WO2016031755A1

WO2016031755A1 - Electricity-generation control system, control device, electricity-generation control method, and program

Info

Publication number: WO2016031755A1
Application number: PCT/JP2015/073681
Authority: WO
Inventors: 井上　敬
Original assignee: 日本電気株式会社
Priority date: 2014-08-25
Filing date: 2015-08-24
Publication date: 2016-03-03
Also published as: JP6409875B2; JPWO2016031755A1

Abstract

If the state of a PCS is unstable (i.e. the PCS could be in a stopped state or an operational state), there is the risk of being unable to transmit PCS control information. By keeping track of whether the PCS is in the stopped state or the operational state and transmitting control information when the PCS transitions from the stopped state to the operational state, said control information can be sent to the PCS reliably.

Description

Power generation control system, control device, power generation control method and program

[Description of related applications]
The present invention is based on a Japanese patent application: Japanese Patent Application No. 2014-169987 (filed on August 25, 2014), and the entire contents of this application are incorporated in the present specification by reference.
The present invention relates to a power generation control system, a control device, a power generation control method, and a program, and in particular, a control device that controls a power conditioner (PCS: Power Conditioning System), a power generation control system including the control device, a power generation control method, and Regarding the program.

In recent years, interest in renewable energy has increased. Power generation systems are also spreading to general businesses and customers other than power companies.

Along with the increase in power generation by power generation facilities other than power companies, the total power generation amount, which is the sum of power generation by other methods such as thermal power, hydropower, and nuclear power, and power generation facilities by power generation facilities other than power companies exceeds the power demand. In some cases, surplus power is generated. In particular, surplus power is likely to occur during periods of low power demand, such as nights, weekends, and large holidays. In order to prevent the generation of such surplus power, a technique for suppressing the power generation amount of power generation equipment other than the power company is known.

As a related technology, Patent Document 1 discloses a power generation system that effectively uses solar power generation by individually suppressing the output of each solar power generation in consideration of the total power generation amount of a plurality of solar power generations. ing.

JP 2013-207862 A

The disclosure of the above prior art document is incorporated herein by reference. The following analysis has been made from the viewpoint of the present invention.
The PCS is a device that converts electric power generated in the power generation device from direct current to alternating current, and is installed on the assumption that a general business operator or a consumer generates power spontaneously. Therefore, there are a plurality of types of PCS depending on each application. For example, there is a PCS (simple PCS) that is operated by electric power generated by a managed solar cell, and a PCS (intelligent PCS) that is supplied with power from a commercial power source. In the case of the simple PCS, the power of the PCS including the power generation control unit is turned off when solar power generation is not performed. In addition, since the intelligent PCS does not generate power at night or the like, it can be considered that only the communication unit can communicate and the power generation control unit enters a sleep state. Furthermore, it can be considered when the memory function of the PCS or the power generation control unit is abnormal. Even if the state of the PCS is changing, the integrated control device of Patent Document 1 is configured to transmit control information to the PCS.

Therefore, control considering the PCS state (operating state, stopped state, recovery from abnormality, etc.) could not be performed.

The control device according to the first aspect of the present invention includes control information acquisition means for acquiring control information for controlling the power output from the power conditioner from the host monitoring device, and the power conditioner outputs based on the control information. Communication means for transmitting the control information acquired by the control information acquisition means to the power conditioner when the power to be controlled is changed to a controllable state.

The power generation control system according to the second aspect of the present invention includes a power conditioner capable of controlling the amount of power generation, a higher-level monitoring device that outputs control information for controlling the power output by the power conditioner, A control device that controls the power conditioner based on the control information input from the host monitoring device, the control device acquiring control information from the host monitoring device, and the power And a communication unit that transmits the control information acquired by the control information acquisition unit to the power conditioner when the conditioner is changed to a state in which the power output based on the control information can be controlled.

The control device according to the present invention can detect when the PCS has changed to a state in which the output power can be controlled based on the control information, and can transmit the latest information to the PCS.

