JP6119877B2 - Control device, power generation control method, and control program - Google Patents

Description

[Description of related applications]
The present invention is based on a Japanese patent application: Japanese Patent Application No. 2014-167035 (filed on August 20, 2014), and the entire content of the application is incorporated and described in this document 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 PCS is installed on the assumption that a general business operator or a consumer generates power spontaneously. Therefore, it is conceivable that the power generated by self-generation (spontaneous power generation) is consumed at the business establishment or the home of the customer. However, the suppression control of Patent Document 1 does not take into account the power (power consumption) consumed at the business establishment of the business or the house of the customer, so that the spontaneous power generation, the power consumption, and the surplus power are not grasped. For this reason, there is a possibility that the generated power is suppressed and controlled even when the surplus power is small. Therefore, the subject that spontaneously generated electric power is suppressed excessively arises. 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 control device, a power generation control method, and a program that contribute to solving such problems.

  A control device according to an aspect of the present invention is a surplus power acquisition unit that acquires surplus power that is a difference between power output from a power conditioner and power consumed in a facility where the power conditioner is installed. First control information acquisition means for acquiring first control information for controlling power output by the power conditioner, and output by the power conditioner based on the surplus power and the first control information. Second control information generating means for generating second control information for suppressing the generated power, and communication means for transmitting the second control information generated by the information generating means to the power conditioner. Prepare.

  According to the control device, the power generation control method, and the program according to the present invention, it is possible to appropriately suppress and control the PCS without excessively suppressing the generated power.

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 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 flowchart which illustrates control of the control apparatus in 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 control 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 sequence diagram which shows an example of the acquisition process of the suppression control rate by the control apparatus applicable to 1st-6th embodiment. It is a sequence diagram which shows another example of the acquisition process of the suppression control rate by the control apparatus applicable to 1st-6th embodiment. It is a figure which shows the structural example of the high-order monitoring apparatus in 1st-6th embodiment. It is a figure which shows another structural example of the high-order monitoring apparatus in 1st-6th embodiment. It is a figure which shows the example of a connection of a high-order monitoring apparatus and a control apparatus. It is a figure which shows the structural example of the control apparatus of the 1st-6th embodiment of this invention.

<First Embodiment>
(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 host monitoring device 20, and a solar power generation facility 30.

  The control device 110 includes a first control information acquisition unit 11, a surplus power acquisition unit 12, a second control information generation unit 13, and a communication unit 14.

  The first control information acquisition unit 11 acquires a suppression control rate as first control information output from the higher-level monitoring device 20 described later, and outputs the suppression control rate to the second control information generation unit 13. Here, the suppression control rate as the first control information is a power generation rate [%] with respect to a power generation amount that can be generated by the PCS 31 described later. In the present embodiment, the suppression control rate is used as the first control information, but the first control information is the suppression rate [%] with respect to the power generation amount that can be generated by the PCS 31, and the suppression power value [W that is suppressed by the PCS 31] ] Or power generation amount [W] to be generated by the PCS 31.

  The surplus power acquisition unit 12 acquires the instantaneous power generation amount [W] generated by the PCS 31 from the PCS 31 via the communication unit 14, and the power consumption consumed in the solar power generation facility 30 from the power meter 32 described later [ W] is acquired. Further, the surplus power acquisition unit 12 calculates surplus power from the difference between the acquired instantaneous power generation amount and the power consumption, and outputs the calculated surplus power to the second control information generation unit 13. Here, the surplus power acquisition unit 12 calculates the surplus power, but the PCS 31 may calculate the surplus power, and the surplus power acquisition unit 12 may directly acquire the surplus power calculated by the PCS 31. .

