JP2016116390A - Power generation control system, power generation control apparatus, power generation control method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which an upper level monitoring apparatus has no means for grasping a state of an actual PCS state and no means to know whether a control according to the actual operation is performed.SOLUTION: By transmitting PCS information to an upper level monitoring apparatus (system server) through a power generation control apparatus (communication adapter), a PCS state can be transmitted in real time to the upper level monitoring apparatus.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power generation control system, a power generation control device, a power generation control method, and a program, and in particular, a power generation control device that monitors and controls the output of a power conditioner (PCS: Power Conditioning System), and a power generation including the power generation control device The present invention relates to a control system, a power generation control method, and a 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. In addition, the invention described in Patent Document 2 is also included.

JP 2013-207862 A JP 2011-078169 A

  The system server managed by the power company is configured to transmit control information for controlling the power generation amount of the PCS to the power generation control device (communication adapter), and to send control information from the power generation control device (communication adapter) to the PCS. ing. However, the system server has no way of grasping the actual state of the PCS, and has no way of knowing whether or not control information corresponding to the actual operating state of the PCS can be transmitted. In other words, since only one-sided control can be performed on the PCS from the system server, there is a possibility that the PCS control becomes inappropriate. Here, PCS refers to a device that converts electric power generated in the power generation device from direct current to alternating current.

  Therefore, an object of the present invention is to provide a power generation control system, a power generation control device, a power generation control method, and a program that contribute to solving such problems.

  The power generation control device of the invention in the present case is a first communication means for acquiring control information for suppressing a power generation amount of a power conditioner, and a first communication means for transmitting the control information to the power conditioner when the control information is received. 2 communication means, wherein the second communication means acquires power generation information relating to the power generation amount of the power conditioner from the power conditioner, and the first communication means transmits the acquired power generation information to the system server. It is characterized by transmitting to.

According to the power generation control device, the power generation control method, and the program according to the present invention, it is possible to notify the system server of the status of the power conditioner.

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 electric power generation 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 electric power generation control apparatus in 2nd Embodiment. It is a block diagram which illustrates the composition of the power generation control system in a 3rd embodiment. It is a flowchart which illustrates control of the electric power generation control apparatus in 3rd Embodiment. It is a block diagram which illustrates the composition of the power generation control system in a 4th embodiment. It is a flowchart which illustrates control of the electric power generation control apparatus in 4th Embodiment. It is a block diagram which illustrates the modification of the electric power generation control system of 4th Embodiment. It is a block diagram which illustrates the composition of the power generation control system in a 5th embodiment. It is a flowchart which illustrates control of PCS in a 5th embodiment. It is a block diagram which illustrates the composition of the power generation control system in a 6th embodiment. It is a flowchart which illustrates control of the electric power generation control apparatus in 6th Embodiment. It is a flowchart which illustrates control of the high-order monitoring apparatus in 6th Embodiment. It is a block diagram which illustrates the composition of the power generation control system in a 7th embodiment. It is a flowchart which illustrates control of PCS in a 7th embodiment. It is a flowchart which illustrates control of the high-order monitoring apparatus in 7th Embodiment.

<First Embodiment>
(Constitution)
FIG. 1 is a block diagram illustrating the configuration of a power generation control system 1000 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 1000 includes a power generation control device 100, a host monitoring device (system server) 200, and a PCS 300.

  The power generation control device 100 includes a first communication unit 101 and a second communication unit 102.

  The first communication unit 101 acquires a suppression control rate as control information for controlling the PCS 300 output from the host monitoring device 200 described later, and outputs the acquired suppression control rate to the second communication unit 102. In addition, the first communication unit 101 transmits information acquired from the PCS 300 to the upper monitoring apparatus 200. That is, the power generation control device 100 and the host monitoring device 200 transmit and receive data bidirectionally. As a specific communication method, as a communication method between the host monitoring device 200 and the power generation control device 100 used by a management company (superior administrator) that performs power system management, an optical cable, a mobile phone, or the like laid by the power company independently. Various methods are assumed. 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 300 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 300, the suppression power value [W] that is suppressed by the PCS 300, and the PCS 300 that generates power. The power generation amount [W] to be performed may be used.

  The second communication unit 102 transmits the suppression control rate received from the first communication unit 101 to the PCS 300. In addition, the second communication unit 102 acquires the instantaneous power generation amount [W] and the power generation fluctuation rate [W / s] generated by the PCS 300 via the PCS communication unit 301 described later. Specifically, the second communication unit 102 is a communication interface for the PCS 300, and converts control information into a communication message conforming to the PCS 300. The 2nd communication part 102 respond | corresponds individually about 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.

  The host monitoring device 200 includes a host communication unit 201. The host monitoring device 200 is installed in an electric power company or the like, and transmits a suppression control rate overlooking the entire power system to the power generation control device 100 via the host-side communication unit 201.

  The higher-level communication unit 201 transmits a suppression control rate signal as control information necessary for power system stabilization determined by the power company to the power generation control device 100. The higher-level communication unit 201 is connected to the first communication unit 101 using a private network such as an electric power company or other communication methods.

  The PCS 300 includes a PCS communication unit 301 and a power generation control unit 302. The PCS 300 is operated by the power generated by the managed solar cell, does not always have a power source, and does not have a nonvolatile storage device that holds information when power supply is stopped. Shall. Note that the PCS 300 may hold a constant power supply (for example, receive power supply from a commercial power supply) and have a nonvolatile memory function.

  The PCS communication unit 301 acquires the suppression control rate from the second communication unit 102. In addition, the PCS communication unit 301 acquires the instantaneous power generation amount and the power generation fluctuation rate that are generated by the PCS 300, and transmits them to the second communication unit 102 of the power generation control device 100.

