JP2003319560A - Distributed power supply equipment and control method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide distributed power supply equipment which meets consumers' needs, automatically selects a load balanced with distributed power supply for protection of the selected load in case that an accident occurs in an external system, and which is linked to the external system, and a control method for the distributed power supply equipment linked to the external system suited for an economical operation. <P>SOLUTION: In this distributed power supply equipment linked to the external system, a controller which makes interactive communications with the information of the external system and the information of consumers as users of the distributed power supply equipment controls all breakers, all electric-variable measuring means, all switches, and distributed power supply through the interactive communications. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed power supply facility connected to an external system such as a commercial system and a control method for the distributed power supply facility.

[0002]

2. Description of the Related Art Introduction of distributed power sources has been promoted by deregulation such as electric power liberalization. However, since distributed power sources generally have a much smaller capacity than commercial power systems, when they are operated in a system that is not connected to the grid, the stability of operation against load fluctuations is low, there is a high risk that the distributed power sources will stop operating, and economic efficiency is high. From the point of view of the above, changing the output following the load change causes energy loss.

Therefore, in general, the distributed power source is often operated by being connected to a commercial system. FIG. 5 is a configuration diagram of a distributed power supply facility connected to a conventional commercial system disclosed in, for example, Japanese Patent Laid-Open No. 11-055858. In FIG. 5, 1 is a circuit breaker between the commercial system and the customer system, 2 is a distributed power source of the customer, 3 is a circuit breaker between the distributed power source of the customer and the customer system, and 4 is a first of the customer system. Is a second bus bar of the customer system, 6 is a breaker between the first bus bar 4 and the second bus bar 5, 7 is a storage battery, and 8 is an AC / DC converter.

Next, a normal operation will be described. All of the circuit breaker 1, the circuit breaker 3, and the circuit breaker 6 are operated in a closed state. At this time, when the load amount in the customer system is larger than the output of the distributed power source 2, the shortage is accommodated from the commercial system,
When the load amount in the customer system is smaller than the output of the distributed power source 2, the surplus is sent to the commercial system as a reverse flow. Further, the storage battery 7 is appropriately charged from the second bus bar 5 through the AC / DC converter 8.

Next, the operation at the time of a system fault will be described. The circuit breaker 1 and the circuit breaker 6 are opened, and the circuit breaker 3 is continuously closed. At this time, the power supply to the load connected to the first bus bar 4 in the customer system is stopped. On the other hand, the load connected to the second bus bar 5 is continuously supplied with the electric power generated by the distributed power source 2. If the amount of power generated by the distributed power source 2 is insufficient, power is supplied from the storage battery 7 to the second bus bar 5 through the AC / DC converter 8. That is, the load connected to the second bus bar 5 is protected and the load connected to the first bus bar 4 is not protected at the time of a system fault.

[0006]

However, FIG. 5 has the following problems. First, since the protected load and the unprotected load are fixed at the time of system design, it is necessary to reconnect to the second bus bar 5 in order to protect the load connected to the first bus bar 4, On the contrary, in order to remove the protection from the load connected to the second bus bar 5, it is necessary to switch the connection to the first bus bar 4. Therefore, for loads that require protection during the day but not at night, the first and second busbars must be reconnected every day in order to provide the desired protection. It is complicated. Further, even if the load connected to the second busbar 5 is small and the distributed power source 2 has a margin, the load connected to the first busbar 4 is not saved in the event of an accident.

Secondly, as described above, when the amount of power generation of the distributed power source 2 is insufficient at the time of a system failure, power is supplied from the storage battery 7 to the second bus bar 5 through the AC / DC converter 8, but the storage battery 7 is Since the capacity is finite, it is effective when supplying power for an extremely short time, such as an uninterruptible power supply, but when the system fault does not recover immediately, the load connected to the second bus bar 5 is eventually eliminated. There is a high risk of not being saved.

