JP2012178935A - System power management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a system power management system in which consumers to be notified of the energy saving request are precisely selected by simple computation, and fairness can be secured based on the contracts which are concluded between the consumers and an electric power company and related to the power use amount.SOLUTION: When the energy saving request to the consumers is created, the power supply amount notified from smart meters 17 of the customers is normalized by the contract amount of power use in a mesh area management server 4, a threshold value for selecting the consumers as a target of energy saving based on a normalization result is determined using the statistical distribution and database of the normalized power supply amount of each consumer, and the energy saving request is notified to the consumers which have the power supply amount exceeding the threshold value.

Description

  The present invention has a power amount measurement notification means having a power amount measurement / notification function for measuring and notifying a supply power amount supplied from a system power supply to a consumer, and the supplied power notified from the power amount measurement notification means The present invention relates to a system power management system that manages the amount of power supplied in the system based on the amount.

  In recent years, in order to reduce the environmental load, when peak power is likely to exceed the amount of power supplied from the power plant, the power company notifies the consumers of energy saving requests and stabilizes the power supplied from the grid. Development of smart grid technology and demonstration experiments are being carried out. In addition to this reduction in peak power, a power generation system using natural energy such as sunlight that can generate power without emitting carbon dioxide has become widespread in each home, forming a distributed energy community.

  In general, power generation using natural energy represented by solar power generation varies greatly depending on weather conditions. Therefore, in order to stably supply power to the entire distributed energy community, the conventional technology controls the amount of power generation at the power plant based on weather information such as weather forecasts, and from smart meters installed at consumers. , Let the power management server managed by the power company notify the amount of power generated by the power generation system using natural energy and the amount of power consumed by the customer's in-home equipment, etc. The total amount of power supplied and consumed (total amount of power supplied) is monitored. And when this total supply electric power amount is likely to exceed the electric power generation amount of a power plant, the technology which notifies an energy-saving request | requirement with respect to each consumer from an electric power management server, and suppresses peak electric power is proposed ( For example, see Patent Document 1 below).

  Specifically, an energy-saving contract is signed between the power company and the customer for air conditioning equipment. If this total power supply is likely to exceed the amount of power generated at the power plant, the power management server that manages the power supply to the grid notifies the consumers who have signed this energy conservation contract of energy conservation requests. To do. The customer who has received the energy saving request determines whether or not to implement the energy saving request. When the customer notifies the power management server that the customer has implemented energy saving in response to the energy saving request, the electric power company performs a discount on the electricity charge for the customer who has implemented the energy saving according to the number of times of energy saving.

  In another conventional technique, a power management server that monitors power consumption is arranged in a large consumer such as a company, and the power consumption used by a client terminal such as a notebook computer connected to the network is monitored. When the power consumption of the client terminal is likely to exceed the amount of power contracted with the power company, the power management server sends power usage information (operation with commercial power, operation with battery, In response to this, each client terminal selects a power usage mode based on the specified information, that is, whether to supply power from a battery or from a commercial power supply system. Alternatively, the power consumption of the client terminal does not exceed the amount of power contracted with the power company by selecting the mode in which the main power is supplied from the grid but the battery is not charged. A technique is disclosed in which the control is performed (see, for example, Patent Document 2 below).

JP 2003-106603 A JP 2004-180404 A

  The conventional technique described in Patent Document 1 described above aims to suppress peak power for consumers who have an energy saving contract when the amount of power generated at the power plant is likely to exceed the amount of power consumed by each consumer. However, it is only for discounting electricity bills for consumers who have implemented energy conservation, and it is not an energy conservation requirement that matches the amount of power consumption that the customer has previously contracted with the power company. Because energy conservation requests are also notified to customers who control air conditioning equipment below the contracted amount of power, the power is distributed fairly to the customers based on the contract for power consumption. is not.

  Further, in Patent Document 1, an energy saving request is notified, but there is no mention of power generation amount control in a power plant, and quantitative information such as how much energy should be saved in view of the relationship with the amount of power generation. Is not described. For this reason, the problem arises in that the power supply from the power plant to the power system fails when the amount of power supply cannot be met by simply performing energy saving by the consumer. Furthermore, when the power plant is operated at full power so that the power supply from the power plant to the power system does not fail, when the consumer's power consumption decreases, a large amount of surplus power is generated and carbon dioxide is generated. This causes problems such as an excessive increase in the amount of emissions and an increased load on the environment.

  Further, the conventional technology described in Patent Document 2 described above controls the power consumption so as not to exceed the amount of power contracted with the power company by selecting the power supply method to the client terminal. Control is possible without a problem when the number of target devices connected is relatively small (several tens to several hundreds), but the number of customers is about tens of thousands to hundreds of thousands as in the smart grid system. In this case, the amount of calculation is so large that it cannot be managed by one power consumption monitoring server. In addition, when managing the entire system using multiple power consumption monitoring servers, processing such as selection of consumers to notify energy saving requests, creation of energy saving targets, generation of power generation plans, etc. for cost reduction It is necessary to develop a control algorithm that implements the process at high speed and with high accuracy, resulting in an extra cost increase.

  The present invention has been made to solve the above-described problems of the prior art, and its purpose is to accurately select a consumer who notifies an energy-saving request / target with a simple calculation. It is possible to provide a grid power management system capable of ensuring fairness on the basis of a contract relating to the amount of power used by a consumer and a power company.

In the grid power management system according to the present invention, each customer is provided with power amount measurement notification means for measuring and notifying the amount of power supplied from the grid power supply, and the power system is notified from this power amount measurement notification means. Based on the amount of electric power supplied to the inside of the system,
Electric energy control means for controlling the amount of electric power to be supplied into the system from the system power supply;
A total supply power amount calculation means for calculating the total supply power amount in the system by adding the supply power amounts of each consumer notified from the power amount measurement notification means;
Normalization means for normalizing the supplied power amount of each consumer notified from the power amount measurement notification means by a normalization coefficient preset for each consumer;
Comparison means for comparing the supply power amount normalized for each consumer by this normalization means with a predetermined threshold;
Count means for measuring the number of consumers exceeding the threshold for each comparison with the threshold by the comparison means;
When the difference between the total amount of power calculated by the total power consumption calculating means and the power allocation amount that predetermines the amount of power supplied from the system power supply is less than a predetermined value, Threshold value setting means for setting a threshold value for selecting a consumer to be energy-saving from among the consumers exceeding the threshold obtained by the counting means;
An energy saving request notifying means for notifying each customer who exceeds the threshold value set by the threshold value setting means;
including.

  According to the present invention, when the difference between the power allocation amount that defines the amount of power supplied from the grid power supply and the total power consumption in the grid is less than a predetermined value, the energy saving request is notified. The threshold value for selecting consumers is determined, and energy saving requests and notifications are implemented for consumers who exceed this threshold value, so it is easy to select consumers who should be notified of energy saving requests and targets. It can be performed with high accuracy. In addition, since the energy saving request / target is notified based on the contract regarding the power allocation amount that the consumer has with the electric power company, it is possible to always ensure fairness to the consumer. In addition, since the peak power shortage can be monitored and controlled in real time, the margin of surplus power can be made small, and therefore the generation of surplus power can be suppressed.

It is explanatory drawing which shows roughly the structure of the pinpoint weather forecast area of the system power management system in Embodiment 1 of this invention, and a mesh area. BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the whole system power management system in Embodiment 1 of this invention. It is a block diagram which shows the structure of the household equipment provided in the consumer shown in FIG. It is a block diagram which shows the structure of the smart meter arrange | positioned in the consumer shown in FIG. It is a block diagram which shows the structure of the mesh area management server shown in FIG. It is a block diagram which shows the structure of the power management server shown in FIG. It is a control flow of in-home equipment centering on a smart meter. It is a control flow which shows the response process with respect to the request command from a mesh area management server in the smart meter. It is explanatory drawing which shows an example of the database (priority table) which has registered the household equipment used as the energy saving object. It is explanatory drawing which shows an example of the energy saving database of the air-conditioner as an example of the household equipment of an energy saving object, and liquid crystal TV. It is a control flow which shows the whole processing operation | movement of a mesh area management server. It is a control flow which shows the energy-saving request | requirement / target formulation process by the mesh area management server. It is a control flow which shows the energy-saving request | requirement / target formulation process by the mesh area management server. It is explanatory drawing which shows an example of the table which shows the relationship between contract electric power consumption and a normalization coefficient. It is explanatory drawing which shows an example of the table which shows the normalization coefficient set for every consumer. It is explanatory drawing which shows an example of the table which shows the relationship between the weather forecast information used with respect to the consumer who has the power generation installation by natural energy, and a weather coefficient. It is explanatory drawing which shows an example of the threshold table preset in order to count the number of consumers who have the electric energy more than the threshold set in steps, and to create a histogram. It is explanatory drawing which shows an example of the database used in order to calculate the energy saving electric energy which generate | occur | produces about each consumer according to the setting of the threshold value which selects the consumer used as the energy saving object. It is explanatory drawing which shows the normalized supply electric power amount for every consumer used when determining the threshold value used in order to select the consumer used as the energy saving object. It is explanatory drawing which shows an example of the packet format at the time of notifying electric power generation amount, electrical storage amount, and electric power consumption from a smart meter to a mesh area management server. It is a control flow which shows the whole processing operation of a power management server. It is a control flow which shows the processing operation which monitors the power consumption of each mesh area in the same power management server. It is a control flow which shows the process in the case of determining the threshold value used in order to select the mesh area used as the energy-saving object by the power management server. It is explanatory drawing which shows an example of the threshold table preset in order to count the number of the mesh areas which have the supply electric energy more than the threshold set in steps, and to create a histogram. It is explanatory drawing which shows an example of the database used in order to calculate the energy saving electric energy which generate | occur | produces about each mesh area according to the setting of the threshold value which selects the mesh area used as the energy saving object. It is explanatory drawing which shows the electric power supply normalized for every mesh area used when determining the threshold value used in order to select the mesh area used as the energy saving object. It is a control flow which shows the energy-saving request | requirement, target formulation, and notification process by the power management server. It is a control flow which shows the recalculation / notification process of the power allocation amount to each mesh area by the same power management server. It is a control flow which shows the re-formulation process of the electric power generation plan by the electric power management server. It is explanatory drawing which shows an example of the database regarding the power plant used when re-developing the electric power generation plan by the electric power management server. An example of determining a threshold value for selecting consumers to be energy-saving based on a histogram created by counting the number of consumers having a power supply amount equal to or higher than a threshold set in stages is shown. It is explanatory drawing.

Embodiment 1 FIG.
FIG. 1 is an explanatory diagram showing the concept of a mesh area used in the system power management system according to Embodiment 1 of the present invention.
In FIG. 1, a square area indicated by a broken line indicates an area where a pinpoint weather forecast is issued. The pinpoint weather forecast includes a 20 km mesh wide-area forecast (predicted up to 8 days ahead, updated once a day) and a detailed forecast of 5 km mesh (predicted every hour up to 33 hours ahead, 4 days a day) Two types of update) have been issued. In addition, there is a trader who distributes a 1 km mesh (predicted up to 1 hour in 10 minute units, updated 144 times a day) pinpoint weather forecast. In the first embodiment, a case where the pinpoint weather forecast area is distributed with a 1 km mesh will be described as an example.

  It should be noted that the mesh size of the pinpoint weather forecast area is not limited to 1 km, and it goes without saying that if there is pinpoint area information such as a 0.5 km mesh, that information may be used. Also, for example, pinpoint weather forecasts within 1 hour use information of 1 km mesh, for example, pinpoint weather forecasts from 1 hour to the next day use information of 5 km mesh, Needless to say, a power supply request may be formulated. Furthermore, it is obvious that the same effect can be obtained by using a fine mesh pinpoint weather forecast in urban areas where the population is concentrated and using a coarse mesh pinpoint weather forecast in rural areas where the population density is low. .

  In FIG. 1, an area surrounded by a thick solid line indicates a mesh area. The mesh area is configured by collecting one or more adjacent pinpoint areas. In this Embodiment 1, the example at the time of selecting a mesh area so that the number of households of an adjacent mesh area will become substantially the same is shown. Therefore, in the first embodiment, three pinpoint weather forecasts are set as one mesh area in the central part of the city A where the population is concentrated, and seven pinpoint weather forecast areas in FIG. Was defined as one mesh area.

  In the first embodiment, the mesh area is defined so that the number of households is substantially the same when selecting the mesh area, but the present invention is not limited to this. For example, the mesh area may be selected so that the total amount of power usage based on a contract regarding the power usage amount in the mesh area (usage contract power amount) is substantially the same. Needless to say, the mesh area may be selected so that the population in the mesh area is substantially the same. Furthermore, if there are large-scale customers such as company factories or office buildings in the mesh area, when selecting the mesh area, the mesh area may be selected excluding the large-volume customers. Not too long. In addition, when comprising a mesh area except a large-volume consumer, it cannot be overemphasized that one large-volume consumer removed or it collects and handles as an independent mesh area. In the first embodiment, in order to make a power generation plan review decision easily when formulating a power generation plan, which will be described later, as described above, it is based on a contract regarding the total number of households or power consumption (contracted power consumption). Although the mesh area is selected based on the total amount of electric power used or the population, the present invention is not limited to this, and the mesh area may be selected without particularly considering the total number of households.

FIG. 2 is a configuration diagram showing the entire system power management system according to Embodiment 1 of the present invention.
In FIG. 2, reference numeral 1 denotes a backbone network that connects a power management server 2, a power plant 3, and a mesh area management server 4 described later. Reference numeral 5 denotes a mesh network that connects the customer 6 and the mesh area management server 4 to each other.

  Here, the power management server 2 creates a power generation plan based on the power supply request notified from each mesh area management server 4, notifies the power generation plan to each power plant 3, and notifies each mesh area management server 4. The power generation plan is reviewed by comparing the total power supply amount in the mesh area managed by itself based on the power supply amount in each mesh area and the power generation amount based on the power generation plan, and for each mesh area management server 4 Create and notify energy saving requests and targets. Further, each power plant 3 supplies power in the system based on the power generation plan notified from the power management server 2.

