JP2014096867A - Smart community system - Google Patents

Abstract

[PROBLEMS] A conventional power energy supply system is centrally managed by an electric power company, and there is no transparency of the charge rate and no market competitiveness. In addition, when consumers sell electricity, they only buy and sell power directly to the power grid.
A smart community system according to the present invention transmits and receives power, and includes a power network having a power line, and a communication network that is arranged in parallel with the power network, transmits and receives power information of the power network, and has a communication line. A storage battery connected to the power network and the communication network; a power meter connected to the storage battery via the power line and the communication line; and acquiring power information of a consumer; connected to the power meter; A distributed power source that supplies power to the storage battery via a meter, and a management system that manages the storage battery connected to the power meter and the communication network via the communication line.
[Selection] Figure 1

Description

  The present invention relates to a smart community system using a distributed power source.

  2. Description of the Related Art In recent years, attention has been focused on a system that enables each consumer to buy and sell the electric power generated by each consumer using a distributed power source using a storage battery installed in each specific area.

  For example, Patent Document 1 discloses an energy supply management system that manages energy supply for each specific region using a fuel cell of each consumer and a storage battery in a power network.

JP 2003-235158 (pages 7-8, FIG. 1)

  However, the conventional power energy supply system as described above has no transparency and market competitiveness of billing charges because the power company manages the entire power system in an integrated manner and is a monopoly market by the power company. It was. Moreover, when selling the electric power generated by the customer, the electric power must be transmitted directly to the power grid, which has a problem of affecting the power quality.

  The present invention has been made to solve the above-mentioned problems, and a storage battery is installed between the power grid and each customer's power meter for each specific region, and the power generated by the customer can be bought and sold. A power meter is installed for each consumer, and a management system for managing power information is installed.

  A smart community system according to the present invention is configured to transmit and receive power, and include a power network having a power line, and a communication network that is arranged in parallel with the power network, transmits and receives power information of the power network, and has a communication line; A storage battery connected to the communication network, a power meter connected to the storage battery via the power line and the communication line, connected to the power meter, and connected to the power meter, via the power meter A distributed power source that supplies power to the storage battery, and a management system that is connected to the power meter and the communication network via the communication line, and manages the storage battery.

  According to the present invention, the management system for managing the storage battery so that the operation of the power generated by the customer, which has conventionally required distribution control in real time, is separated from the management of the electric power company and can be operated by local public bodies, etc. By providing it, it becomes possible to trade electricity with high transparency.

It is the schematic which shows the smart community system which concerns on Embodiment 1 of this invention. It is the schematic which shows the smart community system which concerns on Embodiment 2 of this invention.

Embodiment 1 FIG.
FIG. 1 is a schematic diagram showing a smart community system according to Embodiment 1 of the present invention. A first embodiment of the present invention will be described below with reference to FIG. In FIG. 1, a power line through which power flows is indicated by a solid line, and a communication line through which a communication signal is transmitted is indicated by a dotted line.

  In FIG. 1, in this Embodiment 1, the electric power network 1 which an electric power company holds supplies electric power to the general customer 10, the charging stand 20 of an electric vehicle, and the building 30 which is a large consumer. In parallel with the power network 1, a communication network 2 that transmits and receives power information of the power network 1 is connected to each of the general customer 10, the charging stand 20 of the electric vehicle, and the building 30.

  The general consumer 10 has a power meter 11, a distributed power source 12 that performs private power generation, and a load 13 that consumes power such as home appliances.

  The charging stand 20 of the electric vehicle has a power meter 21 and a storage battery 22 for the charging stand, and the electric vehicle 23 charges power from the storage battery 22 of the charging stand 20. Further, electric power may be charged from the electric vehicle 23 to the storage battery 22.

  The building 30 that is a large-volume consumer includes an electric power meter 31, a building management system 32 that manages the power state of the entire building, a distributed power source 33 for buildings that performs private power generation, and a building load 34 that includes air conditioning and lighting in the building. have.

  In the power distribution system of this power system, the storage battery 3 is introduced for each specific group of areas (for example, neighborhood association areas).