  The second control information generation unit 13 determines whether the PCS 31 is based on the input suppression control rate, the PCS instantaneous power generation amount that is the real-time power generation amount of the PCS 31, the maximum power generation amount and the power consumption of the solar power generation facility. A PCS power generation rate for suppressing power generation to be performed is calculated as second control information. The second control information generation unit 13 outputs the calculated PCS power generation rate to the communication unit 14 as second control information. The PCS power generation rate is an upper limit value of the amount of power generated by the PCS 31. That is, when the actual power generation rate of the PCS 31 is lower than the PCS power generation rate described above, the power generation rate of the PCS 31 is operated at the actual power generation rate, and the actual power generation rate of the PCS 31 is the PCS power generation rate described above. If it is higher, the power generation rate of the PCS 31 is reduced to the PCS power generation rate (treated as an upper limit value). Note that the PCS power generation rate can be defined as a percentage value of the power factor of the PCS 31 with respect to the active power that is the output of the solar power generation facility. In the present embodiment, the second control information generation unit 13 calculates the PCS power generation rate, but the second control information generation unit 13 may be configured to calculate the target power generation amount and suppression rate generated by the PCS. good.

  The communication unit 14 outputs the second control information input from the second control information generation unit 13 to the PCS. Specifically, the communication unit 14 is a communication interface with respect to the PCS 31, and converts the second control information into a communication message conforming to the PCS 31. 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. In addition, the communication unit 14 may communicate with the PCS 31 wirelessly. 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, various methods such as an optical cable and a mobile phone laid by the power company are assumed. The

  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 a suppression control rate as first 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 photovoltaic power generation facility 30 includes a PCS 31 and a power meter 32. The power meter 32 is provided in the solar power generation facility 30 and acquires the power consumed by the solar power generation facility 30.

  The PCS 31 is operated by electric power generated by a solar cell under management, and converts the electric power generated in the solar cell from direct current to alternating current. In the present embodiment, it is assumed that the PCS 31 does not always have a power source, and does not include a nonvolatile storage device that holds information when power supply is stopped. Note that the PCS 31 may always have a power supply (for example, receive power supply from a commercial power supply) and have a memory function. Part of the electric power generated by the PCS 31 can be consumed by the solar power generation facility 30.

  The power meter 32 is configured to be provided in the solar power generation facility 30. The power meter 32 may be attached anywhere as long as the power consumed by the photovoltaic power generation facility 30 is acquired, or may be provided integrally with the control device 110.

(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 S <b> 10, the first control information acquisition unit 11 acquires the suppression control rate from the host monitoring device 20. The surplus power acquisition unit 12 acquires the power consumption consumed by the solar power generation facility 30 from the power meter 32 and the PCS instantaneous power generation amount generated by the PCS 31 via the communication unit 14. 11 and 12 are sequence diagrams illustrating an example of acquisition processing of the suppression control rate by the control device 110. FIG. In the example of FIG. 11, the host monitoring device 20 transmits the suppression control rate at a predetermined timing (S10-1 to S10-2), and the control device 110 receives this and acquires the suppression control rate (S10). -3). In the example of FIG. 12, the control device 110 obtains the suppression control rate by requesting the host monitoring device 20 to transmit the suppression control rate at a predetermined timing (S10-11 to S10-12). (S10-13). The acquisition of the suppression control rate by the control device 110 can take any of the above forms.

  In step S20, the surplus power acquisition unit 12 acquires surplus power from the difference between the PCS instantaneous power generation amount and the power consumption.

In step S30, the second control information generation unit 13 acquires the maximum power generation amount that can be generated when the PCS 31 does not perform the suppression control, and calculates the suppression control power generation amount from the product of the maximum power generation amount and the suppression control rate. get. A PCS power generation rate as second control information for controlling the PCS 31 is calculated from the acquired suppression control power generation amount, surplus power, and equation (1).

  In step S40, the communication unit 14 transmits the PCS power generation rate calculated by the second control information generation unit 13 to the PCS 31, and ends the flow.

(Function and effect)
Since the above control calculates the PCS power generation rate based on the surplus power, even if there is a discrepancy between the surplus power and the PCS power generation amount, the PCS power generation amount is not limited excessively. Therefore, it is possible to properly control the amount of power generation. The reason is that the suppression control rate instructed based on the maximum power generation amount or the like of the solar power generation facility is converted to the surplus power based PCS power generation rate by the above formula (1). In addition, this embodiment is applied suitably for the power generation equipment whose surplus power is larger than the suppression control power generation amount. If the suppression control power generation amount often exceeds the surplus power, the seventh embodiment can be applied.