Thirdly, the tariff system of electric power companies is diversifying with the liberalization of electric power, but the economic effect is not taken into consideration in FIG.

In the conventional grid-connected distributed power supply facility, it is complicated to change from a protected load to an unprotected load and vice versa as pointed out in FIG. 5, and the capacity of the distributed power supply is not always required. All could not be utilized to protect the load. In addition, there is a problem that the capacity of the dispersed power source and the capacity of the load to be protected can be maintained only for a short period of time, and the economical operation is not performed.

The present invention has been made to solve the above problems, and at the same time as meeting the demands of customers, it automatically selects a load balanced with a distributed power source and selects it in the event of a system fault. It is an object of the present invention to obtain a grid-connected distributed power supply facility in which the above-mentioned load is protected, and further to provide a method of controlling the grid-connected distributed power supply facility suitable for economic operation.

[0011]

According to a first aspect of the present invention, there is provided a distributed power supply facility according to claim 1, which is a distributed power supply facility interconnected with an external system, wherein the external system is an interconnection point, a first circuit breaker and a first circuit breaker. Connected to the first premises bus via the electric quantity measuring means, and the distributed power source is connected to the second premises bus via the second circuit breaker and the second electric quantity measuring means. The first premises busbar and the second premises busbar are connected by a third circuit breaker, the first premises busbar is connected to the first switching terminal of each of the plurality of switching devices, and the second premises busbar is Whether each switching terminal of the plurality of switching devices is connected to the first switching terminal or the second switching terminal of the plurality of switching devices,
It is possible to select any one of the three which is not connected to either switching terminal, is connected to each load via each electric quantity measuring means, and is connected to the information of the external system and the consumer who is the user of the distributed power equipment. A controller, which is in bidirectional communication with information, bidirectionally communicates with and controls all the circuit breakers, all the electric quantity measuring means, all the switches, and the distributed power source.

According to a second aspect of the present invention, there is provided a method for controlling distributed power equipment, wherein in the distributed power equipment according to the first aspect, the controller uses the degree of importance of the load from the customer to switch the switch. Is to control.

The control method for distributed power equipment according to claim 3 of the present invention is the method for controlling distributed power equipment according to claim 2, wherein the controller requests the amount of power interchange from an external system. Is used to control the switching device.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. FIG. 1 is a configuration diagram of a distributed power facility connected to an external system according to Embodiment 1 of the present invention, and more specifically, a configuration diagram of a portion in which a load is driven by both the external system and the distributed power source. Is.

In FIG. 1, an external system (for example, a commercial system) 100 includes an interconnection point 103, a first circuit breaker 111, and a first circuit breaker 111.
Connected to the first local bus 105 through the electric quantity measuring means 114 in order, and the distributed power source 101 is connected to the second circuit breaker 11
2 and the second electric quantity measuring means 115, and is connected to the second campus bus 106, and the first campus bus 105 and the second campus bus 106 are connected.
A third circuit breaker 113 is connected to the local bus 106 of the above.

The first campus bus 105 is composed of N switching devices 1
, 12N0 are connected to the first switching terminals 1211, 1221, ..., 12N1, respectively, and the second premises bus 106 has N switching devices 1210, 1220,
..., 2N switching terminals 1212 and 122 of 12N0
2, ..., 12N2 are connected. N switching devices 121
0, 1220, ..., 12N0 select terminals 121
, 1223, ..., 12N3 are the first switching terminals 121
, 12N1 or the second switching terminals 1212, 1222, ..., 12N2,
It is possible to select any one of three switching terminals which are not connected to either of the switching terminals, and the respective electric quantity measuring means 131, 132, ..., 1
1 via N loads 141, 142, ...
It is connected to 4N.

External system information 104 and distributed power supply equipment 10
The controller 150, which performs two-way communication with the information 160 of the customer who is the second user, uses the circuit breakers 111, 112, 113.
And electric quantity measuring means 114, 115, 131, 132,
, 13N and switching devices 1210, 1220, ..., 12N0 and the distributed power source 101 are bidirectionally communicated and controlled.