  Each mesh area management server 4 manages each customer 6 included in one or a plurality of mesh areas. For example, one mesh area management server 4 manages each customer 6 connected by the mesh network 5 deployed in the mesh area A and is connected by the mesh network 5 deployed in the mesh area B. Each customer 6 is managed. And each of these mesh area management servers 4 is based on the power allocation amount notified from the power management server 2, the power generation amount information in each mesh area, and the power consumption information of the home appliances. When the total supply power amount exceeds the power allocation amount instructed in advance by the power management server 2 based on the calculation result, each of the mesh areas A to Z is calculated. Notify customers of energy-saving requirements and targets.

FIG. 3 is a block diagram illustrating an example of a connection configuration of each customer's home device.
In FIG. 3, 11 is a solar panel, 12 is a power conditioner that boosts DC power generated by the solar panel 11 to a predetermined voltage, 13 is DC power output from the power conditioner 12, or both A storage battery that stores the output power of one or both of the DC power supplied from the DC-AC converter 15 and discharges the stored power based on a command from the charge / discharge control circuit 14. A charge / discharge control circuit that controls charging of the surplus power generated by the solar panel 11 based on the command of 17 to the storage battery 13, charging of the commercial power supplied from the commercial power supply 18 to the storage battery 13, and discharging from the storage battery 13. , 15 from the power conditioner 12 or the charge / discharge control circuit 14 based on the command of the smart meter 17. Bi-directional DC-AC converter that converts supplied DC power into AC power and supplies it to the home lamp line 20 or converts AC power supplied from the commercial power supply 18 into DC power and supplies it to the charge / discharge control circuit 14 , 16 is a voltmeter that measures the voltage of the DC power supplied from the power conditioner 12 or the charge / discharge control circuit 14.

  The smart meter 17 switches the control command (charge / discharge command) of the charge / discharge control circuit 14 and the power supply direction of the bidirectional DC-AC converter 15 (power supply from the commercial power supply 18 and the power conditioner 12 or charge / discharge control). (Switching of power supply from the circuit 14) is controlled, and power consumption, setting information, and the like of the home device connected to the home power line 20 are collected via the home device network 21. In addition, the smart meter 17 communicates with the mesh area management server 4 via the mesh communication I / F 19, the amount of power supplied from the commercial power supply 18, and the surplus power from the solar panel 11 to the system power supply. It also manages the supply amount. Furthermore, the smart meter 17 determines whether there is surplus power generated by the solar panel 11 based on the output voltage of the voltmeter 16.

  18 is a commercial power source, 19 is a mesh communication I / F circuit that is connected to the mesh network 5 and mediates communication between the smart meter 17 and the mesh area management server 4, 20 is a home power line, 21 is a home device network, and 22a to 22x Is an air conditioner installed in each room in the home, 23a to 23y are liquid crystal TVs, 24a to 24z are lighting devices, 25 is a refrigerator, 30a to 30x are communication interfaces with the home device network 21 built in the air conditioners 22a to 22x, 31a to 31y are communication interfaces with the home appliance network 21 built in the liquid crystal TVs 23a to 23y, 32a to 32z are communication interfaces with the home appliance network 21 built into the lights 24a to 24z, and 33 is built into the refrigerator 25. Communication interface with home device network 21 It is.

FIG. 4 is a block diagram showing an example of the internal configuration of the smart meter.
In FIG. 4, 40 is a CPU bus, 41 is a CPU that controls the smart meter 17, and 42 is a ROM that contains a program executed by the CPU 41. In the first embodiment, the ROM 42 is constituted by a flash ROM, which is used for communication information such as the IP address and MAC address of the smart meter 17, the IP address and MAC address of the mesh area management server 4, and device authentication. Key information at the time of encryption, contract power consumption information, various database information (details will be described later), and the like are stored.

  Reference numeral 43 denotes a RAM. The RAM 43 is used as a work area when the CPU 41 executes a program, and each home device information (power consumption information and control information) connected to the home power line 20 and the solar panel 11 The power generation amount, the amount of power stored in the storage battery 13, the power allocation amount information notified from the power management server 2, and the like are stored. 44 is a communication interface with a home device connected to the home device network 21, 45 is an operation state / power consumption output from the home device connected to the home, a power generation amount in the solar panel 11, a power storage of the storage battery 13 This is a display that visually displays the amount, the amount of power purchased from the commercial power supply 18 (or the amount of power sold), and the like. The display unit 45 also displays a graphic user interface screen for controlling each home device connected to the home device network 21.

46 is a power consumption monitoring circuit for monitoring the amount of power supplied to the residential power line 20 (amount of power purchased), the amount of surplus power supplied to the commercial power source 18 (amount of power sold), and 47 is the amount of power generated by the solar panel 11. The power generation amount monitoring circuit to be monitored 48 monitors the amount of electricity stored in the storage battery 13, the amount of power generated by the solar panel 11, the amount of power consumed by in-home equipment, and the time (midnight power). 13 is a power storage amount monitoring circuit that outputs a charge command to the battery 13 and a discharge command from the storage battery 13, and 49 is a power consumption monitor that monitors the total power consumption based on the power consumption of each home device notified via the home device network 21. Based on the voltage information output from the voltmeter 16, the monitoring circuit 50 determines the power supply direction (sale or purchase) of the bidirectional DC-AC converter 15 and supplies power to the bidirectional DC-AC converter 15. Give direction command A DC voltage monitoring circuit 51 for controlling the device by causing the display 45 to display an operation panel of the home device to be controlled based on the device information / control information of the home device notified via the home device network 21. It is a device control circuit.
Then, the home device control circuit 51 calculates a device setting value based on the energy saving request / energy saving target information notified from the mesh area management server 4 via the mesh communication I / F 19, and for each target home device. The device setting value information is output via the communication I / F 44.

FIG. 5 is a block diagram illustrating an example of the internal configuration of the mesh area management server.
In FIG. 5, 60 is a CPU bus, and 61 is a CPU that controls the mesh area management server 4. Reference numeral 62 denotes a ROM containing a program executed by the CPU 61. In the first embodiment, the ROM 62 is composed of a flash ROM or a hard disk drive. In the ROM 62, the IP address and MAC address of the mesh area management server 4 itself, the IP address in each customer connected to the mesh network 5, the MAC address, the contract power consumption, the presence / absence of distributed power supply facilities, the distributed power supply Equipment configuration / specification, encryption key information used for device authentication, contract power consumption information, various database information (details will be described later), power management server 2 connected via backbone network 1 IP address, MAC address, etc. are stored.

  Reference numeral 63 denotes a RAM. The RAM 63 is used as a work area when the CPU 61 executes a program, and the amount of power consumption notified by each consumer, the amount of power generated by the solar panel 11, and stored in the storage battery 13. And the power allocation amount information notified from the power management server 2 are stored. Reference numeral 64 denotes a communication interface with the power management server 2 connected to the backbone network 1, and reference numeral 65 denotes an interface with the customer's smart meter 17 connected to the mesh network 5.

Reference numeral 66 denotes a power supply request formulation circuit. The power supply request formulation circuit 66 includes total power consumption information output from a total power consumption calculation circuit 67, a total power generation amount calculation circuit 68, and a total power storage amount calculation circuit 69, which will be described later. Based on the total power generation amount information and the total discharge amount information, the total supply power amount required in each mesh area to be managed is calculated, and the power supply to be notified to the power management server 2 based on the calculation result Develop requirements.
Reference numeral 67 denotes a total power consumption calculation circuit that calculates the total power consumption consumed in each mesh area to be managed based on the power consumption information notified from the consumer. Reference numeral 68 denotes a total power generation amount calculation circuit that calculates the total power generation amount generated in each mesh area to be managed based on the power generation amount information notified from the consumer. Reference numeral 69 denotes a total storage amount calculation circuit that calculates the total storage amount stored in each mesh area to be managed based on the storage amount information notified from the customer and also calculates the total discharge amount from the storage battery 13. is there.

  Reference numeral 70 denotes an in-mesh power consumption monitoring circuit. The in-mesh power consumption monitoring circuit 70 includes a total power consumption output from the total power consumption calculation circuit 67, a total power generation output from the total power generation calculation circuit 68, and a total power output. Based on the total discharge amount from the storage battery 13 output from the storage amount calculation circuit 69, the total supply power amount necessary for each mesh area to be managed is calculated, and the calculation result and the power notified beforehand from the power management server 2 are calculated. The allocated amount is compared, and it is monitored whether or not the amount of power supplied from the power plant 3 to each mesh area to be managed is substantially coincident with a predetermined plan value (power allocated amount). Reference numeral 71 denotes a database in which the contracted power usage amount that each customer included in each mesh area to be managed contracts with the power company is registered.

  Reference numeral 72 denotes an in-mesh energy saving requirement / target formulation circuit. The mesh energy saving requirement / target formulation circuit 72 predetermines the total power supply in the mesh area as a result of power monitoring by the in-mesh power consumption monitoring circuit 70. If the power allocation amount exceeds the specified amount, or when the energy management request / energy saving target is notified from the power management server 2, a request notification requesting energy saving is sent to each customer included in each mesh area. In addition to creating, formulate energy-saving power, which is the energy-saving target at that time.

FIG. 6 is a block diagram showing an example of the internal configuration of the power management server 2.
In FIG. 6, 80 is a CPU bus, 81 is a CPU that controls the power management server 2, and 82 is a ROM that contains a program executed by the CPU 81. In the first embodiment, the ROM 82 is configured by a flash ROM or a hard disk drive, and the IP address and MAC address of the power management server 2 itself, the IP address of each device connected to the backbone network 1, MAC address information, Stores the total information of the contracted electric energy consumed by the customers in the mesh area.

  Reference numeral 83 denotes a RAM. This RAM 83 is used as a work area when the CPU 81 executes a program, and also notifies the supply power request for each mesh area to be managed and notified from each mesh area management server 4, and within each mesh area. Total power consumption, total power generation, total power storage, etc. are stored. Reference numeral 84 denotes a communication interface with each device connected to the backbone network 1. Reference numeral 86 denotes a peak power monitoring circuit. The peak power monitoring circuit 86 needs to be supplied from the power plant 3 based on the total power consumption information, the total power generation amount information, and the total discharge amount information notified from each mesh area management server 4. The total amount of power supplied is calculated, and the calculation result is compared with the current total power generation amount of the power plant 3 to monitor whether the total amount of power supplied in each mesh area exceeds the total power generation amount. .

  85 is a power generation plan formulation circuit, and this power generation plan formulation circuit 85 is based on the power supply request notification information notified from each mesh area management server 4 and the peak power monitoring information output from the peak power monitoring circuit 86. Develop a power generation plan to be notified to 3. Reference numeral 87 denotes an energy saving request / target formulation circuit. The energy saving requirement / target formulation circuit 87 is configured to store each mesh area when the peak power monitoring circuit 86 determines that the total power supply amount in each mesh area exceeds the total power generation amount. Energy saving target values are calculated, and energy saving requests and energy saving targets to be notified to each mesh area management server 4 are formulated.

  In the first embodiment, in order to make the explanation easy to understand, the power generation amount monitoring circuit 47, the storage amount monitoring circuit 48, the power consumption monitoring circuit 49, the DC voltage monitoring circuit 50, and the home appliance control constituting the smart meter 17 are described. Circuit 51, power supply request formulation circuit 66 constituting mesh area management server 4, total power consumption calculation circuit 67, total power generation amount calculation circuit 68, total power storage amount calculation circuit 69, in-mesh power consumption monitoring circuit 70, contract power use An energy database circuit 71, an in-mesh energy saving requirement / target formulation circuit 72, a power consumption prediction database 73, a power generation plan formulation circuit 85, a peak power monitoring circuit 86, and an energy saving requirement / target formulation circuit 87 constituting the power management server 2. However, the present invention is not limited to this, and all of the above circuits or a part of the circuits are not limited thereto. Or realized by S / W a, or that the function of each circuit described above may implement the same function is divided into S / W and H / W course.

  The power storage means in the claims corresponds to the storage battery 13, the storage amount management means corresponds to the home charge / discharge control circuit 14 and the smart meter 17, and the discharge request generation means corresponds to the smart meter 17. Further, the power amount measurement notification means in the claims is the smart meter 17, the power amount control means, the total supply power calculation means, the normalization means, the comparison means, and the count means are the power consumption monitoring in the mesh of the mesh area management server 4. In the circuit 70, the energy saving request notification means corresponds to the CPU 61 and the mesh communication I / F 65, and the threshold value setting means corresponds to the in-mesh energy saving request / target formulation circuit 72. Further, in the claims, the mesh area power management means is the mesh area management server 4, the power management means is the power management server 2, the power generation plan formulation means is the power generation plan formulation circuit 85, and the mesh area energy saving request notification means is the backbone. In the communication I / F 84 and the power generation plan formulation circuit 85, the mesh area total supply power calculation means is in the peak power monitoring circuit 86, the mesh area energy saving target creation means, the mesh area normalization means, the mesh area comparison means, and the mesh area count means. The mesh area threshold value setting means corresponds to the energy saving requirement / target formulation circuit 87, and the energy saving target creation means corresponds to the energy saving requirement / target formulation circuit 87.

  Next, a specific operation of the system power management system of the first embodiment will be described. In the following description, the symbol S means each processing step.

First, the operation | movement of the smart meter 17 in a consumer's house is demonstrated using FIG.3, FIG.4, FIG.7-10.
FIG. 7 is a control flow showing a control process of customer home equipment centered on the smart meter 17. In FIG. 7, when the smart meter 17 is activated, registration of each device arranged in the house, confirmation of registered facilities, and initialization are performed (S1).
Specifically, authentication of each home device connected to the home device network 21 shown in FIG. 3 is performed via the home device network 21 based on the information stored in the ROM 42 shown in FIG. At that time, individual specifications (such as power generation capacity and supply power supply voltage) of home devices, an energy saving database, and an energy saving priority table are also expanded in the RAM 43. In S <b> 1, initialization of the power conditioner 12, the charge / discharge control circuit 14, and the bidirectional DC-AC converter 15 that are the distributed power supply system is also performed.

