetermined area without using a complicated prediction algorithm or the like.

FIG. 1 is an overall configuration diagram schematically showing a relationship between a power management system and a power system for each region. The configuration of the power system varies from country to country. The configuration shown in FIG. 1 is an example, and the present invention can be applied to configurations other than the configuration shown in FIG.

The electric power system 1 is a system for supplying electric power generated at the

power plants

2 and 3 to each consumer, and includes a power generation function, a substation function, a power transmission function, and a power distribution function. In the present embodiment, the power system 1 describes a case where AC power is supplied to each consumer. However, instead of a system that supplies AC power, a system that supplies DC power to each consumer may be used.

The central power supply 2 is a large-scale power plant such as a thermal power plant, a hydro power plant, or a nuclear power plant. The distributed power source 3 is, for example, a relatively large-scale wind power plant, solar power plant, solar thermal power plant, or the like. Since the distributed power source 3 shown in FIG. 1 belongs to the system side, it can be called a system side distributed power source. The distributed power supply 3 includes a relatively large-scale storage battery 3A. By storing the power generated by a wind power generator or the like in the storage battery 3A, the power can be used effectively.

The electric power generated by the centralized power supply 2 and the distributed power supply 3 is sent to the power transmission station 4 and boosted to a predetermined high voltage. The power transmission station 4 can also include a storage battery 4A. A part of the power from the centralized power supply 2 or the distributed power supply 3 can be stored in the storage battery 4A.

The power transmission station 4 is connected to each distribution substation 5 (1), 5 (2) via a power transmission network 6, and high-voltage AC power is supplied to each distribution substation 5 (1), 5 ( 2). The power transmission network 6 may include one or a plurality of substations, but is omitted in FIG.

The distribution substations 5 (1) and 5 (2) reduce the voltage value of the power from the power transmission station 4 and supply power of a predetermined voltage to each consumer. When not particularly distinguished, it is referred to as a distribution substation 5. Each distribution substation 5 supplies electric power to each consumer via a plurality of power supply lines 7.

1, one distribution substation 5 (1) includes a plurality of power supply lines 7 (1a) and 7 (1n). The other distribution substation 5 (2) includes a plurality of other power supply lines 7 (2a) and 7 (2n). When not particularly distinguished, it is referred to as a power supply line 7.

Each power supply line 7 is provided with one CEMS 10. Specifically, the CEMS 10 (1a) is provided for the power supply line 7 (1a), the CEMS 10 (1n) is provided for the power supply line 7 (1n), and the CEMS 10 (2a) is provided for the power supply line 7 (2a). A CEMS (2n) is provided in the power supply line 7 (2n). Unless otherwise distinguished, it is called CEMS10. A configuration in which one CEMS 10 is provided for a plurality of power supply lines 7 may be employed.

HEMS (Home Energy Management System) 20, BEMS (Building and Energy Management System) 30, FEMS (Factory Energy Management) shown in FIG.
System) 40 and EV-EMS (Electric Vehicle-Energy Management System) 50 are devices provided in each consumer, and correspond to a “customer-side power management device”. Each of these

devices

20, 30, 40, 50 is managed by the CEMS 10. Each consumer is given

reference numerals

200, 300A, 300B, 400, and 500, as will be described later with reference to FIG.

FIG. 2 is an overall view showing an example of a physical configuration of the power management system. Although the same applies to other drawings described below, examples of configurations to which the present invention can be applied are disclosed in the respective drawings. The scope of the present invention is not limited to the configuration described in the drawings.

First, the distribution network will be explained. A distribution substation 5 and a high-voltage substation 5H are connected to the power transmission network 6. For example, the distribution substation 5 converts AC power of tens of thousands of kilovolts into AC power of several thousand kilovolts and supplies the AC power to the power supply lines 7 (1) and 7 (2). The high voltage substation 5H generates AC power having a voltage higher than the output voltage of the distribution substation 5 and supplies the AC power to the high voltage power supply line 7H. Hereinafter, when not particularly distinguished, it is referred to as a power supply line 7.

Each power supply line 7 includes, for example, a section switch 71, an automatic voltage regulator (SVR) 72A, a static reactive power compensator (SVC) 72B, and a voltage regulator 72C. And are provided. Unless otherwise distinguished, it is called a voltage regulator 72. In the example of FIG. 2, the voltage regulator 72C is provided in the high-voltage power supply line 7H, and the SVR 72A and the SVC 72B are provided in the power supply line 7 (1). Further, an interconnection switch 73 is provided between the power supply lines 7.

The segment switch 71 is a switch circuit that opens and closes the power supply line 7. The SVR 72A and the SVC 72B are circuits that automatically adjust the voltage. The interconnection switch 73 is a switch circuit for connecting the power supply lines 7 to each other and blocking the power supply lines 7. By controlling the interconnection switch 73, even when a disconnection or the like occurs in one power supply line 7, power can be supplied from the other power supply line 7 to each consumer.

Each

circuit

71, 72A, 72B, 73 provided in the power supply line 7 is connected to a communication master station (RTU: Remote Terminal Unit) 710, 720. The

communication master stations

710 and 720 are connected to the

circuits

71, 72A, 72B, and 73 on the power supply line 7 via communication slave stations (FTU: Feeder Terminal Units) (not shown).

One communication master station 710 is connected via a communication line 711 to a circuit 72C provided in the high-voltage power supply line 7H. The other communication master station 720 includes

circuits

71, 72A, 72B provided in the power supply line 7 (1), the power supply line 7 (1), and the power supply line 7 (2) via the communication line 721. Are connected to the interconnection switch 73 that connects the two. Further, the other communication master station 720 connects the circuit 71 provided in the power supply line 7 (2), the power supply line 7 (2), and the power supply line 7H through another communication line 722. Connected to the interconnection switch 73.

The

communication master stations

710 and 720 are connected to the CEMS 10. Thereby, the CEMS 10 can remotely monitor the states of the

circuits

71, 72A, 72B, 73.

The power supply line 7 is connected to a plurality of pole transformers 74. The power receiving equipment of each customer 200, 300 </ b> A, 300 </ b> B, 400, 500 is supplied with power from the power supply line 7 via the nearest pole transformer 74. Not all consumers receive power via the pole transformer 74. For example, a power cable provided in the ground may be used, or power may be received directly from the power supply line 7.

FIG. 2 shows a plurality of types of consumers, that is, a detached house 200, a building 300A, an apartment house 300B, a factory 400, and a charging station 500.

