JP4299177B2 - Power distribution system in apartment houses - Google Patents

Description

  In the present invention, a solar cell panel is arranged on the roof or wall surface of an apartment house, the electric power generated by the solar cell panel is sold to an electric power company, and the value of the sale is distributed to individual houses in the apartment house. The present invention relates to a power distribution system in an apartment house that can distribute or distribute electric power generated by a solar panel to individual houses in the apartment house.

  In recent years, a power generation system using sunlight has been developed mainly from the viewpoint of conservation of the global environment. Recently, a solar cell panel is installed on the rooftop of a detached house, and the generated power is used preferentially in the home where the solar cell panel is installed, and the surplus power is sold to a power company. It has been put into practical use.

  Even in apartment houses such as apartments, condominiums, and company houses, it is desirable to install large-scale solar panels on the rooftop, for example, and to use the power generated by this, but the configuration and management of these apartment houses are multidimensional. Therefore, it is necessary to develop a power distribution system different from that for detached houses. For example, it is conceivable to preferentially use the power generated by the solar cell panel for shared facilities such as the lamps and halls of apartment buildings and hallways, and sell the surplus power.

  Therefore, a system that not only preferentially consumes the power generated by the solar panel in the shared facilities but also distributes the consideration obtained by selling the power to the power company or the power generated by the solar panel to each house. It is possible to adopt.

  Even when using the power generated by solar panels in each house, if the power generated by the solar panels is more than the power consumed in the entire apartment complex, sell surplus power to the power company become. Various methods can be considered as a method of disposing of profits from this power sale. For example, it is conceivable to integrate the power sales revenue into the assets of the management association or distribute the power sales revenue to each house. Thus, when distributing to each house, various aspects can be considered also about how to distribute.

  For example, power sales revenue is distributed according to the power consumption of each house, distributed according to the occupied area of each house, distributed according to the rent of each house, and the power consumption and occupation of each house. It is conceivable to distribute uniformly regardless of the area. In recent apartments, each resident has formed a management association, and this management association has a widespread management and operation system. The management association also determines the distribution of revenues from power sales. . However, it is expected that there will be a wide variety of ways to distribute electricity sales revenue among individual management associations. Therefore, when constructing a system that distributes the power generated by the solar panel, it is necessary to construct a power distribution system that is suitable for each apartment house, which is extremely troublesome, time consuming and costly. There is a problem that it is bulky.

An object of the present invention is to solve the above-mentioned problems, install a large-sized solar cell panel using a large roof area or the like of an apartment house, effectively use the generated power here, and sell power to an electric power company. certain revenue and to provide a power distribution system in apartment building can be reduced to the housing.

In order to achieve the above object, a power distribution system in an apartment house according to the present invention comprises a solar cell panel arranged on the outer surface of the apartment house, and each of the component houses of the apartment house generates electric power generated by the solar cell panel. / Or power distribution system in collective housing that distributes power from a power company to each component house and / or common area when power is preferentially distributed to common areas and power generation by the solar panel is insufficient. The power distribution means for distributing power to each constituent house and / or common part, and the power distribution means arranged between the power distribution means and the power company, and the total amount of power purchased by the entire housing complex from the power company Measuring the amount of electric power sold to the electric power company out of the electric power generated by the solar panel disposed between the electric power measuring means to measure and the electric power distribution means and the electric power company A power sale power measuring means, and a plurality of door-to-door power measuring means for measuring separately the amount of power supplied to each component housing and common areas of the apartment, the power from the total power measured by the house-to-house power consumption measuring means A power generation amount calculating means for subtracting the amount of power purchased from the company and further adding the amount of power sold to the power company to calculate the amount of power generated by the solar cell panel, and generating power by the solar cell panel A plurality of door-to-door solar power measuring means for individually measuring the amount of power supplied to each constituent house of the apartment house, and a power purchase price is calculated from the power purchase amount and the power purchase unit price measured by the power purchase power measurement means and, wherein the power sale power measuring means calculates the power sale price from the power sale power quantity, and power sale bid measured, calculate the amount obtained by subtracting the selling price of electricity from the power purchase price as electricity rate paid to the power company And, the amount obtained by multiplying the consumption ratio of the amount of power consumption for each component housing to the total power consumption of the house-to-house power consumption measuring means of all the structural housing and a shared portion to electrical rates were obtained by the power generation amount calculating means Add the amount of power generation and the planned power sale price multiplied by the unit price of power sales to the amount multiplied by the consumption rate of the power consumption of all the constituent homes, and then divide the planned power selling price by the number of constituent homes. And a calculation means for calculating the subtracted amount as an electric bill for each house billed to each of the constituent houses.

