JP5405223B2 - Self-generated power operation device for collective housing and self-generated power operation system for collective housing using the device - Google Patents

Description

  The present invention relates to a self-generated power operation apparatus for collective housing that can reduce the burden of a power usage fee in an apartment house by effectively using the self-generated power, and a self-generated power operation system for collective housing using the apparatus. It is about.

  In recent years, the use of solar power generation has been promoted in various fields for the purpose of reducing carbon dioxide emissions and the like, and its use is also being promoted in apartment houses that consume a lot of electric power. In the case of an apartment house, a system is known in which a solar panel is installed on the roof, etc., and the generated power of the solar panel is distributed to each room, and surplus generated power that is not used up is sold to an electric power company. (For example, refer to Patent Document 1).

  In such a system, in order to eliminate unfairness, it is common to distribute the generated power evenly and also distribute the reduction of the power charge by selling power equally. At that time, it was also possible to set the distribution ratio of generated power and the reduction rate of power charges according to parameters such as the area of the room.

  In the above case, there is no problem as long as the power of the apartment house can be covered with the power generated by the private power generation, but if the generated power is insufficient and the power is purchased from the power company, the power company has set a three-stage charge system. The following problems may occur.

For example, the setting of the power usage fee for purchasing power is
First stage fee: 17 yen / kWh for 120 kWh or less,
Second stage fee: More than 120 kWh to 300 kWh or less, 22 yen / kWh,
Stage 3 fee: ¥ 300 / kWh for over 300 kWh
In this case, the number of rooms is two, the power consumption of one room is 100 kWh / month (first stage charge), and the power consumption of the other room is 240 kWh / month (second stage charge). If the private power generation is 100 kWh / month, the power usage fee (excluding a fixed amount such as a basic charge) may change depending on the distribution of the private power generation.

  That is, if the privately generated power is evenly distributed to the two rooms at 50 kWh, one room (the first stage charge) will be 100 kWh-50 kWh = 50 kWh of purchased power, 50 kWh × 17 yen / kWh = 850 yen It becomes a charge. In the other room (second stage charge), the purchased electric power is 240 kWh-50 kWh = 190 kWh, and the electric power usage charge is 120 kWh × 17 yen / kWh + 70 kWh × 22 yen / kWh = 3,580 yen.

  On the other hand, if all privately generated power 100 kWh is supplied to the other room (second stage charge), one room (first stage charge) is 100 kWh × 17 yen / kWh = 1700 yen. Become. In the other room (second stage charge), the purchased electric power is 240 kWh-100 kWh = 140 kWh, and the electric power usage charge is 120 kWh × 17 yen / kWh + 20 kWh × 22 yen / kWh = 2,480 yen.

  In this way, in the distribution of privately generated power as described above, the total amount of power usage charges is 4,430 yen and 4,180 yen, resulting in a difference of 250 yen. For this reason, when considering the total amount of the power usage fee, there is a problem that simply distributing the privately generated power may not result in an optimal reduction of the power usage fee. Of course, it is also possible to reduce the power usage fee by finely varying the distribution of private power generation, but control and setting become extremely complicated, increasing the burden on the user such as data input, It was not preferable.

  Further, regarding the distribution of profits from reductions in electricity usage fees and profits from power sales, it is possible to distribute to each occupant or owner in consideration of the amount of electric power used, rent, etc. (for example, patent documents) 1 and 2). However, the calculation method becomes very complicated, and there is a problem that a question arises because it cannot be easily understood.

In addition, it is known that the power supplied from the photovoltaic power generation system is distributed and supplied to the manager's dwelling units or other dwelling units without being sold to an electric power company (for example, see Patent Document 3). . However, there is a problem that it takes time to distribute power to each dwelling unit, and the distribution method with fairness becomes complicated.