<Second Embodiment>
(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 plurality of solar power generation facilities 30-1 to 30-m.

  The control device 210 includes a first control information acquisition unit 11, a surplus power acquisition unit 12, a second control information generation unit 13, a plurality of communication units 14-1 to 14-m, a non-volatile memory 15, A communication data processing unit 16.

  Since the first control information acquisition unit 11, the surplus power acquisition unit 12, and the second control information generation unit 13 have been described in the first embodiment, description thereof will be omitted.

  The plurality of communication units 14-1 to 14-m are connected to the corresponding solar power generation facilities 30-1 to 30-m. One communication unit may be provided for each of the plurality of photovoltaic power generation facilities 30, or the communication units 14-1 to 14-m may be provided for each predetermined group of the plurality of solar power generation facilities 30. Also good.

  The nonvolatile memory 15 includes the suppression control rate acquired by the first control information acquisition unit 11 from the host monitoring device 20 and the PCS 31 acquired via the communication unit 14 for each of the photovoltaic power generation facilities 30-1 to 30-m. The instantaneous power generation amount, the power consumption acquired by the surplus power acquisition unit 12 from the power meter 32, and the like are stored.

  The communication data processing unit 16 performs data processing such as framing and header processing included in the communication processing when performing suppression control on the PCS 31.

(Control flow)
FIG. 4 is a flowchart illustrating the control of the control device 110 according to the second embodiment. A control flow of the control device 110 according to the second embodiment will be described with reference to FIG. Since step S10 to step S40 have been described in FIG. 2, description thereof will be omitted.

  In step S40, the communication unit 14-n transmits the PCS power generation rate to the PCS 31 of the solar power generation facility 30-n (1 ≦ n ≦ m). In step 50, the second control information generation unit 13 determines whether n = m. If n ≠ m, the process returns to step S10 and the same applies to the PCS 31 of the solar power generation facility 30-n + 1. Execute the process. If n = m, the second control information generation unit 13 determines that the PCS power generation rate has been transmitted to all the PCSs 31 and ends the flow. In the present embodiment, the PCS power generation amount is transmitted to the PCS 31 in order from 30-1; however, the PCS power generation amount may be transmitted to the PCS 31 in the order in which surplus power can be acquired.

(Function and effect)
As described above, the present invention can also be applied to a configuration in which a plurality of photovoltaic power generation facilities 30-1 to 30-m are connected to the control device 210. Of course, also in this embodiment, since the control calculates the PCS power generation rate based on the surplus power, the control control power generation amount instructed from the host monitoring device side and the actually required suppression control power generation amount are calculated. Even when there is a divergence, it is possible to appropriately control the power generation amount for the plurality of PCSs without excessively limiting the power generation amounts for the plurality of PCSs.

<Third Embodiment>
(Constitution)
About the structure of the electric power generation control system 100 which concerns on 3rd Embodiment, since it is the same as that of 1st Embodiment, description is abbreviate | omitted (refer FIG. 1).

(Control flow)
FIG. 5 is a flowchart illustrating the control of the control device 110 according to the third embodiment. The control flow of the control device 110 according to the third embodiment will be described with reference to FIG. Since step S10 to step S40 have been described in FIG. 2, description thereof will be omitted.

  After the surplus power is calculated in step S20, the process proceeds to step S60. In step S60, the surplus power acquisition unit 12 determines whether the surplus power is greater than zero. When surplus power is larger than 0, it progresses to step S30 and the surplus power acquisition part 12 calculates a PCS power generation rate based on the suppression control power generation amount and surplus power. If the surplus power is 0 or less, the process proceeds to step S70. In the example of FIG. 5, the threshold value is set to 0. However, the threshold value is not particularly limited to 0 and may be 0 or more. For example, a value that is sufficiently smaller than the total amount of power generated by the power plant may be set as the threshold value.

