JP6147815B2 - Electricity interchange system and residential area equipped with the same - Google Patents

Description

  The present invention relates to an electric power interchange system for accommodating electric power among a plurality of buildings and a technology of a residential area having the electric power interchange system.

  2. Description of the Related Art Conventionally, a technology of an electric power accommodation system that accommodates electric power among a plurality of buildings has been publicly known. For example, as described in Patent Document 1.

  In the technique described in Patent Literature 1, a storage battery is provided in each of a plurality of houses, and the power of the storage battery charged in a time zone (such as midnight) where the electricity rate is low can be used in the house. In addition, power is accommodated from a house with a sufficient amount of storage battery charge to a house where power is insufficient. When accommodating electric power, the daily electric power consumption of each house is predicted, and the electric power interchange is determined based on the electric power usage and the charged amount of the storage battery. The control device accommodates electric power according to the determined accommodation amount.

JP 2010-220428 A

  However, in the technique described in Patent Document 1, it is necessary to determine the amount of power to be used by predicting the amount of power used, etc., in order to equip the power fairly. The power is accommodated according to the amount of accommodation. Therefore, there is room for improvement in that the configuration is complicated.

  The present invention has been made in view of the above situation, and a problem to be solved is a power interchange system capable of reducing an unfair feeling when accommodating power with a simple configuration, and the same Is to provide a residential block comprising

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, a power accommodation system for accommodating power between a plurality of buildings each having a load that consumes power, and is connected between each load of the plurality of buildings and a system power supply, A power distribution board that can supply power to each load of the plurality of buildings, and a power supply side that is provided in each of the plurality of buildings and that is connected to each load of the power distribution board. and individual power conditioner connected, is provided to each of the plurality of buildings, the individual electric storage device and the individual power generators connected to one another via the individual power conditioner, provided in each of the previous SL multiple buildings A first detector that is connected between the service distribution board and each load and detects the amount of power supplied from the service distribution board to the load of each building ; and Provided for each , Connected between the individual power conditioner and the pull distribution board, and a second detector for detecting an amount of power supplied from the individual power conditioner of each of the building to the retracted distribution board, Third detection is provided corresponding to each individual power conditioner, and detects the amount of power supplied from the system power supply side to each load side at the connection portion of the lead-in distribution board with each individual power conditioner Each of the individual power conditioners can supply power from the individual power storage device and the individual power generation device connected to the individual power conditioner to the power distribution board, When a load following operation is performed, the amount of power corresponding to the detection result of the third detection unit corresponding to each individual power conditioner is supplied to the lead-in distribution board .

  With a simple configuration, it is possible to reduce unfairness when power is accommodated.

Schematic which showed the smart city which comprises the power interchange system which concerns on 1st embodiment. The single line connection figure which showed the electric power interchange system which concerns on 1st embodiment. The figure which showed the outline | summary of the electric power sales contract seen from the electric power retailer. Schematic which showed the smart city which comprises the power interchange system which concerns on 2nd embodiment. The single line connection figure which showed the electric power interchange system which concerns on 2nd embodiment. Schematic which showed the smart city which comprises the power interchange system which concerns on 3rd embodiment. The single line connection figure which showed the electric power interchange system which concerns on 3rd embodiment. The single wire connection figure which showed the electric power interchange system which concerns on 4th embodiment.

  Below, the outline | summary of the smart city 1 which comprises the power interchange system 100 which concerns on 1st embodiment is demonstrated using FIG.

  The smart city 1 is a city built mainly for the purpose of effectively using energy. The smart city 1 according to the present embodiment assumes a residential block mainly composed of a plurality of detached houses. The smart city 1 is provided with an energy accommodation area 10 in which energy (mainly electric power) is exchanged between installed buildings and devices. In the energy accommodation area 10 according to the present embodiment, three houses (a first house 11, a second house 12, and a third house 13), a security light 14, and a quick charger 15 are provided.

  Three houses (the 1st house 11, the 2nd house 12, and the 3rd house 13) are buildings where people live. The house is provided with appropriate electrical products and consumes electric power. The house is provided with a solar power generation unit 114, a power storage device 115, and the like, which will be described later.

  The security light 14 is a street light installed for the purpose of crime prevention. The security light 14 is installed at an appropriate location in the energy interchange area 10.

  The quick charger 15 is a device for charging an electric vehicle. The quick charger 15 is installed at an appropriate location in the energy accommodation area 10.