Therefore, it is possible to automatically switch between the protected load and the unprotected load in the event of an accident, based on the information from the customer.

FIG. 2 is a diagram showing a method of automatically performing load distribution to both the external system and the distributed power source in the grid-connected distributed power source facility according to the first embodiment of the present invention.
1 shows an example of the internal configuration of 0. In FIG.
Those given the same reference numerals as in FIG. 1 are the same or equivalent.

In FIG. 2, electric quantity measuring means 131, 1
The observed values of 32, ..., 13N are input to the measured amount analysis / storage unit 202 via the I / O 201, and the loads 141, 1
The current power consumption of 42, ..., 14N is required. For example, when the selection terminal 1213 of the switch 1210 is not connected to the first switching terminal 1211 or the second switching terminal 1212, the power consumption of the load 141 is 0 watts in the measurement amount analysis / storage unit 202. . On the other hand, the measured amount analysis / storage unit 202 stores the latest measured value for each load including the present time at which the power consumption was not 0 watts, the actual power consumption w ₁ ,
Although stored as w ₂ , ..., W _N , the actual power consumption always takes a positive value because the initial value is a default load value having a positive value. The actual power consumption _{w 1, w 2, ...,} w N • The measured quantity analysis
It is output from the storage unit 202 to the optimum solution solving unit 203. For example, the actual power consumption w ₁ of the load 141 is 8 watts, the load 1
The actual power consumption w ₂ of 42 is 12 watts, ..., The actual power consumption w _N of the load 14N is 6 watts.

The customer information 160 includes the loads 141, 14
, ..., 14N importance a ₁ (t), a ₂ (t), ...
The value of a _N (t) is 0 or more, and is input to the optimal solution solving unit 203 via the I / O 201. Load importance a
₁ (t), a ₂ (t), ..., A _N (t) are set to have an important value, and unnecessary values are set to 0. For example, a
₁ (t) = 100, a ₂ (t) = 0, ..., a _N (t) =
If it is 10, "importance of load 141">"load14N"
Each load is important in the order of “importance level of load”> “importance level of load 142” = 0, and in particular, the load 142 is regarded as unnecessary. Further, the output power value W (t) of the distributed power source 101 is input to the optimum solution solving unit 203 via the I / O 201.

In the optimum solution solver 203, loads 141, 1
42, ..., 14N, the load having the highest importance is given priority, and the total load capacity is the output power value W of the distributed power source 101.
The load is selected so as not to exceed (t). Specifically, the above condition is 1 when the load is selected, and 0 when the load is not selected.
Load selection variable δ whose element is δ (t) having the value of
_{Using 1} (t), δ ₂ (t), ..., δ _N (t), the following conditional expression is used.

[0023]

[Equation 1]

The second equation from the top is for the selected load capacity.
The total does not exceed the output power value W (t) of the distributed power source 101.
It is a constraint condition. The third and lower expressions are the load selection variables
δ₁(T), δ_Two(T), ..., δ_NWith the constraint of (t)
is there. The first formula from the top is the importance of load a₁(T), a
_Two(T), ..., a_NExpression to evaluate load selection by (t)
So, the right side A (t) is so large that the load with high importance is selected.
Since it becomes larger, A (t) is
Load selection variable δ to maximize₁(T), δ
_Two(T), ..., δ_NOnce (t) is determined, the desired load selection
The selection has been made.

This conditional expression can be regarded as a linear programming problem in which the first expression from the top is an objective function, and the expressions below the second from the top are constraints. Solving methods such as the simplex method are widely known for linear programming problems, and there are also programs (for example, “OR simulation from basics” by Yukiteru Matsumura, Ohm Publishing: ISBN4-274-13024-X, pages 49-51.
Page), and can be easily mounted in the optimum solution unit 203.