  Specifically, the storage battery 3 is disposed between the electric power network 1 owned by the electric power company and an electric power meter installed in each consumer. In FIG. 1, a storage battery 3 is provided between a power meter 11 and a power network 1 of a general consumer 10, between a power meter 21 and a power network 1 of a charging stand 20 of an electric vehicle, and between a power meter 31 and a power network 1 of a building 30. Be placed. At this time, a power converter (not shown) capable of converting alternating current and direct current between the power grid 1 and the storage battery 3 is also connected between the storage battery 3 and the power meters 11, 21, 31. A power converter (not shown) capable of converting alternating current and direct current is disposed.

  Each of the power network 1 and the communication network 2 owned by the power company is connected to a central power supply command station 5 that is a power supply system of the power company. The power network 1 is connected to a power network 101 in another specific area, and the communication network 2 is connected to a communication network 102 in another specific area. Central power supply command station 5 is also connected to power network 101 and communication network 102.

  A management system 4 is connected to the communication network 2. The management system 4 is also connected to the storage battery 3 and manages the storage battery 3. Specifically, the management system 4 performs control for charging and discharging the storage battery 3 to each of the general customer 10, the charging stand 20, and the building 30.

  For example, when the distributed power source 12 of the general consumer 10 performs private power generation and surplus power is generated, the surplus power of the distributed power source 12 is charged in the storage battery 3. On the contrary, when the electric power of the general consumer 10 is insufficient due to a failure or the like, the storage battery 3 is discharged and the electric power from the storage battery 3 is supplied to the general consumer 10. In this way, the storage battery 3 performs a power transaction with the general customer 10.

  The power meter 11 collects power information of the distributed power source 12 and the load 13 of the general customer 10. The power meter 21 collects power information of the storage battery 22 of the charging stand 20 of the electric vehicle. The power meter 31 collects power information of the building distributed power source 33 and the building load 34 through the building management system 32.

  Further, the power meters 11, 21, 31 transmit the power information collected by the respective power meters to the management system 4 via the communication network 2. The communication network 2 is connected to the storage battery 3, the management system 4, the central power supply command station 5, the power meters 11, 21, 31, the charging station storage battery 22, and the building management system 32 of the building 30.

  The management system 4 collects the power information of the charging station storage battery 22 or the power meters 11, 21, 31 and the building management system 32 via the communication network 2. Further, the management system 4 may collect the power information of the power meters 11, 21, and 31 transmitted to the storage battery 3 from the storage battery 3. Since the management system 4 is connected to the central power supply command station 5, the management system 4 can also be controlled from the central power supply command station 5.

  Further, another specific group of areas and the specific area of the first embodiment are connected by the power network 1 and the communication network 2. In FIG. 1, the power network 1 is connected to a power network 101 in another region, and the communication network 2 is connected to a communication network 102 in another region. The central power supply command station 5 is also connected to other areas.

  Next, the operation of the first embodiment will be described.

  The storage battery 3 is installed for each specific area, receives power supply from the power network 1, and charges the surplus power of the distributed power source 12 of the general customer 10. In addition, the storage battery 3 supplies power to the general consumer 10, the electric vehicle charging station 20, and the building 30, and sells power to the power grid 1. Further, a plurality of storage batteries 3 may be arranged in a multiplexed manner according to the amount of power generation in the area where the power is supplied.

  The power meters 11, 21, and 31 have a communication function, and transmit power information such as power trading between the distributed power source 12 and the load 13 of the general consumer 10 and the power network 1 to the communication network 2.

  Electric power information such as the electric power transaction amount and electric power consumption of the general consumer 10, the electric vehicle charging station 20, and the building 30 is collected by electric power meters 11, 21, and 31, respectively. The power information collected by the power meters 11, 21, and 31 is managed by the management system 4 via the communication network 2.

  The management system 4 charges and discharges the storage battery 3 based on the power information from the power meters 11, 21, and 31 and the power information from the central power supply command station 5.

  In addition, the management system 4 is not only for charging / discharging the storage battery 3, but also for the general customer 10, the charging system 20 for the electric vehicle, the billing process for the building 30, and the electricity charge to the power company accompanying the power supply from the power grid 1 to the storage battery 3. Implement payment processing. In addition, the management system 4 manages the remaining power of the storage battery 3 and requests the power company to supply power.