  The three houses, the crime prevention light 14 and the quick charger 15 are respectively connected to a power distribution board 101 that draws in power from the grid power source S of the power company. The electric power from the system power source S is supplied to the three houses, the security light 14 and the quick charger 15 through the incoming distribution board 101. The power and the power generated by the solar power generation unit 114 are stored in the power storage device 115 as appropriate. In addition, surplus power in one of the houses (power that cannot be stored in the power storage device 115) is appropriately accommodated in the other houses where power is insufficient via the service distribution board 101.

  In the present embodiment, in consideration of future liberalization of power retailing, it is assumed that a power retailer purchases power from a power company in a lump and supplies the power to the three houses. Yes. Specifically, the power retailer has jurisdiction over the service distribution board 101. The electric power retailer appropriately sells the electric power purchased from the grid power source S of the electric power company to the three houses via the incoming distribution board 101. In addition, when there is surplus power in any of the three houses, the power retailer purchases the power (surplus power) and sells it to another house that lacks power. . In this manner, electric power is exchanged between the three houses in the energy accommodation area 10.

  Below, the detailed structure of the power interchange system 100 is demonstrated using FIG. The electric power interchange system 100 supplies electric power as appropriate and allows electric power to be interchanged between three houses (the first house 11, the second house 12, and the third house 13). The power interchange system 100 mainly includes a power distribution board 101, a sub-power meter 111, a power distribution board 112, a general circuit 113, a solar power generation unit 114, a power storage device 115, a power conditioner 116, a sub-power meter 117, and the like. It has.

  The service distribution board 101 distributes the power supplied to the smart city 1 as appropriate. The lead-in distribution board 101 is mainly composed of a parent power meter 102, a parent power meter 103, a first power extraction unit 104, a second power extraction unit 105, a first current sensor 106, a second current sensor 107, and a third current sensor. 108 is provided.

  In addition, in the following description, the positional relationship of each part is demonstrated on the basis of the distribution line L in the service distribution board 101. FIG. One end of the distribution line L is connected to the system power source S. In FIG. 2, the distribution line L is indicated by a line extending linearly from the system power supply S side to the right side of the drawing. In the following description, for the sake of convenience, in the direction in which the distribution line L extends (left and right direction in the drawing), the left side (side closer to the system power supply S) is referred to as the upstream side, and the right side is referred to as the downstream side.

  The parent power meter 102 detects the amount of power purchased by the service distribution board 101 from the system power source S (electric power company). The power purchase meter 102 is provided in the middle of the distribution line L (near the upstream end).

  The parent power meter 103 detects the amount of power sold by the incoming distribution board 101 to the system power source S (electric power company). The parent electricity meter 103 is provided in the middle of the distribution line L (on the downstream side of the parent electricity meter 102).

  The first power extraction unit 104 is a part that extracts electric power flowing through the distribution line L. The 1st electric power extraction part 104 is connected to the connection point P1 arrange | positioned in the middle part of the distribution line L (downstream side of the parent power meter 103). A security light 14 is connected to the first power extraction unit 104. The security light 14 can use electric power supplied from the system power source S via the incoming distribution board 101.

  The second power extraction unit 105 is a part that extracts electric power flowing through the distribution line L. The 2nd electric power extraction part 105 is connected to the connection point P2 arrange | positioned in the middle part (downstream side of the connection point P1) of the distribution line L. As shown in FIG. The quick charger 15 is connected to the second power extraction unit 105. The quick charger 15 can use electric power supplied from the system power supply S via the incoming distribution board 101.

  The first current sensor 106 detects the amount of power flowing through the distribution line L. The first current sensor 106 is provided in the middle of the distribution line L (on the downstream side of the connection point P2). The value detected by the first current sensor 106 is used for load following operation of the power storage device 115 provided in the first house 11 to be described later.

  The second current sensor 107 detects the amount of power flowing through the distribution line L. The second current sensor 107 is provided in the middle of the distribution line L (on the downstream side of the first current sensor 106). The detection value by the second current sensor 107 is used for load following operation of the power storage device 115 provided in the second house 12 described later.

  The third current sensor 108 detects the amount of power flowing through the distribution line L. The third current sensor 108 is provided in the middle of the distribution line L (on the downstream side of the second current sensor 107). The value detected by the third current sensor 108 is used for load following operation of the power storage device 115 provided in the third house 13 described later.