The load selection variables δ ₁ (t), δ ₂ (t), ..., δ _N (t) obtained by the optimum solution obtaining unit 203 are I / O 2
12 via the switch 1210, 1220, ..., 12
Each is output to N0, and when δ (t) = 1, the selection terminal is connected to the second switching terminal, and when δ (t) = 0, the selection terminal is connected to the first switching terminal.

During normal operation, the system interconnection distributed power supply facility of this embodiment is operated with the third circuit breaker 113 of FIG. 1 closed. In other words, topologically, the bus of the external system and the bus of the distributed power supply are interconnected just as in FIG. Since the external system 100 is considered to be very robust, the loads 141 and 142 in the distributed power facility 102,
..., the operating condition of 14N changes, and power of stable quality can be supplied even if there is a load change.

When a fault occurs in the external system 100, for example, when a short circuit fault is detected by the controller 150 due to a decrease in the measurement voltage of the first electricity quantity measuring means 114, the controller 150 immediately switches to the first circuit breaker 111. An open signal is sent to the third circuit breaker 113, power supply from the external system 100 is stopped, and the first premises bus 105 and the second premises bus 106 are disconnected. At this time the controller 1
Only the loads of high importance preselected at 50 are connected to the second in-house bus 106, and the load selection variables δ ₁ (t), δ ₂ (t), ..., δ _N (t) above. From the selection method, the total of the capacities of the selected loads is very close to the output power value W (t) of the distributed power source 101, so the second local bus 1
06 can supply stable power. Also, the information on the accident is communicated to the external system information 104.

When a feeder accident occurs in the load,
For example, when the controller 150 detects a ground fault due to an increase in the measured current value of the electricity quantity measuring means 131, a signal is immediately sent from the controller 150 to the switching device 1210, and the selection terminal 1213 is also connected to the first switching terminal 1211. Two
However, since the capacity of the external system 100 is large like the load fluctuation during normal operation described above, power is stably sent to other loads. to continue.

Therefore, stable power can be supplied to a load of high importance. Further, stable power can be supplied to a load of high importance even in the event of an external system accident, and the influence on the load of high importance can be minimized even in the event of a feeder accident.

In general, there are various types of distributed power sources 101, and in the case of system interconnection, "Power system interconnection technology requirements guideline '98 edited by Agency for Natural Resources and Energy" (Electric Power Shinposha:
ISBN4-88555-237-0). When connecting a rotating machine type generator, it is prohibited to directly connect the generator output. The case of a rotary machine generator that uses fossil resources as fuel will be described below with reference to the drawings.

FIG. 3 is a diagram showing an example of the internal configuration of the distributed power source 101. The AC output of the rotary machine type generator 301 is passed through an electric quantity measuring means 302 to an AC / DC converter 303.
The DC output of the AC / DC converter 303 is input to the DC / AC converter 305 via the electric quantity measuring means 304, and the AC output of the DC / AC converter 305 is input to the electric quantity measuring means 306. Then, the second breaker 112 is connected. The distributed power supply controller 307 is the rotating machine generator 30.
1 and the signals of the electric quantity measuring means 302, 304, 306 are input, and the rotary machine generator 301 and the AC / DC converter 303 are input.
And a control signal to the DC / AC converter 305. In addition, the distributed power controller 307 is the controller 150.
And exchange signals. In FIG. 3, the same reference numerals as those in FIGS. 1 and 2 are the same or equivalent.

Even when the same circuit is used, the DC / AC converter 305 may operate as a current type inverter or a voltage type inverter depending on the control method, but in the case of system interconnection in the present embodiment, Operates as a current type inverter, or as a voltage type inverter if not connected.

The system interconnection distributed power supply facility of the present embodiment is
When the system is interconnected for normal operation, the DC / AC converter 30
5 is controlled by the distributed power supply controller 307 to operate as a current type inverter. Further, when an accident occurs in the external system, the DC / AC converter 305 can instantaneously switch control by a signal from the controller 150 so that the distributed power controller 307 operates as a voltage type inverter. At this time, the second campus bus 106
Since the total capacity of the loads connected to is very close to the output power value up to immediately before the rotary machine generator 301, the rotary machine generator 301 can continue operation without accelerating or decelerating the rotation speed.