In the detached house 200, the power generation amount and the power consumption amount are managed by a HEMS and a smart meter (SM in the figure). In the building 300A and the apartment house 300B, the power generation amount and power consumption amount of the entire building and the power generation amount and power consumption amount of each area in the building are managed by a BEMS (Building and Energy Management System) and a smart meter. . In the factory 400, the power generation amount and the power consumption amount are managed by a FEMS (Factory Energy Management System) and a smart meter. The charging station 500 manages the power generation amount and the power consumption amount by an EV-EMS (Electric Vehicle Management System) and a smart meter.

The smart meter is connected to an MDMS (Meter Data Management System) 80 of an AMI (Advanced Metering Infrastructure) 80 via a communication line 810. The CEMS 10 is connected to the MDMS 80, and acquires data (actually measured values) related to the power generation amount and the power consumption amount from the smart meter of each consumer via the MDMS 80.

The CEMS 10 is connected to the HEMS, BEMS, FEMS, and EV-EMS via another communication line 820. The CEMS 10 uses other communication lines 820 to receive supply / demand information described later from HEMS, BEMS, FEMS, and EV-EMS, and to transmit planning information (request information) described later to HEMS, BEMS, FEMS, and EV-EMS. Or send.

It should be noted that at least one distributed power source (customer-side distributed power source) 60 that uses natural energy can be provided in the area that the distribution substation 5 is in charge of. Examples of the distributed power source 60 include a wind power plant 61, a power storage plant 62, and a solar power plant 63. Furthermore, you may provide apparatuses, such as a solar thermal power plant and a heat pump, for example. The power storage station 62 stores renewable power generated by the wind power plant 61, the solar power plant 63, and the like. The power storage 62 may be configured to convert electrical energy into other energy such as heat energy and store the energy.

The CEMS 10 is also connected to a distributed power source 60 provided in the area, and can manage the power generation amount, the power storage amount, and the like of the distributed power source 60.

FIG. 3 shows the configuration of the CEMS 10. The CEMS 10 is provided for each predetermined area, and manages the power state of each consumer belonging to the predetermined area. The power state includes a state of power generation and / or a state of power consumption.

The CEMS 10 includes, for example, a supply and demand adjustment function 110 as a “control unit” and an EMS information control hub function 120. The EMS information control hub function 120 includes, for example, a common adapter I / F 121, a common API (Application Programming Interface) 122, a common data processing function 123, a common data management function 124, a database group 125, and a security function 126. It has.

The supply and demand adjustment function 110 predicts the amount of surplus power generated in the area in charge of the CEMS 10, and creates information for reducing the surplus power. The supply and demand adjustment function 110 includes, for example, a power supply and demand prediction unit 111, a request destination selection unit 112, a request information generation unit 113, and a performance determination unit 114. Details of each

function

111, 112, 113, 114 will be described later.

The EMS information control hub function 120 processes and stores data collected from the HEMS 20, BEMS 30, FEMS 40, EV-EMS 50, power generation and power storage station 60, and provides it to an external device as necessary.

The common adapter I / F 121 is an interface for bidirectional communication with the common adapter CA included in each customer-

side device

20, 30, 40, 50, 60. In order to smoothly communicate with the

devices

20, 30, 40, 50, 60 manufactured by different vendors, each of these devices is provided with a common adapter CA for performing standardized communication.

The common API 122 is an interface for two-way communication with a computer owned by an external company such as the service provider 90A or the application developer 90B. The EMS information control hub 120 provides data regarding the local EMS to the

external vendors

90A and 90B. The service provider 90A and the application developer 90B may be referred to as external contractors 90.

Examples of the external supplier 90 include a manufacturer or a seller of various products used by each consumer, a weather forecaster that provides weather information, and a consultant company that provides advice on electric power.

The common data processing function 123 processes the data acquired from each

customer side device

20, 30, 40, 50, 60, etc. as predefined common data. The common data management function 124 stores common data in the database group 125. The database group 125 stores various types of information related to EMS in the area.

The security function 126 ensures the reliability and safety of communication between the CEMS and each customer-

side device

20, 30, 40, 50, 60, and the like. The security function 126 authenticates a communication partner, encrypts communication contents, and decrypts encrypted communication.

FIG. 4 schematically shows an electrical configuration of a general detached house 200. The house 200 includes a HEMS 20, a smart meter 21, a distribution board 22 with a meter, a PCS (Power Conditioning System) 23, a PV (PhotoVoltaic) 24, a battery 25, a plurality of electrical devices 26A-26H, PLC (Power Line Communications) 27 is provided.

The HEMS 20 manages the power state (both power generation and power consumption) in the house 200 and is connected to the CEMS 10. The HEMS 20 can be configured as a microcomputer system including, for example, a microprocessor, a memory, and a communication interface (all not shown). The BEMS 30, FEMS 40, and EV-EMS 50 can also be configured as a microcomputer system.

The HEMS 20 has a monitor display 20A. The monitor display 20A may be integrated with the HEMS 20, or may be formed separately from the HEMS 20. Furthermore, the structure which utilizes the display apparatus which displays a television broadcast etc. as a monitor display of HEMS20 may be sufficient.

The policy 20B is stored in the memory of the HEMS 20. The policy 20B is information for determining whether or not to accept the request information (plan information) from the CEMS 10. The policy 20B can be manually set by the user, an initial policy registered in advance can be used as it is, or the initial policy can be manually changed by the user.

The smart meter 21 communicates with the purchased power meter for measuring the power purchased from the power system 1, the sold power meter for measuring the power sold to the power system 1, and the MDMS 80 in FIG. 2. A communication circuit. The smart meter 21 and the HEMS 20 may be configured to communicate with each other.

The distribution board 22 with a meter is a device for distributing electric power to each room of the house 200, and includes an earth leakage breaker and the like. The distribution board 22 is connected to the HEMS 20.

The PCS 23 controls a PV (solar power generation device) 24 and a battery 25. The PCS 23 is connected to the distribution board 22. Further, the PCS 23 is also connected to the HEMS 20. The electric power generated by the PV 24 is stored in the home battery 25 or an electric vehicle battery (not shown). The PCS 23 supplies the power stored in the battery 25 to each device 26A-26H in the house 200 or sells the power to the power system 1 via the smart meter 21 so that voltage fluctuation does not occur. To do.

Furthermore, excess power generated in the house 200 can be supplied to other customers managed by the same CEMS 10. Or, for example, a plurality of CEMSs 10 cooperate to supply surplus power in one house to another house 200 or building 300A managed by another CEMS 10 belonging to the same distribution substation 5 You can also.

Examples of the electrical equipment in the house 200 include a fuel cell 26A, a heat pump water heater 26B, an air conditioner 26C, a refrigerator 26D, a dryer 26E, a blind 26F, a lighting S6G, and an electric vehicle (EV / PHV). ) 26H.