  In step S70, the second control information generating unit calculates the PCS power generation rate as the second control information as 1 (100%). Then, it progresses to step S40 and the communication part 14 sets a PCS power generation rate to 1 (100%), and transmits to PCS. In this embodiment, the PCS power generation rate is set to 1 (100%), but the PCS power generation rate is set to a sufficiently small fixed value (a value greater than 0) when the surplus power is 0 or less than when the surplus power is greater than 0. You may do it. In addition, although the PCS power generation rate is transmitted as 1 (100%) in step S40, it may be configured not to transmit the PCS control rate.

  Note that the same control can be performed even in the configuration of the second embodiment (FIG. 3).

(Function and effect)
When the surplus power is 0 or less, the generated power is exchanged in the facility, so there is no need to suppress the amount of power generated by the PCS. Therefore, it is not necessary to calculate the PCS power generation rate. Therefore, when the surplus power is 0 or less, the calculation load can be reduced compared with the first embodiment by omitting the calculation of the PCS power generation rate.

<Fourth Embodiment>
(Constitution)
About the structure of the electric power generation control system 100 which concerns on 4th Embodiment, since it is the same as that of 1st Embodiment, description is abbreviate | omitted (refer FIG. 1).

(Control flow)
FIG. 6 is a flowchart illustrating the control of the control device 110 according to the fourth embodiment. The control flow of the control device 110 according to the fourth embodiment will be described with reference to FIG. Since step S10 to step S40 have been described in FIG. 2, description thereof will be omitted.

  In step S30, the second control information generation unit 13 calculates the PCS power generation rate for controlling the PCS 31, and then proceeds to step S80. In step S <b> 80, the second control information generation unit 13 acquires the number of calculations necessary for the averaging calculation in order to average the PCS power generation rate that controls the PCS 31. In the present embodiment, the number of calculations is set, but the averaging process may be performed by setting a predetermined period and a predetermined time.

  In step S90, the second control information generation unit 13, for example, reaches the number of calculations of the PCS power generation rate calculated in step S30, which is periodically acquired every minute, in step S80. Determine whether or not. If the number of times of calculation of the PCS power generation rate calculated for step S30 has not reached the number of times of calculation acquired in step S80, the process proceeds to step S100. If the number of times of calculation calculated has been reached, the process proceeds to step S110. move on. Here, although the cycle is 1 minute, it may be a cycle of 30 seconds or 2 minutes.

  In step S100, the second control information generation unit 13 counts up the number of times calculated in step S30. After counting up, it progresses to step S10 and is repeated until the frequency | count calculated in step S30 in step S90 reaches the frequency | count of calculation acquired by step S80.

  In step S110, the second control information generation unit 13 calculates the average PCS power generation rate by integrating the PCS power generation rate calculated in step S30 and dividing the value by the number of calculations. Then, it progresses to step S40 and transmits the calculated average PCS power generation rate from the communication part 14 to PCS.

  Note that the same control can be performed even in the configuration of the second embodiment (FIG. 3).

(Function and effect)
In the case where the suppression control rate and the power consumption change in a relatively short time, the calculation of the PCS power generation rate is frequently performed, and the power generation amount of the PCS may become unstable. By performing the conversion process, the PCS stability can be improved by reducing the control opportunities for the PCS.

<Fifth Embodiment>
(Constitution)
About the structure of the electric power generation control system 100 which concerns on 5th Embodiment, since it is the same as that of 1st Embodiment, description is abbreviate | omitted (refer FIG. 1). Note that the same control can be performed even in the configuration of the second embodiment (FIG. 3).

(Control flow)
FIG. 7 is a flowchart illustrating the control of the control device 110 according to the fifth embodiment. A control flow of the control device 110 according to the fifth embodiment will be described with reference to FIG. In addition, since step S10 to step S40 in FIG. 2 and step S60 and step 70 in FIG. 5 have been described, description thereof will be omitted.

  After acquiring the suppression control rate, power consumption, and PCS instantaneous power generation in step S10, the process proceeds to step S120.

  In step S <b> 120, the surplus power acquisition unit 12 acquires the number of acquisitions necessary for the PCS instantaneous power generation averaging operation in order to average the PCS instantaneous power generation acquired from the PCS 31. In the present embodiment, the number of acquisitions is used, but the averaging process may be performed by setting a predetermined period and a predetermined time.