  The sub-power meter 111, the distribution board 112, the general circuit 113, the solar power generation unit 114, the power storage device 115, the power conditioner 116, and the sub-power meter 117 are connected to each house (first house 11, second house 12 and It is provided in each of the third houses 13). Therefore, in the following, only the sub-electricity meter 111 etc. provided in the first house 11 will be described in detail, and the sub-electricity meter 111 etc. provided in other homes are different from those provided in the first house 11. Only the point will be briefly described.

  The sub-electricity purchase meter 111 detects the amount of power purchased (purchased) by the first house 11 via the service distribution board 101. The sub-electricity purchase meter 111 is provided in the first house 11. The sub power purchase meter 111 is connected to a connection point P3 arranged at the downstream end of the distribution line L.

  The distribution board 112 appropriately distributes the power supplied to the first house 11. The distribution board 112 is connected to the sub power purchase meter 111.

  The general circuit 113 is provided in the first house 11 and supplies power to an appropriate electrical product or the like (power load). The general circuit 113 is connected to the distribution board 112 and receives the power distributed by the distribution board 112.

  The solar power generation unit 114 is a device that generates power using sunlight. The solar power generation unit 114 is installed in a sunny place such as on the roof of the first house 11.

  The power storage device 115 is a device that can charge and discharge electric power. The power storage device 115 includes a storage battery made of a lithium ion battery, a nickel hydride battery, or the like that can charge and discharge power, a charger that rectifies supplied AC power and charges the storage battery.

  The power conditioner 116 is a hybrid power conditioner connected to the solar power generation unit 114 and the power storage device 115. The power conditioner 116 includes a conversion device that appropriately converts DC power and AC power, a control unit that controls the conversion device, and the like. The power conditioner 116 is connected to the distribution board 112 of the first house 11. In FIG. 2, a part of the distribution line that connects the power conditioner 116 and the distribution board 112 is omitted. Further, the power conditioner 116 is connected to a connection point P <b> 6 disposed in the middle of the distribution line L (on the downstream side of the first current sensor 106 and on the upstream side of the second current sensor 107). Moreover, the power conditioner 116 can receive the detection value (the amount of power flowing through the distribution line L) by the first current sensor 106.

  The power conditioner 116 can appropriately convert the power generated by the solar power generation unit 114 and the power discharged from the power storage device 115 and supply the converted power to the distribution board 112 of the first house 11. Further, the power conditioner 116 can supply (accumulate) the electric power supplied from the distribution board 112 (electric power from the system power supply S) to the power storage device 115. Further, the power conditioner 116 can sell (power sale) the electric power generated by the solar power generation unit 114 via a sub power meter 117 described later. Further, the power conditioner 116 can perform load following operation (control based on electric power used via the general circuit 113) based on the detection value of the first current sensor 106.

  The sub-electricity sales meter 117 detects the amount of power sold (sold) by the first house 11 via the service distribution board 101. The sub power meter 117 is disposed between the power conditioner 116 and the interconnection point P6.

  Similarly to the first house 11, the second house 12 and the third house 13 also have a sub-electricity meter 111, a distribution board 112, a general circuit 113, a solar power generation unit 114, a power storage device 115, a power conditioner 116, and a child. A power sale meter 117 is provided.

  The sub-electricity meter 111 of the second house 12 is connected to an interconnection point P4 arranged in the middle of the distribution line L (downstream side of the third current sensor 108 and upstream side of the interconnection point P3). The The sub-electricity purchase meter 111 of the third house 13 is connected to a connection point P5 disposed in the middle of the distribution line L (downstream side of the third current sensor 108 and upstream side of the connection point P4). The

  The power conditioner 116 (child power meter 117) of the second house 12 is disposed in the middle of the distribution line L (on the downstream side of the second current sensor 107 and on the upstream side of the third current sensor 108). Connected to interconnection point P7. The power conditioner 116 (child power meter 117) of the third house 13 is connected to the middle of the distribution line L (on the downstream side of the third current sensor 108 and on the upstream side of the connection point P5). Connected to the system point P8.

  Hereinafter, a state in which power is interchanged between the three houses by the power interchange system 100 configured as described above will be described.

  The electric power retailer purchases electric power from the grid power source S of the electric power company, and supplies the electric power to the three houses as appropriate through the service distribution board 101.

  In each house, the power conditioner 116 performs the load following operation of the power storage device 115. Specifically, the power storage device 115 is charged / discharged according to the amount of power (electric power load) required from the general circuit 113. At this time, the power generated in the solar power generation unit 114 is utilized as much as possible (supplied to the general circuit 113 or stored in the power storage device 115), so that the purchased power can be reduced and economical. The burden can be reduced.