It is a block diagram which illustrates the composition of the power generation control system in a 1st embodiment. It is a flowchart which illustrates control of the control apparatus in 1st Embodiment. It is a block diagram which illustrates the composition of the power generation control system in a 2nd embodiment. It is a flowchart which illustrates control of the control apparatus in 2nd Embodiment. It is a block diagram which illustrates control of the power generation control system in a 3rd embodiment. It is a flowchart which illustrates control of the control apparatus in 3rd Embodiment. It is a flowchart which illustrates control of the control apparatus in 4th Embodiment. It is a sequence diagram which shows an example of the acquisition process of the suppression control rate based on a schedule etc. It is a figure for demonstrating the structure by which the management apparatus is arrange | positioned as a high-order monitoring apparatus. It is a figure for demonstrating another structure by which the management apparatus is arrange | positioned as a high-order monitoring apparatus. It is a figure which shows the specific structural example of a control apparatus.

<First Embodiment>
As described above, there are a plurality of types of PCS. For example, there is a PCS (simple PCS) that is operated by power generated by a managed solar cell, a PCS (intelligent PCS) that is supplied with power from a commercial power source, and the like. Here, when power is generated by solar cells using sunlight, power generation is not performed in the shaded state. The simple PCS is turned off when power generation is not performed. Therefore, when the control device transmits the control information to the simple PCS, the control information may not be received on the simple PCS side.

Therefore, the control device according to the present embodiment transmits the latest control information to the PCS when the PCS can receive the control information (when the PCS is turned on).

(Constitution)
FIG. 1 is a block diagram illustrating the configuration of a power generation control system 100 according to the first embodiment. In the present embodiment, an embodiment for controlling the PCS provided in the solar power generation device is disclosed. Referring to FIG. 1, the power generation control system 100 includes a control device 110, a higher-level monitoring device 20, and a PCS 130.

The control device 110 includes a control information acquisition unit 11, a nonvolatile memory 12, a control unit 13, a communication unit 14, and a detection unit 15.

The control information acquisition unit 11 acquires the suppression control rate as control information output from the higher-level monitoring device 20 described later, and outputs the suppression control rate to the control unit 13. Here, the suppression control rate as the control information is a power generation rate [%] with respect to a power generation amount that can be generated by the PCS 130 described later. In this embodiment, the suppression control rate is used as the control information. However, the control information is the suppression rate [%] with respect to the power generation amount that can be generated by the PCS 130, the suppression power value [W] that is suppressed by the PCS 130, and the PCS 130 that generates power. The power generation amount [W] to be performed may be used.

The non-volatile memory 12 stores a suppression control rate as control information output from the higher-level monitoring device 20 described later. Here, the control information includes a suppression control rate for controlling the PCS 130, weather information, sunrise and sunset times, and the like. The non-volatile memory 12 also stores PCS 130 status information received from the PCS 130. The state information is information indicating the state of the PCT 130. The state information may be information on whether the machine is in an operating state or a stopped state, a maximum power generation amount that can be generated, an instantaneous power generation amount, or the like.

The control unit 13 controls the PCS 130 based on the status information of the PCS 130 received from the detection unit 15 described later. Furthermore, the control unit 13 performs data processing such as framing and header processing included in the communication processing when performing suppression control on the PCS 130.

The communication unit 14 transmits control information stored in the nonvolatile memory to the PCS 130. In addition, the communication unit 14 receives information transmitted from the PCS 130. The communication unit 14 is a communication interface for the PCS 130, and converts the suppression information into a communication message conforming to the PCS 130. The communication unit 14 individually corresponds to the assumed protocol. As a communication medium, an Ethernet (registered trademark) line, a coaxial cable, a control line such as RS-485 can be used. On the other hand, as a communication method between the host monitoring device 20 and the control device 110 used by a management company (superior manager) that performs power system management, there are various methods such as an optical cable and a mobile phone that are laid independently by the power company. is assumed.

The detection unit 15 detects that the PCS 130 has changed to a state in which power can be controlled via the communication unit 14. In other words, the detection unit 15 detects that the PCS 130 is in a stopped state (a state where communication with the control device 110 is impossible, a state where power is not supplied to the PCS 130, a state where the PCS 130 cannot generate power, a PCS 130 is received by the volatile memory 31 The information that the PCS 130 has received in the volatile memory 31 from the operating state (a state in which communication with the control device 110 is possible, a state in which power is supplied to the PCS 130, a state in which the PCS 130 can generate power), and the like. ) Is detected. Further, the detection unit 15 may be able to detect whether the PCS 130 is in a stopped state or an operating state.