Blind 26F is provided with an actuator such as an electric motor and opens and closes manually or automatically. The electric vehicle includes, for example, an EV (Electric Vehicle) that runs only with a battery and an electric motor, and a PHV (Plug-in Hybrid Vehicle) that can be charged from an electric outlet of the house 200. In addition, not only an electric vehicle but an electric motorcycle may be used.

The PLC 27 is a device for using the power wiring in the house 200 as a communication line to communicate between the HEMS 20 and each device 26A-26H.

FIG. 5 shows power supply and demand information D10 transmitted from each customer to the CEMS 10. Supply / demand information D <b> 10 is created from each consumer for each device that the consumer has, and is transmitted to CEMS 10. The supply and demand information D10 is transmitted periodically, for example, every 30 minutes.

The supply and demand information D10 includes, for example, a customer ID C100, a device ID C101, a power consumption / power generation amount C102, a time C103, an operation C104, and a state C105. Items other than these may be included.

The customer ID C100 is information for identifying each customer. The device ID C101 is information for identifying each electric device (PV, battery, home appliance, etc.). The power consumption / power generation amount C102 is information indicating the amount of power consumed by the device specified by C101, or information indicating the amount of power generated from the device specified by C101.

The time C103 is information indicating the time when the supply and demand information D100 is created. The operation C104 is information related to the operation of the device such as “operated on”, “operated off”, and “set temperature has been changed to 18 degrees”. The state C105 is information indicating various states of the device such as “power generation”, “power consumption”, “charging”, “maintenance”, “error occurrence”, and the like.

FIG. 6 shows a state in which power demand and power supply in a region are predicted, surplus power is calculated, and information for consuming the surplus power in the region is created. The process of FIG. 6 is executed by the supply and demand adjustment function 110.

The supply and demand prediction unit 111 predicts the supply and demand of power every predetermined cycle (for example, every 30 minutes) based on, for example, the actual value of power supply and demand obtained from the supply and demand information D10, the weather forecast, and the calendar. The power supply and demand refers to power demand and power supply.

The supply and demand prediction unit 111 compares the predicted value of power supply with the predicted value of power demand for each time zone, and predicts whether the demand and supply are balanced for each time zone. A graph G10 illustrated in FIG. 8 is a power supply prediction graph illustrating changes in power supply for each time period. The graph G11 is a demand prediction graph showing changes in power demand for each time zone. The graph G12 shows the difference between the power supply prediction (G10) and the power demand prediction (G11). When the power supply exceeds the power demand, surplus power SP is generated.

Demand and supply of power are balanced in a time zone where the predicted power demand and the predicted power supply coincide. In this case, since the electric power required by each consumer in the area is supplied from the distributed power supply in the area, it is not necessary to receive power supply from the power system 1.

Surplus power SP is generated in a time zone in which the predicted power supply is more than the predicted power demand. In this case, as described later, plan information (request information) for encouraging consumption of surplus power SP is distributed to each predetermined consumer in the area before the time zone when surplus power SP occurs. To do.

The request destination selection unit 112 selects a plurality of predetermined consumers from the

respective consumers

200, 300, 400, and 500 in the area under the control of the CEMS 10 based on a predetermined selection criterion. In the present embodiment, the request destination selection unit 112 uses the table T10 that manages the reliability of the customer, and preferentially selects from the customers who are likely to fulfill the promise.

The reliability of the customer means the possibility that the customer will execute a request for power consumption from the CEMS 10. More specifically, the reliability of the consumer means that if the

devices

20, 30, 40, 50, 60 that manage the energy of the consumer accept the request for power consumption from the CEMS 10, the power is consumed as promised. It is possible to do.

In another embodiment to be described later, the request destination selection unit 112 uses a table T30 for managing the transmission distance from the substation 5 (or the transmission station 4) to each consumer, and gives priority to consumers with a short transmission distance. select.

The request destination selection unit 112 selects a plurality of highly reliable customers and registers them in the request destination management table T20. The request destination management table T20 manages customers who request consumption of surplus power.

The request information generation unit 113 creates information (also referred to as plan information) for consuming surplus power, and transmits the information from the common adapter interface 121 to each predetermined consumer selected as a request destination.

The configuration of the request information D20 will be described with reference to FIG. The request information D20 is created and transmitted for each selected predetermined consumer. The request information D20 includes, for example, customer ID C200, time zone C201, point C202, upper limit value C203 of total power consumption, lower limit value C204 of total power consumption, device ID C205, and upper limit value of power consumption. C206 and the lower limit C207 of power consumption are included. Items other than these may be provided.

The customer ID C200 is information for identifying a predetermined customer. The time zone C201 is information indicating a time zone to which the incentive is applied, that is, a time zone in which surplus power is generated in the region.

Point C202 is information indicating the contents of the incentive. An incentive is a benefit given to the consumption of surplus power. As incentives, for example, consumers who cooperate in the consumption of surplus power are given a discount on the electricity rate than the normal rate, are granted electronic money that can be used to pay for electricity, etc. Preferential right to use a car is given. Such an incentive is digitized and recorded in the point C202.

The point value (incentive) varies depending on the performance of each customer. For example, more points are given to consumers who promise and consume surplus power. Even if it is a consumer who promised consumption of surplus electric power, the point (including 0) lower than the point initially shown is given to the consumer who did not perform it.

The upper limit value C203 of the total power consumption is information indicating the upper limit value of surplus power that can be consumed by the consumer. In the present embodiment, an upper limit value is set for each consumer so that surplus power generated in the region can be used fairly by each selected consumer.

The lower limit value C204 of the total power consumption is information indicating the lower limit value of surplus power that should be consumed by the consumer. In this embodiment, the amount of surplus power that each consumer should consume is presented. The lower limit value C204 may be an effort goal or a required obligation. In the present embodiment, a penalty such as a point reduction is imposed on a consumer who has not consumed power (surplus power) equal to or higher than the lower limit C204 in a designated time zone. Furthermore, in the present embodiment, the consumer that has not consumed the electric power of the lower limit value 204 or more is set to be low in reliability, and thus is less likely to be selected as a predetermined consumer that consumes surplus power. Therefore, there is a penalty that the opportunity to consume surplus power is reduced.

The device ID C205 is information for identifying a device owned by a consumer. The upper limit value C206 of power consumption indicates the upper limit value of surplus power that can be used in the device. The lower limit value C207 of power consumption indicates the lower limit value of surplus power that should be consumed by the device.