The power generation control unit 302 performs control to change the power generation amount based on the suppression control rate acquired by the PCS communication unit 301. Specifically, the power generation control unit 302 outputs the output power from the DC / AC inverter if the output power from the DC / AC inverter (not shown) is higher than the power to be generated by the control information (suppression control rate). In order to approach the control information (suppression control rate), the output current does not flow from the DC / AC inverter. On the other hand, if the output power from the DC / AC inverter is lower than the power to be generated by the control information (suppression control rate), the DC / AC inverter is used to bring the output power from the DC / AC inverter closer to the PCS output limit value. So that the output current flows.
(Control flow)
FIG. 2 is a flowchart illustrating the control of the power generation control device 100 according to the first embodiment. A control flow of the power generation control device 100 according to the first embodiment will be described with reference to FIG.

  In step S <b> 1010, the first communication unit 101 acquires the suppression control rate from the higher-level monitoring device 200 via the higher-level communication unit 201. In the present embodiment, it is assumed that the suppression control rate sent from the host monitoring device 200 is passively received. However, the power generation control device 100 may actively request the host monitoring device 200. .

  In step S <b> 1020, the second communication unit 102 transmits the suppression control rate acquired from the first communication unit 101 to the PCS communication unit 301. The second communication unit 102 may be configured to sequentially transmit the suppression control rate at the timing when the suppression control rate is received, or may be configured to transmit the suppression control rate at a certain period.

  In step S1030, the second communication unit 102 acquires the instantaneous power generation amount and the power generation fluctuation rate of the PCS 300 from the PCS 300 via the PCS communication unit 301. The second communication unit 102 sends the acquired instantaneous power generation amount and power generation fluctuation rate to the first communication unit 101.

In step S1040, the first communication unit 101 transmits the instantaneous power generation amount and the power generation fluctuation rate acquired from the second communication unit 102 to the higher-level monitoring device 200 via the higher-level communication unit 201, and ends the flow. In this embodiment, the first communication unit 101 and the second communication unit 102 are provided. However, the first communication unit 101 and the second communication unit 102 are both configured as one communication unit. It may be. In other words, the “first communication unit” and the “second communication unit” described in the claims do not need to be separate devices, and include one having two functions as one device.
(Function and effect)
The above control can notify the host monitoring apparatus 200 of the state of the PCS 300 by transmitting the instantaneous power generation amount and the power generation fluctuation rate in the PCS 300 to the host monitoring apparatus 200. Further, the host monitoring device 200 can determine whether or not the transmission control rate being transmitted is appropriate.
<Second Embodiment>
(Constitution)
FIG. 3 is a block diagram illustrating the configuration of a power generation control system 1100 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 1100 includes a power generation control device 110, a host monitoring device (system server) 200, and a PCS 300.

  The power generation control device 110 includes a first communication unit 101, a second communication unit 102, an information transmission determination unit 113, and a storage unit 114.

  The first communication unit 101 and the second communication unit 102 are the same as those in the first embodiment.

  The information transmission determination unit 113 determines whether or not to transmit the instantaneous power generation amount and the power generation fluctuation rate to the host monitoring device 200.

  The storage unit 114 stores a suppression control rate as control information output from the higher-level monitoring device 200. Here, the control information is not limited to the suppression control rate, but includes a suppression control rate for controlling the PCS 300, weather information, sunrise and sunset times, mode information for controlling the PCS 300, and the like. The above-described mode information includes a plurality of types of modes and is sent from the host monitoring apparatus 200. Specifically, the aforementioned modes include real-time control, output control calendar control, and default calendar control. Each mode will be described with reference to Table 1. The real-time control controls the amount of power generated by the PCS 300 in units of hours and minutes. Specifically, control such as limiting the power generation of the PCS 300 by 50% from 12:00 to 13:00 can be considered. The output control calendar controls the power generation amount of the PCS 300 on a daily or weekly basis. Specifically, control such as limiting the power generation amount of the PCS 300 by 60% during the Golden Week period can be considered. The default calendar control controls the power generation amount of the PCS 300 on a monthly basis. Specifically, in November, control such as limiting the power generation amount of the PCS 300 by 40% can be considered. Each mode is given a priority as information. The priority is a priority order in which mode is used when there are a plurality of modes sent from the host monitoring apparatus to control the PCS. The priorities of the present embodiment are “high”, “medium”, and “low”, and the priorities are set relatively high in the order of “high”, “medium”, and “low”. Relative is the priority between modes. The mode is also given information on the period of use. When the period of use ends, the mode is switched to the next highest priority mode. Various information received from the PCS 300 is also stored. Various information stores information on whether the PCS 300 is operating or stopped, the maximum power generation amount that the PCS 300 can generate, the instantaneous power generation amount of the PCS 300, and the like.

The host monitoring device 200 and the PCS 300 are the same as those in the first embodiment.

(Control flow)
FIG. 4 is a flowchart illustrating the control of the power generation control device 100 according to the second embodiment. A control flow of the power generation control apparatus 100 according to the second embodiment will be described with reference to FIG. Note that steps S1010 to S1040 have been described with reference to FIG.

  In step S1030, the second communication unit 102 acquires the instantaneous power generation amount and the power generation fluctuation rate of the PCS 300 from the PCS 300 via the PCS communication unit 301, and then proceeds to step S1150.

  In step S1150, based on the mode information stored in the storage unit 114, the second communication unit 102 determines whether or not to switch from a mode having a relatively high priority to a mode having a relatively low priority. to decide. Specifically, whether or not the period determined for each control has ended, whether to switch from real-time control to output control calendar control, from output control calendar control to default calendar control, or from real-time control to default calendar control Judgment by. When the mode is switched from the mode having a relatively high priority to the mode having a relatively low priority, the process proceeds to step S1040. When the mode is not switched from the mode having a relatively high priority to the mode having a relatively low priority, the flow is terminated.