  When the initialization of the distributed power supply system is completed in S1, the smart meter 17 starts power generation by the distributed power supply (S2). Specifically, the power conditioner 12 is activated and power generation by the solar panel 11 is started. When power generation by the solar panel 11 is started, the smart meter 17 checks the output of the voltmeter 16 with the DC voltage monitoring circuit 50 and checks whether there is surplus power (S3). If there is no surplus power, power purchase is started from the commercial power supply 18 (S5). On the other hand, if there is surplus power, an instruction to sell power to the commercial power supply 18 is issued and power selling is started (S4). The amount of power purchased from the commercial power source 18 and the amount of power sold from the solar panel 11 are monitored by the power usage monitoring circuit 46.

The smart meter 17 implements information on devices connected to the home device network 21 via the communication I / F 44 (S6). Specifically, a power generation amount confirmation request packet is output via the communication I / F 44 so as to notify the power conditioner 12 of the power generation amount in the solar panel 11. When the power conditioner 12 receives the power generation amount confirmation request packet, the power conditioner 12 notifies the smart meter 17 of the current power generation amount of the solar panel 11 on the response packet. When the smart meter 17 receives the response packet via the communication I / F 44, the smart meter 17 raises an interrupt flag to notify the CPU 41 that the packet has been received. When the CPU 41 receives the packet, it analyzes the contents of the packet, and if it determines that the power generation amount notification by the solar panel 11 is a result of the analysis, notifies the power generation amount monitoring circuit 47. The power generation amount monitoring circuit 47 creates a database related to the power generation amount based on the notified time and power generation amount based on the power generation amount information. Further, the obtained power generation amount data is processed so as to be easily seen by consumers, and is output to the display unit 45 via the CPU 41.
In the first embodiment, the smart meter 17 constructs a database related to the power generation capability of the solar panel 11 that it manages. At that time, a database may be formed together with the weather information based on the pinpoint weather forecast information used in the mesh area management server 4.

  Similarly, the smart meter 17 outputs a charge amount confirmation request packet to notify the charge / discharge control circuit 14 of the charge amount of the storage battery 13 via the communication I / F 44. When the charge / discharge control circuit 14 receives the storage amount confirmation request packet, the charge / discharge control circuit 14 notifies the smart meter 17 of the current storage amount of the storage battery 13 on the response packet. When the smart meter 17 receives the response packet via the communication I / F 44, the smart meter 17 raises an interrupt flag to notify the CPU 41 that the packet has been received. When the packet is received, the CPU 41 analyzes the contents of the packet. If the result of the analysis is a notification of the charged amount of the storage battery 13, the CPU 41 notifies the charged amount monitoring circuit 48.

  The storage amount monitoring circuit 48 displays the storage amount information on the display unit 45 so that a consumer (user) can check it. In addition, for each home device connected on the home device network 21, the current home device information (operation mode for air conditioner, set temperature, outside temperature / humidity information, room temperature information, consumption for LCD TV) Power, screen brightness information, power consumption in the case of lighting, brightness information, power consumption in the case of refrigerator, temperature in the cabinet, ambient temperature information, etc.) to notify the air conditioners 22a-22x, liquid crystal TVs 23a-23y, lighting When a confirmation request packet is notified to the refrigerator 25a to 24z and a response packet is received from each home device, the received data is notified to the power consumption monitoring circuit 49 via the CPU 41.

The power consumption monitoring circuit 49 creates a database related to power consumption based on the notified time, outside temperature / humidity, and ambient temperature information of the power consumption information notified from each home device and the control information of each device. The acquired power consumption data and home appliance setting information are processed so that the consumer can easily see them, and each device or total power consumption is output to the display 45 via the CPU 41.
In the first embodiment, the smart meter 17 constructs a database related to the power consumption amount of the home device managed by the smart meter 17 in order to predict the energy saving amount. The smart meter 17 confirms whether the request command from the mesh area management server 4 has been received (S7). If the request command has not been received, the smart meter 17 returns to S3 and executes the control flow again. On the other hand, when a request command is received, processing corresponding to the request command of the mesh area management server 4 is performed (S8).

  Next, the processing operation when the smart meter 17 receives a request command notification from the mesh area management server 4 will be described with reference to the control flow of FIG.

  When the mesh area management server request command process is started, the CPU 41 confirms whether the request command input via the mesh communication I / F 19 is a request for notification of power generation amount, power storage amount, and power consumption information (S21). . If the notification request is received, predetermined information is collected from the power generation amount monitoring circuit 47, the storage amount monitoring circuit 48, the power consumption monitoring circuit 49, and the power usage amount monitoring circuit 46 to generate a response packet (S22). .

  FIG. 20 is an explanatory diagram showing an example of a format of a response packet from the smart meter 17 to the mesh area management server 4. Note that header information defined by a communication standard such as IEEE 802.3 such as a MAC header or TCP / IP is not described in the first embodiment and is omitted.

In FIG. 20, the response packet is prefixed with the pinpoint weather forecast area number and then the customer number. The mesh area management server 4 determines a consumer based on this information and uses the above information when updating each database in the mesh area management server 4. Following the customer number, a presence / absence flag of a distributed power source (solar power generation facility, wind power generation facility, fuel cell, etc.) is arranged. If there is a distributed power source, the amount of power generated by the distributed power source is added. This data is not sent if there is no distributed power supply. Following the amount of power generated by the distributed power supply, in the first embodiment, an outside air temperature and a storage battery presence / absence flag are arranged. In the case of having a storage battery, the number of storage batteries to be managed is added, and thereafter, storage information of all the storage batteries to be managed is added. As shown in the figure, the storage battery information notifies the amount of power stored in the storage battery following the EV flag indicating whether the vehicle is an electric vehicle (EV). Following the storage information of the storage battery, the power consumption information of the home appliance is notified. In the figure, one example of notification information related to an air conditioner is shown. In the first embodiment, following the home device ID information assigned to the home device, a flag for identifying the air conditioner (in the first embodiment, the dehumidifier is also included in the air conditioner), the consumption of the device Add power. When the air-conditioning equipment flag is 1, the time when the user turns on the air-conditioning equipment, the time when the air-conditioning equipment is turned on (if not, the current time is entered), the device setting information, and the room temperature at the start of air-conditioning equipment use , Send humidity information, outside temperature and humidity at the end.
In the figure, as the power consumption information of other home devices, the sum of power consumption by devices that can be hand-carried, such as a shave and a dryer, and that does not have a communication function with the home device network 21 is sent. . The smart meter 17 collects predetermined information from the power generation amount monitoring circuit 47, the storage amount monitoring circuit 48, the power consumption monitoring circuit 49, and the power usage amount monitoring circuit 46, generates the response packet, and sends it to the mesh area management server 4. Notice.

Returning to FIG. 8, if it is not a power generation amount / power storage amount / power consumption information notification request in S <b> 21, the smart meter 17 checks whether the notification information is a power amount allocation notification (S <b> 23). If it is a power amount allocation notification, the information is stored in the RAM 43 (S24). On the other hand, if it is not the power amount allocation notification in the previous S23, it is confirmed whether it is an energy saving request / target notification (S25). In the case of the energy saving request / target notification, the CPU 41 sets both the priority number # for each home device and the power consumption reduction predicted value ΔPd indicating the energy saving power amount predicted by each customer to “0” (S26). .
The priority number # is a number in which the priority order for each home device when the customer who has received the energy saving notification performs the energy saving is set in advance. Here, a home device with a lower priority number # is used for energy saving. The priority is high.

  Next, it is confirmed whether the home device is registered in the priority table as an energy saving target device (S27). FIG. 9 shows an example of a priority table of home appliances that are energy saving targets. In FIG. 9, the home device ID is normally registered, but here, for the sake of easy understanding, it is represented as an air conditioner A or the like.

If the home device is registered as an energy saving target device, the control state of the home device (operation mode, set temperature, outside temperature information, etc. in the case of stopping, operating, air conditioner, etc.) is confirmed in S28. After checking the control state, the control value of the home device is determined (S29).
Hereinafter, the control method in Embodiment 1 will be described by taking the case of the air conditioner A22a as an example.
In the first embodiment, when there is an energy saving request from a consumer (user) in advance, the smart meter 17 is set how many times the set temperature of the air conditioner A22a is changed (for example, the installation temperature of 2 ° C. is set). Lower / up). Needless to say, the change width of the set temperature may be set to change based on information such as the outside air temperature, room temperature, and humidity. Needless to say, control such as lowering / raising the installation temperature by 1 ° C. with respect to the current room temperature may be performed to ensure energy saving.

After determining the control value (set temperature in the case of an air conditioner) in S29, the smart meter 17 notifies the control value to the air conditioner A 22a (S30). Receiving this control value, the air conditioner A22a performs temperature adjustment such as lowering / raising the set temperature.
On the other hand, when the CPU 41 in the smart meter 17 completes the notification of the control value in the previous S30, the CPU 41 calculates the power consumption reduction amount Pd of each home appliance associated with the control value change (S31).
Specifically, as shown in FIG. 10, the operation mode, the outside air temperature, the set temperature, and the power consumption reduction amount associated with the change in the set temperature are stored in a database, and the power consumption is calculated from the outside air temperature and the set temperature obtained from the air conditioner A22a. Ask for. The figure shows an energy saving database of the liquid crystal TV. In the case of a liquid crystal TV, energy is saved by changing the setting of the backlight luminance. In addition, although not shown, in the case of a lighting device, energy is saved by changing the brightness.

When the calculation of the power consumption reduction amount Pd of the customer's home device is completed in S31, the CPU 41 calculates the power consumption reduction predicted value ΔPd in the consumer based on the following equation (1) (S32).
ΔPd = ΔPd + Pd (1)
Next, the priority number # is incremented (# = # + 1) (S33). Then, it is checked whether or not the power consumption reduction predicted value ΔPd exceeds a preset energy saving target value (S34), and if it does not exceed the energy saving target value, a series of processing from S27 is performed again. . Therefore, the power consumption reduction predicted value ΔPd increases sequentially until all the setting changes for energy saving are performed on the in-home devices that are the targets of energy saving. When the power consumption reduction predicted value ΔPd exceeds the energy saving target value in S34, the CPU 41 determines that the energy saving target can be achieved and notifies the mesh area management server 4 of the power consumption reduction predicted value ΔPd (S39). The mesh area management server request command response process is terminated.

On the other hand, if the energy saving target cannot be cleared despite all the setting changes for energy saving being performed on the registered in-house devices that are targeted for energy saving (S40), it is confirmed whether or not electric power is stored in the storage battery 13 (S35). In addition, even if the in-home device is not registered in the priority table as an energy saving target device in S27, it is confirmed whether or not electric power is stored in the storage battery 13 (S35).
At this time, when power is stored in the storage battery 13, the CPU 41 confirms with the charge / discharge control circuit 14 via the communication I / F 44 whether the storage battery 13 can be discharged. As a result of the confirmation, if the discharge is impossible, the energy saving target cannot be cleared, but the predicted power consumption reduction value ΔPd is notified to the mesh area management server 4 and the mesh area management server request command response process is terminated (S39).
On the other hand, if discharge is possible, the discharge power Pden from the storage battery 13 is calculated (S37), and the predicted power consumption reduction value ΔPd is calculated as ΔPd = ΔPd + Pden (S38). After calculating the power consumption reduction predicted value ΔPd in S38, even if the energy saving target cannot be cleared, the power consumption reduction predicted value ΔPd is notified to the mesh area management server 4, and the mesh area management server request command response process is terminated (S39). ).

  Next, the operation of the mesh area management server 4 will be described with reference to FIGS. 5 and 11 to 20.

FIG. 11 is a control flow showing the overall processing of the mesh area management server 4.
In FIG. 11, when the mesh area management server 4 is activated, the CPU 61 registers customers who are arranged in the mesh network 5 and various facilities (distributed power supply, storage battery, smart meter, home device) possessed by each customer. Confirm (S101).
Specifically, based on the information stored in the ROM 62 shown in FIG. 5, authentication is performed for the smart meter 17 possessed by each customer connected to the mesh network 5 shown in FIG. At that time, the contract power usage database 71, the power consumption prediction, and the like, each device specification (power generation capacity, power consumption, etc.) in the consumer, a database on the contract power usage contracted with the power company of each consumer, etc. Register in the database 73.
When the registration of equipment information of each customer in various database circuits in S101 and the device authentication of the smart meter 17 are completed, the CPU 61 is newly notified of registration / deletion information from the customer in the mesh area. It is confirmed whether there is any (S102). When a registration deletion request is newly input from a consumer, various databases are registered or deleted (S103). In addition, when registering the database, it is also assumed that the device specifications, number, and home appliance information regarding the power generation / storage that the consumer has are also registered.

When there is no request for new registration / deletion of a customer in the mesh area in S102, or when registration or deletion of various databases is completed in S103, the power consumption, power generation amount, and storage battery 13 of the customer in the mesh area are The amount of discharge is acquired (S104).
Specifically, when the mesh area management server 4 sends a request packet to notify the smart meter 17 installed in the consumer of the power generation amount / power consumption amount / discharge amount of the storage battery 13, the smart meter 17 As described above, the power generation amount, the power consumption amount, and the discharge amount are sucked up from each device connected to the home device network 21, and the packet shown in FIG. 20 is generated and notified to the mesh area management server 4. Note that the details of the notification packet shown in FIG. In the first embodiment, the amount of discharge from the storage battery 13 is notified together with the amount of power generation.