In this embodiment, surplus power allocated to a consumer is reassigned for each device that the consumer has. That is, when the upper limit value C206 of power consumption allocated to each device of the consumer is summed, the upper limit value C203 of total power consumption is obtained. Similarly, when the lower limit value C207 of the power consumption of each device is summed, the lower limit value C204 of the total power consumption is obtained.

In FIG. 7, only one device ID is shown, but in reality, an upper limit value and a lower limit value of power consumption are set for each device (device to be managed by CEMS) possessed by the customer identified by the customer ID. Is done.

The configuration of the request information D20 shown in FIG. 7 is an example, and other configurations may be used. For example, the upper limit value C206 and the lower limit value C207 of power consumption for each electrical device may not be present. Further, the power consumption value may not be indicated by a specific numerical value, but may be relatively indicated such as “10% increase in power consumption”. For example, a configuration that indicates an increment from the power consumed in the same time zone yesterday may be used.

In the embodiment described later, a condition (execution condition) that permits the consumption of surplus power, created by the condition setting unit 115, is added to the request information D20.

Return to FIG. The fulfillment determination unit 114 determines whether a predetermined consumer has consumed surplus power according to the instruction of the request information D20. Based on the determination result for each customer, the value of the reliability C11 in the table T20 for managing the reliability of the customer is updated (see FIG. 8).

Referring to FIG. 8, the configuration of table T10 for managing the reliability of the customer will be described. For example, the reliability management table T10 manages the customer ID C10 and the reliability C11 in association with each other. The customer ID C10 is identification information for identifying each customer managed by the CEMS 10. The reliability C11 manages a value indicating the reliability of the customer.

FIG. 9 is a flowchart showing a process for requesting consumption of surplus power. Each process described below is executed by the supply and demand adjustment function 111 as a “control unit” of the CEMS 10. More specifically, the microprocessor 111 of the CEMS 10 executes predetermined computer programs stored in the memory, thereby realizing the functions 111 to 114, and the following processes are executed by these functions. Therefore, the operation subject of each process may be any of CEMS 10, supply and demand adjustment function 110, functions 111 to 114, and a microprocessor.

The request destination selection part 112 acquires the prediction about the supply and demand of electric power from the electric power supply and demand prediction part 111 (S10). The request destination selection unit 112 refers to the customer reliability management table T10 (S11), and selects one determination target customer ID (S12).

The request destination selection unit 112 determines whether or not the value of the reliability C11 for the determination target customer ID is equal to or greater than a predetermined reliability threshold Th1 (S13). When the reliability value is less than the threshold value Th1 (S13: NO), the request destination selection unit 112 returns to S12 and selects the next consumer ID as a determination target.

When the reliability value is equal to or greater than the threshold Th1 (S13: YES), the request destination selection unit 112 inquires the power management devices 20 to 60 having the customer ID whether to participate in the surplus power consumption activity, and manages the power. It is determined whether or not the device has promised to consume surplus power (S14).

When the power management device having the determination target consumer ID has not promised the consumption of surplus power (S14: NO), the request destination selection unit 112 returns to S12 and selects the next consumer ID as the determination target. .

When the power management apparatus having the determination target customer ID promises to consume surplus power (S14: YES), the request destination selection unit 112 registers the customer ID in the request destination management table T20 (S15). The request destination management table T20 will be described later with reference to FIG.

The request destination selection unit 112 determines whether there is surplus power (S16). In other words, the request destination selection unit 112 determines whether the gap (surplus power) between the power demand and the power supply is within a predetermined range. For example, it is possible to determine whether or not the supply-demand gap has been eliminated by comparing the total power consumption amount allocated to a predetermined consumer with the surplus power value. When the supply and demand gap is eliminated (S16: NO), this means that the consumer required to consume surplus power has been selected, and thus this process ends.

When the supply and demand gap remains (S16: YES), the request destination selection unit 112 determines whether all customer IDs under the management of the CEMS 10 have been determined (S17). When the undetermined customer ID remains (S17: NO), the request destination selecting unit 112 returns to S12 and selects one undetermined customer ID.

If all customer IDs have been determined (S17: YES), the request destination selection unit 112 decreases the value of the reliability threshold Th1 by one level (S18). For example, when the initial value of the reliability threshold value Th1 is 80% and one stage is 10%, the request destination selection unit 112 reduces the value of the reliability threshold value Th1 to 70%. The reliability threshold value Th1 may be decreased by 1%.

The request destination selection unit 112 repeats the steps S12 to S17 based on the lowered reliability threshold Th1. In other words, the request destination selection unit 112 selects as many consumers as necessary in the order of high reliability in fulfilling the promise.

It should be noted that a configuration may be adopted in which a predetermined small number of consumers are randomly selected from unreliable consumers and the consumption of surplus power is requested. Thereby, the opportunity to participate in the consumption activity of surplus electric power can be given to the consumer with low reliability. Unreliable consumers can take advantage of this opportunity to increase their credibility.

FIG. 10 shows the configuration of the request destination management table T20. The request destination management table T20 manages customers who request consumption of surplus power.

The request destination management table T20 manages, for example, the request destination customer ID C20, the promised flag C21, and the performance level C22 in association with each other. The requested customer ID C20 is information for identifying a customer who requests consumption of surplus power. The promised flag C21 is information indicating that it is promised to consume surplus power according to the request information. When only the promised customer is recorded in the table T20, the promised flag C21 can be omitted.

The performance level C22 indicates how much surplus power is actually consumed. When power is consumed as instructed in the request information, the performance level is 100%. If no surplus power is consumed, the performance level is 0%. There are several ways to calculate the performance level.

One method is, for example, the value of power consumed exceeding the normal power consumption of the consumer (referred to as an increase value) and the amount of power consumption requested by the consumer (referred to as the requested value). Compare. If the increase value matches the request value, it is determined that the promise has been fulfilled 100%. When the increase value is less than the requested value, the fulfillment degree becomes a value smaller than 100%. Even if the consumer consumes power during the time when surplus power is generated, if the power consumption does not differ from the normal power consumption, it is determined that the promise specified in the request information is not fulfilled. .

FIG. 11 is a flowchart showing a process for generating the request information D20. The request information generation unit 113 refers to the request destination management table T20 (S20), and executes the following steps S21 to S24 for each request destination customer ID described therein (S21).

The request information generation unit 113 sets the power consumption amount requested to the customer having the processing target customer ID in the request information D20 (S22). For example, when the surplus power consumption is evenly distributed to each consumer registered in the request destination management table T20, the equal distribution amount is set in the request information. When setting an upper limit value and a lower limit value of power consumption, the upper limit value and the lower limit value can be calculated with the uniform distribution amount as a central value.