  In each house, the power purchased from the service distribution board 101 (power retailer) is used as necessary. The electric power is detected by the sub power purchase meter 111. The power retailer can grasp the amount of power purchased by each house from the power retailer from the detection value of the sub-electricity meter 111.

  In addition, although the power is generated by the solar power generation unit 114 of each house, the surplus power (surplus power) that is not used in the house is appropriately sold to the distribution board 101 (power retailer). The The electric power is detected by a sub power meter 117. The electric power retailer can grasp the amount of electric power that each house has sold to the electric power retailer from the detected value of the sub power meter 117.

  The electric power sold by each house to a power retailer is supplied to the distribution line L via the connection point P6, the connection point P7, or the connection point P8. The electric power can be further supplied from the downstream connection point P3, the connection point P4, or the connection point P5 to each house. That is, the electric power sold from each house to the electric power retailer can be supplied (accommodated) to another house where power is insufficient via the service distribution board 101.

  In this way, each house can exchange power with each other simply by using power (buying or selling power) as usual without requiring special equipment or control. At this time, the amount of power sold and sold by each house is detected by the sub-electricity meter 111 and the sub-power meter 117 provided in each house, and can be grasped by the power retailer. For this reason, the power generated by the solar power generation unit 114 of a certain house is prevented from being used in other houses without knowing it, thereby reducing the sense of unfairness when accommodating power. can do.

  In addition, since power is interchanged between the three houses in this way, it is possible to improve the self-sufficiency rate of power in the three houses. That is, the power purchased from the grid power source S of the power company can be reduced by accommodating the power shortage in one house from another house. In addition, since power is interchanged between a plurality of houses in this manner, the power generation capacity (power generation amount, power generation efficiency, etc.) of the solar power generation unit 114 of each house and the power storage capacity of the power storage device 115 can be suppressed. Thereby, the capital investment of each house can be suppressed.

  Note that the power generation capacity of the solar power generation unit 114 and the storage capacity of the power storage device 115 are preferably designed so that the power can be completely self-supplied in the three houses on a sunny day.

  Below, the advantage of an electric power retailer and each house (resident) by using the above-mentioned electric power interchange system 100 is demonstrated using FIG. For the explanation, FIG. 3 shows an outline (specific example) of an electric power sales contract between an electric power company, an electric power retailer, and each house.

  A power retailer signs a contract with a power company according to time (specifically, a plan with a low nighttime electricity charge and a high daytime electricity charge) and purchases (receives) power in a lump ((Fig. 3 ( A)). In addition, a power retailer supplies (sells) electric power to each house at a fixed price throughout the day (however, it is more expensive than the nighttime electricity rate in a contract by time zone) (see FIG. 3B). . At this time, the power storage device 115 of each house stores the low-priced power purchased by the power retailer from the power company at night.

  A power retailer purchases surplus power from each house at a price lower than a fixed purchase price (the price of power when selling power to a power company) (see FIG. 3C). The power retailer sells surplus power to a power company at a fixed purchase price (see FIG. 3D).

  In such an example, the electric power retailer makes the difference between the fixed purchase price (see (D) of FIG. 3) and the purchase price from each house (see (C) of FIG. 3), and the nighttime power charge. A profit can be obtained from the difference between the power charge (see FIG. 3B) when selling to each house (see FIG. 3A).

  Each house (resident) can purchase electric power from a power retailer with a plan that is cheaper than a normal pay-per-use light contract. In addition, although the unit price is lower than the fixed purchase price, a profit can be obtained by selling the power to a power retailer. In addition, with the installation of the power storage device 115 at home (house), the power stored in the power storage device 115 can be used during a power failure.

As described above, the power interchange system 100 according to the present embodiment is
An electric power interchange system 100 for accommodating electric power between three houses (buildings) where electric power is consumed,
A power storage device 115 (individual power storage device) provided in each of the three houses;
A solar power generation unit 114 (individual power generation device) provided in each of the three houses;
A lead-in distribution panel 101 (distribution panel) connected to the three houses and capable of supplying power from the system power source S to the three houses;
A sub-electricity meter 111 (first detection unit) that is provided in each of the three houses and detects the amount of power supplied from the incoming distribution board 101 to the houses;
A sub-sale meter 117 (second detection unit) that is provided in each of the three houses and detects the amount of power supplied from each house to the incoming distribution board 101;
It comprises.
By comprising in this way, the unfair feeling at the time of accommodating electric power can be reduced with a simple structure. That is, power can be accommodated without using a complicated configuration (device, control method, etc.). In addition, by confirming the detection values by the sub-electricity purchase meter 111 and the sub-electricity sales meter 117, it is possible to reduce unfairness when accommodating power.