In the first embodiment, when the charge amount information is received from each consumer as shown in FIG. 20, whether the stored power is stored in the battery of the electric vehicle or the normal storage battery 13 (of the electric vehicle It is managed separately whether it is stored in other than the battery.
The reason is that when the peak power is used, the customer who has the storage battery 13 is notified of the discharge request, but when the storage battery 13 is an electric vehicle, the user uses the car or is scheduled to use it after several hours. In such a case, there is a case where the user cannot use the car later when discharging from the car. Therefore, in this Embodiment 1, when managing the amount of electricity stored, the amount of power that can be reliably discharged by managing the amount of electricity stored separately for the electric vehicle and the normal storage battery 13 (other than the battery of the electric vehicle). There is an effect that can be managed.
Needless to say, when peak power is used, it may be controlled to issue a discharge request to the battery of the electric vehicle and supply power to the system. In that case, if it is configured to control the smart meter 17 in the form of obtaining the permission of the consumer (user), there is an effect that a case in which the user who will use the electric vehicle in the future cannot be used does not occur. .
In addition, with respect to the discharge from the battery of the electric vehicle, for example, by setting a limit in advance, for example, up to 30% of the amount of stored electricity, the user can move the electric vehicle even when using the vehicle urgently. is there. Needless to say, in order to promote the discharge from the storage battery 13, the user who has performed the discharge may be controlled so as to have a merit such as a reduction in the specification fee of the electric charge.

Then, based on the power consumption, power generation, and discharge obtained from each customer in the mesh area in S104, the total power consumption, total power generation, and total discharge in the mesh area are calculated, From these total power consumption, total power generation, and total discharge, the total power supply to the mesh area is calculated by the following equation (2) (S105).
Total power supply amount = total power consumption amount-total power generation amount-total discharge amount (2)
Then, it is determined whether or not the total amount of power supplied to the mesh area is larger than a preset power allocation amount (S106). If it is larger, it is necessary to perform energy saving. (S107). Next, the mesh area management server 4 formulates and notifies an energy saving request and an energy saving target value so as to reduce power consumption to each consumer (S108).

12 and 13 are control flows showing details of the energy saving request / target formulation / notification processing of S107 in FIG.
12 and 13, when the creation of the energy saving request / target notification is started, the in-mesh energy saving request / target formulation circuit 72 reads the customer number #, the normalized power supply amount, the category number [Cnt_Cat ¥]. Are initialized (S151).

  Here, customer number # is a number assigned to identify each customer. In addition, the count value [Sl $ _cnt] is a demand having a power supply amount equal to or greater than each threshold $ with respect to a plurality of thresholds $ assigned in stages to the power supply amount of the consumer as will be described later. It is used to count how many houses exist. For example, if the number of thresholds $ is assigned to n stages from 1 to n in advance, n is corresponding to this number. A dedicated counter is prepared. In addition, the category number [Cnt_Cat ¥] (¥ = 1 to n) is attributed to the power supply amount of each consumer between which (in which range) each threshold $ allocated stepwise as described above. It is for clarifying.

When each initialization is completed in S151, the amount of power supplied to the customer corresponding to the customer number # (initially # = 0) is calculated (S152). The supplied power amount is calculated based on the power consumption information, the power generation amount information from the consumer, and the discharge amount information from the storage battery 13 sent in the packet format shown in FIG. In particular,
Power supply amount = (power consumption amount of customer number # −power generation amount of customer number # −discharge amount from storage battery 13 of customer number #)
Is obtained by calculating. When this calculation is completed, the in-mesh energy saving request / target formulation circuit 72 supplies the power supplied to the customer corresponding to each customer number # from the contract power consumption database circuit 71 via the in-mesh power consumption monitoring circuit 70. A normalization coefficient for normalizing the quantity is acquired (S153).

  Next, the normalization coefficient according to the first embodiment will be described with reference to FIGS. 14 and 15. FIG. 14 shows the relationship between the normalization coefficient and the contract power consumption. In the first embodiment, the normalization coefficient is determined with the contract power consumption of 100 KW being “1”. For example, a customer who has contracted 500 KW has a normalization factor of 5, and when the actual power consumption is 10 KW, the normalized supply power amount is 10 KW / 5 = 2 KW. FIG. 15 shows an example of a table of normalization coefficients given to each consumer, reflecting the normalization coefficient corresponding to the contract power consumption shown in FIG.

  When the acquisition of the normalization coefficient of the consumer is completed in the previous S153, the in-mesh energy saving request / target formulation circuit 72 confirms whether the consumer owns the power generation facility using natural energy (S154). If the facility is owned, weather forecast information (or weather information) is acquired (S155). After completing the acquisition of the weather forecast information, the in-mesh energy saving request / target formulation circuit 72 corrects the normalization coefficient corresponding to the customer number # (S156).

Specifically, in the first embodiment, the amount of power generated by a consumer who has power generation facilities using natural energy varies greatly depending on the weather. Further, when determining the contracted power consumption, the consumer concludes a basic contract in consideration of the amount of power generated by natural energy. Therefore, when the weather is bad and the amount of power generated by natural energy is small, if an energy saving request is made based on the contracted power consumption that the customer has connected to, the amount of power that the customer originally needs cannot be secured. Even if notified, energy saving cannot be performed. For this reason, there is a possibility of erroneous selection of a threshold value that can clear the energy saving target. In the first embodiment, in order to solve the above problem, for a customer having a power generation facility using natural energy, the contracted power consumption is corrected based on the weather forecast information, and the normalization coefficient is calculated. Constitute. The contract power consumption correction is calculated based on the following equation (3), for example.
Contract power consumption (correction value) = Contract power consumption (before correction) + Power generation capacity of power generation facilities x Weather coefficient (3)

Next, equation (3) will be described.
FIG. 16 shows an example of the relationship between the weather forecast information and the weather coefficient used when calculating the contracted power consumption (correction value) for a consumer having a photovoltaic power generation facility. In calculating the contract power consumption (correction value), the amount of sunlight is determined from the weather forecast information. In the first embodiment, the table shown in FIG. 16 is determined in advance, and from the weather coefficient, the amount of power that does not satisfy the power generation amount that would have been generated in a sunny weather is calculated. Note that the power generation capacity of the power generation facility in the formula (3) is a database of the power generation amount under each weather condition in the customer's house, and the result is notified from the smart meter 17 to the mesh area management server 4. Then, based on the contract use electric energy (correction value) calculated by the expression (3), the normalization coefficient corresponding to the customer number # is used as the relationship between the normalization coefficient and the contract use electric energy shown in FIG. To decide. Specifically, the contracted power consumption (correction value) obtained by Expression (3) is used, and the normalization coefficient is determined with reference to the table of FIG.

In S157, the in-mesh energy saving request / target formulation circuit 72 divides the supply power amount corresponding to the customer number # obtained in S152 by the normalization coefficient to calculate the normalized supply power amount. In the first embodiment, in order to reduce the circuit scale of the in-mesh energy saving requirement / target formulation circuit 72 or the calculation load on the CPU 41, as shown in FIG. 14, a contract of 100 kW that minimizes this normalization coefficient. Is set to “1” and the normalization coefficient is determined to be an integer. As a result, when the normalized power supply amount is calculated, if the circuit is configured, it can be configured by a simple addition operation without using a general-purpose division circuit, so that the circuit scale can be reduced and high-speed operation can be performed. . In addition, even in the case of S / W, since it can be realized by a combination of bit shift calculation and addition calculation, there is an effect that the number of processing steps can be reduced (high speed).
In the first embodiment, the power supply amount corresponding to the customer number # is normalized in the in-mesh energy saving request / target formulation circuit 72. However, the normalization means is provided on the smart meter side and normalized. The supplied power amount may be notified to the mesh area management server 4. In this way, it is possible to reduce and minimize the processing load on the mesh area management server 4 side.

When the calculation of the normalized supply power amount in S157 is completed, the in-mesh energy saving request / target formulation circuit 72 determines that the normalized supply power amount corresponding to the customer number # (initially # = 1) is [ Check whether threshold 1] is exceeded. If it exceeds, “1” is added to the count value [Sl $ _cnt] for counting the number of customers exceeding the [threshold 1], and “1” is added to the category number [Cnt_Cat ¥] corresponding to the customer number #. Is set (S159). When the process of S159 is completed, the in-mesh energy saving request / target formulation circuit 72 subsequently checks whether or not the normalized power supply amount corresponding to the customer number # exceeds [Threshold 2] (S160). ), If it exceeds, “1” is added to the count value [Sl $ _cnt] for counting the number of consumers exceeding the [threshold 2], and the category number [Cnt_Cat ¥] corresponding to the customer number # is “ 2 "is set (S161).
The above operation is performed until “NO” in the conditional branch from S158 to S162, or until [threshold n] (n is an upper limit of preset thresholds) (S162, S163).
It is confirmed whether the control flow has been completed for all customers in the mesh area (S164). If not completed, the customer number # is incremented (# = # + 1) (S165), and S152 to S152. The process of S164 is carried out until it is completed for all customers in the mesh area.

  FIG. 17 shows an example of a threshold table that defines each threshold $ set for the normalized supply power amount. Here, [Threshold 0] from [Threshold 0], such as [Threshold 0] when the normalized power supply amount is 1 KW or less, and [Threshold 1] from 1 KW to 1.10 KW. N + 1 thresholds $ are specified. Note that the threshold table is not limited to that shown in FIG. 17, and may be set based on the operation results.

  In this way, when the processes of S158 to S165 described above are executed, the supply power amount normalized for each consumer is compared with each of the [threshold 0] to [threshold n] set in stages. Each time, the count value [Sl $ _cnt] ($ = 1 to n) corresponding to each [threshold 0] to [threshold n] is changed and normalized beyond each [threshold 0] to [threshold n]. Since the number of consumers having the power supply amount is sequentially counted, as a result, as shown in FIG. 31, for example, a histogram of the power supply amount corresponding to each count value [Sl $ _cnt] is created. . Further, for example, when the normalized power supply amount of a consumer exists between [threshold k] and [threshold k + 1], “k” is obtained as the category number [Cnt_Cat ¥] for the consumer. Will be.

  Specifically, for example, when the normalized supply power amount of each customer (customer number #: 000 to i) has each value as shown in FIG. 19, for example, [threshold 5] or more Since the number of consumers is “9”, the count value [Sl $ _cnt] = 9 at that time, and the number of consumers equal to or greater than [threshold n] is “1”, so the count value [Sl $ at that time _Cnt] = 1. In addition, since there are three customers who have a normalized power supply amount between [Threshold 1] and [Threshold 2], the customers (customer numbers # = 003, 012, 014) On the other hand, the category number [Cnt_Cat ¥] = 2 is given.

  As described above, when the confirmation is completed for all the consumers in S164, the in-mesh energy saving request / target formulation circuit 72 next selects the consumers belonging to the category to be energy saving and calculates the energy saving target. The threshold value SL is determined for this (S166). Hereinafter, a method for determining the threshold value SL will be described with reference to FIGS. 18, 19, and 31.

  FIG. 18 is a database used for predicting the energy saving power consumption (power consumption reduction amount) generated in each consumer as an energy saving target when each threshold value SL is set. Then, when determining the threshold value SL, the in-mesh energy saving request / target formulation circuit 72 calculates a predicted value of the energy saving power amount when the threshold value SL is set based on the database shown in FIG.

That is, in FIG. 18, when a certain threshold value SL is set, data indicating the energy-saving power amount that can be expected for a consumer having a normalized supply power amount equal to or higher than the threshold value SL is tabulated. Registered in advance.
For example, when [threshold value 1] is set as the threshold value SL, the value “AAA” in the figure indicates that the normalized power supply amount is one person belonging to the category of [threshold 1] or more and less than [threshold 2]. (That is, in the example shown in FIG. 19, a customer having a category number [Cnt_Cat ¥] = 2 corresponding to a portion surrounded by diagonal lines in the figure (customer number #: 003, 012, 014,...)). ) Shows the energy saving energy that can be expected.

  Therefore, in the database of FIG. 18, when [Threshold value 1] is selected as the threshold value SL, when the number of consumers belonging to the category of [Threshold 1] or more and less than [Threshold 2] is “N”, Since the energy-saving power amount per customer that can be expected from time to time is “AAA”, a reduction in power consumption (W) of N × AAA can be expected in total. Similarly, when [threshold value 1] is selected as the threshold value SL, the number of customers belonging to the category of [threshold M] and less than [threshold M + 1] is “S1M”, and one person who can be expected at that time If the energy saving power amount for the customer is “MMM”, the energy saving power amount that can be expected to be reduced is S1M × MMM in total.

  In this way, when [threshold value 1] is set as the threshold value SL, for example, the number of consumers belonging to each of the categories from [threshold 1] to [threshold n] is the customer number # and category number. As described above, the energy saving electric energy that can be expected to be reduced at each stage from [Threshold 1] to [Threshold n] is obtained using [Cnt_Cat ¥] with reference to [Cnt_Cat ¥]. If the energy-saving power amount corresponding to the number of consumers belonging to each category is calculated and all these energy-saving power amounts are added, one mesh is obtained when [Threshold value 1] is selected as the threshold value SL. All the energy savings that can be expected in the area.

The numerical values such as “AAA”, “BBB”,..., “YZZ” shown in FIG. 18 indicate the actual amount of energy saved by actually receiving the energy saving request and actually reducing the selected threshold value number. The average value is calculated, and the registered value currently registered and the data registered in the database with the current actual value are changed. For example, when [Threshold value 1] is selected as the threshold value SL and the average reduction value (actually measured value) of [Threshold 1] is “AAX”, in the first embodiment,
0.99 x AAA + 0.01 x AAX
Thus, data to be registered in the database is calculated, and the numerical value is stored in the database.
Moreover, since the energy saving target value shown in FIG. 18 is a numerical value obtained by dividing the energy saving power amount notified to each consumer by a normalization coefficient determined for each consumer, When notifying the house, the energy saving power amount is multiplied by a normalization coefficient to return to the actual energy saving target value and notifying the consumer. On the customer side, energy is saved based on this energy saving target value.