The request information generation unit 113 acquires the value of the reliability C11 for the processing target customer ID from the reliability management table T10, and sets an incentive according to the reliability in the request information D20 (S23).

The request information generation unit 113 transmits the request information D20 generated in this way to the management device that manages the request-destination customer (S24).

FIG. 12 is a flowchart showing a process in which the CEMS 10 and the consumer management device promise about the consumption of surplus power.

The request destination selection unit 112 of the CEMS 10 inquires of the power management apparatus (HEMS 20 in FIG. 12) of the target customer whether surplus power can be consumed according to the request information (S40). This inquiry information can include information such as a time zone in which surplus power should be consumed, for example. If the amount of power consumption requested is almost determined, the inquiry information may include the time zone and the power consumption.

When receiving the inquiry from the CEMS 10, the power management apparatus of the consumer determines whether to accept the request based on the policy 20B (S31). As the policy 20B, for example, (1) Accepting a request from CEMS unconditionally,
(2) Accept if the power consumption of the electrical equipment specified in advance by the user satisfies the request from CEMS,
(3) If the given incentive is greater than the user's desired value, accept the CEMS request,
(4) Accept the CEMS request only for the time period specified in advance by the user.
Etc. are considered. Other policies may be used.

The customer's power management apparatus returns to the CEMS 10 whether or not to receive the request (S32). The consumer's power management apparatus displays on the monitor display 20A whether or not the request has been accepted (S33). For example, the power management apparatus displays a message such as “accepting request from CEMS” on the monitor display 20A. When the power management device acquires the request information D20, “300 points are obtained by operating the ice maker, the hot water heater, and the air conditioner in the living room from 2 pm to 5 pm on the monitor display 20A. You can also display a message such as

The request destination selection unit 112 of the CEMS 10 determines whether or not the consumer's power management apparatus has accepted the request (S41). When the power management apparatus of the consumer accepts the request (S41: YES), the request destination selecting unit 112 registers the accepted consumer ID in the request destination management table T20 (S42). When the customer's power management apparatus declines the request (S41: NO), S42 is skipped and the process is terminated.

In this way, the request destination selection unit 112 transmits inquiry information to the power management apparatus of the target consumer, and confirms in advance whether or not to participate in the surplus power consumption activity. The request destination selection unit 112 can register the ID of the customer who promises to participate in the surplus power consumption activity in the request destination management table T20. Therefore, only the ID of the customer who promises to consume more power than normal can be stored in the request destination management table T20 in a predetermined time zone.

FIG. 13 is a flowchart showing the performance determination process. The performance determination unit 114 of the CEMS 10 executes the following steps S51 to S55 for each supply and demand information D10 acquired from each customer's power management apparatus (S50).

The performance determination unit 114 refers to the request destination management table T20 (S51), and determines whether the supply / demand information to be processed is the supply / demand information acquired from the power management apparatus of the request destination consumer (S52). . Specifically, the fulfillment determination unit 114 determines whether or not the value of the customer ID C100 in the supply and demand information D10 matches the value of any requested customer ID C20 registered in the requested customer management table T20. judge.

When the customer ID described in the supply and demand information is not registered in the request destination management table T20 (S52: NO), the supply and demand information is not the supply and demand information acquired from the power management apparatus of the request destination customer. Accordingly, the performance determination unit 114 returns to S50 and selects the next supply and demand information as a processing target.

When the customer ID of the supply and demand information is registered in the request destination management table T20 (S52: YES), the supply and demand information is obtained from the power management apparatus of the request destination customer. Therefore, the fulfillment determination unit 114 calculates the degree of fulfillment of the promise (performance level) by the requested customer (S53). The degree of fulfillment is obtained, for example, by dividing the increase (increase value) of power consumed by the consumer more than usual at the amount of power consumption (request value) allocated to the consumer. (Fulfillment level = Increase value / Request value).

The performance determination unit 114 stores the calculated performance level in the performance level C22 of the request destination management table T20 corresponding to the processing target customer ID (S54). The performance determination unit 114 updates the value of the reliability C11 of the reliability management table T10 based on the calculated performance level (C55).

In this embodiment configured as described above, instead of calling for consumption of surplus power uniformly to each consumer under the management of the CEMS 10, select a consumer having reliability equal to or higher than a predetermined value, Request consumption of surplus power. Therefore, in this embodiment, consumers who do not follow the request from the CEMS 10 can be excluded, and surplus power can be consumed only by reliable customers, and the power supply / demand gap can be adjusted with relatively high accuracy.

Furthermore, in this embodiment, whether or not to accept a request from the CEMS 10 is inquired in advance to a highly reliable consumer's power management apparatus, so even without using an advanced prediction algorithm or the like. Accurately eliminates the power supply-demand gap (surplus power).

In this embodiment, if it is before the time zone in which surplus power is predicted to be generated, the CEMS 10 can request the power management device of a predetermined consumer to consume surplus power. Instead of predicting tomorrow's power consumption based on the previous day's supply and demand results and notifying each customer, the customer can be asked to consume power in a predetermined time zone on that day. In other words, in this embodiment, a consumer is selected almost in real time, and the selected consumer is inquired whether to accept the request, and the consumer who has accepted the request can be asked to consume surplus power. Since the generation time of surplus power and the request time can be brought close to each other, it is possible to accurately select the consumers participating in the surplus power consumption activity in consideration of the convenience of each customer.

The second embodiment will be described with reference to FIGS. Each of the following embodiments including this embodiment corresponds to a modification of the first embodiment. Therefore, the difference from the first embodiment will be mainly described. In a present Example, the consumer who participates in the consumption activity of surplus electric power is selected based on the transmission distance from the substation 5 to a consumer.

FIG. 14 is a graph showing the relationship between the voltage change and the transmission distance. The vertical axis | shaft in FIG. 14 shows the value of the voltage supplied to a consumer's power receiving installation. The horizontal axis in FIG. 14 indicates the power transmission distance. The reference point of the power transmission distance may be, for example, the substation 5, the power transmission station 4, or the

power stations

2 and 3.

The voltage value is controlled so as to be within a range from the lower limit value VL to the upper limit value VU with the predetermined reference value VS as the center. Since the transmission line has a resistance value, the voltage drops as the transmission distance increases. In other words, the shorter the power transmission distance, the higher the voltage value.

When the surplus power is generated, the voltage value increases. If the increased voltage value exceeds the upper limit value VU, the quality of the power is lowered, which may affect the operation of the electric device. As described above, since the voltage value is higher as the power transmission distance is shorter, the margin dV to the upper limit value VU is smaller.