Based on the instantaneous power generation amount and the power generation fluctuation rate received from the power generation control device 110, the host monitoring device 200 determines whether it is necessary to perform the real-time control and the output control calendar control again. If it is determined that the output control needs to be changed, the host monitoring device 200 transmits new control information to the power generation control device 110.
(Function and effect)
The control with higher priority is performed according to the actual situation of the PCS. Opportunity to confirm whether or not additional real-time control (control according to the situation) is necessary by checking the priority level and sending information related to the power generation amount of the PCS 300 to the higher-level monitoring device 200 Can be given. Therefore, the control for the PCS 300 can be more appropriately operated.
<Third Embodiment>
(Constitution)
FIG. 5 is a block diagram illustrating the configuration of a power generation control system 1200 according to the third embodiment. In the present embodiment, an embodiment for controlling the PCS provided in the solar power generation device is disclosed. Referring to FIG. 5, the power generation control system 1200 includes a power generation control device 100, a host monitoring device (system server) 200, and a plurality of PCSs 300-1 to 300-n (n is an integer of 2 or more). .

  The power generation control device 100 and the host monitoring device 200 are the same as those in the first embodiment.

The plurality of PCSs 300-1 to 300-n have the same configuration, and have a configuration in which a plurality of PCSs 300 according to the first embodiment exist. In addition, although several PCS300-1 to 300-n used the same PCS, the structure provided with two or more PCS of a different structure may be sufficient.
(Control flow)
FIG. 6 is a flowchart illustrating the control of the power generation control apparatus 100 according to the third embodiment. A control flow of the power generation control device 100 according to the third embodiment will be described with reference to FIG. Note that steps S1010 to S1040 have been described with reference to FIG.

  In step S1020, second communication unit 102 transmits the suppression control rate to PCS 300 of PCS 300-m (1 ≦ m (integer) ≦ n), and then proceeds to step S1250. In step S1250, the second communication unit 102 determines whether n = m. If n ≠ m, the process returns to step S1020, and the second communication unit 102 performs the same process for PCS300-m + 1. Execute. If n = m, the second communication unit 102 determines that the suppression control rate has been transmitted to all n PCSs, and proceeds to step S1030. In the present embodiment, the second communication unit 102 is configured to transmit the suppression control rate in order from 300-1, but is configured to transmit the suppression control rate to the PCS that can be transmitted. Also good. In addition, the second communication unit 102 transmits to all the PCSs (PCS 300-1 to PCS 300-n) at the same time, and transmits the suppression control rate with the answer back returned from all the PCSs. It may be determined that is completed.

In step S1030, the second communication unit 102 acquires the instantaneous power generation amount and the power generation fluctuation rate from PCS300-m (1 ≦ m (integer) ≦ n), and then proceeds to step S1260. In step S1260, the second communication unit 102 determines whether or not the instantaneous power generation amount and the power generation fluctuation rate have been acquired from all the PCSs. If all pieces of information have been acquired from the PCS, the process proceeds to step S1040. Moreover, the 2nd communication part 102 returns to step S1030, and repeats a process, when the instantaneous electric power generation amount and an electric power generation fluctuation rate are not acquired from all PCS. Specifically, the second communication unit counts up every time the instantaneous power generation amount and the power generation fluctuation rate are acquired from PCS300-m (1 ≦ m (integer) ≦ n), and the count becomes n In addition, it is determined that the instantaneous power generation amount and the power generation fluctuation rate have been acquired from all the PCSs. In the present embodiment, the second communication unit 102 may receive the instantaneous power generation amount and the power generation fluctuation rate in order from 300-1, or the instantaneous power generation amount and the power generation fluctuation rate in order from the receivable PCS 300. May be received.
(Function and effect)
The above control can notify the host monitoring device 200 of the status of all PCSs by transmitting the instantaneous power generation amount and the power generation fluctuation rate in all the PCSs (PCS 300-1 to PCS 300-n) to the host monitoring device 200. it can. Further, when information is provided to the higher-level monitoring device 200, information from all PCSs is collected and transmitted, so the higher-level monitoring device 200 immediately performs processing such as comparison. be able to.
<Fourth Embodiment>
(Constitution)
FIG. 7 is a block diagram illustrating the configuration of a power generation control system 1300 according to the fourth embodiment. In the present embodiment, an embodiment for controlling the PCS provided in the solar power generation device is disclosed. Referring to FIG. 7, the power generation control system 1300 includes a power generation control device 100, a host monitoring device (system server) 200, and a PCS 310.

  The power generation control device 100 and the host monitoring device 200 have the same configuration as that of the first embodiment.

  The PCS 310 includes a PCS communication unit 301, a power generation control unit 302, and an input reception unit 313.

  The PCS communication unit 301 and the power generation control unit 302 have the same configuration as that of the first embodiment.

The input receiving unit 313 receives input of power generation amount restriction information from the user. Here, the power generation amount restriction information is an allowable suppression control rate that can be permitted by the user (for example, “allows suppression to 50% of the power generation amount”). The power generation restriction information only needs to be able to input a restriction amount actually intended by the user, such as a suppression control amount (for example, “allowing suppression to 1.5 kW of power generation amount”) and a target power generation rate (for example, It may be a target power generation amount (for example, “allow power generation up to 1.5 kW”, etc.). The user input form may be a form for inputting a numerical value or a form for selecting a numerical value (10%, 30%, 50%, 80%, 100%, etc.). Moreover, although the input reception part 313 was set as the structure with which PCS310 was provided, you may comprise so that the input from communication apparatuses (a mobile phone, a smart phone, a tablet, etc.) which can communicate with PCS310 may be received.
(Control flow)
FIG. 8 is a flowchart illustrating the control of the power generation control device 100 according to the fourth embodiment. A control flow of the power generation control apparatus 100 according to the fourth embodiment will be described with reference to FIG. In FIG. 2, step S1010 and step S1020 are the same as those in the first embodiment.