JP 2005-295670 A JP 2007-329999 A JP 2004-308278 A

  The problem to be solved by the present invention is to solve the above-mentioned problems of the prior art, minimize the total amount of power usage charges with simple settings, and make it easier and clearer to distribute profits such as power sales. An object of the present invention is to provide a self-generated power operation apparatus for an apartment house and a self-generated power operation system for an apartment house using the apparatus.

  The self-generated power operation device for collective housing of the present invention has a switchboard and a watt hour meter installed in each room, and each occupant is contracted with the power company to receive power supply to each room. In an apartment house equipped with a private power generator connected to the wiring network, the power input from the private power generator, the power output to the switchboard, and the power to read the watt hour value of the watt hour meter A meter value reading means, a power consumption calculating means for calculating a power consumption amount from the calculation date to the current day based on a power meter value read by the power meter value reading means, and the power consumption calculation means The power consumption maximum living room determination means for comparing the power consumption calculated by the above and determining the room with the maximum power consumption, and the generated power from the private power generator in the room determined by the power consumption maximum room determination means Power generation supply to supply It comprises selection means, and is intended for connecting the self-generating apparatus switchboard room selected on the generated power supply room selection means. The private power generation device in this private power generation operation device for collective housing is constituted by a solar power generation device or a wind power generation device.

  Moreover, the self-generated power operation system for collective housing of the present invention uses the above-described self-generated power operation device for collective housing, and generates electric power generated from the self-powered device in a room having the largest power consumption among a plurality of rooms. Everything is supplied. In addition, this collective housing private power generation operation system compares the amount of power used from an electric power company with the amount of power supplied from the private power generation device, and surplus power is generated in the generated power from the private power generation device. In addition, a power selling means for selling the surplus power to an electric power company is provided. Furthermore, the self-generated power operation system for collective housing has a reduced amount that reduces the power used by the power company by supplying all the generated power from the private power generator to the living room where the amount of power used is the maximum, and the surplus power. Dividend calculation that calculates the amount of electricity sold to be distributed to the purchasers of the securities according to the securities for which the face value and dividends are set based on the costs of purchasing, maintaining and operating the private power generator Equipment.

  In the self-generated power operation apparatus for collective housing of the present invention, the maximum power consumption determining unit determines the room with the maximum power consumption by comparing the power consumption of each room calculated by the power consumption calculation unit. . Then, the generated power supply room selection unit supplies the generated power from the private power generator to the room determined by the maximum power consumption determining unit. As a result, privately generated power is supplied to the room where the power consumption that is likely to become the second-stage charge or the third-stage charge with a high power usage charge is maximized, and the power consumption corresponding to the high power usage charge is reduced. It is possible to reduce power usage charges more. As a result, it is possible to minimize the total amount of electricity usage charges for the entire apartment house with simple settings.

  Moreover, since the solar power generation device or the wind power generation device is used as the private power generation device, it is possible to contribute to the reduction of carbon dioxide emissions.

  Further, in the self-generated power operation system for collective housing of the present invention, all of the generated power from the self-power-generation device is supplied to the living room with the maximum amount of power using the above-described self-generated power operation device for collective housing. ing. As a result, the maximum amount of power used can be reliably reduced, and further, since it is not necessary to distribute or limit the generated power to be supplied, it is possible to simplify the control of the system and improve the reliability.

  In addition, in this self-generated power operation system for collective housing, when surplus power is generated in the generated power by comparing the amount of power used by the power company and the amount of power supplied from the private power generator, the surplus power is generated. Power selling means for selling power to power companies. As a result, surplus power can be used effectively without being wasted. In particular, in this system, the total amount of power reduction from surplus power and the amount of surplus power sold is reduced by supplying all the generated power from the private power generator to the room where the maximum amount of power is used. The payout calculating device calculates the amount to be distributed to the purchaser of the securities in accordance with the securities for which the face value and the dividend are set based on the costs for purchasing, maintaining and operating the private power generation device. This makes it possible to distribute the reduction amount and the power sale amount with a very clear standard of dividends based on the purchase of securities, and to distribute it easily and clearly without any doubt.