In addition, the power interchange system 100
What is further provided with the 1st electric power extraction part 104 and the 2nd electric power extraction part 105 (electric power extraction part) which were provided independently from the said 3 houses and can take out the electric power supplied from the service distribution board 101 is provided. It is.
By comprising in this way, electric power can be supplied to the electrical product etc. which are provided independently of a house.

In addition, the power interchange system 100
A parent power meter 102 (collective power purchase detector) for detecting the amount of power purchased from the system power source S to the power distribution board 101;
A parent power meter 103 (collective power sale detection unit) that detects the amount of power sold from the service distribution board 101 to the system power source S;
Is further provided.
By comprising in this way, the electric energy purchased and sold collectively can be grasped | ascertained via the service distribution board 101. FIG. As a result, the power retailer can calculate the profits from buying and selling power.

In addition, the smart city 1 (residential block) according to this embodiment is
A power interchange system 100;
An energy accommodation area 10 (power accommodation area) configured to allow electricity to be exchanged between a plurality of buildings by the power accommodation system 100;
A plurality of houses (accommodation houses) provided in the energy accommodation area 10;
It comprises.
By comprising in this way, the unfairness at the time of accommodating electric power can be reduced with a simple structure between several houses. That is, power can be accommodated without using a complicated configuration (device, control method, etc.).

The three houses (the first house 11, the second house 12, and the third house 13) are an embodiment of a building and a flexible house.
Power storage device 115 is an embodiment of an individual power storage device.
Moreover, the solar power generation unit 114 is an embodiment of the individual power generation device.
The service distribution board 101 is an embodiment of a distribution board.
The sub-electricity purchase meter 111 is an embodiment of the first detection unit.
Moreover, the sub power meter 117 is an embodiment of the second detection unit.
Moreover, the 1st electric power extraction part 104 and the 2nd electric power extraction part 105 are one Embodiment of an electric power extraction part.
The parent power purchase meter 102 is an embodiment of a collective power purchase detection unit.
The parent power meter 103 is an embodiment of a collective power sale detection unit.
Smart city 1 is an embodiment of a residential block.
The energy accommodation area 10 is an embodiment of a power accommodation area.

  Although the first embodiment has been described above, the present invention is not limited to the above-described configuration, and various modifications can be made within the scope of the invention described in the claims.

  For example, the building is not limited to a house (for the purpose of living), but may be various other buildings.

  In addition, the individual power generation device is not limited to the solar power generation unit 114, and may be another device capable of generating power (for example, a power generation device (such as a wind power generation device) using natural energy or a fuel cell).

  Moreover, the number of houses in the residential block is not limited to three, and any number of houses can be provided.

  Below, the electric power interchange system 200 which concerns on 2nd embodiment is demonstrated using FIG.4 and FIG.5. The power accommodation system 200 according to the second embodiment mainly differs from the power accommodation system 100 according to the first embodiment in that it includes an independent solar power generation unit 201, an independent power storage device 202, and an independent power conditioner 203. It is a point to do. Therefore, below, the said difference is demonstrated and the same code | symbol is attached | subjected about the structure similar to 1st embodiment other than that, and description is abbreviate | omitted.

  The independent solar power generation unit 201 illustrated in FIG. 5 is a device that generates power using sunlight. The independent solar power generation unit 201 is installed in a sunny place such as the upper part of the adjustment pond.

  The independent power storage device 202 is a device that can charge and discharge electric power. The independent power storage device 202 includes a storage battery such as a lithium ion battery or a nickel metal hydride battery that can charge and discharge power, a charger that rectifies supplied AC power and charges the storage battery. The independent power storage device 202 is installed in a disaster prevention warehouse or the like.

  The independent power conditioner 203 is a hybrid power conditioner connected to the independent photovoltaic power generation unit 201 and the independent power storage device 202. The independent power conditioner 203 is connected to a connection point P9 disposed in the middle of the distribution line L (on the downstream side of the parent power meter 103 and on the upstream side of the connection point P1). The independent power conditioner 203 also detects the value detected by the fourth current sensor 204 (the distribution line L is connected to the middle of the distribution line L (on the downstream side of the parent power meter 103 and on the upstream side of the connection point P9)). The amount of power distributed) can be received.