The host monitoring device 20 is installed in an electric power company or the like, and sends a suppression control rate overlooking the entire power system to the control device 110. Specifically, the host monitoring device 20 sends a signal of the power generation rate of the PCS 130 as control information necessary for power system stabilization decided by the power company to the control device 110. The host monitoring device 20 is connected to the control device 110 using a private network such as an electric power company or other communication methods.

The PCS 130 includes a communication unit 32, a volatile memory 31, and a power generation control unit 33. Further, the PCS 130 of this embodiment is operated by the power generated by the managed solar cell, and does not have a power source that can supply power independently.

The volatile memory 31 stores control information acquired by the communication unit 32 described later, the state of the PCS 130, the instantaneous power generation amount of the PCS 130, and the like. Here, since the volatile memory 31 is a memory that cannot hold the stored information unless power is supplied, the volatile memory 31 stores the power when the power generated by the solar cell is lost and the PCS 130 is stopped. The control information is lost.

The communication unit 32 receives control information from the communication unit 13, and transmits to the communication unit 13 an answerback indicating whether the setting of the PCS 130 and the setting of the control information is successful, the instantaneous power generation amount of the PCS 130, and the like. The communication unit 32 converts information related to the PCS 130 into a communication message that can be communicated with the communication unit 14 and executes communication.

The power generation control unit 33 executes power generation control based on the control information stored in the volatile memory 31.

(Control flow)
FIG. 2 is a flowchart illustrating the control of the control device 110 according to the first embodiment. A control flow of the control device 110 according to the first embodiment will be described with reference to FIG.

In step S10, upon receiving an instruction from the control unit 13, the communication unit 14 transmits a signal for confirming the status of the PCS 130 to the PCS 130. Here, the transmission of the signal for confirming the status to the PCS 130 by the communication unit 14 may be performed periodically, or may be transmitted in accordance with an instruction from the host monitoring device 20 or the control unit 13.

In step S <b> 20, the detection unit 15 determines whether the communication unit 14 has received an answer back indicating whether the communication unit 14 has successfully received a status confirmation signal from the PCS 130, and determines whether the PCS 130 is in a stopped state or an operating state. Judging. Specifically, if the communication unit 14 receives an answer back from the PCS 130 within a predetermined period after the communication unit 14 transmits a signal for confirming the situation, the detection unit 15 determines that the PCS 130 is operating. End the flow. If the communication unit 14 does not receive an answer back from the PCS 130 within a predetermined period after the communication unit 14 transmits a signal for confirming the situation, the detection unit 15 determines that the PCS 130 is in a stopped state, and the step Proceed to S30.

In step S30, the communication unit 14 repeatedly transmits a signal for confirming the status of the PCS 130 to the PCS 130 at predetermined intervals, and transmits a signal for confirming the status of the PCS 130 to the PCS 130 until there is an answer back. If there is an answer back from the PCS 130, the detection unit 15 determines that the PCS 130 has changed from the stopped state to the operating state, and proceeds to step S40. Here, with the predetermined interval, transmission may be repeated periodically, or transmission may be performed at different intervals based on instructions from the host monitoring device 20 or the control unit 13.

In step S40, the control unit 13 receives information from the detection unit 15 that the PCS 130 has shifted from the stopped state to the operating state. Thereafter, the control unit 13 instructs the communication unit 14 to transmit control information to the PCS 130. Upon receiving the instruction, the communication unit 14 transmits the control information stored in the nonvolatile memory 12 to the PCS 130, and ends the flow. Here, the information sent from the host monitoring device 20 may be directly sent to the PCS 130.

(Function and effect)
By performing the above control, the latest control information can be reliably transmitted to the PCS when the PCS can control the power. For example, the latest control information can be reliably transmitted to the PCS when the PCS can be received. In addition, since the control information can be acquired when the stored control information disappears because the PCS power is turned off, the period during which the suppression control is not performed despite the suppression information is reduced. be able to. Moreover, since the solar power generation facility is assumed, the power generation state is unstable, for example, the solar power generation becomes incapable of generating power due to the shade. When using a simple PCS (PCS operating with the power generated by a managed solar cell), the power of the simple PCS is frequently turned on and off. Since the control information is sent when the power is turned on, the period during which the PCS is controlled regardless of the control information can be reduced even though the control device has the PCS control information.