It is a block diagram which shows the private power generation operation system for apartment houses which concerns on one Example of this invention. It is a block diagram which shows the private power generation operation apparatus for collective housing used for the system shown in FIG. It is function explanatory drawing of the private power generation operation system for apartment houses and the private power generation operation apparatus for apartment houses shown in FIG.1 and FIG.2. It is a flowchart which shows operation | movement of the private power generation operation system for apartment houses and the private power generation operation apparatus for apartment houses shown in FIG. It is explanatory drawing which shows the total amount of used electric energy when there is no private power generation device, and electric power usage fee. It is explanatory drawing which shows the total amount of the electric power consumption at the time of using the system shown in FIG. 1, and an electric power usage fee. It is explanatory drawing which shows the total amount of used electric energy and electric power usage fee at the time of distributing privately generated electric power equally. It is explanatory drawing which shows the total amount of used electric energy when the private power generation electric power is supplied only to the specific living room, and the electric power usage fee.

  The self-generated power operation device for collective housing of the present invention is an electric power reading the watt-hour meter value of the watt-hour meter of each room and the input end of the power from the private power generator, the output terminal of the power to the switchboard of each room Usage meter reading means, usage energy calculation means to calculate the usage energy based on the read electricity meter value, and comparison of the calculated usage energy to determine the room with the maximum usage energy A maximum power amount room determination unit; and a generated power supply room selection unit that supplies generated power to the determined room. The self-generated power operation system for collective housing using this self-generated power operation device for collective housing supplies all of the generated power from the self-powered generator to the living room with the largest amount of power used among the multiple rooms. The maximum amount of power used is reduced to reduce the power usage fee.

  In addition, this self-generated electricity operation system for collective housing compares the amount of power used by the power company with the amount of power supplied from the private power generator, and when surplus power is generated, the surplus power is There is a means to sell electricity to the company. Further, in the private power generation operation system for collective housing, the reduction amount used by the power company and the surplus are reduced by supplying all the generated power from the private power generation device to the living room where the maximum amount of power is used. Dividend calculation device that calculates the total amount of power sold according to the securities for which dividends are set based on the costs for purchasing, maintaining and operating the private power generator Is also provided. As a result, it becomes possible to distribute the reduced amount of electricity usage fees and the amount of power sold in the form of dividends based on the purchase of securities.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a self-generated power operation system for collective housing according to one embodiment of the present invention, and FIG. 2 is a block diagram showing a self-generated power operation device for collective housing used in the system shown in FIG. is there. Reference numeral 1 denotes an apartment house provided with a plurality of living rooms. In the apartment house 1 in this embodiment, four living rooms A to D are provided, and a distribution board 2 and a watt hour meter 3 are provided in each living room. 4 is an electric power company, and the power supply equipment is connected to the watt hour meter 3 in each room by electric wires. In addition, the switchboard 2 is connected to an electric power company 4 via a watt-hour meter 3.

  Reference numeral 5 denotes a private power generation device composed of a solar power generation device or a wind power generation device. In this embodiment, a solar cell panel, a backflow prevention circuit, and a conversion circuit that converts direct current into alternating current are installed on the rooftop of the apartment house 1. It consists of a solar power generation device consisting of etc.

  Reference numeral 6 denotes an in-house power generation operation device for collective housing. This collective housing private power generation operation device 6 includes a control circuit, a storage circuit, a changeover switch, and the like, and is configured by a portion having a function as shown in FIG. The input terminal 7 is for inputting AC privately generated power output from the private power generator 5. The watt-hour meter value reading unit 8 inputs and stores the watt-hour meter value of the watt-hour meter 3 installed in each room. The power consumption calculation unit 9 calculates and calculates the power consumption from the power meter value stored in the power meter value reading unit 8 to the current day. The maximum power consumption room determination unit 10 determines a room having the maximum power consumption by comparing the calculated power consumption of each room. The generated power supply room selection unit 11 switches the output destination so as to supply the self-generated power input from the input end to the room where the amount of power used is determined to be maximum. The output terminal 12 outputs AC generated power from the private power generator 5 to the switchboard 2 in the room switched by the generated power supply room selection unit 11.