For example, in the example of FIG. 14, a consumer located at the shortest power transmission distance L1 has the smallest margin dV1 up to the upper limit value VU. In the consumer located at the medium transmission distance L2, the margin dV2 up to the upper limit value VU is larger than dV1 (dv1 <dV2). In the consumer located at the longest transmission distance L3, the margin dV3 to the upper limit value VU is larger than dV2 (dV1 <dV2 <dV3).

As described above, in a consumer with a small margin, for example, when a photovoltaic power generation device generates surplus power, the system voltage value at the consumer may exceed the upper limit value VU. Therefore, it is necessary to reduce the surplus power preferentially as the customer has a shorter transmission distance.

FIG. 15 is a table T30 for managing the transmission distance to each customer. This table T30 manages, for example, the customer ID C30 and the transmission distance C31 from the substation in association with each other.

FIG. 16 is a flowchart showing a request destination selection process according to this embodiment. The request destination selection process of this embodiment differs from the request destination selection process described in FIG. 9 in steps S11A, S13A, and S18A.

The request destination selection unit 112 of the present embodiment refers to the transmission distance management table T30 (S11A), and selects a customer whose transmission distance is equal to or less than a predetermined transmission distance threshold Th2 (S12A). The request destination selection unit 112 decreases the transmission distance threshold Th2 in a stepwise manner until only as many customers as necessary for eliminating excess power are selected (S18A).

More specifically, the request destination selection unit 112 acquires a prediction about the supply and demand of power from the power supply and demand prediction unit 111 (S10), and further refers to the transmission distance management table T30 (S11A) to determine the consumer to be determined One ID is selected (S12).

The request destination selection unit 112 determines whether the value of the transmission distance C31 for the determination target customer ID is equal to or less than a predetermined transmission distance threshold Th2 (S13A). When the value of the power transmission distance exceeds the threshold Th2 (S13A: NO), the request destination selection unit 112 returns to S12 and selects the next consumer ID as a determination target.

When the value of the transmission distance is equal to or less than the threshold Th2 (S13A: YES), the request destination selection unit 112 inquires the power management devices 20 to 60 having the customer ID whether to participate in the surplus power consumption activity, and the power management device. It is determined whether or not has promised the consumption of surplus power (S14).

When the power management apparatus having the determination target customer ID promises to consume surplus power (S14: YES), the request destination selection unit 112 registers the customer ID in the request destination management table T20 (S15).

The request destination selection unit 112 determines whether the surplus power has been eliminated (S15). When the supply and demand gap is eliminated (S16: NO), this process ends.

If all customer IDs have been determined (S17: YES), the request destination selection unit 112 increases the value of the power transmission distance threshold Th2 by one step (S18A). The request destination selection unit 112 repeats the steps S12 to S17 based on the increased power transmission distance threshold Th2.

This embodiment configured as described above also has the same effect as the first embodiment. Furthermore, in this embodiment, since a consumer with a small margin for voltage rise is preferentially selected, the reliability of the electrode system can be further maintained.

A third embodiment will be described with reference to FIGS. In the present embodiment, conditions are set for the implementation of the surplus power consumption activity indicated by the request information D20.

FIG. 17 is a flowchart showing request information generation processing according to this embodiment. This process is different from the process shown in FIG. 11 in step S25. The request information generation unit 113 of this embodiment sets the requested power consumption (S22), determines the incentive (S23), and then sets execution conditions (S25). The request information generation unit 113 transmits the request information D20 with execution conditions to the power management apparatus of a predetermined consumer (S24).

The execution condition is a condition for permitting consumption of surplus power. For example, in the case of a solar power generation device, the amount of power generation during rainy weather is less than during sunny weather. Accordingly, when unexpected rain falls due to sudden weather changes, the value of surplus power becomes smaller than the initial predicted value. In some cases, surplus power may not be generated. In such a situation, if the consumer consumes electric power as planned according to the request information D20, private power generation is not sufficient, and it is necessary to purchase additional electricity from the electric power company.

Therefore, in the present embodiment, an execution condition is attached to the request information D20, and the request information is transmitted to the power management apparatus of a predetermined consumer (S24). The execution condition may be described in the request information D20, or may be transmitted to the power management apparatus separately from the request information D20. Or the structure which memorize | stores execution conditions beforehand in a power management apparatus of a consumer may be sufficient. Alternatively, the execution condition may be managed only within the CEMS 10 without being transmitted to the consumer's power management apparatus. As will be described later with reference to FIG. 18, if the power management apparatus is configured to wait for an execution instruction from the CEMS 10 and consume surplus power, it is not necessary to store execution conditions in the power management apparatus.

As an execution condition, for example,
(1) Consumes surplus power in fine weather,
(2) Consuming surplus power when it is not raining,
(3) Consuming surplus power when the wind speed is equal to or higher than a predetermined value;
Etc.

FIG. 18 is a flowchart showing a process in which a consumer's power management apparatus consumes surplus power after waiting for an execution instruction from the CEMS 10.

The CEMS 10 determines whether or not the remaining time until the consumption of surplus power is equal to or less than the predetermined value Th3 (S60). In other words, the CEMS 10 determines whether it is a time when surplus power is predicted to be generated.

When the execution time becomes equal to or less than the threshold Th3 (S60: YES), the CEMS 10 determines whether or not the execution condition is satisfied based on the weather information or the like (S61). Here, the execution condition is defined as a condition regarding the weather, and the information regarding the weather can be appropriately acquired from a server or the like that distributes the weather data.

The CEMS 10 can calculate the execution degree (S62). The execution degree is a ratio of the power consumption actually consumed in the power consumption instructed by the request information D20. For example, when the power consumption indicated by the request information D20 is based on the amount of light received in fine weather, the CEMS 10 calculates the execution degree based on the current light reception amount (execution degree = value based on current situation / request). (Value used as reference when generating information). In the case of bad weather, the execution degree may be set to 0%. If the execution degree is set to 0%, the requested surplus power consumption activity is canceled.

The CEMS 10 transmits an execution instruction to the power management apparatus of the requested customer (S63). The execution instruction can include the degree of execution. Instead of the degree of execution, a configuration of simply executing or not transmitting to the power management apparatus may be used.

When receiving the execution instruction from the CEMS 10 (S70: YES), the customer's power management apparatus determines whether the execution timing instructed by the request information D20 has arrived (S71). When the execution timing arrives (S71: YES), the power management apparatus checks whether or not the state of the electric device that consumes the surplus power is normal (S72).