  In step S130, the surplus power acquisition unit 12 determines whether or not the number of acquisitions of the PCS instantaneous power generation amount acquired in, for example, a cycle of 1 minute in step S10 has reached the number of acquisitions acquired in step S120, If the acquired number of calculations has not been reached, the process proceeds to step S140. If the acquired number of calculations has been reached, the process proceeds to step S150. Here, although the cycle is 1 minute, it may be a cycle of 30 seconds or 2 minutes.

  In step S140, the surplus power acquisition unit 12 counts up the number of times acquired in step S10. After counting up, it progresses to step S10 and is repeated until the frequency | count acquired by step S10 in step S130 reaches the acquisition frequency acquired by step S120.

  In step S150, the surplus power acquisition unit 12 calculates the PCS average power generation amount by integrating the PCS instantaneous power generation amount acquired in step S10 and dividing the value by the number of acquisitions. Thereafter, the process proceeds to step S160.

  In step S160, the surplus power acquisition unit 12 calculates surplus power based on the PCS average power generation amount and the power consumption acquired by the power meter 32, as in step S20, and proceeds to S50.

(Function and effect)
In the fourth embodiment, the PCS power generation rate is calculated every time, but in this embodiment, the number of times of calculating the PCS power generation rate is reduced by calculating the PCS average power generation amount using the PCS instantaneous power generation amount. Can do. For this reason, it is possible to reduce the calculation load compared to the fourth embodiment.

<Sixth Embodiment>
(Constitution)
FIG. 8 is a block diagram illustrating the configuration of a power generation control system 300 according to the sixth embodiment. The sixth embodiment will be described with reference to FIG. In the present embodiment, an embodiment for controlling the PCS provided in the solar power generation device is disclosed. Referring to FIG. 8, the power generation control system 300 includes a control device 310, a host monitoring device 20, and a solar power generation facility 30. Although only one solar power generation facility 30 is written, a configuration in which a plurality of solar power generation facilities are controlled as in the second embodiment may be adopted.

  The control device 310 includes a first control information acquisition unit 11, a surplus power acquisition unit 12, a communication unit 14, and a transmission determination unit 17. The communication unit 14 is disclosed as a single example, but may be configured to include a plurality of communication units 14 as in the second embodiment.

  Since the first control information acquisition unit 11, the surplus power acquisition unit 12, and the communication unit 14 have been described in the first embodiment, description thereof will be omitted.

  The transmission determination unit 17 determines whether or not to transmit the first control information acquired by the first control information acquisition unit 11 to the PCS 31 via the communication unit 14. Note that, as in the second embodiment, a nonvolatile memory, a communication data processing unit, and the like may be provided.

(Control flow)
FIG. 9 is a flowchart illustrating the control of the control device 310 according to the sixth embodiment. The control flow of the control device 310 according to the sixth embodiment will be described with reference to FIG.

  In step S <b> 210, the first control information acquisition unit 11 acquires the suppression control rate as the first control information from the host monitoring device 20. The surplus power acquisition unit 12 acquires the power consumption consumed by the solar power generation facility 30 from the power meter 32 and the PCS instantaneous power generation amount generated by the PCS 31 via the communication unit 14.

  In step S220, the surplus power acquisition unit 12 acquires surplus power from the difference between the PCS instantaneous power generation amount and the power consumption.

  In step S230, the transmission determination unit 17 determines whether the surplus power is greater than zero. When surplus power is larger than 0, it progresses to step S240, and when surplus power is 0 or less, a flow is complete | finished. Although the threshold is set to 0, it is not particularly limited to 0, and even if it is greater than or equal to 0, the surplus power is sufficiently small, and a value that is sufficiently small compared to the total amount of power generated by the power plant. It may be set as a threshold value.

  In step S240, the communication unit 14 transmits the suppression control rate acquired by the first control information acquisition unit 11 to the PCS 31, and ends the flow.