  Reference numeral 13 denotes a power selling device including a control circuit, a changeover switch, and the like, which compares the amount of power used from the power company 4 based on the power meter value of the power meter 3 with the amount of power supplied from the private power generator 5 When surplus power is generated in the generated power, the surplus power is sold to the power company 4.

  14 is a dividend calculation device composed of a personal computer or the like, and purchase of the private power generation device 5 is calculated by reducing the amount of power used as data from the housing complex private power generation operation device 6 and the total amount of surplus power sold. The amount to be distributed to the purchaser of the security is calculated according to the security for which the face value and the dividend are set based on the cost and maintenance cost data.

  Next, the configuration of the apartment house private power generation operation device 6, the power selling means 13, and the dividend calculation device 14 will be further described systematically with reference to the function explanatory diagram shown in FIG. The apartment house private power generation power operation device 6 has a functional configuration substantially as described above, and includes a watt-hour meter value reading means 15 for reading a watt-hour meter value from the watt-hour meter 3 and a watt-hour meter value reading means. Based on the watt-hour meter value read by 15, the power consumption calculation means 16 for calculating the power consumption from the date of calculation to the current day for each room, and the power consumption of each room calculated by the power consumption calculation means 16 Electric power generation from the private power generation apparatus 5 by selecting the room for determining the maximum amount of used electric energy 17 for comparing the amount and determining the room where the amount of electric power used is the maximum, and the room for determining the maximum amount of electric power used 17 And a generated power supply room selection means 18 for supplying basically all electric power.

  In addition, the power selling device 13 compares the amount of power used in the living room where the amount of power used in the apartment house private power generation operation device 6 is determined to be maximum with the amount of power generated by the private power generation device 5. When the power is larger, surplus power calculation means 19 that calculates the difference (surplus power), and the generated power generated by the private power generator 5 based on the surplus power calculated by the surplus power calculation means 19 And surplus power selling means 20 for supplying power to the company 4 and selling it.

  The dividend calculation device 14 calculates the reduction amount of the power usage fee that is reduced by supplying all the generated power of the private power generation device 5 to the living room where the amount of power used is determined to be maximum in the collective housing private power generation operation device 6. Used power reduction amount calculating means 21, surplus power sold amount calculating means 22 for calculating the amount of sold power obtained by selling surplus power by the power selling means 13, calculated reduction amount and sold power amount Distribution amount calculation means 23 for calculating the amount to be distributed to the securities buyer at a predetermined dividend rate, and output by displaying or printing the calculated distribution amount as a dividend corresponding to each purchaser of the security Means 24.

  Here, the reduction of the power usage fee by the collective housing self-generated power operation system configured as described above will be described based on the examples shown in FIGS. 5 to 8, and then the multi-family residential power generation power operation device 6 configured as described above, etc. The operation of the collective housing private power generation operation system will be described based on the flowchart shown in FIG.

First, when there are four rooms A to D and the private power generator 5 is not used or not used, the power consumption of each room A to D is 100 kWh, 100 kWh, 240 kWh, and 100 kWh as shown in FIG. And the electric power usage charges of each of the living rooms A to D are calculated as follows based on the three-stage charge system.
Room A, 100 kWh × 17 yen / kWh = 1,700 yen Room B, 100 kWh × 17 yen / kWh = 1,700 yen Room C, 120 kWh × 17 yen / kWh + 120 kWh × 22 yen / kWh = 4,680 yen Room D, 100 kWh × 17 yen / kWh = 1,700 yen As a result, the total amount becomes 9,780 yen.