When the electrical device that is scheduled to use surplus power is in a normal state (S72: YES), the power management apparatus operates the electrical device to consume surplus power (S73). When the electrical device to be actuated is not in a normal state (S72: NO), this process ends. Note that the CEMS 10 may be notified that the electric device to be activated cannot participate in the surplus power consumption activity due to a malfunction.

In step S72, the case where it is determined whether or not the electric device to be operated is in a normal state has been described. Instead, it is determined whether or not the electric device to be operated is in an operable state. You may do it. For example, in a water heater, when the hot water in the tank is full, no more hot water can be produced. Therefore, in step S72, it may be determined whether the operation is possible.

The present embodiment configured as described above can be applied to either the first embodiment or the second embodiment. In this embodiment, a condition is set for execution of surplus power consumption defined by the request information D20, and surplus power is consumed when the condition is satisfied. Therefore, in this embodiment, it is possible to control the supply and demand of electric power in response to a rapid environmental change (for example, a change in weather), and the reliability of the system is improved.

Furthermore, in this embodiment, the CEMS 10 determines whether or not the execution condition is satisfied and transmits it to the power management apparatus of each consumer. Therefore, each power management apparatus does not need to store execution conditions or determine whether or not the execution conditions are satisfied.

A fourth embodiment will be described with reference to FIG. In the present embodiment, the consumer's power management device determines whether or not the execution condition is satisfied. FIG. 19 is a flowchart illustrating surplus power consumption processing executed by the consumer's power management apparatus.

The power management apparatus determines whether the execution timing instructed by the request information D20 has arrived (S80). When the execution timing has arrived (S80: YES), the power management apparatus determines whether the execution condition set in advance or notified by the request information D20 is satisfied (S81).

The power management apparatus can determine whether or not the execution condition is satisfied based on the information obtained from the electrical equipment under the management. For example, in the case of a solar power generation device, when the power generation amount is larger than a predetermined reference value, it can be determined that the sky is clear. Or when the blind control apparatus which controls opening and closing of a blind according to the intensity | strength of the sunlight which injects from a window is connected to the power management apparatus, a weather can also be estimated from the operating state of a blind control apparatus. As described above, the power management apparatus can obtain information necessary for determining whether or not the execution condition is satisfied from the electrical device to be actuated or the electrical device other than the electrical device to be actuated.

When the power management device determines that the execution condition is satisfied (S81: YES), the power management device checks whether the electrical device to be actuated is normal (S82). If it is normal (S82: YES), the electrical device to be actuated Is used to consume surplus power. In step S82, it may be determined whether or not the electrical device to be actuated is in an operable state.

This embodiment, which is configured in this way, also has the same operational effects as the third embodiment. In this embodiment, whether or not the execution condition is satisfied is determined by the power management apparatus of the consumer, so that it is not necessary to transmit an execution instruction from the CEMS 10 to each power management apparatus, and mixing of communication networks can be suppressed. . Furthermore, when the weather condition suddenly changes locally, the operation target device can be operated according to the actual situation of each consumer, and surplus power can be suppressed.

The fifth embodiment will be described with reference to FIG. In the present embodiment, the requested customer is selected in consideration of both the reliability of the customer and the transmission distance.

FIG. 20 is a flowchart showing a request destination selection process according to this embodiment. The request destination selection unit 112 according to the present embodiment acquires a prediction of power supply and demand from the power supply and demand prediction unit 111 (S100). The request destination selection unit 112 selects one determination target customer ID (S101).

The request destination selection unit 112 determines whether the value of the transmission distance C31 for the determination target customer ID is equal to or less than the transmission distance threshold Th2 (S102).

When the power transmission distance of the customer is equal to or less than the threshold Th2 (S102: YES), the request destination selection unit 112 determines whether the value of the reliability C11 of the customer ID is equal to or greater than a predetermined reliability threshold Th1 (S103). ).

When the transmission distance is equal to or greater than the threshold Th2 (S102: NO) and when the reliability value is less than the threshold Th1 (S103: NO), the request destination selecting unit 112 returns to S101 and sets the next customer ID. Select as a judgment target.

When the reliability value is greater than or equal to the threshold Th1 (S103: YES), the request destination selection unit 112 inquires of the power management apparatus having the consumer ID whether to participate in the surplus power consumption activity, and the power management apparatus surplus. It is determined whether or not power consumption has been promised (S104).

When the power management apparatus having the determination target consumer ID has not promised the consumption of surplus power (S104: NO), the request destination selection unit 112 returns to S101 and selects the next consumer ID as the determination target. .

When the power management apparatus having the determination target consumer ID promises to consume surplus power (S104: YES), the request destination selection unit 112 registers the customer ID in the request destination management table T20 (S105).

The request destination selection unit 112 determines whether there is surplus power (S106). When the surplus power is eliminated (S106: NO), this process ends. When the supply-demand gap remains (S106: YES), the request destination selection unit 112 determines whether all customer IDs under management have been determined (S107). When the undetermined customer ID remains (S107: NO), the request destination selecting unit 112 returns to S101 and selects one undetermined customer ID.

If all customer IDs have been determined (S107: YES), the request destination selection unit 112 changes the power transmission distance threshold Th2 and / or the reliability threshold Th1 (S108), and returns to step S101.

Threshold value changing methods include, for example, a method that prioritizes transmission distance and a method that prioritizes reliability. In the method of selecting a consumer with priority on a short transmission distance, the reliability threshold Th1 is lowered stepwise without changing the transmission distance threshold Th2 as much as possible. According to this method, a consumer with a short transmission distance is preferentially selected.

In the method of giving priority to reliability, the power transmission distance threshold Th2 is increased stepwise without changing the reliability threshold Th1 as much as possible. According to this method, a highly reliable consumer is preferentially selected.

This embodiment can obtain the effects of the first embodiment or the second embodiment. Furthermore, this embodiment can be combined with the third embodiment or the fourth embodiment. In a present Example, the consumer who requests consumption of surplus electric power can be selected based on the viewpoint of both power transmission distance and reliability. Therefore, in the present embodiment, a more appropriate consumer can be selected, and supply and demand can be adjusted with high accuracy.

The sixth embodiment will be described with reference to FIG. In the present embodiment, the amount of surplus power consumption is allocated in consideration of the amount of power that can be consumed by the selected consumer. FIG. 21 shows a table T10A for managing the reliability of consumers. This table T10A manages customer ID C10, reliability C11, and power consumption value C12 in association with each other.

The power consumption value C12 indicates a power value that can be consumed by the consumer. For example, consumers who have a plurality of electric vehicles and consumers who have large-capacity water heaters or ice makers have a large amount of power that can be consumed.