  The independent power conditioner 203 can appropriately convert the power generated by the independent solar power generation unit 201 and the power discharged from the independent power storage device 202 and supply the converted power to the incoming distribution board 101. The independent power conditioner 203 can supply (accumulate) the electric power (electric power from the system power source S) supplied from the incoming distribution board 101 to the independent electric storage device 202. The independent power conditioner 203 can perform a load following operation based on the detection value of the fourth current sensor 204.

  The independent photovoltaic power generation unit 201, the independent power storage device 202, and the independent power conditioner 203 configured as described above are provided in a facility (the common station 21) configured by the adjustment pond, the disaster prevention warehouse, and the like. The common station 21 is a facility provided independently of the three houses. The common station 21 is installed in the energy accommodation area 10 (see FIG. 4). The common station 21 is controlled by a power retailer.

  In the power interchange system 200 configured as described above, it is possible to generate power even in the joint station 21 under the jurisdiction of a power retailer or store inexpensive nighttime power. The electric power from the common station 21 can be accommodated to the three houses connected to the downstream side of the distribution line L. The power self-sufficiency rate in the energy accommodation area 10 can be further improved by performing power interchange among the three houses including the power.

  It is desirable that the power generation capacity of the solar power generation unit 114 and the storage capacity of the power storage device 115 are designed so that the three houses and the common station 21 can completely supply power on a sunny day.

As described above, the power interchange system 200 according to the present embodiment is
The apparatus further includes an independent power storage device 202 provided independently of the three houses and connected to the service distribution board 101.
With this configuration, the power stored in the independent power storage device 202 can be accommodated in three houses. Thereby, the interchange of electric power can be performed smoothly and the self-sufficiency rate of electric power can be improved more.

In addition, the power interchange system 200
The apparatus further includes an independent solar power generation unit 201 (independent power generation apparatus) that is provided independently of the three houses and is connected to the incoming distribution board 101.
By comprising in this way, the electric power generated by the independent solar power generation unit 201 can be accommodated in three houses. Thereby, the interchange of electric power can be performed smoothly and the self-sufficiency rate of electric power can be improved more.

  The independent solar power generation unit 201 is an embodiment of the independent power generation apparatus.

  Although the second embodiment has been described above, the present invention is not limited to the above-described configuration, and various modifications can be made within the scope of the invention described in the claims.

  For example, the independent power generation device is not limited to the independent solar power generation unit 201, and may be another device capable of generating power (for example, a power generation device (such as a wind power generation device) using natural energy or a fuel cell).

  Below, the electric power interchange system 300 which concerns on 3rd embodiment is demonstrated using FIG.6 and FIG.7. The power interchange system 300 according to the third embodiment is mainly different from the power interchange system 200 according to the second embodiment in that a solar power generation unit 304 and a power storage device 305 provided in the fourth house 31 are provided. It is a point to have. Therefore, below, the said difference is demonstrated and the code | symbol same about the structure similar to 2nd embodiment is attached | subjected, and description is abbreviate | omitted. Moreover, in FIG. 7, the 2nd house 12 and the 3rd house 13 are simplified and shown suitably.

  As shown in FIG. 6, in addition to the energy accommodation area 10, the smart city 1 including the electricity accommodation system 300 is an energy self-sufficiency area in which energy (mainly power) is not exchanged between installed buildings and equipment. 30 is provided. A fourth house 31 is provided in the energy self-sufficiency area 30.

  As shown in FIG. 7, the fourth house 31 includes a sub-electricity meter 301, a distribution board 302, a general circuit 303, a solar power generation unit 304, a power storage device 305, a power conditioner 306, and a sub-electricity meter 307. Is provided.

  The sub-electricity purchase meter 301, the distribution board 302, the general circuit 303, the solar power generation unit 304, the power storage device 305, the power conditioner 306, and the sub-electricity sale meter 307 are provided in the first house 11 or the like. The meter 111, the distribution board 112, the general circuit 113, the solar power generation unit 114, the power storage device 115, the power conditioner 116, and the sub power sales meter 117 have substantially the same configuration. Therefore, below, a different point from the sub-electricity meter 111 grade | etc., Provided in the 1st house 11 grade | etc., Is demonstrated.