<Second Embodiment>
(Characteristics of the second embodiment)
In the configuration of the first embodiment, a confirmation signal is transmitted from the control device 110, and whether or not the PCS 230 can communicate is determined based on the presence or absence of an answerback. On the other hand, in the second embodiment, no answer back is used, and the PCS 230 notifies that communication is possible (power is turned on). With the above configuration, the control device 210 does not need to send a confirmation signal to the PCS 230, and therefore can more easily determine whether the PCS 230 can receive control information.

(Constitution)
FIG. 3 is a block diagram illustrating the configuration of the power generation control system 200 according to the second embodiment. In the present embodiment, an embodiment for controlling the PCS provided in the solar power generation device is disclosed. Referring to FIG. 3, the power generation control system 200 includes a control device 210, a host monitoring device 20, and a PCS 230.

The control device 210 includes a control information acquisition unit 11, a nonvolatile memory 12, a control unit 13, a communication unit 14, and a detection unit 15.

The PCS 230 includes a communication unit 32, a volatile memory 31, a power generation control unit 33, and a detection unit 34.

The detection unit 34 detects that the PCS 230 has changed to a state in which power can be controlled. In other words, the detection unit 34 indicates that the PCS 230 is in a stopped state (a state in which communication with the control device 210 is impossible, a state in which no power is supplied to the PCS 230, a state in which the PCS 230 cannot generate power, and a PCS 230 in the volatile memory 31). From the state in which the received information cannot be written, etc., from the operating state (a state in which communication with the control device 210 is possible, a state in which power is supplied to the PCS 230, a state in which the PCS 230 is capable of generating power, and the PCS 230 is received by the volatile memory 31 Detects changes to the state in which information can be written. Further, the detection unit 34 may be able to detect whether the PCS 230 is in a stopped state or an operating state.

(Control flow)
FIG. 4 is a flowchart illustrating the control of the control device 210 according to the second embodiment. A control flow of the control device 210 according to the second embodiment will be described with reference to FIG.

In step S50, the communication unit 14 receives a signal indicating a change in the state of the PCS 230 detected by the detection unit 34 (a signal indicating that the PCS 230 has changed from the stopped state to the operating state) through the communication unit 32. As shown in FIG. 4, the signal indicating the state change of the PCS 230 may be called an activation signal. If the communication part 14 receives the above-mentioned signal, it will progress to step S40. The signal indicating the state change of the PCS 230 may be configured such that the PCS 230 itself transmits a packet, or the detection means (the PCS 230 and the control unit 13 (or the communication unit 14) that can detect that the PCS is turned on is connected to the LAN cable. The control device 210 may be configured to connect and acquire startup information. The detection means described above may be wired or may be wirelessly connected.

In step S40, when a signal indicating a change in the state of the PCS 230 is received, the detection unit 15 determines that the PCS 230 has shifted from the stopped state to the operating state, and transmits information to the control unit 13. Upon receiving the information, the control unit 13 instructs the communication unit 14 to transmit the control information to the PCS 230. Upon receiving the instruction, the communication unit 14 transmits the control information stored in the nonvolatile memory 12 to the PCS 230, and ends the flow.

(Function and effect)
Compared with the first embodiment, since the number of times of transmission from the control device to the PCS can be reduced, control is performed while reliably transmitting the latest control information to the PCS when the PCS is in a state where the power can be controlled. The power consumption in the apparatus can be reduced. Also in this embodiment, as in the first embodiment, the communication unit 14 of the control device 210 may perform an operation of transmitting a signal for confirming the situation to the PCS 230 and detecting a change in the state. That is, it is also possible to adopt a configuration that switches between the PCS state change detection method of the first embodiment and the PCS state change detection method of the second embodiment.

<Third Embodiment>
(Constitution)
FIG. 5 is a block diagram illustrating the configuration of a power generation control system 300 according to the third embodiment. The third embodiment will be described with reference to FIG. Note that description of the blocks described in the first embodiment (blocks described in FIG. 1) is omitted.

Referring to FIG. 3, the power generation control system 300 includes a control device 310, a host monitoring device 20, and n PCS 230-1 to PCS 230-n.

The control device 310 includes a control information acquisition unit 11, a nonvolatile memory 12, a control unit 13, a communication unit 14, and a detection unit 15.