  In step S1020, second communication unit 102 transmits the suppression control rate to PCS 310, and then proceeds to step S1330. In step S <b> 1330, the second communication unit 102 acquires the allowable suppression control rate as the power generation amount restriction information input by the user via the input reception unit 313. Moreover, the 2nd communication part 102 sends the allowable suppression control rate as the acquired electric power generation amount restriction | limiting information to the 1st communication part 101, and progresses to step S1340.

In step S1340, the first communication unit 101 transmits the allowable suppression control rate acquired from the second communication unit 102 to the higher-level monitoring device 200 via the higher-level communication unit 201, and ends the flow. In the present embodiment, the configuration is such that only the allowable suppression control rate is sent to the higher-level monitoring device 200, but the first communication unit 101 sends the acquired instantaneous power generation amount and power generation fluctuation rate to the upper level via the higher-level side communication unit 201. It is good also as a structure which transmits according to the monitoring apparatus 200. FIG. With this configuration, it is possible to notify the host monitoring side of information indicating the user's intention and the state of the PCS 310.
(Function and effect)
In the above control, information indicating the user's intention (whether it is not desired to be suppressed any more or whether it may be suppressed yet) is sent to the higher-level monitoring device 200 by transmitting the allowable suppression control rate set by the user to the higher-level monitoring device 200. The device 200 can be informed.
<Fifth Embodiment>
(Constitution)
FIG. 9 is a block diagram illustrating the configuration of a power generation control system 2000 according to the fifth embodiment. In the present embodiment, an embodiment for controlling the PCS provided in the solar power generation device is disclosed. Referring to FIG. 9, the power generation control system 2000 includes a host monitoring device (system server) 200 and a PCS 310.

The host monitoring device 200 and the PCS 310 have the same configurations as those described in the first embodiment and the fourth embodiment.
(Control flow)
FIG. 10 is a flowchart illustrating the control of the PCS 310 according to the fifth embodiment. A control flow of the PCS 310 according to the fifth embodiment will be described with reference to FIG.

  In step S2010, the PCS communication unit 301 acquires a suppression control rate from the higher-level monitoring device 200 via the higher-level communication unit 201. In the present embodiment, it is assumed that the suppression control rate sent from the higher-level monitoring device 200 is passively received. However, the PCS 310 may request the higher-level monitoring device 200 to acquire the suppression control rate.

  In step S2020, the power generation control unit 302 controls the power generation amount based on the suppression control rate acquired by the PCS communication unit 301.

  In step S2030, the input reception unit 313 acquires the allowable suppression control rate input by the user. When there is no input, information indicating that there is no input is acquired.

In step S2040, when the allowable suppression control rate is acquired, the PCS communication unit 301 transmits the allowable suppression control rate to the higher-level monitoring device 200 via the higher-level communication unit 201, and ends the flow. In the present embodiment, the configuration is such that only the allowable suppression control rate is sent to the higher-level monitoring device 200, but the PCS communication unit 301 monitors the acquired instantaneous power generation amount and power generation fluctuation rate via the higher-level side communication unit 201. It is good also as a structure which transmits according to the apparatus 200. FIG. With this configuration, it is possible to notify the host monitoring side of information indicating the user's intention and the state of the PCS 310. In addition, the present embodiment can be applied to a configuration having PCS 310-1 to PCS 310-n as shown in FIG. For the flow, each PCS 310 is controlled according to the flow of FIG.
(Function and effect)
In the above control, information indicating the user's intention (whether it is not desired to be suppressed any more or whether it may be suppressed yet) is sent to the higher-level monitoring device 200 by transmitting the allowable suppression control rate set by the user to the higher-level monitoring device 200. The device 200 can be informed.
<Sixth Embodiment>
(Constitution)
FIG. 12 is a block diagram illustrating the configuration of a power generation control system 1400 according to the sixth embodiment. In the present embodiment, an embodiment for controlling the PCS provided in the solar power generation device is disclosed. Referring to FIG. 12, the power generation control system 1400 includes a power generation control device 110, a host monitoring device (system server) 200, and a plurality of PCS 320-1 to PCS 320-n.

  The power generation control device 110 includes a first communication unit 101, a second communication unit 102, an information transmission determination unit 113, and a storage unit 114.

  The first communication unit 101 and the second communication unit 102 are the same as those in the first embodiment.

  Whether the information transmission determination unit 113 transmits the allowable suppression control rate to the upper monitoring device 200 based on the allowable suppression control rate acquired from the PCS 320-1 to the PCS 320-n and the suppression control rate acquired from the higher monitoring device 200. To decide. In addition, the information transmission determination unit 113 determines whether it is necessary to notify the user of the current restriction state via the display unit 324 described later.

  The storage unit 114 stores a suppression control rate as control information output from the higher-level monitoring device 200. Here, the control information includes a suppression control rate for controlling PCS 320-1 to PCS 320-n, weather information, sunrise and sunset times, and the like. Various information received from PCS 320-1 to PCS 320-n is also stored. The various information stores information on whether the PCS 320-1 to PCS 320-n is operating or stopped, the maximum power generation amount that can be generated by the PCS 320, the instantaneous power generation amount of the PCS 320-1 to PCS 320-n, and the like.

  The upper monitoring apparatus 200 is the same as that in the first embodiment.