  Furthermore, the management system 4 manages the power trading between the storage battery 3 and the power meters 11, 21, and 31, and performs billing or payment processing for the general customer 10, the electric vehicle charging system 20, and the building 30. The management system 4 is connected to the central power supply command center 5 of the power company, and has a power supply trading unit that charges or pays for power sales between the power company and the storage battery 3. In addition, the management system 4 includes a power supply trading information transmitting unit that transmits power sales information with the central power supply command station 5 to the power meters 11, 21, and 31.

  In addition, the management system 4 discloses the power information related to the billing or payment processing for the power trading to the general customer 10, the charging system 20, and the building 30. In addition, the management system 4 includes a power data automatic acquisition unit that automatically acquires power information of the power meters 11, 21, and 31.

  Since the management system 4 includes a receiving unit that receives power information transmitted from the power meters 11, 21, and 31, the management system 4 can be introduced into a specific area where the storage battery 3 is not present. Therefore, both areas are managed simultaneously with and without the storage battery 3.

  However, in a specific area where the storage battery 3 is not present, for example, the power generated by the distributed power source 12 of the general consumer 10 is directly supplied to the power grid 1.

  Since the management system 4 includes a charging station power management unit that manages the power information of the charging station storage battery 22 of the charging stand 20 of the electric vehicle, the management system 4 can manage the power information of the charging station storage battery 22.

  The storage battery 3 and the charging station storage battery 22 are connected via a power meter 21, and at least one of the storage battery 3 and the charging station storage battery 22 is charged or discharged. For example, when charging the electric vehicle 23, if there is no remaining charge in the charging station storage battery 22, power is temporarily stored in the charging station storage battery 22 from the storage battery 3 via the power meter 21, and then Electric power is charged from the storage battery 22 for the charging station to the electric vehicle 23.

  The management system 4 is connected to the building management system 32 of the building 30 through the communication network 2 and the power meter 31. The building management system 32 manages power information including power generated by the building distributed power source 33 of the building 30 and power consumed by the building load 34. When the building management system 32 manages how much power generated by the building distributed power source 33 is used in the building 30 and how much power is supplied to the storage battery 3, the management system 4, the building management system 32, To buy and sell electricity. As described above, the management system 4 includes a building power management unit that manages power information of the building management system 32 that manages power used in the building.

  It is also possible to buy and sell power via the power meter 31 without going through the building management system 32. Of course, in this case as well, power trading may be performed via the building management system 32 as described above.

  The management system 4 concludes a contract for managing a certain amount of usage each month with each of the power meters 11, 21, and 31. In the case where the amount of power used is low, it is stored in another month, and in the case of usage exceeding the contract, The stored power can be used.

  Further, the stored power can be stored in the charging stand 20 of the electric vehicle linked with the management system 4, and the contract user can use the stored power from the charging stand 20 of the electric vehicle.

  Moreover, the management system 4 has a storage battery operation part which turns ON / OFF the power transmission / reception with the storage battery 3, and ON / OFF of the storage battery in a some specific area from this management battery side by this storage battery operation part. Can be operated.

  In the first embodiment, for example, the storage battery 3 and the management system 4 are operated and maintained by a local public entity. Further, the operation and maintenance of the storage battery 3 and the management system 4 may not be performed by local public bodies or the like, but may be private companies.

  With the above configuration, a management system that manages storage batteries can be operated by local governments by separating the operation of power generated by customers who had previously required distribution control in real time from the management of the power company. By providing it, it becomes possible to trade electricity with high transparency.

Embodiment 2. FIG.
In the first embodiment described above, the management system 4 describes the system that manages the power storage information of the storage battery 3, the general consumer 10, the electric vehicle charging station 20, and the building 30. FIG. 2 is a schematic diagram showing a smart community system according to Embodiment 2 of the present invention. In FIG. 2, regarding region A, since it is the same configuration as in the first embodiment, description of the same reference numerals is omitted.

  As shown in FIG. 2, the storage system 103, the general consumer 110, the electric vehicle charging station 120, and a function that can easily add or delete the power information of the building 130 are provided, and the management system 104 includes the general consumer 110, Electricity sales contracts can be freely made with the charging station 120 and the building 130 of the electric vehicle.