The PCS 230-1 to PCS 230-n include communication units 32-1 to 32-n, power generation control units 33-1 to 33-n, detection units 34-1 to 34-n, and nonvolatile memory 35-1. To 35-n. The PCSs 230-1 to 230-n may be the same type of PCS or may be composed of a plurality of types of PCS. Hereinafter, when the PCSs 230-1 to 230-n and their internal configurations are not particularly distinguished, they are referred to as the PCS 230, the communication unit 32, the power generation control unit 33, the detection unit 34, and the nonvolatile memory 35. In the present embodiment, only one communication unit 14 exists. However, a plurality of communication units may be provided and connected to PCSs 230-1 to 230-n corresponding to the plurality of communication units. A communication unit may be provided for each predetermined group of the plurality of PCSs 230.

The nonvolatile memory 35 stores the control information acquired by the control information acquisition unit 11 from the host monitoring device 20, the instantaneous power generation amounts of the PCS 230-1 to 230-n acquired via the communication unit 14, and the like.

(Control flow)
FIG. 6 is a flowchart illustrating the control of the control device 310 according to the third embodiment. A control flow of the control device 310 according to the third embodiment will be described with reference to FIG. In addition, since step S40 and step S50 have been described in the second embodiment, description thereof will be omitted.

In step S50, when the communication unit 14 acquires an activation signal from any of the PCSs 230-1 to 230-n, the process proceeds to S60.

In step S60, the control unit 13 determines whether or not the detection unit 15 has acquired a plurality of activation signals from any of the PCSs 230-1 to 230-n from the communication unit 14. Specifically, the control unit 13 determines that a plurality of PCSs among the PCSs 230-1 to 230-n are activated at the same time when the activation signal is sent from the detection unit 15 a plurality of times within a predetermined period. Then, the process proceeds to step S70. The control unit 13 determines that only one of the PCSs 230-1 to 230-n has been activated when the activation signal is sent only once from the detection unit 15 within a predetermined period, and the step Proceed to S40.

In step S70, the control unit 13 acquires the priority order of the PCS that has acquired the plurality of activation signals from the nonvolatile memory 12, and proceeds to step S80.

In step S80, the control unit 13 instructs the communication unit 14 to transmit control information to the PCS 230 based on the acquired priority order. Upon receiving the instruction, the communication unit 14 transmits the control information stored in the nonvolatile memory 12 to the PCS 230, and ends the flow. As described above, the present invention can also be applied to a configuration including a plurality of PCSs 230.

<Fourth Embodiment>
(Constitution)
About the structure of the electric power generation control system 300 which concerns on 4th Embodiment, since it is the same as that of 2nd Embodiment, description is abbreviate | omitted (refer FIG. 5).

(Control flow)
FIG. 7 is a flowchart illustrating the control of the control device 310 according to the fourth embodiment. A control flow of the control device 310 according to the fourth embodiment will be described with reference to FIG.

In step S100, the control unit 13 acquires the state of the PCS 230 stored in the nonvolatile memory 12. If the acquired state of the PCS 230 is in a stopped state, the process proceeds to step S110, and if it is in an operating state, the flow ends. Here, the information stored in the nonvolatile memory 12 is acquired. However, the information may be sequentially acquired by the communication unit 14.

In step S110, the control unit 13 determines whether or not the communication unit 14 has received an activation signal from the PCS 230. If the activation signal is received, the process proceeds to step S120. If the activation signal is not received, step S110 is repeated until the activation signal is received, and whether or not the activation signal is received from the PCS 230 is determined. Check.

In step S120, the control unit 13 determines whether or not the previous control information transmitted to the PCS 230 matches the control information currently stored in the nonvolatile memory 12. If the control information does not match, the process proceeds to step S130. If the control information matches, the flow ends. Here, it is configured to determine whether or not the control information matches, but when the control information is transmitted to the PCS 230 within a predetermined period (for example, 5 minutes), the control information transmitted last time and the current The control information may be regarded as the same and the control information is not transmitted.

In step S130, the control unit 13 instructs the communication unit 14 to transmit control information to the PCS 230. Upon receiving the instruction, the communication unit 14 transmits the control information stored in the nonvolatile memory 12 to the PCS 230, and proceeds to step S140. Although the configuration is such that the control information stored in the nonvolatile memory 12 is transmitted, the control information acquired from the host monitoring device 20 may be transmitted directly.

In step S140, the control unit 13 determines whether or not the PCS 230 responds to the fact that the communication unit 14 has transmitted control information to the PCS 230. If the communication unit 14 receives a response from the PCS 230 during a predetermined period, the process proceeds to step S150 because there is a response from the PCS 230, and the communication unit 14 does not receive a response from the PCS 230 during the predetermined period. If there is no response from the PCS 230, the process proceeds to step S160.