  The PCS 320-1 to PCS 320-n include a PCS communication unit 301, a power generation control unit 302, an input reception unit 313, and a display unit 324.

  The PCS communication unit 301, the power generation control unit 302, and the input reception unit 313 are the same as those in the first embodiment.

  The display unit 324 displays various information to the user. Specific information includes instantaneous power generation amount, integrated power generation amount, power generation rate, suppression rate, allowable suppression control rate, information that the suppression rate exceeds the allowable suppression control rate, weather information, and the like.

In the present embodiment, the input receiving unit 313 and the display unit 324 are assumed to be configured separately, but may be integrated. The integrated configuration may be a touch display.
(Control flow)
FIG. 13 is a flowchart illustrating the control of the power generation control device 110 according to the sixth embodiment. A control flow of the power generation control device 110 according to the sixth embodiment will be described with reference to FIG. Note that steps S1010 and S1020 are described in FIG. 2, and steps S1330 and S1340 are described in FIG.

  In step S1330, the second communication unit 102 acquires the allowable suppression control rate input by the user via the input receiving unit 313, and proceeds to step S1450. In step S1450, the information transmission determining unit 113 compares the allowable suppression control rate with the suppression control rate. If the information transmission determining unit 113 determines that the allowable suppression control rate is greater than the suppression control rate, the process proceeds to step 1340. If the information transmission determining unit 113 determines that the allowable suppression control rate is equal to or lower than the suppression control rate, the process proceeds to step 1460. In addition, when the information transmission determination unit 113 determines that the allowable suppression control rate is equal to or less than the suppression control rate, the information transmission determination unit 113 proceeds to step 1460. If it is determined that the rates are equal, the flow may be terminated. That is, it can also be configured such that the process proceeds to step 1460 only when the allowable suppression control rate is less than the suppression control rate.

  In step 1460, the second communication unit 102 transmits information indicating that the allowable suppression control rate is equal to or lower than the suppression control rate to the PCS communication unit 301. The display unit 324 displays information that the allowable suppression control rate received via the PCS communication unit 301 is equal to or less than the suppression control rate, and ends the flow. The display unit is configured to display information indicating that the allowable suppression control rate is equal to or less than the suppression control rate. Furthermore, there may be a case where control in consideration of the allowable suppression control rate from a plurality of PCS is not performed. Therefore, the display unit 324 may display whether or not the control (feedback control) in consideration of the allowable suppression control rate is being performed.

  FIG. 14 is a flowchart illustrating the control of the higher-level monitoring device 200 according to the sixth embodiment. A control flow of the higher-level monitoring apparatus 200 according to the sixth embodiment will be described with reference to FIG.

  In step S3010, the host monitoring apparatus 200 controls the control information controlling the PCS 320-1 to PCS 320-n from the power generation control apparatus 110, the power generation amount restriction information, and the PCS information (from which PCS from which the power generation control information has been acquired). Information on whether the power generation control information has been acquired (that is, information on which PCS may be fed back) is obtained, and the process proceeds to step S3020.

  In step S3020, the host monitoring apparatus 200 determines whether it is necessary to increase the suppression rate. Specifically, the host monitoring apparatus 200 compares the current suppression control rate with the changed suppression control rate, and determines that the suppression control rate is raised when the changed suppression control rate is large. As a specific example, on the premise of this control, originally, it is necessary to realize a suppression rate of 40%, but once the suppression rate is set to 30%, it is transmitted to the power generation control device, and the feedback is implemented. Can be mentioned. In other words, it is output as a suppression rate of 30% as a command, and then set to a suppression rate of 40%.

In step S3030, the host monitoring apparatus 200 calculates an additional suppression control value based on the following equation (1). Here, n, which is a variable in Expression (1), is the number of PCSs supervised by the power generation control device 110. X is a target suppression rate to be raised. X is a target control rate before being raised. A is the number of PCSs that have acquired power generation control information. The upper monitoring apparatus 200 calculates the additional suppression control value in the following (1), and proceeds to step S3040.

In step S3040, the host monitoring apparatus 200 transmits the suppression control rate calculated in step S3030 to the power generation control apparatus 110, and ends the flow.
(Function and effect)
In the above control, information indicating the user's intention (whether it is not desired to be suppressed any more or whether it may be suppressed yet) is sent to the higher-level monitoring device 200 by transmitting the allowable suppression control rate set by the user to the higher-level monitoring device 200. The device 200 can be informed. Moreover, it can be made to recognize that the suppression is performed exceeding the permissible suppression control rate which the user set. Furthermore, since the suppression control rate can be fed back by the host monitoring apparatus 200, the PCS 320-1 to PCS 320-n can be more appropriately distributed in the suppression control rate.
<Seventh Embodiment>
(Constitution)
FIG. 15 is a block diagram illustrating the configuration of a power generation control system 2200 according to the seventh embodiment. In the present embodiment, an embodiment for controlling the PCS provided in the solar power generation device is disclosed. Referring to FIG. 15, the power generation control system 2200 includes a host monitoring device (system server) 200 and a plurality of PCS 330-1 to PCS 330-n.

  The upper monitoring apparatus 200 is the same as that in the first embodiment.

  The PCS 330 to PCS 330-n include a PCS communication unit 301, a power generation control unit 302, an input reception unit 313, a display unit 324, an information transmission determination unit 334, and a storage unit 335.

  The PCS communication unit 301, the power generation control unit 302, the input reception unit 313, and the display unit 324 have the same configurations as those in the first embodiment and the sixth embodiment.

  The information transmission determining unit 334 transmits the allowable suppression control rate to the upper monitoring device 200 based on the allowable suppression control rate received from the user via the input receiving unit 313 and the suppression control rate acquired from the higher monitoring device 200. Decide whether or not to do. In addition, the information transmission determination unit 334 determines whether it is necessary to notify the user.