Here, as shown in FIG. 6, 100 kWh of generated power is obtained using the private power generation device 5, and all the generated power is supplied to the living room C which is the maximum power consumption by the collective housing private power generation operation system. Then, the power usage fee for each of the living rooms A to D is calculated as follows.
Room A, 100 kWh × 17 yen / kWh = 1,700 yen Room B, 100 kWh × 17 yen / kWh = 1,700 yen Room C, 240 kWh-100 kWh = 140 kWh
120 kWh × 17 yen / kWh + 20 kWh × 22 yen / kWh = 2,480 yen Living room D, 100 kWh × 17 yen / kWh = 1,700 yen As a result, the total amount becomes 7,580 yen.

Moreover, as shown in FIG. 7, when the generated power 100 kWh of the private power generator 5 is evenly distributed to each of the rooms A to D by 25 kWh, the power usage fee of each of the rooms A to D is calculated as follows.
Room A, 100kWh-25kWh = 75kWh
75 kWh x 17 yen / kWh = 1,275 yen Room B, 100 kWh-25 kWh = 75 kWh
75kWh × 17yen / kWh = 1,275yen Room C, 240kWh-25kWh = 215kWh
120 kWh × 17 yen / kWh + 95 kWh × 22 yen / kWh = 4,130 yen Room D, 100 kWh-25 kWh = 75 kWh
75 kWh × 17 yen / kWh = 1,275 yen As a result, the total amount is 7,955 yen.

Further, as shown in FIG. 8, if the generated power 100 kWh of the private power generation device 5 is supplied only to the room D, which is the owner's room, for example, regardless of the amount of power used in each room, the power usage fee for each room A to D Is calculated as follows.
Room A, 100 kWh × 17 yen / kWh = 1,700 yen Room B, 100 kWh × 17 yen / kWh = 1,700 yen Room C, 120 kWh × 17 yen / kWh + 120 kWh × 22 yen / kWh = 4,680 yen Room D, 100kWh-100kWh = 0kWh
0 kWh × 17 yen / kWh = 0 yen. As a result, the total amount is 8,080 yen.

  From the above, as shown in FIG. 6, the total amount of the power usage fee can be suppressed to the lowest when all the generated power is supplied to the living room C that is the maximum power consumption amount by the apartment house private power generation power management system. This is because the generated power is supplied to the room that has the maximum power consumption, thereby reducing the power consumption of the room that is likely to enter the fee stage where the power consumption is high. This is because. In addition, when the amount of power used in each room is distributed between the first-stage charge and the third-stage charge, the difference in the amount of power used is as if the amount of power used in each room is in the same stage charge. It is preferable to eliminate this, and it is effective to reduce the maximum power consumption as described above in order to easily do this.

  Next, the operation of the apartment house private power generation operation system will be described with reference to FIG. FIG. 4 is an operation system in an apartment house composed of a plurality of living rooms, and is an operation performed once a day. When the power source or start switch of the apartment house private power generation operation device 4 is turned on to start the operation (step ST1), the watt-hour meter reading means 15 reads the watt-hour meter values of the rooms A to D (step ST1). ST2), the power consumption calculation means 16 calculates the power consumption of each room from the date of calculation of each room to the current day (step ST3). Thereafter, the maximum power consumption determining unit 17 determines and selects the room where the maximum power consumption is obtained (step ST4), and the generated power supply room selecting unit 18 supplies the generated power from the private power generator 5 to the room ( Step ST5). At this time, surplus power calculation means 19 reads the maximum amount of power used and the amount of generated power, determines whether the amount of generated power is greater than the maximum amount of power used (step ST6), and surplus when the amount of generated power is large It is determined that power has been generated, and the amount of surplus power is calculated. Thereafter, the surplus power selling means 20 sells surplus power to the power company 4 (step ST7). On the other hand, if the amount of generated power is smaller than the maximum amount of power used, it is determined that the amount of generated power alone is not sufficient, and power is purchased from the power company 4 (step ST8). After that, the power consumption reduction amount calculation means 21 and the surplus power sale amount calculation means 22 calculate the reduction amount and the power sale amount from the amount of power used and the amount of power sold in each room (step ST9). The distribution amount calculation means 23 calculates and distributes a dividend to the securities owner based on the reduced amount and the power sale amount, a preset dividend rate, the number of securities, and the like (step ST10).