  According to the power distribution system in an apartment house concerning the present invention, a constituent house can enjoy the profit by the electric power obtained by the solar cell panel.

[ Reference Example 1]
FIG. 1 shows a schematic diagram of a power distribution system according to the first reference example . A solar cell panel 1 is installed on a roof portion of an apartment (not shown), and this solar cell panel 1 is connected to power distribution means 3 via a cable 2. The power distribution means 3 is connected to a power line such as a utility pole of the power company 6 via the power purchase cable 4 and the power sale cable 5, respectively, and the power generation amount of the solar panel 1 can be transmitted to the power company 6 via the power sale cable 5. Has been. Between the power purchase cable 4 and the power distribution means 3, a power purchase meter M1 for measuring the power purchased from the power company 6 in the entire apartment is provided. A power sale meter M2 for measuring the power sold to the company 6 is provided.

  Further, the power distribution means 3 is connected to each of four houses A to D in the apartment, for example, via a cable 7, and power meters Ma to Md for measuring the power consumption of each house and the common equipment E A power meter Me for measuring power consumption is provided.

  The power distribution means 3 is connected to a central processing unit 8 incorporating a CPU and a memory for controlling the power distribution system of the entire apartment. The central processing unit 8 is also connected to power meters Ma to Me via signal lines 9a to 9e, and to a power purchase meter M1 and a power sale meter M2 via signal lines 10 and 11, respectively. Data of M2 and power meters Ma to Me are constantly received. Further, the central processing unit 8 monitors various conditions such as the distribution method and the status of the input device 12 for inputting the name of the resident, the power purchase meter M1, the power sale meter M2, and the power meters Ma to Me. The monitor 13 is connected.

The amount of electricity generated by the solar panel 1 for one month is P, the amount of electricity for one month purchased from the power company 6 through the power purchase cable 4 is B, and the power company 6 is obtained through the power sale cable 5. Assuming that the amount of electricity sold for one month is S, the amount of electricity consumed for each month of houses A to D is ma to md, and the amount of electricity used in the common facility E is me, 1) is established.
P + B-S = ma + mb + mc + md + me (1)

From this equation (1), the power generation amount P for one month of the solar cell panel 1 can be obtained by equation (2).
P = ma + mb + mc + md + me−B + S (2)

  The owner of the apartment only needs to make a contract with the power company 6, and every month, the electricity purchase price Zb = (the amount of electricity purchased B) × (the electricity purchase price Ys) and the electricity sale price Zs = (the amount of electricity sold S) Based on x (power selling unit price Yb), the electricity bill Z = Zb−Zs may be paid to the electric power company 6. And an owner charges an electricity bill to the A-D house of an apartment, and the time and labor which each house contracts with the electric power company 6 is reduced each time it moves.

  The central processing unit 8 pays the electric power company 6 for the entire apartment, the electricity meters Ma to Md of the A to D homes, and the power meter Me of the common facility E to the A to D homes for one month. The electricity charge of the common facility E is calculated.

For example, the monthly electricity bill Za for A's house can be expressed by equation (3).
Za = ma / (ma + mb + mc + md + me) · Z (3)

  Similarly, it is possible to calculate the monthly electricity bill for BD. Note that a basic charge can be added to the electricity charge Za.