When the energy saving power amount (predicted value) is calculated in the above manner, the energy saving request / target formulation circuit 72 in the mesh calculates the energy saving power amount for this mesh area, the total power supply amount obtained by the above equation (2), and Based on the power allocation amount pre-allocated to the mesh area,
Total power supply-Energy saving power (predicted value) <Power allocation (or total contracted power consumption)
The maximum threshold value SL that satisfies the above is obtained. In the example shown in FIG. 31, a case where [threshold value 1] is set as the threshold value SL between the count value [Sl $ _cnt] = 1 and the count value [Sl $ _cnt] = 2 is shown. Therefore, in this case, all customers having a value equal to or greater than the count value [Sl $ _cnt] = 1 are targeted for energy saving. For example, if the energy saving target cannot be achieved even with [Threshold value 1], the threshold value SL is lowered by one step and changed to [Threshold value 0], and the same processing is performed.

  Returning to FIG. 12 and FIG. 13, when the setting of the threshold value SL is completed in the previous S166, the in-mesh energy saving request / target formulation circuit 72 sets the customer number # to the initial value “0” and each mesh A power consumption reduction predicted value ΔPower for obtaining an energy saving power amount predicted in the area is set to an initial value “0”. Further, the energy saving power integrated value ΔPW [Cnt_Cat ¥] (¥: 1) for each category required for updating the database shown in FIG. 18 (that is, the energy saving power amount in the consumer belonging to each category to be energy saving). ˜n) is set to an initial value “0” (S167).

  When the initialization is completed, the in-mesh energy saving request / target formulation circuit 72 checks whether or not the normalized supply power amount corresponding to the customer number # exceeds the threshold value SL (S168). If the supplied power amount exceeds the threshold value SL, an energy saving target value for each consumer is created (S169). Specifically, the energy saving target value is calculated by subtracting the electric energy of the threshold value SL from the normalized supplied electric energy and multiplying by the normalization coefficient. When the creation of the energy saving target value is completed in S169, the energy saving request / target is sent to the smart meter 17 in the customer's house (S170). Next, the in-mesh energy saving request / target formulation circuit 72 waits for reception of the predicted power consumption reduction value ΔPd from the consumer (S171).

Then, when the predicted power consumption reduction value ΔPd transmitted from the smart meter 17 of the customer is obtained by the process of S39 in FIG. 8, the in-mesh energy saving request / target formulation circuit 72 predicts the energy saving energy amount in the mesh area. Is calculated based on the following equation (4).
ΔPower = ΔPower + ΔPd (4)
Further, the energy saving power integrated value ΔPW [Cnt_Cat ¥] (¥ = 1 to n) for each category necessary for updating the database shown in FIG. 18 is calculated based on the following equation (5) ( S172).
ΔPW [Cnt_Cat ¥] = ΔPW [Cnt_Cat ¥] + ΔPd (5)

  Then, it is confirmed whether or not the energy saving request / target notification control flow is completed for all customers in the mesh area (S173). If not, the customer number # is incremented (# = # + 1). ) (S174), the control flow of S168 to S173 is executed until it is completed for all customers in the mesh area. If completed, subtract the power consumption reduction predicted value ΔPower for the mesh area obtained based on the above equation (4) from the total power supply in the mesh area obtained by the above equation (2). Thus, the amount of electric power (predicted value) to be supplied from the power plant 3 into each mesh area is changed (S175).

  In the first embodiment, in order to reduce peak power, when the amount of power supplied from the power plant 3 is insufficient for the storage battery 13 arranged in the customer's house, the mesh area management server 4 starts from the storage battery 13. The smart meter 17 is notified to discharge. When the smart meter 17 receives this notification, the smart meter 17 confirms the charged amount with respect to the charge / discharge control circuit 14 and, if discharge is possible, notifies the discharge start instruction and the discharged amount. When receiving an instruction from the smart meter 17, the charge / discharge control circuit 14 issues a discharge instruction to the storage battery 13 and starts discharging.

When the change of the amount of power to be supplied into the mesh area is completed in S175, the in-mesh energy saving request / target formulation circuit 72 sets the count value J for counting the number of consumers having the storage battery 13 to “0”, and The dischargeable amount ΔBTPpower for the mesh area is initialized to “0” (S176).
When the initialization is completed, it is confirmed whether an energy saving request notification from the power management server 2 has been received. If not received, the contents of the database shown in FIG. 18 are changed as described above, and the energy saving request / target formulation ends (S185).

On the other hand, if an energy saving request notification has been received from the power management server 2, the supplied power amount calculated in S175 is confirmed to check whether the energy saving target has been achieved (S178). If the energy saving target has been achieved, the flow of S185 is carried out, and the energy saving request / target formulation ends. On the other hand, if not achieved, a discharge request from the storage battery 13 is sent to a consumer having the storage battery 13 (S179). And it waits for the notification of the dischargeable amount PdenJ from a consumer (S180). When the dischargeable amount PdenJ from the customer J is obtained, the dischargeable amount ΔBTPPower for the mesh area is changed based on the following equation (6) (S181).
ΔBTPower = ΔBTPower + PdenJ (6)
Next, it is determined whether or not all consumers having the storage battery 13 in the mesh area have been confirmed (S182). If there is an unconfirmed consumer, the customer number J having the storage battery 13 is incremented (J = J + 1) (S183) and S179 to S182 are performed again.

If the confirmation has been completed for all the consumers in S182, the power consumption reduction predicted value ΔPower obtained by the above equation (4) is used as the dischargeable amount obtained based on the above equation (5). Change by ΔBTPpower. That is,
ΔPower = ΔPower + ΔBTPPower (7)
Is calculated.
Then, by subtracting the power consumption reduction predicted value ΔPower for the mesh area obtained based on the above equation (7) from the total amount of power supplied in the mesh area obtained by the above equation (2), the power plant 3 The amount of power to be supplied into the mesh area is changed (S184).
Subsequently, the in-mesh energy saving request / target formulating circuit 72 uses the energy saving power integrated value ΔPW [Cnt_Cat ¥] (¥ = 1 to n) for each category obtained based on the above equation (5) as a demand belonging to each category. By dividing by the number of houses, the database shown in FIG. 18 is updated, and the energy saving request / target formulation ends (S185).

  Returning to FIG. 11, when the energy saving request / target formulation is completed in S107, the mesh area management server 4 creates and notifies the power management server 2 of a power supply request by the power supply request formulation circuit 66 (S108). . Specifically, in order to notify the power management server 2 of the power consumption reduction predicted value ΔPower obtained by the above formula (4) or formula (7), transmission data is generated according to a predetermined protocol not shown. . When the power management server 2 receives the power supply request from the mesh area management server 4, the power management server 2 calculates the power allocation amount to each mesh area and the power generated by the power plant 3 based on the reception result, and the mesh area The management server 4 and the power plant 3 are notified of predetermined information. The detailed operation of the power management server 2 will be described later.

  When the total power supply amount in the mesh area does not exceed the power allocation amount in S106, or when the power supply request formulation / notification is completed in S108, the mesh area management server 4 generates the power generation amount from the power management server 2. Check whether a power consumption information notification request has been received (S109). If received, the power management server 2 is notified of the power generation amount information and power consumption information collected from each consumer (including the power consumption amount and the power consumption reduction predicted value ΔPower in each mesh area) (S110). , The control flow from S102 is repeated. When it is not a power generation amount / power consumption information notification request from the power management server 2 in S109, it is confirmed whether it is power amount allocation information from the power management server 2 (S111). In the case of power amount allocation information, the notified power allocation amount is registered in the database (S112), a supply power amount allocation amount database for each consumer is created and revised (S113), and the control flow from S102 is repeated.

  When the energy saving request / target notification is received from the power management server 2 in S114, the energy saving request / target formulation flow shown in FIG. 12 is similarly performed (S115), the power supply request is formulated, and the power management server 2 (Specifically, a protocol format (not shown) is generated and transmitted to send the power consumption reduction predicted value ΔPower to the power management server 2) (S116), and the mesh area management server 4 starts from S102. Repeat the control flow.

Next, the operation of the power management server 2 shown in FIG. 6 will be described with reference to FIGS.
FIG. 21 is a control flow showing the entire processing of the power management server 2 in the first embodiment.

  When the power management server 2 is activated, the CPU 81 registers the power plants 3A to 3N. Specifically, device authentication is performed between the power management server 2 and a server that manages a power generation amount (not shown) in the power plant (S401). When the registration of each power plant is completed in S401, the CPU 81 instructs the power generation plan formulation circuit 85 to formulate an initial power generation plan. Upon receiving the instruction, the power generation plan formulation circuit 85 stores in the ROM 82. A database relating to the power plant being operated is read out and written into a memory (not shown) in its own circuit.

  The power generation plan formulation circuit 85 formulates an initial power generation plan based on the database shown in FIG. Specifically, in the first embodiment, each power plant first formulates a power generation plan so as to start power generation with the initial power generation amount shown in FIG. The power generation plan thus created is notified to each power plant (S402).

When the creation and notification of the initial power generation plan is completed in S402, the CPU 81 then registers the mesh area management server 4 arranged in each mesh area (S403). Specifically, device authentication is performed between the power management server 2 and the mesh area management server 4.
When the device authentication is completed in S403, the power management server 2 instructs each mesh area management server 4 to notify the total contracted power consumption of each customer in the mesh area. When the mesh area management server 4 receives this request notification, the mesh area management server 4 reads out the contract power consumption of each customer from the contract power consumption database circuit 71 and obtains the sum of the contract power consumption of all the customers in the mesh area. The result is notified to the power management server 2. When the power management server 2 receives the total amount of contracted power consumption from each mesh area management server 4, it registers it in the database in the energy saving request / target formulation circuit 87 (S404).
When the power management server 2 completes the process of registering the sum of the contract power consumption from all the mesh area management servers 4 in the database in the energy saving request / target formulation circuit 87, the power management server 2 monitors the power consumption in the mesh area. This is performed (S405).

FIG. 22 is a control flow showing details of the monitoring processing of the power consumption in the mesh area.
When the monitoring of the power consumption of each mesh area is started, the CPU 81 instructs the peak power monitoring circuit 86 to monitor the power consumption. Upon receiving the notification from the CPU 81, the peak power monitoring circuit 86 first initializes the mesh area number $ for identifying the mesh area to $ = 0 (S421).
When this initialization is completed, the power consumption MPC [$] for each mesh area managed by the mesh area management server 4 with respect to the mesh area management server 4 corresponding to the mesh area number $ (initially $ = 0). Is issued via the backbone communication I / F 84 (S422).

  When the mesh area management server 4 receives the power consumption MPC [$] from the mesh area management server 4 by the process of S110 of FIG. 11, the mesh area number $ stored in advance in the power generation plan formulation circuit 85 is set. The corresponding power allocation amount MPS [$] is read (S423). When reading of the power allocation amount MPS [$] is completed, it is confirmed whether the operations of S422 and S423 have been performed for all mesh areas (S424). If not completed, the mesh area number $ is incremented ($ = $ + 1) (S425) and S422 to S424 are repeated.

Thus, when the above operations for all mesh areas are completed by the processing of S422 to S425, the sum (ΣMPC [$]) of the power consumption MPC [$] of each mesh area notified from each mesh area management server 4 is obtained. Then, the sum (ΣMPS [$]) of the power allocation amount MPS [$] of each mesh area is calculated.
Then, the difference {ΣMPS [$] between the sum (ΣMPC [$]) of the power consumption amount MPC [$] in each mesh area and the sum (ΣMPS [$]) of the power allocation amount MPS [$] in each mesh area. -ΣMPC [$]} is obtained. The difference {ΣMPS [$] − ΣMPC [$]} is checked to see if it is less than [predetermined value 1] set in advance to determine whether the amount of power supplied from the power plant is insufficient. (S426).
If this difference {ΣMPS [$] − ΣMPC [$]} is equal to or greater than [predetermined value 1], it is determined that the amount of power supplied from the power plant is sufficient, and subsequently this difference {ΣMPS [$] − Whether ΣMPC [$]} exceeds a preset [predetermined value 2] (however, [predetermined value 2]> [predetermined value 1]) to determine whether the amount of power supplied from the power plant is excessive Whether or not is confirmed (S431). In the case of [predetermined value 2] or less, it is determined that there is no particular problem with the amount of power supplied from the power plant, and the mesh area power consumption monitoring control is terminated. On the other hand, if [predetermined value 2] is exceeded in S431, it is determined that the power generation amount supplied from the power plant is too large, and the power allocation amount is recalculated and notified to the mesh area (S429).

  If {ΣMPS [$] − ΣMPC [$]} is less than [predetermined value 1] in S426, it is determined that there is a possibility that the power supplied from the power plant may be insufficient, and the peak power monitoring circuit 86 The energy saving request / target formulation circuit 87 is instructed to select a mesh area to be saved and determine a threshold value MSL for calculating an energy saving target (S427).

  Hereinafter, a method for determining the threshold value MSL in the peak power monitoring circuit 86 will be described with reference to FIGS.

  In determining the threshold value MSL in the peak power monitoring circuit 86, basically the same method as that used when the in-mesh energy saving requirement / target formulation circuit 72 of the mesh area management server 4 determines the threshold value SL is adopted. Is done.

That is, when the determination of the threshold value MSL is started, the peak power monitoring circuit 86 initializes the mesh area number $, the count value [Slp & _cnt], and the category number [Cntp_Cati] (S501).
Here, the mesh area number $ is a number assigned to identify each mesh area. Further, the count value [Slp & _cnt] indicates how many mesh areas each have a power supply amount greater than or equal to each threshold & with respect to a plurality of thresholds & assigned in advance to the power supply amount as will be described later. For example, if the number of thresholds & is assigned to m stages from 1 to m in advance, m dedicated counters are used corresponding to this number. Have been prepared. In addition, the category number [Cntp_Cati] (i = 1 to m) indicates to which range of each threshold & assigned to each mesh area the power supply amount of each mesh area belongs. It is for clarifying.

When the initialization is completed in S501, the total power supply amount to each mesh area corresponding to the mesh area number $ (initially $ = 0) is acquired (S502). When acquiring the total power supply amount, the mesh area management server 4 notifies the total power consumption amount and the total power generation amount (including the discharge from the storage battery) in the mesh area. The total power supply amount is calculated by the following equation (8).
Total power supply = Total power consumption-Total power generation (8)
When this calculation is completed, the peak power monitoring circuit 86 reads the contract power consumption for the mesh area from a database storing the sum of the contract power consumption (not shown) (S503), The total amount of power supplied / contracted power consumption in the mesh area) is determined as the normalized amount of power supplied in the mesh area (S504).