  In this way, in the apartment house private power generation power operation system using the apartment house private power generation power operation device 6, it is relatively easy to calculate the total amount of power usage charges simply by reading the amount of power used and the amount of power generation in each room. Can be reduced.

In addition to reducing the electricity usage fee, the profits from the sale of power when surplus electricity is generated are included and distributed to reduce the electricity usage fee and recover equipment costs. Can be performed efficiently. In particular, it is possible to issue securities with a face value and dividend set in consideration of the cost of purchasing, maintaining, and inspecting equipment, and to easily and clearly distribute the reduced amount or the amount of power sold according to the number of units purchased. it can. Regarding the purchase of securities, it is possible to increase the number of issues by including management companies or third parties for the purpose of breeding in addition to residents and owners.

For example, in a rental apartment building, if the lessee becomes a securities purchaser, the electricity usage fee will be reduced, so it becomes easier to recruit lessees.

  In addition, in the case of a large apartment house with a very large number of rooms such as high-rise housing, etc., if it is set so that all generated power is supplied to the floor of the maximum power consumption, it is grouped for each floor, Control of the system can be simplified even if the number of rooms is large.

DESCRIPTION OF SYMBOLS 1 Apartment house 2 Power distribution board 3 Electricity meter 4 Electric power company 5 Private power generation device 6 Apartment house private power generation electric power operation apparatus 7 Input terminal 8 Electricity meter value reading part 9 Electric power consumption calculation part 10 Electric power consumption largest room determination part 11 Electric power generation Power supply room selection unit 12 Output terminal 13 Power selling means 14 Dividend calculation device 15 Electricity meter value reading means 16 Power consumption calculation means 17 Power consumption maximum room determination means 18 Power generation supply room selection means 19 Surplus power calculation means 20 Surplus power sale means 21 Used power reduction amount calculation means 22 Surplus power sale amount calculation means 23 Distribution amount calculation means 24 Output means A to D Living room

Claims (5)

A set of switchboards and watt-hour meters in each room, and each person in the room has a use contract with the power company and receives power supply to each room, and is equipped with a private power generation system connected to the power company's wiring network In a house
An input end of power from the private power generation device;
An output end of power to the switchboard;
Watt-hour meter reading means for reading the watt-hour meter value of the watt-hour meter;
Power consumption calculation means for calculating the power consumption from the date of calculation to the current day based on the power meter value read by the power meter value reading means;
A power consumption maximum occupancy determination means for comparing the power consumption calculated by the power consumption calculation means to determine a room with the maximum power consumption;
A generated power supply room selection means for supplying the generated power from the private power generator to the room determined by the maximum power consumption room determination means,
A self-generated power operation apparatus for collective housing, wherein the private power generation apparatus is connected to a switchboard of a room selected by the generated power supply room selection means. The private power generation operation apparatus for an apartment house according to claim 1, wherein the private power generation apparatus is a solar power generation apparatus or a wind power generation apparatus. The self-generated power operation device for collective housing according to claim 1 or 2 is used, and all of the generated power from the private power generator is supplied to a room having the maximum amount of power used among a plurality of rooms. Self-generated power operation system for apartment houses. Compare the amount of power used by the power company with the amount of power supplied from the private power generator, and if surplus power is generated in the power generated from the private power generator, sell the surplus power to the power company. The self-generated power operation system for collective housing according to claim 3, further comprising an electric means. Reduce the amount of power used from the power company by supplying all the generated power from the private power generator to the living room with the largest amount of power used, and the total amount of power sold from the surplus power. 5. The payout calculating device according to claim 4, further comprising: a payout calculating device for calculating an amount to be distributed to a purchaser of the security in accordance with a security for which a face value and a payout are set based on purchase, maintenance, and operation costs. Self-generated power operation system for apartment houses.

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