  In this case, the management system 4 is connected to the management system 104, and power trading of the customer 110, the charging stand 120 of the electric vehicle, and the building 130 is performed by the management system 4 via the storage battery 103 and the management system 104. Can do.

  Therefore, when both the above-mentioned areas are merged due to the abolition of municipalities, etc., the management system 4 can collectively manage the power trading information of the storage battery 103, the customer 110, the electric vehicle charging station 120, and the building 25. .

  Since the management system 4 is connected to the management system 104 as described above, for example, when the storage battery 103 cannot supply power, the storage battery 3 is temporarily stored via the management system 4 and the management system 104. The power supply from can be performed.

  When the power charges in the region A and the region B are different, power information is exchanged between the management system 4 and the management system 104, and billing and payment processing are settled according to the contract with each customer.

  In the contract for managing a fixed amount of usage every month described in the first embodiment, when a customer contracted in the region A supplies power at the charging station 120 of the electric vehicle in the region B, the user charges for the region B. Make payments accordingly. In this case, since the storage battery 122 of the charging stand 120 of the electric vehicle is connected to the management system 104 via the power meter 121 and the communication network 102, customer information on the region A is sent to the management system 4 via the management system 104. Will be notified. The charging difference between the area A and the area B can be eliminated by performing calculation processing between the management system 4 and the management system 104.

  Therefore, with the above configuration, when there are multiple specific areas, the storage batteries in each area can be shared, so even if some of the storage batteries cannot be used due to a failure, etc. The storage battery can be shared and used.

  In addition, with the above configuration, when a customer who has a contract in a specific region buys and sells power in another region, the charge difference of the power purchase and sale can be eliminated by the management system of each region. .

DESCRIPTION OF SYMBOLS 1 Electric power network 2 Communication network 3 Storage battery 4 Management system 5 Central power supply command place 10 General customer 11 Electric power meter 12 Distributed type power supply 13 Load 20 Electric vehicle charging station 21 Electric power meter 22 Charging station storage battery 23 Electric vehicle 30 Building 31 Electric power meter 32 Building Management System 33 Distributed Power Supply 34 Building Load 101 Power Network 102 Communication Network 103 Storage Battery 104 Management System 105 Central Power Supply Command Station 110 General Consumer 111 Power Meter 112 Distributed Power Supply 113 Load 120 Electric Vehicle Charging Stand 121 Power Meter 122 Storage battery for charging station 123 Electric vehicle 130 Building 131 Electric power meter 132 Building management system 133 Distributed power supply 134 Building load

Claims (8)

A power grid that transmits and receives power and has power lines;
A communication network arranged in parallel with the power network, transmitting and receiving power information of the power network, and having a communication line;
A storage battery connected to the power network and the communication network;
A power meter connected to the storage battery via the power line and the communication line to obtain power information of a consumer,
A distributed power source connected to the power meter and supplying power to the storage battery via the power meter;
A smart community system comprising a management system connected to the power meter and the communication network via the communication line and managing a storage battery. The smart management system according to claim 1, wherein the management system includes a power supply trading unit that performs power trading with a power supply system in a higher system than the management system. 3. The smart community system according to claim 1, wherein the management system includes a power supply trading information transmitting unit that transmits power trading information with the power supply system to the power meter. The smart community system according to any one of claims 1 to 3, wherein the management system includes a storage battery operation unit that turns ON / OFF power transmission / reception with the storage battery. The smart management system according to any one of claims 1 to 4, wherein the management system includes a power data automatic acquisition unit that automatically acquires power information of the power meter. The smart according to any one of claims 1 to 5, wherein the management system includes a building power management unit that manages power information of a building management system that manages power used in a building. Community system. The smart community system according to any one of claims 1 to 6, wherein the management system includes a charging station power management unit that manages power information of a storage battery for a charging station of an electric vehicle. The smart community according to claim 7, wherein the storage battery and the storage battery for charging station are connected via the power meter, and one of the storage battery or the storage battery for charging station supplements the other to charge or discharge. system.

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