Further, in the present embodiment, the rotating machine type generator has been described, but the power source may be solar power generation, and the same effect can be obtained.

Embodiment 2. FIG. 4 is an explanatory diagram of a method for controlling load selection according to the second embodiment of the present invention. In FIG. 4, the same reference numerals as those in FIGS. 1, 2 and 3 are the same or equivalent. In the present embodiment, differences from FIG. 2 will be described. The parts of which description is omitted are the same as those in the first embodiment.

A method for accommodating the external system 100 with the request amount R (t) for accommodating power to the distributed power facility 102 from the administrator of the external system such as an electric power company will be described below with reference to FIG. The external system information 104 outputs the requested amount R (t) of power accommodation to the controller 150, and the requested amount R of power accommodation R
(T) is input to the optimum solution solving unit 203 via the I / O 201.

In the optimum solution solver 203, the loads 141, 1
42, ..., 14N, the load having the highest importance is given priority, and the total capacity of the loads to be selected and the demand amount R for power interchange are selected.
The load is selected so that the sum of (t) does not exceed the output power value W (t) of the distributed power supply 101. Specifically, the above condition is a load selection variable δ ′ ₁ (t) whose elements are δ ′ (t) having a value of 1 when selecting a load and 0 when not selecting,
It is expressed by the following conditional expression using δ ′ ₂ (t), ..., δ ′ _N (t).

[0039]

[Equation 2]

In the second equation from the top, the total of the capacities of the selected loads and the sum of the required amount R (t) of power interchange is the distributed power source 101.
Is a constraint that does not exceed the output power value W (t). The third and lower expressions from the top are load selection variables δ ′ ₁ (t), δ ′ ₂
(T), ..., δ ′ _N (t). 1 from the top
The second expression is the importance of load a ₁ (t), a ₂ (t), ...,
This is an expression for evaluating load selection by a _N (t), where a _b on the left side is a reward for power interchange, and A '(t) on the right side becomes larger as a load with a higher importance is selected. , Load selection variables δ ′ ₁ (t), δ ′ so as to maximize A ′ (t) while satisfying the above-mentioned constraint conditions.
_{By determining 2} (t), ..., δ ′ _N (t), it means that the desired load selection is performed. Since this conditional expression can be regarded as a linear programming problem in which the first expression from the top is the objective function and the expressions from the top to the second are constraints, it can be solved in the same manner as in the first embodiment.

Load selection variables δ ′ ₁ (t), δ ′
₂ (t), ..., δ ′ _N (t) are output to the switches 1210, 1220, ..., 12N0 via the I / O 201, respectively, and when δ ′ (t) = 1, the selection terminals are Connected to the second switching terminal, and when δ '(t) = 0, the selection terminal is 1
Neither the number 2 switching terminal nor the number 2 switching terminal is connected.

On the other hand, the load selection variables δ ₁ (t), δ ₂ (t), ..., δ when there is no demand for power interchange as described in FIG.
_The optimum solution solving unit 203 also finds _N (t).

The two sets of load selection variables δ ₁ (t), δ ₂ (t), ..., δ _N (t) and δ ′ obtained by the optimum solution finding unit 203
_{Using 1} (t), δ ′ ₂ (t), ..., δ ′ _N (t),
A method of controlling the distributed power facility 102 when there is a request for power interchange will be described below.

During normal operation, the system interconnection dispersion of the present embodiment
The power supply facility is operated by closing the third circuit breaker 113 in FIG.
Be done. Load selection variable δ '₁(T), δ '_Two(T), ...
δ ’ _NFrom the method of determining (t), connect to the second campus bus 106.
The total capacity of the loads being connected is the output of the distributed power supply 101.
It is smaller than the power value W (t), and the difference is the demand for power interchange.
The value is equal to or greater than the amount R (t). Therefore, distributed power
External system 100 from facility 102 via interconnection point 103
In addition, if the required amount of power interchange R (t) or more is close to the required amount,
Power will be supplied.