In step S150, the control unit 13 sets the state of the PCS 230 as the operating state, overwrites the state of the PCS 230 stored in the nonvolatile memory 12, and ends the flow.

In step S160, the control unit 13 sets the state of the PCS 230 to the stopped state, overwrites the state of the PCS 230 stored in the nonvolatile memory 12, and returns to step S100.

(Function and effect)
In the configuration in which the non-volatile memory 34 is provided in the PCS 230, the received control information is not lost even when the PCS 230 is turned off, and thus it is not necessary for the PCS 230 to transmit already acquired control information. In the control of the fourth embodiment, when the control information transmitted last time matches the control information to be transmitted this time, the control information is not sent, and therefore wasteful communication can be reduced.

From the first embodiment to the fourth embodiment described above, it is possible to detect that the power of the PCS 230 is turned on (becomes operating) and to control the power output by the PCS 230 based on the control information. However, the present invention is not limited to this configuration, and the volatile memory 31 and the nonvolatile memory 34 are out of order. It may be determined that the output power is changed to a state in which the output power can be controlled. In addition, it is detected that the communication unit 31 or the power generation control unit 32 has returned from a failure state to a normal state, and the PCS 230 determines that the power output based on the control information can be controlled. You may do it.

In the above embodiment, solar power generation has been described as an example of renewable energy, but the application target of the present invention is not limited to this. That is, the power generation control system according to the present invention can be applied to other renewable energy (for example, wind power generation), a power storage system, and the like.

Furthermore, the power control system according to the present invention is integrated with functions such as a power meter that automatically transmits power consumption to a power company through a communication function and an energy management system that manages power in the home at the home level. It is also possible to operate. In addition, the power generation control system according to the present invention can be applied to a grid operating company such as an electric power company, or a business operator that has a similar power grid. When solar cells are introduced rapidly, it may be possible to exceed the limit of power generation capacity in small-scale power systems such as remote islands. Therefore, the power generation control system according to the present invention can be widely used even in such a small-scale system.

The embodiment can be changed and adjusted based on the basic technical idea of the present invention. Specifically, it can be appropriately performed within a range in which the embodiments can be combined and changed. That is, the present invention includes various variations and modifications that can be made by those skilled in the art according to the entire disclosure including the claims and the technical idea.

For example, in each of the above-described embodiments, the host monitoring device 20 transmits the suppression control rate as the control information, and the control information acquisition unit 11 receives the suppression control rate. Is not limited to this form. For example, the control information acquisition unit 11 requests the host monitoring device 20 to transmit a suppression control rate based on a predetermined time interval, schedule, etc., and the host monitoring device 20 sets the suppression control rate as control information. A transmission configuration can also be adopted. FIG. 8 is a sequence diagram illustrating an example of a suppression control rate acquisition process based on a schedule or the like. In the example of FIG. 8, the control device obtains the suppression control rate by requesting the higher-level monitoring device 20 to transmit the suppression control rate at a predetermined timing (S10-11 to S10-12) ( S10-13).

In the above-described embodiment, the storage location of the control information in the PCS has been described as being a volatile memory. However, the storage location of the control information in the PCS may not be a volatile memory. For example, the control information is stored in a non-volatile memory, or backed up to another auxiliary storage device. Even in such a case, when the power of the PCS has been turned off for a long period of time, the control information may become out of date and may not be suitable for the situation on the newer power system side. According to the control device of each embodiment described above, since newer control information can be provided after the PCS is activated, it is possible to quickly resume preferable suppression control and the like.

Further, the host monitoring device of each of the above embodiments is a management device that receives connection information regarding the distribution path and power generation control information indicating the output power generation amount from the power system, and transmits a suppression control rate as control information to the control device. Also good. FIG. 9 is a diagram illustrating an example of such a management apparatus.

The management device 20a in FIG. 9 calculates a suppression control rate to be instructed to the PCS 130 based on the connection information and the power generation control information received from the power system 300, and the control device calculates the calculated suppression control rate. Transmitting means 204 for transmitting to 110. Here, the connection information is information indicating which distribution path in the distribution network the photovoltaic power generation apparatus is connected to, that is, the photovoltaic power generation apparatus that outputs power to the power system 900. Created from distribution automation system.