The storage unit 335 stores a suppression control rate as control information output from the higher-level monitoring device 200. Here, the control information includes a suppression control rate for controlling the PCS 330 to the PCS 330 -n, weather information, sunrise and sunset times, and the like. Various information is also stored. The various information stores information on whether the PCS 330 to PCS 330-n is operating or stopped, the maximum power generation amount that can be generated by the PCS 330, the instantaneous power generation amount of the PCS 330 to PCS 330-n, and the like.
(Control flow)
FIG. 16 is a flowchart illustrating the control of the PCS 330 according to the seventh embodiment. A control flow of the PCS 330 according to the seventh embodiment will be described with reference to FIG. Note that steps S2010 to S2040 in the present embodiment are the same as steps S2010 to S2040 in the fifth embodiment.

  After obtaining the allowable suppression control rate input by the user in step S2030, the process proceeds to step S2250. In step S2250, the allowable suppression control rate is compared with the suppression control rate. If the allowable suppression control rate is greater than the suppression control rate, the process proceeds to step 2040. If the allowable suppression control rate is equal to or lower than the suppression control rate, the process proceeds to step 2260. When the allowable suppression control rate is equal to or lower than the suppression control rate, the configuration proceeds to step 2260. However, when the allowable suppression control rate is equal to the suppression control rate, the flow may be terminated. good. That is, it is also possible to adopt a configuration in which the process proceeds to step 2260 only when the allowable suppression control rate is less than the suppression control rate.

  In step 2260, the display unit 324 displays information that the allowable suppression control rate is equal to or less than the suppression control rate, and ends the flow. In addition, although it was set as the structure which displays the information which shows that a permissible suppression control rate is below a suppression control rate on the display part 324, you may be alert | reported by audio | voice, the alert | report by a color or light, etc.

  FIG. 17 is a flowchart illustrating the control of the higher-level monitoring device 200 according to the seventh embodiment. With reference to FIG. 17, the control flow of the host monitoring apparatus 200 of the seventh embodiment will be described. Note that steps S3010 to S3030 in the present embodiment are the same as steps S3010 to S3030 in the sixth embodiment.

  After the additional suppression control value is calculated in step S3030, the process proceeds to step S3140.

In step S3140, the host monitoring apparatus 200 transmits the suppression control rate calculated in step S3030 from each PCS 320-1 to the PCS 320-n, and ends the flow.
(Function and effect)
In the above control, information indicating the user's intention (whether it is not desired to be suppressed any more or whether it may be suppressed yet) is sent to the higher-level monitoring device 200 by transmitting the allowable suppression control rate set by the user to the higher-level monitoring device 200. The device 200 can be informed. Moreover, it can be made to recognize that the suppression is performed exceeding the permissible suppression control rate which the user set. Furthermore, since the suppression control rate can be fed back by the host monitoring apparatus 200, the PCS 320-1 to PCS 320-n can be more appropriately distributed in the suppression control rate.