  The solar power generation unit 304 provided in the fourth house 31 is configured to have higher power generation capacity (power generation amount, power generation efficiency, etc.) than the solar power generation unit 114 provided in the first house 11 and the like. In addition, the power storage device 305 provided in the fourth house 31 is configured to have a larger storage capacity than the power storage device 115 provided in the first house 11 or the like. As a result, the fourth house 31 can ensure a high power self-sufficiency rate without performing power interchange with other houses.

  The sub-electricity purchase meter 301 of the fourth house 31 is connected to an interconnection point P10 that is arranged in the middle of the distribution line L (upstream of the main electric purchase meter 102). Further, the sub-electricity sales meter 307 of the fourth house 31 is connected to a connection point P11 disposed in the middle part of the distribution line L (upstream side of the connection point P10). In addition, the power conditioner 306 of the fourth house 31 is detected by the fifth current sensor 308 provided in the middle part of the distribution line L (upstream of the connection point P11) (the amount of power flowing through the distribution line L). Can be received.

  Thus, the photovoltaic power generation unit 304 and the power storage device 305 provided in the fourth house 31 are arranged more than other houses (first house 11, second house 12 and third house 13) and the common station 21. On the upstream side of the electric wire L, it is connected to the incoming distribution board 101.

  In the power accommodation system 300 configured as described above, the power from the first house 11, the second house 12, the third house 13, and the common station 21 is not accommodated in the fourth house 31. As a result, in the smart city 1, an energy interchange area 10 (first house 11 or the like) in which electric power is interchanged with each other and an energy self-sufficiency area 30 in which electric power is not interchanged with respect to one electric power pull-in (inductive distribution board 101). (Fourth house 31).

As described above, the smart city 1 according to the present embodiment is
One fourth house 31 (self-sufficient house) provided in an area (energy self-sufficiency area 30) different from the energy accommodation area 10,
A power storage device 305 (self-contained power storage device) provided in the fourth house 31;
A solar power generation unit 304 (self-sufficient power generation device) provided in the fourth house 31;
Is further provided.
By comprising in this way, it can have both the three houses provided in the energy accommodation area 10, and the 4th house 31 provided in the other area (energy self-sufficiency area 30). This can expand the range of housing options.

Note that power storage device 305 is an embodiment of a self-contained power storage device.
Moreover, the solar power generation unit 304 is an embodiment of a self-sufficient power generation apparatus.

  Although the third embodiment has been described above, the present invention is not limited to the above-described configuration, and various modifications can be made within the scope of the invention described in the claims.

  For example, the self-sufficient power generation apparatus is not limited to the solar power generation unit 304 but may be any other power generation apparatus (for example, a power generation apparatus using natural energy (such as a wind power generation apparatus) or a fuel cell).

  In addition, although the connection point P10 and the connection point P11 are arranged upstream of the parent power meter 102, the common station 21 (connection point P9) and the three houses (connection point P6, etc.) It suffices if it is arranged on the upstream side. For example, the connection point P <b> 10 and the connection point P <b> 11 can be disposed downstream of the parent electricity purchase meter 102 and upstream of the fourth current sensor 204.

  In addition, the self-sufficiency house can also make power interchangeable with other houses according to the resident's wishes and the like. In this case, the connection position and the like of the distribution lines are appropriately changed so that power can be interchanged with other houses.

  Below, the electric power interchange system 400 which concerns on 4th embodiment is demonstrated using FIG. The power interchange system 400 according to the fourth embodiment is mainly different from the power interchange system 200 according to the second embodiment in that the V2H system 40 is provided. Therefore, below, the said difference is demonstrated and the code | symbol same about the structure similar to 2nd embodiment is attached | subjected, and description is abbreviate | omitted. Moreover, in FIG. 8, the 2nd house 12 and the 3rd house 13 are simplified and shown suitably.

  The V2H (Vehicle to Home) system 40 refers to the electric power stored in a power storage device of an automobile such as an electric vehicle (EV), a plug-in hybrid vehicle (PHV), and a fuel cell vehicle (FCV). It is for use in one house 11 or the like. The V2H system 40 mainly includes a solar power generation unit 401, an EV 402, a power conditioner 403, and the like.

  The power conditioner 403 is connected to a connection point P12 disposed in the middle of the distribution line L (on the downstream side of the parent power meter 103 and on the upstream side of the fourth current sensor 204). In addition, the power conditioner 403 is a value detected by the sixth current sensor 404 (distributed through the distribution line L) provided in the middle of the distribution line L (on the downstream side of the parent power meter 103 and on the upstream side of the connection point P12). Power amount) to be received.