(effect)
When the surplus power is 0 or less, the generated power is exchanged in the facility, so there is no need to suppress the amount of power generated by the PCS. Therefore, by performing the above control, when the surplus power is 0 or less, the second control information is not transmitted to the PCS. Therefore, the power generation amount with respect to the PCS without excessively limiting the power generation amount of the PCS. It is possible to appropriately implement the suppression control.

  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.

<Seventh Embodiment>
(Constitution)
FIG. 10 is a block diagram illustrating a configuration of a power generation control system 300a according to the seventh embodiment suitable for a case where the suppression control power generation amount often exceeds surplus power. The seventh embodiment will be described with reference to FIG. In the present embodiment, an embodiment for controlling the PCS provided in the solar power generation device is disclosed. Referring to FIG. 10, the power generation control system 300a includes a control device 410, a host monitoring device 20, and a solar power generation facility 30. Although only one solar power generation facility 30 is written, a configuration in which a plurality of solar power generation facilities are controlled as in the second embodiment may be adopted.

  The control device 410 includes a first control information acquisition unit 11, a power consumption acquisition unit 12 a, a second control information generation unit 13, and a communication unit 14.

  Since the first control information acquisition unit 11 and the communication unit 14 have been described in the first embodiment, descriptions thereof are omitted.

  The power consumption acquisition unit 12a acquires the power consumption [W] consumed in the solar power generation facility 30 from the power meter 32. The surplus power acquisition unit 12 transmits the acquired power consumption [W] to the second control information generation unit 13.

The second control information generation unit 13 determines whether the PCS 31 is based on the input suppression control rate, the PCS instantaneous power generation amount that is the real-time power generation amount of the PCS 31, the maximum power generation amount and the power consumption of the solar power generation facility. A PCS power generation rate for suppressing power generation to be performed is calculated as second control information. The second control information generation unit 13 outputs the calculated PCS power generation rate to the communication unit 14 as second control information. The PCS power generation rate in this embodiment is calculated by the following equation (2).

  Since the basic control flow is the same as that of the first embodiment, description thereof is omitted. According to the above formula (2), an appropriate PCS power generation rate can be calculated even in a case where the suppression control power generation amount exceeds the surplus power.

  For example, consider a case where the upper monitoring apparatus 20 instructs a suppression control rate of 80% for a solar power generation facility having a maximum power generation amount of 50 kW without considering power consumption in the solar power generation facility. In this case, the suppression control power generation amount intended by the host monitoring device 20 is 10 kW. On the other hand, when the power consumption acquired from the power meter 32 is 5 kW, the PCS power generation rate is calculated as (1− (10−5) / 50) = 90% by the equation (2). In this case, for the suppression control rate of 80% from the host monitoring device 20, the control device 410 performs 90% suppression control in consideration of power consumption. As a result, the PCS 31 outputs 50 kW × 90% = 45 kW, but the power consumption is 5 kW. As a result, the output power from the solar power generation facility is reduced to 40 kW. As a result, the power generation amount suppression control (10 kW suppression) intended by the host monitoring device 20 is achieved.

  For example, consider a case where the host monitoring apparatus 20 instructs a 5% suppression control rate for a photovoltaic power generation facility having a maximum power generation amount of 50 kW without considering power consumption in the photovoltaic power generation facility. In this case, the suppression control power generation amount intended by the host monitoring device 20 is 45 kW. On the other hand, when the power consumption acquired from the power meter 32 is 10 kW, the PCS power generation rate is calculated as (1− (45−10) / 50) = 30% by the equation (2). In this case, with respect to the 5% suppression control rate from the host monitoring device 20, the control device 410 performs 30% suppression control in consideration of power consumption. As a result, the PCS 31 outputs 50 kW × 30% = 15 kW, but the power consumption is 10 kW. As a result, the output power from the solar power generation facility is 5 kW subtracted. As a result, the power generation amount suppression control (45 kW suppression) intended by the host monitoring device 20 is achieved.