In this reference example 1 , according to the formula (2), the power amount P of the solar cell panel 1 is determined by the central processing unit 8 using the power purchase meter M1, the power sale meter M2, the power meters Ma to Md of the A to D homes, and the common equipment E. Although it was calculated by calculation based on the data of the power meter Me, a power meter for measuring the output of the solar cell panel 1 may be provided.

[ Reference Example 2]
In Reference Example 1, all of the power generation amount P generated in the solar cell panel 1 is sold to the electric power company 6, but in general, the unit price of electricity is lower than the unit price of power purchase. The generated power is sold at a low price, and each house must purchase the power from the power company 6 at a high price .

Therefore, in Reference Example 2 , the cable 2 connected to the solar cell panel 1 is connected to each house via the power distribution means 3 and the cable 7, and the power generated in the solar cell panel 1 is sold to the power company 6. Is also preferentially distributed to the shared facilities E and each of the houses A to D in the apartment, and the generated power becomes surplus without being used up in the shared facilities E and A to D houses. The surplus power is sold to the power company 6 through the power sale cable 5.

  Thereby, the power purchase amount from the electric power company 6 of the whole apartment can be suppressed by the electric power generation in the solar cell panel 1.

  Moreover, when the electric power generated by the solar panel 1 is preferentially used in the shared facilities E and the houses A to D of the apartment, when there is a margin in the output of the solar panel 1 in the entire apartment, the electric power company 6 Electricity can be used by the inexpensive solar cell panel 1 instead of expensive electricity purchased from the factory.

In Reference Example 2 , a person staying at home during the day when the solar panel 1 generates power can enjoy free power generated by the power generation of the solar panel 1, but a single office worker who tends to be absent during the day uses much power. There is a case where the profit cannot be received and an unfair feeling may be felt. In the first embodiment, each of the houses A to D receives the power generated by the solar battery panel 1 almost equally.

  In the present Example 1, it reflects in the electricity bill of each house of A-D house according to the ratio using the electric power generated with the solar cell panel 1. FIG.

By the following formula (4), the planned power sale price Q can be obtained by multiplying the power generation amount P of the solar cell panel 1 for one month by the power sale unit price Ys.
Q = P · Ys (4)

In addition, the central processing unit 8 samples and integrates data of the power purchase meter M1, the power sale meter M2, the power meters Ma to Md of the A to D homes, and the power meter Me of the common facility every unit time, for example. the power generation amount P of the battery panel 1 can be calculated or not used in a proportion of what extent A~D home, the amount used by the solar cell panel 1 of A~D home ma ', mb', mc ' , md' is obtained For example, it is possible to calculate the power utilization rate Na = ma ′ / (ma ′ + mb ′ + mc ′ + md ′) of the solar cell panel 1 in the A house .

The power generation amount P of the solar cell panel 1 will be equally returned to each of the houses A to D as the planned power sale price Q, and the electricity rate will be determined according to the usage rate N of each house with respect to the power generation amount P Then , for example, the electricity charge Za of the A house can be expressed by Expression (5).
Za = ma / (ma + mb + mc + md + me) · Z−Q / 4
+ (Na / 100) · Q (5)

Thereby, for example, when the utilization rate Na of power by the solar cell panel 1 is 25 (%), that is, when 1/4 of the power generation amount P is used, the electric charge Za is the same as that of the expression (3), and the utilization rate If Na becomes larger than 25 (%), it becomes a premium from the electricity rate Za of the formula (3). On the other hand, when there is a tendency to be absent in the daytime, the power utilization rate Na by the solar cell panel 1 is low, and it is discounted compared to the case of the electricity rate Za of the formula (3).

  In this way, in the case of a house that tends to be absent during the day and has a low utilization rate N, it is possible to receive a benefit of discounting the electricity rate according to Equation (5).

In Example 1, the electric power company 6 is contracted only apartment owners and electricity charge Z from the central processing unit 8 power company 6, the electricity charge in accordance with the power usage of each housing A~D house Calculated.