Further, as shown in FIG. 10, a configuration in which the management device 20a transmits a suppression control rate to a plurality of control devices 110a to 110c can be employed. In the example of FIG. 10, one PCS is connected to one control device. However, as described in the third embodiment, a configuration in which a plurality of PCSs are connected to one control device. It may be.

1, 3, and 5, the

control devices

110, 210, and 310 shown in FIG. 11 are connected to the computer constituting the control device with hardware (CPU 1101, storage device 1102, communication device, etc.). ) Can be realized by a computer program that realizes each functional block described above. Further, in each of the embodiments described above, the control device has been described as storing and managing the control information and the state of the PCS 130 in the nonvolatile memory 12, but the control information and the PCS are stored in the auxiliary storage device 1350 shown in FIG. A configuration for storing and managing the state can also be adopted.

[Appendix 1]
Control information acquisition means for acquiring control information for controlling the power output by the power conditioner from the host monitoring device;
Communication means for transmitting the control information acquired by the control information acquisition means to the power conditioner when the power conditioner has changed to a state in which the power output based on the control information can be controlled.
A control device characterized by that.
[Appendix 2]
The control device according to claim 1, wherein the communication unit transmits the control information acquired by the control information acquisition unit to the power conditioner when the power conditioner is powered on.
[Appendix 3]
The communication means transmits the control information acquired by the control information acquisition means to the power conditioner when a storage device included in the power conditioner is ready to store information. The control device according to appendix 1 or 2.
[Appendix 4]
The communication means transmits the signal for confirming the state of the power conditioner, and receives the response signal for the signal for confirming the state from the power conditioner, the control acquired by the control information acquisition means Sending information to the inverter;
The control device according to any one of appendices 1 to 3, characterized in that:
[Appendix 5]
The communication means transmits the control information acquired by the control information acquisition means to the power conditioner when receiving a signal indicating that the power conditioner is powered from the power conditioner.
The control device according to any one of appendices 1 to 3, characterized in that:
[Appendix 6]
The communication means does not transmit the control information when the communication means is transmitting control information to the power conditioner within a predetermined period.
The control device according to any one of appendices 1 to 3, characterized in that:
[Appendix 7]
The communication means does not transmit the control information to the power conditioner when the control information transmitted last time matches the control information to be transmitted this time. The control device according to any one of the above.
[Appendix 8]
A power conditioner that can control the amount of power generation,
A host monitoring device that outputs control information for controlling the power output by the power conditioner;
A control device for controlling the power conditioner based on control information input from the host monitoring device, and
The controller is
Control information acquisition means for acquiring the control information from the host monitoring device;
Communication means for transmitting the control information acquired by the control information acquisition means to the power conditioner when the power conditioner is changed to a state in which the power output based on the control information can be controlled. Power generation control system characterized by
[Appendix 9]
The power conditioner includes a volatile memory and uses power obtained by solar power generation as a power source.
The power generation control system according to appendix 8, wherein
[Appendix 10]
The power conditioner includes a nonvolatile memory and uses power obtained by solar power generation as a power source.
The power generation control system according to appendix 8, wherein
[Appendix 11]
Processing to acquire control information for controlling the power output from the inverter from the host monitoring device,
A process of transmitting the control information acquired by the control information acquisition means to the power conditioner when the power conditioner has changed to a state in which the power output based on the control information can be controlled;
A power generation control program that causes a computer to execute.
[Appendix 12]
Obtain control information for controlling the power output by the inverter from the host monitoring device,
When the power conditioner changes to a state in which the power output based on the control information can be controlled, the control information acquired by the control information acquisition means is transmitted to the power conditioner.
A power generation control method characterized by the above.
[Appendix 13]
Furthermore, the power conditioner comprises a detection means for detecting that the power output based on the control information has changed to a state in which the power can be controlled.
The communication unit transmits the control information acquired by the control information acquisition unit to the power conditioner when the detection unit detects that the power conditioner has changed to a state in which power can be controlled.
The control device according to any one of appendices 1 to 7, characterized in that:
[Appendix 14]
The appendix 13 is characterized in that the detection means detects that the power conditioner has changed to a state in which the power output can be controlled based on control information when the power conditioner is turned on. Control device.
[Appendix 15]
The detecting means detects that the power conditioner has changed to a state in which the power output from the power conditioner can be controlled based on the control information when the storage device included in the power conditioner is in a state where it can accumulate information. Item 14. The control device according to appendix 13.
[Appendix 16]
The communication means transmits a signal for confirming a state of the inverter;
The control means detects that the power conditioner is turned on when receiving a signal for the transmission from the power conditioner.
The control device according to any one of supplementary notes 13 to 15, wherein
[Appendix 17]
The detecting means detects that the power conditioner is turned on when the communication means receives a signal indicating that the power conditioner is turned on from the power conditioner.
The control device according to any one of supplementary notes 13 to 15, characterized by:
[Appendix 18]
The control means compares the control information transmitted last time with the control information to be transmitted this time, and determines whether or not the control information transmitted last time and the control information to be transmitted this time match. And
The communication means does not transmit the control information to the power conditioner when the control information transmitted last time matches the control information to be transmitted this time. The control device according to any one of the above.