Therefore, in this embodiment, for example, based on the historical data of power consumption at each consumer, the amount of power that can be consumed by each consumer is set in the column C12, and the consumption of surplus power is calculated based on the value. assign.

This embodiment can be applied to any of the embodiments described above. This embodiment can obtain the same effects as those of the first embodiment.

In addition, this invention is not limited to the Example mentioned above. A person skilled in the art can make various additions and changes within the scope of the present invention.

For example, the present invention can also be expressed as an invention of a computer program or a recording medium on which a computer program is recorded and which can be read and executed by a computer as follows.
Expression 1. A computer program for operating a computer as a regional power management system that manages each consumer-side power management device for monitoring the power state of each customer in a predetermined area,
In the computer,
The power management information indicating the power consumption and power generation amount of each consumer is obtained from each consumer side power management device,
The acquired power management information is managed by an information management unit,
Based on the power management information, the surplus power generated in the predetermined area at a predetermined time in the future is predicted,
From among each of the above consumers, select a predetermined consumer that requests consumption of surplus power,
Generating request information for requesting consumption of the surplus power;
The request information is transmitted to the consumer-side power management device of the predetermined consumer,
Based on the power management information acquired from the consumer-side power management device of the predetermined consumer, it is determined whether the predetermined consumer has followed the request information.
Computer program.

1: Power system, 5: Distribution substation, 10: CEMS, 20: HEMS, 30: BEMS, 40: FEMS, 50: EV-EMS

Claims

A regional power management system that manages each customer-side power management device for monitoring the power status of each customer in a predetermined area,
A communication interface unit for communicating with each consumer-side power management device;
An information management unit for storing and managing information received from each consumer-side power management device via the communication interface unit;
A control unit that executes predetermined processing based on information managed by the information management unit;
With
The controller is
The power management information indicating the power consumption amount and the power generation amount of each consumer is obtained from each consumer side power management device via the communication interface unit, and the obtained power management information is managed by the information management unit. ,further,
The controller is
Based on the power management information, a supply and demand prediction unit for predicting surplus power generated at a predetermined future time in the predetermined region,
A request destination selection unit for selecting a predetermined consumer who requests consumption of surplus power from each of the consumers,
A request information generation unit that generates request information for requesting consumption of the surplus power, and transmits the request information to the consumer-side power management device of the predetermined consumer via the communication interface unit; ,
Based on the power management information acquired via the communication interface unit from the consumer-side power management device of the predetermined consumer, it is determined whether the predetermined consumer has consumed power according to the request information. A performance determination unit for
Regional power management system with.
The power management information acquired from at least the customer-side power management device of the predetermined consumer includes correspondence information indicating that it corresponds to the request information,
The fulfillment determination unit determines whether the predetermined consumer has consumed power according to the request information based on the correspondence information.
The regional power management system according to claim 1.
The request destination selection unit
Inquiring to the consumer-side power management device of each consumer whether the surplus power can be consumed according to the request information,
Selecting a consumer having a consumer-side power management apparatus that has returned a positive response to the inquiry as the predetermined consumer;
The regional power management system according to claim 2.
Each of the customer-side power management devices determines a response to the inquiry based on a preset policy.
The regional power management system according to claim 3.
The request destination selection unit
The information on the reliability is updated from the determination result by the performance determination unit, the information on the reliability of each customer is acquired from the reliability management unit for managing the information,
Based on the information on the reliability, a consumer having reliability equal to or higher than a predetermined reliability threshold value is selected as the predetermined consumer from the consumers.
The regional power management system according to claim 4.
The request destination selection unit
Obtaining information on the power transmission distance from a distance management unit for managing information on power transmission distance from the substation supplying power to each consumer to each customer;
Based on the information related to the power transmission distance, a consumer having a power transmission distance equal to or smaller than a predetermined distance threshold is selected as the predetermined consumer from the respective consumers.
The regional power management system according to claim 4.
The request destination selection unit
Obtaining information on the power transmission distance from a distance management unit for managing information on power transmission distance from the substation supplying power to each consumer to each customer;
Furthermore, the information on the reliability is updated from the determination result by the performance determination unit, the information on the reliability of each customer is acquired from the reliability management unit for managing the information,
From among the consumers, a consumer having a power transmission distance that is equal to or less than a predetermined distance threshold and reliability that is equal to or greater than a predetermined reliability threshold is selected as the predetermined consumer.
The regional power management system according to claim 4.
The request destination selection unit selects the predetermined consumer from each of the consumers until the total amount of power consumed by the selected predetermined consumer reaches the surplus power.
The regional power management system according to any one of claims 5 to 7.
The request information generation unit includes the predetermined execution condition so as to permit consumption of the surplus power in the predetermined consumer when a predetermined execution condition set in advance is satisfied. Generate
The regional power management system according to claim 4.
The control unit determines whether or not the execution condition is satisfied, and when it is determined that the execution condition is satisfied, information indicating that the execution condition is satisfied includes information indicating that the predetermined consumer has the demand. Send to home power management device,
The regional power management system according to claim 9.
The consumer-side power management device of the predetermined consumer determines whether the execution condition is satisfied based on an operating state of an electric device under the management, and determines that the execution condition is satisfied. In this case, power is consumed according to the request information.
The regional power management system according to claim 9.
The power management information includes customer identification information for identifying each consumer, device identification information for identifying an electrical device under the control of the consumer side power management device, and the electrical device. Power consumption information indicating the amount of power consumption or power generation, and time information,
The correspondence information includes at least the customer identification information,
The performance determination unit includes:
Determining whether or not the customer identification information extracted from the power management information matches the customer identification information of the predetermined consumer;
When the customer identification information matches, the value of the power consumption information included in the power management information acquired from the consumer side power management device of the predetermined consumer, and the power consumption information Based on the history, it is determined whether the predetermined consumer has consumed power according to the request information,
The regional power management system according to claim 2.
A regional power management method for managing each consumer-side power management device for monitoring the power status of each consumer in a predetermined area by a regional power management system,
The regional power management system is:
Obtain power management information indicating the power consumption and power generation amount of each consumer from each consumer-side power management device,
The acquired power management information is managed by an information management unit,
Based on the power management information, predict surplus power generated at a predetermined time in the predetermined area,
From among each of the above consumers, select a predetermined consumer that requests consumption of surplus power,
Generating request information for requesting consumption of the surplus power;
Transmitting the request information to the consumer-side power management device of the predetermined consumer;
Based on the power management information acquired from the consumer-side power management device of the predetermined consumer, it is determined whether the predetermined consumer has followed the request information.
Regional power management method.