  In addition, since the structure of the solar power generation part 401 and the power conditioner 403 is substantially the same as the structure of the independent solar power generation part 201 and the independent power conditioner 203, description is abbreviate | omitted.

  The EV 402 includes a power storage device that can charge and discharge electric power. The EV 402 can be connected to the power conditioner 403. When the EV 402 is connected, the power conditioner 403 can accommodate the electric power stored in the power storage device of the EV 402 to the first house 11 or the like. Moreover, the electric power from the system | strain power supply S can be suitably stored in the electrical storage apparatus of EV402.

  In addition, when providing the V2H system 40 in the power interchange system 400, the quick charger 15 as shown in 2nd embodiment etc. becomes unnecessary.

  Further, in the example of FIG. 8, the example in which the EV 402 is connected to the power conditioner 403 is shown, but it is also possible to connect PHV, FCV, or the like instead of the EV 402.

DESCRIPTION OF SYMBOLS 1 Smart city 10 Energy interchange area 100 Power interchange system 101 Power distribution board 102 Parent electricity meter 103 Parent electricity meter 104 First electricity extraction part 105 Second electricity extraction part 111 Child electricity meter 114 Solar power generation part 115 Electricity storage Device 117 Child electricity meter

Claims (7)

A power interchange system for accommodating power among a plurality of buildings each having a load that consumes power ,
A lead-in distribution board connected between each load of the plurality of buildings and a system power supply and capable of supplying power from the system power supply to each load of the plurality of buildings;
An individual power conditioner that is provided in each of the plurality of buildings and is connected to a system power supply side from a connection portion with each load of the lead-in distribution board,
An individual power storage device and an individual power generation device provided in each of the plurality of buildings and connected to each other via the individual power conditioner ;
Provided in each of the previous SL multiple buildings, it is connected between the pull-distribution board each load, to detect the amount of power supplied from the pull-distribution board to the said load of each building first A detection unit;
The amount of electric power provided to each of the plurality of buildings , connected between the service distribution board and the individual power conditioner , and supplied from the individual power conditioner of the building to the service distribution board A second detector for detecting
Third detection is provided corresponding to each individual power conditioner, and detects the amount of power supplied from the system power supply side to each load side at the connection portion of the lead-in distribution board with each individual power conditioner And
Comprising
Each of the individual inverters is
The individual power conditioners connected to the individual power conditioners can be supplied with power from the individual power storage devices and the individual power generation devices to the power distribution panel, and when the load following operation is performed, the individual power conditioners Supplying the amount of power corresponding to the detection result of the third detection unit corresponding to the power distribution board,
Power interchange system. An independent power conditioner that is provided independently of the plurality of buildings, and that is connected to a system power supply side from a connection portion with each individual power conditioner of the lead-in distribution board;
An independent power storage device and an independent power generation device provided independently of the plurality of buildings and connected to each other via the independent power conditioner ;
Further comprising a,
The power interchange system according to claim 1. Provided independently from the plurality of buildings , connected between the connection portion of the lead-in distribution board with each individual power conditioner and the connection portion of the independent power conditioner, from the lead-in distribution board A power extraction unit capable of extracting the supplied power ;
Power interchange system according to 請 Motomeko 2. Collective power purchase detection unit for detecting the amount of power purchased from the system power supply to the service distribution board,
Collective power sale detection unit for detecting the amount of power sold from the service distribution board to the system power supply,
Further comprising a,
The collective power purchase detection unit and the collective power sale detection unit are connected to the system power supply side of the incoming distribution board in the power interchange system.
The electric power interchange system as described in any one of Claim 1- Claim 3.   Provided in each of the plurality of buildings, further comprising an individual distribution board connected between the first detection unit and each load,
  The electric power interchange system as described in any one of Claim 1- Claim 4. The power interchange system according to any one of claims 1 to 5,
A power accommodation area configured to allow power accommodation between a plurality of buildings by the power accommodation system;
A plurality of accommodation houses provided in the electricity accommodation area;
A residential area with One self-sufficient house provided in an area different from the power interchange area;
A self-sufficient power conditioner provided in the self-sufficient house and connected to a system power supply side rather than a device of the power accommodation system of the lead-in distribution board;
A self- contained power storage device and a self-sufficient power generation device provided in the self-sufficient house and connected to each other via the self-sufficient power conditioner ;
Further comprising
The residential block according to claim 6.

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