When a fault occurs in the external system 100, for example, when a short circuit fault is detected by the controller 150 due to a decrease in the measurement voltage of the first electricity quantity measuring means 114, the controller 150 immediately switches to the first circuit breaker 111. An open signal is sent to the third circuit breaker 113, and the load selection variable δ ₁
(T), δ ₂ (t), ..., δ _N (t) are the switching devices 121.
0, 1220, ..., 12N0. δ
When (t) = 1, the selection terminal is connected to the second switching terminal, and when δ (t) = 0, the selection terminal is not connected to the first switching terminal or the second switching terminal. Load selection variable δ ₁
From the method of selecting (t), δ ₂ (t), ..., δ _N (t), the total of the capacities of the selected loads is very close to the output power value W (t) of the distributed power supply 101. The premises bus 106 can supply stable power to highly important loads.

When a load causes a feeder accident,
For example, when the controller 150 detects a ground fault due to an increase in the measured current value of the electricity quantity measuring means 131, a signal is immediately sent from the controller 150 to the switching device 1210, and the selection terminal 1213 is also connected to the first switching terminal 1211. Two
No. switching terminal 1212 is not connected.
Further, the power supply to the external system 100 is also temporarily stopped. In this state, the power is continuously sent to the selected loads other than the load 141 in a stable manner, and the amount of power supplied to the external system 100 until immediately before and the actual power consumption w _{1 of the} load 141.
Will be added and added.

After that, the load selection variable δ '₁(T), δ '
_Two(T), ..., δ '_NThe first element δ ′ from (t)
₁Δ'excluding (t)_Two(T), ..., δ '_N(T) is
Load importance a₁(T), a_Two(T), ..., a
_N(T), actual power consumption w₁, W_Two, ... w _NFrom now on
The first element a₁(T), w₁Use the one without
Then, the optimum solution is recalculated by the optimum solution solver 203 and newly obtained.
Load selection variable δ '_Two(T), ..., δ '_NBy (t)
, 12N0, δ ′ (t) = 1
, The selection terminal is connected to the second switching terminal, and δ ′
When (t) = 0, the selection terminal is also the switching terminal of No. 1 and No. 2
By controlling so that it is not connected to the switching terminal of
From the distributed power facility 102 via the interconnection point 103
Requested amount of power interchange to the sub system 100 is R (t) or more
The power returns to a value close to.

Therefore, according to the present embodiment, stable power can be supplied to a load of high importance even when power is sold according to a contract with a power company, and economical operation can be performed. Further, even in the event of an accident, it is possible to minimize the effect on the highly important load.

In FIG. 4, when a manager of an external system such as an electric power company requests a distributed power facility for power interchange,
We have shown the control method on the assumption that a power saving contract has been concluded between the electric power company and the customer, but when the contract becomes more complicated, for example, a request for power interchange. On the other hand, even when there is a penalty regulation when the consumer rejects, the optimum load selection can be obtained by incorporating the term into the left side of the first expression from the top of the conditional expression.

In this embodiment, the control method at the time of selling power has been described. However, by changing the control method of the switching device to the method of the first embodiment, the control method at the time of selling power can be stably changed from the control method at the time of selling power. The control method can be changed. On the contrary, it is possible to stably shift from the control method at the time of power purchase to the control method at the time of power sale.