When the normalized supply power amount for the mesh area is obtained in S504, the peak power monitoring circuit 86 determines whether the normalized supply power amount corresponding to the mesh area number $ exceeds [Threshold 1]. Confirm (S505). If it exceeds, “1” is added to the count value [Slp & _cnt] for counting the number of mesh areas exceeding [Threshold 1], and “1” is set to the category number [Cntp_Cati] corresponding to the mesh area number $. (S506). When the processing of S506 is completed, the peak power monitoring circuit 86 subsequently checks whether or not the normalized supply power amount corresponding to the mesh area number $ exceeds [Threshold 2] (S507). If there is, the count value [Slp & _cnt] for counting the number of mesh areas exceeding [Threshold 2] is incremented by “1”, and the category number [Cntp_Cati] corresponding to the mesh area number $ is set to “2” ( S508).
The above operation is performed until “NO” in the conditional branch from S505 to S511, or until [threshold m] (m is the upper limit of each preset threshold) (S509, S510).
It is confirmed whether or not the control flow has been completed for all mesh area management servers 4 in the power supply area (S511). If not, the mesh area number $ is incremented ($ = $ + 1) ( S512), the control flow of S502 to S511 is carried out until it is completed for all the mesh area management servers 4 in the power supply area.

  FIG. 24 shows an example of a threshold table that defines each of the above thresholds & that is set for the normalized power supply amount. Here, when the normalized power supply amount is 1.0 kW or less, [threshold 0], and the threshold value exceeding 1.0 kW and up to 1.10 kW is set as [threshold 1]. Up to [Threshold m], m + 1 threshold $ is defined. Note that the threshold table is not limited to that shown in FIG. 24, and may be set based on operational results.

  In this way, when the processes of S502 to S511 described above are executed, the supply power amount normalized for each mesh area is compared with each of the [threshold 0] to [threshold m] set stepwise. Each time, the count value [Slp & _cnt] (& = 1 to m) corresponding to each [threshold 0] to [threshold m] changes, and the normalized supply power exceeds each [threshold 0] to [threshold m]. Since the number of mesh areas having a quantity is sequentially counted, as a result, a histogram of the amount of supplied power corresponding to each count value [Slp & _cnt] is created. For example, when the normalized power supply amount of the mesh area exists between [threshold J] and [threshold J + 1], “J” is given as the category number [Cntp_Cati] for this mesh area. Will be.

  As described above, when the confirmation for all the mesh area management servers 4 is completed in S511, the peak power monitoring circuit 86 selects the mesh area to be energy-saving and calculates the energy-saving target threshold value MSL. Is determined (S513). Hereinafter, a method for determining the threshold value MSL will be described with reference to FIGS. 25 and 26.

FIG. 25 is a database used when predicting the energy saving power consumption (power consumption reduction amount) generated in each mesh area to be energy saving when each threshold value MSL is set.
When determining the threshold value MSL, the peak power monitoring circuit 86 predicts the energy-saving power amount when the threshold value MSL is set in the same manner as in the case where the threshold value SL is determined by the previous mesh area management server 4. The value is calculated based on the database shown in FIG.

That is, in FIG. 25, when one threshold value MSL is set, data indicating energy saving electric energy that can be expected for a mesh area having a normalized supply electric power equal to or higher than the threshold value MSL is tabulated. Registered in advance.
For example, when [threshold value 1] is set as the threshold value MSL, the value “AAAAAA” in the figure is a category in which the normalized supply power amount is [threshold 1] or more and less than [threshold 2]. One mesh area to which it belongs (in the example shown in FIG. 26, a mesh area having a category number [Cntp_Cati] = 2 corresponding to a portion surrounded by a bold line (mesh area numbers $: 000, 003, 012, 014,...)) ) Shows the energy saving energy that can be expected.

  Therefore, in the database shown in FIG. 25, when [Threshold value 1] is selected, if the number of mesh areas belonging to the category of [Threshold 1] or more and less than [Threshold 2] is “N”, “N” places A total of N × AAAAA (KW) can be expected to be reduced by the mesh area. Similarly, when [Threshold value 1] is selected, the number of mesh areas belonging to a category that is greater than or equal to [Threshold M] and less than [Threshold M + 1] is “S1MM”, and energy saving power is expected for one mesh area that can be expected at that time. When the amount is “MMMMM”, the total amount of energy saving that can be expected to be reduced is MMMMM × S1MM (KW).

  Thus, when [threshold value 1] is set as the threshold value MSL, for example, the number of mesh areas belonging to the respective categories from [threshold 1] to [threshold m] is set to mesh area number $ and category number [ Cntp_Cati] and referring to the database shown in FIG. 25, the energy saving electric energy that can be expected to be reduced at each stage from [Threshold 1] to [Threshold m] is obtained for each category as described above. If energy saving power amount is calculated according to the number of mesh areas to which it belongs and all these energy saving power amounts are added, the value at that time will be within the power supply area when [Threshold value 1] is selected as the threshold value MSL. It is all the energy saving energy (predicted value) that can be expected.

The numerical values such as “AAAAA”, “BBBBB”,... “YZZZZZ” shown in FIG. 25 are the average of the power consumption actually reduced by transmitting the energy saving request and using the selected threshold value number. The value is calculated, and the registered value currently registered and the data registered in the database with the current actual value are changed. For example, when the threshold value 1 is selected and the average reduction value (actual measurement value) of the threshold 1 is “AXXX”, in the first embodiment,
0.99 x AAAAA + 0.01 x AAXXX
Thus, data to be registered in the database is calculated, and the numerical value is stored in the database. In FIG. 25, the energy saving target is a numerical value obtained by normalizing the energy saving target value (supplied power amount) notified to each mesh area. When actually notified, the numerical value is a normal value determined for each mesh area. Notification is made by multiplying by the conversion factor (total contracted power consumption). On the mesh area side, energy saving is carried out with this value as a target. Specifically, the energy saving target is set so that the amount of power supplied in the mesh area is less than the notified numerical value.

When the energy saving power amount (predicted value) that can be expected in the power supply area is calculated as described above, the peak power monitoring circuit 86 is
Total power supply-Energy saving power (predicted value) <Total power generation (or total power generation + margin power)
The maximum threshold value MSL that satisfies the above is obtained.
For example, when the energy saving target cannot be achieved even with [Threshold 1], the threshold value MSL is lowered by one step and changed to [Threshold 0], and the same processing is performed.

  Returning to FIG. 22, when the setting of the threshold value MSL is completed in the previous S513, the peak power monitoring circuit 86 notifies the energy saving request / target formulation circuit 87 of the threshold value MSL of each mesh area. Upon receiving this notification, the energy saving request / target formulation circuit 87 implements the energy saving requirement / target formulation / notification (S428).

FIG. 27 is a control flow showing details of the above energy saving request / target formulation / notification processing by the power management server 2.
When the energy-saving request / target formulation / notification process is started, the energy-saving requirement / target formulation circuit 87 sets the mesh area number $ to the initial value “0” and calculates the energy-saving power amount predicted in the power supply area. Power consumption reduction predicted value ΔMPpower is set to an initial value “0”. Further, the energy saving integrated value ΔTPW [Cntp_cat $] ($ = 1 to 1) for each category necessary for updating the database shown in FIG. 25 (that is, the energy saving target value in the mesh area belonging to each category to be energy saving). m) is set to an initial value “0” (S551).

When the initialization is completed, the energy saving request / target formulation circuit 87 checks whether or not the total power supply amount corresponding to each mesh area number $ exceeds the threshold value MSL (S552). If it exceeds, an energy saving target value is created (S553). Specifically, in FIG. 26, for a mesh area that exceeds the threshold value MSL,
(Normalized mesh area supply power amount—threshold value MSL) × normalization coefficient (total contract power consumption amount)
Is calculated as the energy saving target value.
When the energy saving target value is created in S553, the energy saving target value is notified to the mesh area management server 4 that will manage the mesh area (mesh area number $ = 1 at first) to be the energy saving target (S554). Then, it waits for reception of a power supply request from the mesh area management server 4 and a predicted power consumption reduction value ΔPower (S555). Similarly, in the previous S552, the mesh area management server 4 that manages a mesh area that does not exceed the threshold value MSL is notified to transmit a power supply request notification (S559), and mesh area management is performed. Waiting for reception of a power supply request from the server 4 and a predicted power consumption reduction value ΔPower (S555).

Then, when the predicted power consumption reduction value ΔPower transmitted from the mesh area management server 4 is obtained by the processing of S110 of FIG. 11, the energy saving request / target formulation circuit 87 predicts the energy saving power in the power supply area. In order to obtain the amount, a power consumption reduction predicted value ΔMPpower is calculated based on the following equation (9).
ΔMPpower = ΔMPpower + ΔPower (9)
Also, the energy saving power integrated value ΔTPW [Cntp_cat $] ($ = 1 to m)) for each category necessary for updating the database shown in FIG. 25 is calculated based on the following equation (10) ( S556).
ΔTPW [Cntp_cat $] = ΔTPW [Cntp_cat $] + ΔPower (10)

  Then, it is confirmed whether or not the above processing has been performed for all mesh area management servers 4 (S557). If there is an unimplemented mesh area management server 4 as a result of the confirmation, the mesh area number $ is incremented ( $ = $ + 1) (S558), the control flow of S502 to S557 is executed again. If the implementation has been completed for all mesh area management servers 4, the energy saving power integrated value ΔTPW [Cntp_cat $] ($ = 1 to m)) for each category is calculated as the number of mesh areas belonging to each category. The database shown in FIG. 25 is updated by dividing by (S560).

  Returning to FIG. 22, when the energy saving request / target formulation / notification flow ends in S428, the power management server 2 recalculates the power allocation amount to be supplied to each mesh area, and the recalculation result is sent to the mesh area management server 4. Notification is made (S429).

FIG. 28 is a control flow showing details of the recalculation / notification processing of the power allocation amount to be supplied to each mesh area.
In FIG. 28, the power generation plan formulation circuit 85 obtains the sum of the power supply amounts for each mesh area obtained from the energy saving requirement / target formulation circuit 87 based on the above-described equation (8), and from the total power supply amount. Then, by subtracting the power consumption reduction predicted value ΔMPpower in the power supply area obtained based on the above equation (9), the amount of power supply required in the power supply area is obtained. It is confirmed whether or not the power supply amount required in the power supply area thus obtained exceeds [predetermined value 10] for determining the power generation capability of the power plant 3 (S571).

  When the power supply amount requested in the power supply area exceeds [predetermined value 10], a discharge request from the storage battery 13 is created and notified to each mesh area management server 4 (S572). Then, after notifying the discharge request of the storage battery, the total power consumption and the total power generation amount (from the storage battery) in each mesh area newly notified from each mesh area management server 4 by the process of S110 shown in FIG. Based on the above equation (8), a power supply amount required for the mesh area (hereinafter referred to as a power supply request amount) is calculated.

Next, the power generation plan formulation circuit 85 initializes the mesh area number $ for identifying each mesh area to “0” (S573). When this initialization is completed, it is confirmed whether or not the requested power supply amount of the mesh area corresponding to the mesh area number $ (initially $ = 0) exceeds the contracted power consumption amount (S574). Here, if the supply power requirement exceeds the contracted power consumption, then whether the supply power requirement does not exceed [predetermined value 11] for determining the margin of the power generation capacity of the power plant Confirm (S576). In the first embodiment, [predetermined value 11] is a value obtained by subtracting the margin from the power generation capacity of the power plant. When it is determined that [predetermined value 11] is exceeded, the power generation capacity of the power plant has no margin, so the power allocation amount for the mesh area is
Power allocation amount = (sum of contracted power consumption at each customer in the mesh area) × [predetermined value 12]
(Where [predetermined value 12] is a numerical value equal to or less than “1” set in advance) and notifies the mesh area management server 4 of the mesh area $ (S577).

On the other hand, if the power supply requirement amount for the mesh area does not exceed [predetermined value 11] in S576, or if it does not exceed the contracted power consumption amount in S574, the power generation capacity of the power plant has a margin, The requested power supply amount for the mesh area is directly used as the power allocation amount, and is notified to the mesh area management server 4 that manages the mesh area (S575).
When the notification of the power allocation amount is completed as described above to the mesh area management server 4 that manages the mesh area, has the power generation plan formulation circuit 85 notified the power allocation amount to all the mesh areas? Whether or not an unreported mesh area remains is checked, the mesh area number $ is incremented ($ = $ + 1) (S579), and the control of S574 to S578 is performed.

  Returning to FIG. 22, when the power allocation amount calculation / notification control for the mesh area is completed in S429, the power generation plan formulation circuit 85 starts a power generation plan re-formulation process (S430).

FIG. 29 is a control flow showing details of the power generation plan re-formulation process in the power management server 2.
In FIG. 29, first, all power allocation amounts for each mesh area are added to calculate a total power allocation amount (Σ {power allocation amount}) in the power management area (S601). Next, the total required power generation amount Pe in the power management area is calculated using the total power allocation amount (S602). The total required power generation amount Pe is obtained by the following equation (11) in the first embodiment.
Total required power generation amount Pe = total power allocation amount × [predetermined value 15] (11)
However, [predetermined value 15] is, for example, for the total power allocation amount calculated in advance in S601 in order to keep the peak power of the total power consumption in the power management area below the total power generation amount of the power plant. Power is generated with a 10% margin. Therefore, the [predetermined value 15] in this case is 1.1.

  As a result, even if the peak power exceeds the total power generation requirement Pe of the power plant 3, there is a 10% power margin. Supply can be made. However, when the [predetermined value 15] is increased, the margin is increased and the surplus power is increased. Therefore, in the first embodiment, since there is a midnight time zone in which there is not much increase or decrease in peak power or a daytime time zone in which the increase or decrease in peak power is significant, the [predetermined value 15] is also switched at each time. To do. Although not shown in the first embodiment, a database for storing [predetermined value 15] at each time is created for each day of the week and season, and the contents of the database are updated based on the actual results.