DESCRIPTION OF SYMBOLS 11 Control information acquisition part 12 Non-volatile memory 13 Control part 14 Communication part 20 Host monitoring apparatus 20a Management apparatus 31 Volatile memory 32 Communication part 33 Electric power generation control part 34

Non-volatile memory

100, 200, 300 Electric power

generation control system

110, 210, 310

Control device

130, 230 PCS
203 Calculation means 204 Transmission means 900 Power system 1101 Control unit 1102 Non-volatile memory 1310 Communication device 1311 Input device 1312 Output device 1320 CPU
1340 storage device

Claims

Control information acquisition means for acquiring control information for controlling the power output by the power conditioner from the host monitoring device;
Communication means for transmitting the control information acquired by the control information acquisition means to the power conditioner when the power conditioner has changed to a state in which the power output based on the control information can be controlled.
A control device characterized by that.
The communication means transmits the signal for confirming the state of the power conditioner, and receives the response signal for the signal for confirming the state from the power conditioner, the control acquired by the control information acquisition means Sending information to the inverter;
The control device according to claim 1.
The communication means transmits the control information acquired by the control information acquisition means to the power conditioner when receiving a signal indicating that the power conditioner is powered from the power conditioner.
The control device according to claim 1 or 2, wherein
The communication means does not transmit the control information when the communication means is transmitting control information to the power conditioner within a predetermined period.
The control device according to any one of claims 1 to 3, wherein
The communication means does not transmit the control information to the power conditioner when the control information transmitted last time coincides with the control information to be transmitted this time. 4. The control device according to any one of 4.
Furthermore, the power conditioner comprises a detection means for detecting that the power output based on the control information has changed to a state in which the power can be controlled.
The communication unit transmits the control information acquired by the control information acquisition unit to the power conditioner when the detection unit detects that the power conditioner has changed to a state in which power can be controlled.
The control device according to claim 1, wherein the control device is a control device.
The power conditioner operates using power obtained by solar power generation as a power source,
The communication means transmits control information in place of control information that has disappeared from the volatile memory of the power conditioner during the stop state when the power conditioner has changed from a stop state to an operating state.
The control device according to claim 1, wherein the control device is a control device.
A power conditioner that can control the amount of power generation,
A host monitoring device that outputs control information for controlling the power output by the power conditioner;
A control device for controlling the power conditioner based on control information input from the host monitoring device, and
The controller is
Control information acquisition means for acquiring the control information from the host monitoring device;
Communication means for transmitting the control information acquired by the control information acquisition means to the power conditioner when the power conditioner is changed to a state in which the power output based on the control information can be controlled. Power generation control system characterized by
The power conditioner includes a volatile memory and uses power obtained by solar power generation as a power source.
The power generation control system according to claim 8.
The control device transmits control information in place of control information that has disappeared from the volatile memory during the stopped state when the inverter is in an operating state from the stopped state.
The power generation control system according to claim 9.
Processing to acquire control information for controlling the power output from the inverter from the host monitoring device,
A process of transmitting the control information acquired by the control information acquisition means to the power conditioner when the power conditioner has changed to a state in which the power output based on the control information can be controlled;
A power generation control program that causes a computer to execute.
Obtain control information for controlling the power output by the inverter from the host monitoring device,
When the power conditioner changes to a state in which the power output based on the control information can be controlled, the control information acquired by the control information acquisition means is transmitted to the power conditioner.
A power generation control method characterized by the above.