[0051]

According to the distributed power facility according to claim 1 of the present invention, in the distributed power facility interconnected with the external system, the external system is the interconnection point, the first circuit breaker, and the first electricity quantity. Connected to the first campus bus via the measuring means, the distributed power source is connected to the second campus bus via the second circuit breaker and the second electric quantity measuring means, and the first campus The bus bar and the second premises bus are connected by a third circuit breaker, the first premises bus is connected to the first switching terminal of each of the plurality of switching devices, and the second premises bus of the plurality of switching devices is connected. Whether each select terminal of the plurality of switching devices is connected to the switching terminal of No. 2, is connected to the switching terminal of No. 1, is connected to the switching terminal of No. 2, or is not connected to either switching terminal. You can choose one of the three
Each is connected to a load via each electric quantity measuring means,
A controller that bidirectionally communicates with the information of the external system and the information of the customer who is the user of the distributed power supply facility, and bidirectionally communicates with and controls all the circuit breakers, all the electric quantity measuring means, all the switches, and the distributed power supply. Therefore, it is possible to automatically switch between the protected load and the unprotected load in the event of an accident.

According to the method for controlling distributed power equipment according to claim 2 of the present invention, in the distributed power equipment according to claim 1, the controller switches using the importance of the load from the customer. Since it controls the device, it can supply stable power to highly important loads.

According to the method for controlling distributed power equipment according to claim 3 of the present invention, in the method for controlling distributed power equipment according to claim 2, the controller determines the requested amount of power interchange from the external system. Use it to control the switch,
Even when selling power, stable power can be supplied to highly important loads, and economical operation can be implemented.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a distributed power facility connected to an external system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a method for automatically performing load distribution to both an external system and a distributed power source.

FIG. 3 is a diagram showing an example of an internal configuration of a distributed power supply.

FIG. 4 is an explanatory diagram of a method for controlling load selection according to the second embodiment of the present invention.

FIG. 5 is a configuration diagram of a distributed power supply facility connected to a conventional commercial system.

[Explanation of symbols]

100 external system, 101 distributed power supply, 102 distributed power supply facility, 103 interconnection point, 104 external system information, 10
5 First campus bus, 106 Second campus bus, 111
1st circuit breaker, 112 2nd circuit breaker, 113 3rd
Circuit breaker, 114 first electric quantity measuring means, 115 second electric quantity measuring means, 1210 switcher, 1211 1st switching terminal of switcher 1210, 1212 switcher 12
10 No. 2 switching terminal, 1213 switching device 1210 selection terminal, 1220 switching device, 1221 switching device 1220
No. 1 switching terminal, 1222 No. 2 switching terminal of the switching unit 1220, 1223 No. 1 switching terminal of the switching unit 1220, 12
N0 switching device, 12N1 switching device 12N0 No. 1 switching terminal, 12N2 switching device 12N0 No. 2 switching terminal, 12N
3 selector 12N0 selection terminal, 131 electric quantity measuring means, 132 electric quantity measuring means, 13N electric quantity measuring means, 141 load, 142 load, 14N load, 15
0 controller, 160 consumer information.

Claims (3)

[Claims] 1. In a distributed power facility connected to an external system, the external system is connected to a first campus bus via an interconnection point, a first circuit breaker and a first electric quantity measuring means. , The distributed power source is connected to the second campus bus via the second circuit breaker and the second electric quantity measuring means, and the first campus bus and the second campus bus are disconnected by the third. The first premises busbar is connected to the first switching terminal of each of the plurality of switching devices, and the second premises busbar is connected to the second switching terminal of each of the plurality of switching devices, The selection terminal of each of the plurality of switching devices is connected to the first switching terminal, or
No. 3 switching terminal or not connecting to either switching terminal can be selected, and each of them is connected to a load via each of the electric quantity measuring means, and is connected to the external system information and the information of the external system. A controller that bidirectionally communicates with information of consumers who are users of the distributed power supply facility, bidirectionally communicates with and controls all the circuit breakers, all the electric quantity measuring means, all the switches, and the distributed power supply. And distributed power equipment. 2. The method of controlling distributed power equipment according to claim 1, wherein the controller controls the switch using the importance of the load from the customer. 3. The method of controlling distributed power equipment according to claim 2, wherein the controller controls the switching device by using a requested amount of power interchange from an external system.