  Specifically, in the time zone of the midnight time period when the predicted power supply amount and the power usage amount are not significantly different, for example, [predetermined value 15] is set to about 1.025, and the power consumption amount is set to the peak power. The above [predetermined value 15] is set to about 1.15 in the morning or evening to night time, and the amount of power generated by the distributed power source is not stable in the daytime time zone, so 1.05-1.125. For example, the [predetermined value 15] is increased (for example, 1.125) for a lunch time period. Also, for a day of the week whose life rhythm is different from a weekday, such as a holiday, a sudden increase in peak power can be handled by setting the coefficient a little larger. By controlling the [predetermined value 15] as described above, it is possible to control the amount of supplied power without causing a sudden increase in peak power without causing a shortage of supplied power from the system, and the midnight power time zone. In the time zone where the fluctuation amount of peak power from the predicted value is small, it is possible to generate power while suppressing surplus power, so that it is possible to suppress excessive power supply and troubles caused by insufficient power supply. is there. Furthermore, it goes without saying that the [predetermined value 15] may be set according to the amount of power generated by natural energy and weather forecast information. This is because, when the amount of power generated by natural energy is large, even when the amount of power supplied to the system changes greatly due to a sudden change in weather, power is stably supplied to the system. As for the weather information, when the weather is stable and “sunny”, the amount of power generated by natural energy is stable, so [predetermined value 15] is set to a smaller value than “cloudy” or “rain”, and the surplus Reduce power generation. On the other hand, in weather such as “cloudy when sunny”, “cloudy”, and “rainy” where it is difficult to predict the amount of solar radiation, an error occurs in the power generation prediction result. Even when power is generated, there is an effect that power can be stably supplied to the power system. For example, the “guerrilla heavy rain” that frequently occurs recently has a sudden change in the amount of solar radiation locally, so it is needless to say that the [predetermined value 15] may be set large at a time around summer evening. .

When the calculation of the total required power generation amount Pe for the power management area based on the formula (11) is completed in S602, the power generation plan formulation circuit 85 sets the priority number n for identifying the priority order of the power plants 3 to “0”. And a total power generation amount P, which is a total value of the power generation amount of each power plant 3 for the power management area, is initialized as P = Pinit (S603). Here, Pinit is the total value of the power generation amount that each power plant 3 performs at the minimum with respect to the power management area.
For example, when power is supplied from a nuclear power plant or a thermal power plant, it is necessary to perform minimum power generation even when the amount of power supplied to the power management area is small. FIG. 30 shows a database relating to the minimum amount of power generated by each power plant 3. Therefore, when creating a power generation plan, it is initialized to a total value Pinit (a total value of each power generation amount in FIG. 30) of the power generation amount that each power plant 3 performs at a minimum for the power management area. .

  When the initialization of the total power generation amount P, which is the total value of the priority number n and the power generation amount of each power plant 3, is completed in S603, the power generation amount planned value PWQn of each power plant 3 is then initialized (S604). . This is performed, for example, by individually substituting the power generation initial value shown in FIG. 30 for the power generation plan value PWQn provided for each power plant 3.

  When the initialization of each power plant is completed in S604, the power generation amount of the power plant corresponding to the priority number = n (initially n = 0) is determined using a database (not shown) (S605). In the database of the first embodiment, at least two values of the maximum power generation amount and the normal steady power generation amount are stored for each power plant. When determining the power generation amount, the normal steady power generation is determined. The amount of power generation is determined based on the amount. Note that the maximum power generation amount of the power plant is set when supply power is insufficient even when all the power plants supply power with a normal steady power generation amount.

Here, the priority number n for each power plant will be described.
The priority number n is used to identify the power plant 3 that is used preferentially in formulating the power generation plan, and means that the power plant 3 with the lower priority number n has a higher priority. FIG. 30 shows an example in which the priority order is determined according to the type of power generation. FIG. 30 shows the case where the power generation cost is low and the priority of nuclear power generation that is environmentally friendly (does not emit carbon dioxide) is increased. Next, the lowest priority was set for thermal power generation and hydroelectric power generation, which can supply power stably. It should be noted that the priority order is not limited to that shown in FIG. 30, and it is needless to say that the priority order of the power plant 3 using natural energy such as sunlight or wind power may be set higher.

  When generating the power generation plan, when using the power generation amount of the power plant 3 by natural energy whose power supply amount is not stable, the [predetermined value 15] in S602 is set larger to stabilize the power supply amount from the system. Needless to say, it may be controlled as described above. Furthermore, the priority number n is not fixedly allocated as shown in FIG. 30. For example, when the amount of water in the dam and the amount of rainfall around the dam are large, Needless to say, when there is a lot of rainfall and the water level of the dam is expected to rise in the future, the priority of power generation by hydroelectric power generation may be increased. It goes without saying that by controlling as shown on the left, there is an effect that power can be generated by effectively utilizing the amount of water stored in the dam.

  Furthermore, when there is a margin in the power generation amount at the power plant 3 relative to the power supply amount, the power generation amount from a power plant that stores surplus power as energy, such as a pumped storage power plant, may be used with priority. It goes without saying that it is good. For power generation from a pumped storage power plant, etc., a minimum required amount of water storage is stored in a database for each season and time zone, and if the amount of water storage is secured, control is performed to generate power preferentially. It goes without saying that it is also good. In particular, pumped-storage power generation is required to effectively use the generated power by reducing the amount of stored water during times when surplus power is likely to occur, such as at night. Therefore, reserve the amount of water so that sufficient power can be generated during the peak hours of power consumption, and increase the priority when a predetermined amount of water can be secured outside of the above time period. At the time of peak power usage, the priority is controlled to be low in order to respond immediately when supply power shortage occurs. As a result, the surplus power can be efficiently stored, and at the same time, when the peak power is insufficient, there is an effect of being able to respond immediately.

Next, when a normal steady power generation amount POWER [n] at the power plant 3 corresponding to the priority number = n (initially n = 0) is searched using a database not shown in the previous S605, this steady power generation is performed. From the amount POWER [n], the total power generation amount P, which is the total value of the power generation amount of each power plant 3, is calculated based on the following equation (12) (S606).
P = P + POWER [n] (12)
Subsequently, it is determined whether or not the total power generation amount P of the power plant 3 exceeds the total required power generation amount Pe obtained by the previous equation (11) (S607). The power generation plan value PWQn of the power plant 3 is set to the normal steady power generation amount Power [n] (S608), the priority number n is incremented (n = n + 1) (S509), and the flow of S605 to S607 is executed. To do.

On the other hand, if it is determined in S607 that the total power generation amount P of the power plant 3 does not exceed the total required power generation amount Pe obtained by the previous equation (11), the total power generation amount P of the power plant 3 is determined. Therefore, it is necessary to reduce the amount of power generation at the required power plant 3. Therefore, the planned power generation amount PWQn of the power plant 3 having the priority of the priority number n is changed based on the following formula (13) (S610).
PWQn = POWER [n]-{total power generation amount P-total required power generation amount Pe} (13)

  When the planned power generation amount PWQn is less than the minimum power generation amount that the power plant 3 performs, the power generation plan is formulated with the planned power generation amount PWQn as the minimum power generation amount that the power plant 3 performs. In addition, although not shown in FIG. 29, when the total required power generation amount Pe is not exceeded even if all the power plants 3 generate power with the normal steady power generation amount, the power generation amount is switched to the maximum power generation amount of each power plant 3. Formulate a power generation plan. Furthermore, even if all the power plants generate power with the maximum power generation amount, if the total power generation amount P that is the sum does not exceed the total required power generation amount Pe, in the first embodiment, the mesh area management server 4 Notify that. The mesh area management server 4 that has received the notification instructs the smart meter 17 of the consumer with a large amount of power usage to forcibly reduce the power consumption in order. The smart meter 17 that has received the instruction forcibly changes the set temperature of the air conditioner or the like to save energy. When the calculation of the power generation plan amount PWQn of the power plant with the priority number n is completed in S610, the power generation plan formulation circuit 85 notifies each power plant of the power generation plan (S611).

  Returning to FIG. 21, when the formulation and notification of the power generation plan is completed in S430, the power management server 2 finishes monitoring the power consumption amount of the mesh area, and there is a power supply request notification from the mesh area management server 4 (S406). If there is, the power allocation amount to the mesh area is recalculated (S407).

  Note that the power allocation amount recalculation / notification (S407) to the mesh area has been described above (FIG. 28), and thus the description thereof is omitted. When the power allocation amount recalculation / notification to the mesh area is completed in S407, the power management server 2 creates a power generation plan based on the allocation result (S408). Note that the power generation plan creation is also described above (FIG. 29), so description thereof is omitted. If NO in S408 or S406, the power management server 2 confirms whether there is a mesh area-related database update request (S409). Specifically, it confirms changes in the total amount of contracted electric energy that accompanies changes in consumers, changes in the number of mesh areas accompanying changes in mesh areas, changes in various databases, and the like. If there is a change, the database is changed (S410). When the change of the mesh area database is completed, the power management server 2 returns to S405 and starts monitoring the mesh area power consumption.

Explanation of modification.
In addition, in this Embodiment 1, although the case where sunlight was used as an example of the power generation device by natural energy was demonstrated, it is not restricted to this, For example, even when using the power generation using a wind force etc., it is the same Needless to say, it has an effect. In Embodiment 1, a mesh area is defined by collecting one or a plurality of adjacent pinpoint weather forecast areas from which pinpoint weather forecasts can be obtained. Natural energy is generated using the weather forecast information of this pinpoint weather forecast area. If it is configured to predict the amount of power generated by power generation, it is possible to accurately predict the amount of power generated by natural energy when formulating a power generation plan, so that it is possible to minimize the generation of surplus power when formulating a power generation plan Needless to say.
Moreover, in this Embodiment 1, about the power consumption of a consumer, although the power generation plan in a power plant was formulated based only on the power consumption notification, it is not limited to this, and the power consumption amount is estimated for each mesh area. However, it goes without saying that if a power generation plan is formulated based on the estimation result, the generation of surplus power can be further reduced.

In addition, when estimating the power consumption, a database is created for each consumer for each day of the week and for each time period, and if each energy consumption is estimated based on the created database, each demand The accuracy of the estimated value of the power consumption of the house is improved, and there is an effect that the surplus power can be reduced. Needless to say, if the database is constructed and controlled on the basis of conditions such as season and daylight saving time, the power consumption prediction accuracy is further improved.
Furthermore, if another database management is used for air conditioners, the power consumption of air conditioners whose power consumption changes depending on the outside temperature, humidity, etc. can be linked to the above-mentioned pinpoint weather forecast to predict power consumption. The estimation accuracy of can be improved. Needless to say, if a database is further constructed for each weather as well as the air conditioner, the power consumption prediction accuracy is further improved.
In addition, the air conditioner may be controlled by setting a timer. Needless to say, the same effect can be obtained even if the timer information is obtained and controlled from the consumer in the prediction of the power consumption.

  As described above, according to the system power management system of the present invention (Claim 1), the difference between the power allocation amount that defines the amount of power supplied from the system power supply and the total power consumption amount in the system is determined in advance. When the value is less than the specified value, the threshold value for selecting the customer to be notified of the energy saving request is determined, and the energy saving request / notification is carried out for customers who exceed this threshold value. Customers who should be notified of energy-saving requirements / targets can be selected accurately with simple calculations. As a result, since there is no notification to consumers who do not need to save energy, traffic on the network is not unnecessarily raised. Further, since the energy saving request can be notified based on the amount of power used by the customer, it is possible to always distribute the power fairly to the customer. Further, since the amount of calculation can be reduced, the processing by the power management means can be speeded up, and the peak power shortage can be dealt with in real time. In addition, since the peak power shortage can be monitored and controlled in real time, the margin of surplus power can be made small, and therefore the generation of surplus power can be suppressed.

  In addition, according to the grid power management system of the present invention (Claim 2), even if the weather suddenly changes and the amount of power generated by natural energy changes greatly, selection of a consumer who can perform an energy saving request accurately with simple calculation The energy saving target can be set, so that the amount of power supplied from the system power supply to the system can be stabilized almost in real time, and a power generation plan that suppresses the generation of surplus power as much as possible can be formulated, and the power can be generated efficiently.

  Further, according to the system power management system of the present invention (Claim 3), the degree of energy saving demand is set between a consumer who owns the distributed power system using the natural energy and a consumer who does not have the distributed power system. As a result, the minimum necessary power can be supplied to consumers with the system even if the weather is bad and sufficient power generation cannot be obtained with a distributed power system using natural energy. The energy saving request is not sent to a customer who has a power generation facility using natural energy.

  Further, according to the system power management system of the present invention (Claim 4), when the weather is bad and a large amount of power generated by the distributed power system using natural energy cannot be expected, an energy-saving request / By increasing the notification level compared to the case when the weather is good and sufficient power generation is obtained, even if the weather is bad and sufficient power generation is not possible with a distributed power system using natural energy, the same level It is possible to supply a minimum amount of electric power to a consumer having a system, and an unreasonable energy saving request is not sent to a consumer having a power generation facility using natural energy. On the other hand, when the weather is good and there is a sufficient amount of power generation, the amount of power supplied from the system power supply can be suppressed.

Further, according to the system power management system of the present invention (Claim 5), the power amount measurement and notification means only needs to manage about a dozen home devices arranged in the customer's home, and is an expensive high performance. A general-purpose microcomputer can be used instead of a CPU, and costs can be reduced.
In addition, since there is no need to determine whether or not the amount of power consumption has been reduced or the amount of reduction in response to an energy saving request, there is no need to add a new function to meet the energy saving request. The cost increase of a single unit can be minimized.
In addition, since the energy measurement and notification means performs energy-saving control of each customer's in-home equipment, an unnecessary high-performance CPU is installed in the energy amount control means, or more server machines are arranged than necessary. Therefore, the cost of the electric energy control means can be reduced. Furthermore, since the processing load of the electric energy control means can be minimized, there is an effect that it can be carried out in real time such as reviewing the power generation plan.