  In the said embodiment, although solar power generation was demonstrated as renewable energy as an example, the application object of this 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.
[Appendix 1]
First communication means for acquiring control information for suppressing the power generation amount of the inverter;
A second communication means for transmitting the control information to the inverter when the control information is received;
The second communication means acquires power generation information related to the power generation amount of the power conditioner from the power conditioner,
The first communication means transmits the acquired power generation information to the system server.
[Appendix 2]
The power generation control device according to appendix 1, wherein the power generation information includes an instantaneous power generation amount of the power conditioner or an instantaneous power generation rate of the power conditioner.
[Appendix 3]
The control information includes a plurality of types of control information having relatively different priorities,
The first communication means transmits the acquired power generation information to the grid server when switching from the control information having a relatively high priority to the power generation control based on the control information having a relatively low priority; The power generation control device according to Appendix 2, characterized by:
[Appendix 4]
The power generation control device according to appendix 1 or 2, wherein the power generation information includes power generation amount restriction information that is designated by a user and that allows the restriction of the power generation amount.
[Appendix 5]
The power generation control device according to appendix 2 or 4, wherein the power generation information further includes a power generation amount fluctuation rate of the power conditioner, an integrated power generation amount of the power conditioner, and weather information.
[Appendix 6]
The power generation control device according to any one of appendices 1 to 5, wherein the second communication unit acquires the power generation information when receiving the control information from the system server to the power conditioner.
[Appendix 7]
The control information is a target suppressed power generation amount or a target suppressed power generation rate of the power conditioner,
The power generation amount restriction information is a target suppressed power generation amount or a target suppressed power generation rate of the power conditioner,
The first communication means uses the acquired power generation information when the target suppressed power generation amount or the target suppressed power generation rate of the control information is less than the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount restriction information. The power generation control device according to any one of appendices 4 to 6, wherein the power generation control device transmits to a server.
[Appendix 8]
The control information is a target suppressed power generation amount or a target suppressed power generation rate of the power conditioner,
The power generation amount restriction information is a target suppressed power generation amount or a target suppressed power generation rate of the power conditioner,
When the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount limitation information is less than the target suppressed power generation amount or the target suppressed power generation rate of the control information, the second communication unit is configured to determine whether the power generation amount limitation information is the control. The power generation control device according to any one of appendices 4 to 6, wherein an instruction to perform notification is output to a notification unit that notifies that the information is less than information.
[Appendix 9]
The control information is a target power generation amount or a target power generation rate of the power conditioner,
The power generation amount restriction information is a target power generation amount or a target power generation rate of the power conditioner,
The first communication means uses the acquired power generation information when the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount restriction information is less than the target suppressed power generation amount or the target suppressed power generation rate of the control information. The power generation control device according to any one of appendices 4 to 6, wherein the power generation control device transmits to a server.
[Appendix 10]
The control information is a target power generation amount or a target power generation rate of the power conditioner,
The power generation amount restriction information is a target power generation amount or a target power generation rate of the power conditioner,
When the target suppression power generation amount or target suppression power generation rate of the control information is less than the target suppression power generation amount or target suppression power generation rate of the power generation amount restriction information, the control information is less than the power generation amount limitation information for the user. The power generation control device according to any one of appendices 4 to 6, further comprising notification means for notifying that the above is true.
[Appendix 11]
Communication means for acquiring control information for suppressing power generation from a system server that generates control information for controlling power generation;
The power generation amount control means for controlling the power generation amount based on the suppression information acquired by the communication means;
Input receiving means for receiving an input of power generation amount restriction information, which is information that allows a user to limit the amount of power generation,
The power conditioner, wherein the communication unit transmits the power generation control information acquired by the input receiving unit to the system server.
[Appendix 12]
Furthermore, when the target suppressed power generation amount or the target suppressed power generation rate of the control information is less than the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount restriction information, the target suppressed power generation amount of the control information is given to the user. Alternatively, the power conditioner according to appendix 11, further comprising notification means for notifying that the target suppression power generation rate is less than the target suppression power generation amount or the target suppression power generation rate of the power generation amount restriction information.
[Appendix 13]
A system server that generates control information for controlling the amount of power generation;
A power conditioner that controls the amount of power generation,
A power generation control device that transmits and receives information to and from the system server and the power conditioner,
The power generation control device
First communication means for obtaining control information for suppressing power output from the system server by the power conditioner;
A second communication means for transmitting the control information to the inverter when receiving the control information;
The first communication means transmits power generation information related to the power generation amount of the acquired power conditioner to the system server.
A power generation control system characterized by that.
[Appendix 14]
The power generation control system according to supplementary note 13, comprising a plurality of the power conditioners.
[Appendix 15]
15. The power generation control system according to appendix 13 or 14, wherein the power generation information includes power generation amount restriction information that is specified by a user and allows the restriction of the power generation amount.
[Appendix 16]
The control information is a target suppressed power generation amount or a target suppressed power generation rate of the power conditioner,
The power generation amount restriction information is a target suppressed power generation amount or a target suppressed power generation rate of the power conditioner,
When the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount restriction information is less than the target suppressed power generation amount or the target suppressed power generation rate of the control information, the power generation amount restriction information is less than the control information for the user. The power generation control system according to supplementary note 15, further comprising notification means for notifying that
[Appendix 17]
The control information is a target power generation amount or a target power generation rate of the power conditioner,
The power generation amount restriction information is a target power generation amount or a target power generation rate of the power conditioner,
When the target suppression power generation amount or target suppression power generation rate of the control information is less than the target suppression power generation amount or target suppression power generation rate of the power generation amount restriction information, the control information is less than the power generation amount limitation information for the user. The power generation control system according to supplementary note 15, further comprising notification means for notifying that
[Appendix 18]
The inverter has a display unit,
18. The power generation control system according to appendix 16 or 17, wherein the notification unit displays information notifying that the control information is less than the power generation amount restriction information on the display unit.
[Appendix 19]
Obtain control information for suppressing power output from the power conditioner from the system server that generates control information for controlling the power generation amount,
Sending the control information to the inverter;
Receiving power generation information related to the power generation amount of the power conditioner from the power conditioner;
Transmitting the power generation information to the grid server;
A power generation control method characterized by the above.
[Appendix 20]
Communication means for transmitting control information for suppressing power output from the power conditioner to the power conditioner;
Calculating means for calculating feedback control information based on the control information and the received allowable limit value;
The communication server transmits the acquired feedback control information to the power conditioner.
[Appendix 21]
A system server that generates control information for controlling the amount of power generation;
A power conditioner for controlling the amount of power generation,
The inverter is
Communication means for obtaining control information for suppressing power output from the system server by the power conditioner,
The communication means transmits power generation information related to the power generation amount of the acquired power conditioner to the system server.
A power generation control system characterized by that.
[Appendix 22]
The power generation control system according to appendix 21, wherein a plurality of the power conditioners are provided.
[Appendix 23]
23. The power generation control system according to appendix 21 or 22, wherein the power generation information includes power generation amount restriction information that is specified by a user and allows the restriction of the power generation amount.
[Appendix 24]
A power conditioner that controls the amount of power generation,
A power generation control device that transmits and receives information to and from the system server and the power conditioner,
The power generation control device
First communication means for obtaining control information for suppressing power output from the system server by the power conditioner;
A second communication means for transmitting the control information to the inverter when receiving the control information;
Acquisition means for acquiring power generation information including power generation amount restriction information that is specified by the user from the power conditioner and that allows the restriction of the power generation amount;
When the target controlled power generation amount or the target suppressed power generation rate of the system is less than the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount restriction information, the control information is less than the power generation amount restriction information for the user. A power generation control system comprising notification means for notifying that there is. [Appendix 25]
A power conditioner for controlling the amount of power generation according to predetermined control information;
Disposed between a host monitoring device comprising: means for acquiring power generation information including information on the amount of power generated received from the power conditioner; and generation means for generating control information to be given to the power conditioner,
A power generation control device comprising means for relaying the control information and the power generation information.
[Appendix 26]
The power generation control device according to any one of appendices 1 to 10, wherein the second communication unit communicates with a plurality of the power conditioners.