In this second embodiment, the central processing unit 21 instead of providing the facility of collective housing, is provided on site of power company 6 as shown in FIG. In this case, the power company 6 concludes a power usage contract with each of the houses A to D, and the power company 6 receives the power usage information of the power meters Ma to Md through the signal lines 22a to 22e or reads the meter. Thus, the central processing unit 21 can calculate and charge the electricity charges for each of the houses A to D where the amount of power sold to the power company 6 is discounted.

  In this case, even if the power generation amount of the solar panel 1 is distributed to the A to D homes and the common facility E, the distribution amount is calculated as a power purchase price, so the power purchase price is calculated by the power purchase meter M1. Calculate and use the power meters Ma to Me for the rate of calculation of the electricity bill for each house.

It should be noted that it is also possible to set a rate at which benefits can be received via the central processing unit 8 according to parameters such as rent, room area, number of rooms, number of residents, and the like. Alternatively, the electric power generated in the solar cell panel 1 can be used preferentially in the shared facility, and the surplus portion can be distributed to each house.

  Further, in the embodiment, how much of each of the houses A to D is used among the power generated by the solar cell panel 1 is determined based on the power usage information of the power meters Ma to Md. Although the electric power company 6 calculated by calculation, instead of the electric power meters Ma to Md, an electric power meter dedicated to the solar panel 1 and an electric power meter for measuring the electric power purchased from the electric power company 6 in each of the houses A to D They may be measured separately.

1 is a schematic diagram of a power distribution system. 1 is a schematic diagram of a power distribution system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Solar cell panel 2, 7 Cable 3 Electric power distribution means 4 Power purchase cable 5 Power sale cable 6 Electric power company 8, 21 Central processing unit 9a-9e 10, 11, 22a-22e Signal line 12 Input device 13 Monitor M1 Power purchase Meter M2 Electricity sales meter Ma ~ Me Electric power meter

Claims (2)

A solar panel disposed on the outer surface of the apartment house, and the power generated by the solar panel is preferentially distributed to each component house and / or common part of the apartment house, and only the power generation by the solar panel A power distribution system in a collective housing that distributes power purchased from an electric power company to each component house and / or common part when it is insufficient,
Power distribution means for distributing power to each constituent house and / or common part;
A power purchase measuring means that is arranged between the power distribution means and the power company and measures the amount of power that the entire apartment house has purchased from the power company;
Power selling power measuring means for measuring the amount of power sold to the power company out of the power generated by the solar panel disposed between the power distribution means and the power company;
A plurality of door-to-door power consumption measuring means for individually measuring the amount of power supplied to each constituent house and common part of the apartment house;
Calculate the amount of power generated by the solar cell panel by subtracting the amount of power purchased from the power company from the total power measured by the door-to-door power consumption measuring means and adding the amount of power sold to the power company. Power generation amount calculation means to
A plurality of door-to-door consumption solar power measuring means for individually measuring the amount of power generated by the solar battery panel and supplied to each constituent house of the apartment house,
It calculates the purchased electric power electricity purchase price from purchased electric power amount and the purchased electricity unit price measured by the measuring means to calculate the power sale price from the power sale power quantity, and power sale bid measured by the power sale power measuring means, An amount obtained by subtracting the electricity selling price from the electricity purchase price is calculated as an electricity bill to be paid to an electric power company, and each constituent house with respect to the total power consumption of all the constituent houses and the unit-by-door power consumption measuring means of the common part and amount obtained by multiplying the consumption rate of power consumption, the consumption rate of consumption power generation amount of all the structural housing power sale estimated price multiplied by the power sale bids and generated power amount obtained by the power generation amount calculating unit multiplying the the sum of the amount, and further comprising a calculating means for the amount obtained by subtracting the dividing the amount of the power selling plan price structure housing number is calculated as a house-to-house electricity charge to charge to the each configuration residential Electricity in the housing complex Distribution system.   The electric power in an apartment house according to claim 1, wherein the electric power measurement by the door-to-door power consumption measuring means and the door-to-door electric power consumption measuring means is obtained by the calculation means by each attached electric power meter. Distribution system.

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