  Moreover, according to the system power management system of this invention (Claim 6), the amount of power that can be saved in each customer's house is predicted based on the energy saving request from the energy saving request notifying means, and this is used as the power consumption reduction predicted value. Since it transmits to an electric energy control means, the electric energy control means side can estimate easily the electric energy which can save energy of each consumer's house.

  Moreover, according to the grid power management system of this invention (Claim 7), when the energy saving request notification is created based on the priority order set in advance for the customer's home device, all of the energy saving targets can be achieved. Since no energy saving request is issued to the home appliances of the customer, unnecessary energy saving is not performed on the consumer.

  Further, according to the system power management system of the present invention (claim 8), the power amount control means moves from the system power source into the system based on the predicted total power consumption that can be reduced in the system and the total power supply amount. Since the amount of power to be supplied can be calculated, the amount of power required by the system power supply can be easily grasped, and unnecessary power generation from power stations can be suppressed. This has the effect of minimizing emissions.

  According to the system power management system of the present invention (Claim 9), if the normalizing means is provided in the electric energy measurement and notification means, the arithmetic processing in the electric energy control means can be reduced, which is unnecessarily high. Since it is not necessary to implement a function by installing a high-performance CPU or arranging more server machines than necessary, the cost of the electric energy control means can be suppressed. In addition, since the processing load on the power amount control means can be minimized, the power generation plan can be reviewed in real time.

  According to the system power management system of the present invention (claim 10), since the normalization coefficient is set to an integer, the processing steps at the time of division can be reduced, and the processing load at the time of calculation is minimized. Speed up.

  Further, according to the grid power management system of the present invention (claim 11), when normalizing the amount of power supplied to the consumer, it is normalized based on the contracted power consumption that each consumer has concluded with the power company. Therefore, the fairness in determining the threshold value can be maintained.

  Moreover, according to the system power management system of this invention (Claim 12), it is possible to facilitate the selection process when selecting the consumers to be notified of the energy saving request, and to easily predict the energy saving power amount. Therefore, the energy saving target value can be determined efficiently and accurately.

  Further, according to the system power management system of the present invention (claim 13), the amount of energy saving can be predicted based on past performance data, and the system power can be stabilized without notifying consumers of unnecessary energy saving requests. be able to. In addition, since the amount of calculation processing for setting the threshold value can be greatly reduced, it is possible to configure a power management means without installing an over-spec CPU more than necessary, and to implement a power generation plan review in real time. There is an effect that can.

  Further, according to the system power management system of the present invention (claim 14), even when the power supply from the system power supply side is slightly delayed, the power supply amount in the system power supply can be maintained by the discharge from the power storage means. Even when power consumption suddenly increases, the system power supply can be stably maintained.

  Further, according to the system power management system of the present invention (claim 15), even when a consumer uses an electric vehicle, it is possible to eliminate a problem that the battery is discharged and cannot be used.

  Further, according to the grid power management system of the present invention (Claim 16), even when the weather suddenly changes and the amount of power generation using natural energy greatly increases or decreases, each mesh area power management means The power consumption in each mesh area is monitored and controlled, and the monitoring and control results are notified to the power management means. The power management means determines the power generation amount at the power plant based on the notification results. Review can be performed in real time. In other words, when formulating a power generation plan, the power generation amount of the power plant can be formulated from the total amount of energy that can be saved, so unnecessary power generation at the power plant can be suppressed, and surplus power can be minimized. , CO2 emissions can be reduced. In addition, because the amount of power generated by natural energy can be managed in units of pinpoint weather forecast areas, it is possible to respond to sudden changes in solar radiation in real time, and the trend of future power generation from the arrangement of each mesh area The power can be stably supplied to each consumer included in each mesh area.

  According to the grid power management system of the present invention (claim 17), when the power consumption in the mesh area increases rapidly, the mesh area power management means performs the energy saving process. There is an effect that can be controlled. In addition, since the power supply can be managed in units of mesh area, the power supply amount is controlled even in small areas where the weather changes locally for a short time, such as guerrilla heavy rain, so unnecessary energy-saving requirements can be made. This has the effect of not creating or notifying.

  Further, according to the system power management system of the present invention (invention 18), it is possible to facilitate the sorting process when sorting the mesh area for notifying the mesh area power management means of the energy saving request, and easily. In addition, since the energy saving power amount for each mesh area can be predicted, the energy saving target value can be determined efficiently and accurately.

1 backbone network, 2 power management server, 3 power plant,
4 mesh area management server, 5 mesh network, 6 customers,
A to Z mesh area, 11 solar panel, 12 power conditioner,
13 storage battery, 14 charge / discharge control circuit, 15 bidirectional DC-AC converter,
16 Voltmeter, 17 Smart meter, 18 Commercial power supply, 19 Mesh communication I / F,
20 home power line, 21 home equipment network, 22a-22x air conditioner,
23a-23y LCD TV, 24a-24z lighting equipment, 25 refrigerator,
30a-33 Communication I / F, 40 CPU bus, 41 CPU, 42 ROM,
43 RAM, 44 Communication I / F, 45 Display, 46 Power usage monitoring circuit,
47 Power generation monitoring circuit, 48 Power storage amount monitoring circuit, 49 Power consumption monitoring circuit,
50 DC voltage monitoring circuit, 51 home appliance control circuit, 60 CPU bus, 61 CPU, 62 ROM, 63 RAM, 64 core communication I / F, 65 mesh communication I / F,
66 power supply request formulation circuit, 67 total power consumption calculation circuit, 68 total power generation calculation circuit,
69 Total storage amount calculation circuit, 70 In-mesh power consumption monitoring circuit,
71 Contract power consumption database circuit, 72 In-mesh energy saving request / target formulation circuit, 73 Power consumption prediction database circuit, 80 CPU bus, 81 CPU,
82 ROM, 83 RAM, 84 Core communication I / F, 85 Power generation plan formulation circuit,
86 Peak power monitoring circuit, 87 Energy saving requirement / target formulation circuit.

Claims (18)

Each consumer is provided with a power amount measurement notification means for measuring and notifying the amount of power supplied from the system power supply, and based on the amount of power supplied into the system notified from this power amount measurement notification means. In the grid power management system that manages the power supply to the grid,
Electric energy control means for controlling the amount of electric power to be supplied into the system from the system power supply;
A total supply power amount calculating means for calculating the total supply power amount in the system by adding the supply power amounts of the consumers notified from the power amount measurement notification means;
Normalization means for normalizing the supplied power amount of each consumer notified from the power amount measurement notification means by a normalization coefficient preset for each consumer;
Comparison means for comparing the supply power amount normalized for each consumer from the normalization means with a predetermined threshold;
Count means for measuring the number of consumers exceeding the threshold for each comparison with the threshold by the comparison means;
When the difference between the total amount of power calculated by the total power consumption calculating means and the power allocation amount that predetermines the amount of power supplied from the system power supply is less than a predetermined value, Threshold value setting means for setting a threshold value for selecting a consumer to be energy-saving from among the consumers exceeding the threshold obtained by the counting means;
An energy saving request notifying means for notifying each customer who exceeds the threshold value set by the threshold value setting means;
Including grid power management system. The consumer is provided with a distributed power supply system that generates power using natural energy, and the power generated by the distributed power supply system is consumed in the consumer and the surplus power is sold. 2. The system power management system according to claim 1, wherein the amount measurement notifying means measures the amount of power sold and, when power is sold, notifies the amount of power sold instead of the amount of power supplied. The energy saving request notifying means changes the threshold value and notifies the energy saving request between a consumer having a distributed power system using the natural energy and a consumer not having the distributed power system. The system power management system according to claim 2. The threshold value setting means, when setting the threshold value for a consumer who owns the distributed power system, has the distributed power system when the distributed power system cannot generate enough power based on weather forecast information. The system power management system according to claim 3, wherein the same threshold value as that of the non-consuming customer is used. Upon receiving the energy saving request notification from the energy saving request notifying means, the power amount measurement notifying means confirms the operation status of each in-home device communicable within the consumer in response to the confirmation result, The system power management system according to any one of claims 1 to 4, wherein the energy-saving request is notified to each in-home device based on a set priority order. The power amount measurement notification means predicts the amount of power that can be saved in the consumer according to the notification of the energy saving request from the energy saving request notification means, and as a result of the prediction, it is predicted that energy can be saved in the consumer The system power management system according to claim 5, wherein the power amount is transmitted to the power amount control means as a power consumption reduction predicted value. The power amount measurement / notification means predicts the amount of power that can be saved in each home device based on the priority order set in advance for each home device in response to the energy saving request / target notification from the energy saving request notification means. Then, as a result of the prediction, when the power amount has cleared the energy saving target, the power amount that can be saved is notified to the power amount control means as the power consumption reduction predicted value. Item 6. The grid power management system according to Item 5. The power amount control means calculates the total power consumption reduction prediction value in the system by adding all the power consumption reduction prediction values transmitted from the power amount measurement notification means, and calculates the total power consumption reduction prediction value. And the total supply power amount in the system calculated by the total supply power amount calculation means, the power amount to be supplied from the system power supply to the system is calculated, and the calculation result of the power amount is The system power management system according to claim 6 or 7, which notifies the system power supply side. The normalization unit is provided in the power amount measurement notification unit, and the power amount measurement notification unit notifies the power supply amount normalized by the normalization unit together with the supply power amount. Item 4. The system power management system according to item 1. The grid power management system according to any one of claims 1 to 9, wherein the normalization coefficient set for each consumer is set to an integer. The grid power management system according to any one of claims 1 to 10, wherein the normalization coefficient set for each consumer is set based on a contract power consumption amount of each consumer. The normalization means classifies each consumer into a plurality of categories based on the contract contents at the time of each customer's power contract, sets the normalization coefficient for each classified category, The system power management system according to any one of claims 1 to 11, wherein the supply power amount of each consumer to be notified is divided by the normalization coefficient to normalize the supply power amount. . The ratio of the number of consumers exceeding the threshold counted by the counting means, and the consumption notified from the power amount measurement notifying means when the energy saving request notifying means is notified by the energy saving request notifying means. Based on the predicted power reduction value, there is a database in which energy-saving power amount expected to be able to save energy at each consumer exceeding the threshold is created and registered in advance, and the threshold value setting means is based on this database. The system power management system according to any one of claims 1 and 6, wherein the threshold value is set. Based on the storage information from the storage amount management means when the amount of power supply from the system power supply is insufficient, and the storage amount management means for managing the storage amount stored in the power storage means arranged in the consumer A discharge request generation unit configured to generate a discharge request from the power storage unit, and the storage amount management unit receives power from the power storage unit when receiving the discharge request from the discharge request generation unit. The system power management system according to any one of claims 1 to 13, wherein when the power is stored, the power is stored so as to be discharged from the power storage means. The storage amount notifying means for notifying the storage amount of the power storage means to the storage amount management means, and the storage amount notification means stores at least the amount of power stored in the battery of the electric vehicle and the normal storage battery. 15. The system power management system according to claim 14, wherein the power amount is classified and notified. The mesh area based on the amount of power consumed by each customer in each mesh area obtained by dividing the power supply area to which the power generated by the power plant is supplied and the amount of power generated by the power generation system using natural energy Mesh area power management means for calculating the amount of power supplied to the inside, the mesh area power management means comprising: the power amount control means; the total supply power amount calculation means; the normalization means; the comparison means; and the threshold. While including a value setting means and the energy saving request notification means,
While managing the amount of power to be supplied to the mesh area based on the power information notified from the mesh area power management means, comprising power management means for managing the power generation amount of the power plant,
This power management means
Based on the supplied power amount in the mesh area notified from the mesh area power management means, the power amount to be supplied from the power plant to each mesh area is calculated, and the calculation result is sent to the mesh area power management means. And a power generation plan formulation means for formulating a power generation plan for the power generated at the power plant,
Mesh area total supply power amount calculating means for calculating the total supply power amount in the power supply area by adding the supply power amount in each mesh area notified from the mesh area power management means;
Comparing the total power generation amount generated at the power plant with the total power supply amount in the power supply area calculated by the mesh area total supply power amount calculation means, the total power generation amount and the total power supply amount A mesh area energy saving request notifying means for notifying each of the mesh area power management means of an energy saving request when the difference between them is less than a preset numerical value,
The power generation plan formulation means recalculates the amount of power supplied to the mesh area supplied from the power plant based on the amount of power supplied in the mesh area after energy saving is notified from the mesh area power management means. Then, the recalculation result is notified to the mesh area power management means, and the power generation plan of the power generated at the power plant is re-developed. 14. The grid power management system according to any one of items 13. In response to the notification of the energy saving request from the energy saving request notification means, the amount of power supplied in the mesh area transmitted from the mesh area power management means is compared with the amount of power supplied in advance assigned to the mesh area. A mesh for creating an energy saving target value for the mesh area and notifying each mesh area power management means when the supplied power amount in the area exceeds the supplied power amount assigned to the mesh area The system power management system according to claim 16, further comprising area energy saving target creation means. The mesh area energy saving target creation means is:
Mesh area normalization means for normalizing the grid power usage in the mesh area notified from the mesh area power management means by a normalization coefficient set in advance for each mesh area;
Mesh area comparing means for comparing the power supply amount normalized for each mesh area by the normalizing means with a predetermined threshold;
Mesh area counting means for measuring the number of mesh areas exceeding the threshold each time the comparison means compares the threshold with the threshold;
A numerical value in which a difference between a total power supply amount calculated in the mesh area total power supply amount calculation means in the power supply area and a power allocation amount that predetermines the power amount supplied from the power plant is determined in advance. A mesh area threshold value setting means for setting a threshold value for selecting a mesh area to be an energy saving target from the mesh areas exceeding the threshold obtained by the mesh area counting means. With
18. The energy saving target value is created for the mesh area that exceeds a threshold value set by the mesh area threshold value setting means, and is notified to each mesh area power management means. Grid power management system.

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