1000, 1100, 1200, 1300, 1400, 2000, 2100, 2200, power generation control system 100, 110 power generation control device 101 first communication unit 102 second communication unit 113, 334-1 to 334-n information transmission determination unit 114, 335-1 to 335-n storage unit 200 host monitoring device (system server)
201 Upper-level communication unit 300, 300-1 to 300-n, 310, 310-1 to 310-n, 320-1 to 320-n, 330-1 to 330-n PCS
301, 301-1 to 301-n PCS communication unit 302, 302-1 to 302-n Power generation control unit 313, 313-1 to 313-n Input reception unit 325-1 to 325-n Storage unit 324-1 to 324 -N display section

Claims (17)

First communication means for acquiring control information for suppressing the power generation amount of the inverter;
A second communication means for transmitting the control information to the inverter when the control information is received;
The second communication means acquires power generation information related to the power generation amount of the power conditioner from the power conditioner,
The first communication means transmits the acquired power generation information to the system server.   The power generation control device according to claim 1, wherein the second communication unit communicates with the plurality of power conditioners.   The power generation control device according to claim 1, wherein the power generation information includes an instantaneous power generation amount of the power conditioner or an instantaneous power generation rate of the power conditioner. The control information includes a plurality of types of control information having relatively different priorities,
When the received control information is switched from control information having a relatively high priority to control information having a relatively low priority, the first communication unit transmits the acquired power generation information to the system server. The power generation control device according to claim 3.   5. The power generation control device according to claim 1, wherein the power generation information includes power generation amount restriction information that is information that allows a restriction on a power generation amount.   The power generation control device according to claim 3, wherein the power generation information further includes a power generation amount fluctuation rate of the power conditioner, an integrated power generation amount of the power conditioner, and weather information. .   The power generation control device according to claim 1, wherein the second communication unit acquires the power generation information when receiving the control information from the system server to the power conditioner. The control information is a target suppressed power generation amount or a target suppressed power generation rate of the power conditioner,
The power generation amount restriction information is a target suppressed power generation amount or a target suppressed power generation rate of the power conditioner,
The first communication means uses the acquired power generation information when the target suppressed power generation amount or the target suppressed power generation rate of the control information is less than the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount restriction information. The power generation control device according to claim 5, wherein the power generation control device is transmitted to a server. The control information is a target suppressed power generation amount or a target suppressed power generation rate of the power conditioner,
The power generation amount restriction information is a target suppressed power generation amount or a target suppressed power generation rate of the power conditioner,
When the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount limitation information is less than the target suppressed power generation amount or the target suppressed power generation rate of the control information, the second communication unit is configured to determine whether the power generation amount limitation information is the control. The power generation control device according to claim 5, wherein an instruction to perform notification is output to a notification unit that notifies that the information is less than information. The control information is a target power generation amount or a target power generation rate of the power conditioner,
The power generation amount restriction information is a target power generation amount or a target power generation rate of the power conditioner,
The first communication means uses the acquired power generation information when the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount restriction information is less than the target suppressed power generation amount or the target suppressed power generation rate of the control information. The power generation control device according to claim 5, wherein the power generation control device is transmitted to a server. The control information is a target power generation amount or a target power generation rate of the power conditioner,
The power generation amount restriction information is a target power generation amount or a target power generation rate of the power conditioner,
When the target suppressed power generation amount or the target suppressed power generation rate of the control information is less than the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount restriction information, notification that the control information is less than the power generation amount restriction information The power generation control device according to claim 5, further comprising a notification unit that performs the notification. A system server that generates control information for controlling the amount of power generation;
A power conditioner that controls the amount of power generation,
A power generation control device that transmits and receives information to and from the system server and the power conditioner,
The power generation control device
First communication means for obtaining the control information from the system server;
A second communication means for transmitting the control information to the inverter when the control information is received;
The second communication means acquires power generation information related to the power generation amount of the power conditioner from the power conditioner,
The power generation control system, wherein the first communication unit transmits the acquired power generation information to the system server. Get control information to reduce the amount of power generated by the inverter,
Sending the control information to the inverter;
Receiving power generation information related to the power generation amount of the power conditioner from the power conditioner;
Transmitting the power generation information to the grid server;
A power generation control method characterized by the above. Communication means for transmitting control information for suppressing power output from the power conditioner to the power conditioner;
Calculating means for calculating feedback control information based on the control information and the received allowable limit value;
The communication server transmits the acquired feedback control information to the power conditioner. Communication means for acquiring control information for suppressing power generation from a system server that generates control information for controlling power generation;
The power generation amount control means for controlling the power generation amount based on the suppression information acquired by the communication means;
Input receiving means for receiving input of power generation amount restriction information, which is information allowing the restriction of power generation amount,
The power conditioner, wherein the communication unit transmits the power generation control information acquired by the input receiving unit to the system server. A system server that generates control information for controlling the amount of power generation;
A power conditioner for controlling the amount of power generation,
The inverter is
Communication means for obtaining control information for suppressing power output from the system server by the power conditioner,
The communication means transmits power generation information related to the power generation amount of the acquired power conditioner to the system server.
A power generation control system characterized by that. A power conditioner that controls the amount of power generation,
A power generation control device that transmits and receives information to and from the system server and the power conditioner,
The power generation control device
First communication means for obtaining control information for suppressing power output from the system server by the power conditioner;
A second communication means for transmitting the control information to the inverter when receiving the control information;
Acquisition means for acquiring power generation information including power generation amount restriction information that is specified by the user from the power conditioner and that allows the restriction of the power generation amount;
When the target suppressed power generation amount or the target suppressed power generation rate of the control information is less than the target suppressed power generation amount or the target suppressed power generation rate of the power generation amount restriction information, notification that the control information is less than the power generation amount restriction information A power generation control system comprising an informing means for performing the operation.

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