  Moreover, the above-described upper monitoring apparatus 20 can also take various forms. For example, as shown in FIG. 13, the host monitoring device 20 sets the suppression control rate based on the connection information of the photovoltaic power generation facility 30 received from the power system 500 and the output instruction that instructs the power system to output power amount. This can be realized by a configuration including a calculating unit 203 for calculating and a transmitting unit 204 for transmitting the calculated suppression control rate to the control device 410. Here, the connection information is information indicating which distribution path in the distribution network the photovoltaic power generation facility 30 is connected to, that is, the photovoltaic power generation facility 30 that outputs electric power to the power grid 500, and distribution automation. It is created from a system called a system. Moreover, you may acquire the correspondence of the control apparatus 410 and a power distribution path as the said connection information.

  Further, the output instruction is a power generation amount control instruction for the host monitoring apparatus 20 transmitted from the power system 500. Specifically, the output instruction may be a suppressed power generation amount, a suppressed power generation rate, a target power generation amount, a target power generation rate, a stop signal, or the like of a group of the photovoltaic power generation facilities 30 to be managed by the host monitoring device 20 . In addition to the power distribution route, the group divides the power generation devices into specific areas (areas such as Tokyo and Minato-ku) or specific groups (a group of power generation devices whose total power generation amount is 500 kw or less). It may be a thing.

  Upon receiving the connection information and the output instruction from the power system 500 side, the host monitoring device 20 calculates a suppression control rate based on these and transmits the suppression control rate to the control device 410 that the device itself has jurisdiction over. For example, the connection information that the photovoltaic power generation facility 30 is connected from the power system 500 to the distribution network A to be managed by the own device, and the power generation amount of the distribution path A is XX kW · h. When receiving the output instruction, the host monitoring device 20 transmits a suppression control rate that changes the output power generation amount of the photovoltaic power generation facility 30 to ΔΔkW · h based on these. .

  As shown in FIG. 14, the host monitoring device 20 includes a first acquisition unit 201 that acquires connection information of the photovoltaic power generation facility 30 from the power system 500 and a second acquisition that acquires an output instruction from the power system 500. It can also be set as the structure provided with the means 202. FIG. In this case, both or one of the first acquisition unit 201 and the second acquisition unit 202 is configured as another device that receives connection information or / and an output instruction from the power system 500 side and transmits the connection information to the higher-level monitoring device 20. You can also. Further, as shown in FIG. 14, the first acquisition unit 201 and the second acquisition unit 202 may be independent as functions, and need not be independent as devices. For example, it may be realized as a message receiver that can acquire the two pieces of information from the power system 500 side using a predetermined protocol.

  Further, as shown in FIG. 15, a configuration in which a plurality of control devices 410 a to 410 c are connected to one higher-level monitoring device 20 can be employed. Moreover, the control apparatus 410a-410c of FIG. 15 is connectable with the some solar power generation facility 30 like 2nd Embodiment, and the structure which transmits a PCS power generation rate with respect to each is also employable.

  Note that the functions of the control devices 110, 210, 310, and 410 shown in FIGS. 1, 3, 8, and 10 are provided in the hardware (CPU 2320, The storage device 2340, the communication device 2310, etc.) can be used to implement the computer program that executes the processes of the first to seventh embodiments. In FIG. 16, the control device 110/210/310/410 may be connected to the upper monitoring device 20 via a communication network such as a mobile communication network or the Internet using a communication device 2310. In addition, as a communication protocol between the control device 110/210/310/410 and the host monitoring device 20, a general-purpose protocol such as a mission critical network protocol (PMCN) can be used, and the control device 110/210 / 310/410 may be connected to the Ethernet (the PCS 31 and the power meter 32 via the input device 2311 and the output device 2312, but, like the host monitoring device 20, a communication network such as a mobile communication network or the Internet. It may be connected via.

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]
Surplus power acquisition means for acquiring surplus power that is the difference between the power output by the power conditioner and the power consumed by the facility where the power conditioner is installed;
First control information acquisition means for acquiring first control information;
Based on the surplus power and the control information, second control information generating means for generating second control information for suppressing power output from the power conditioner;
Communication means for transmitting the second control information generated by the second control information generating means to the power conditioner,
A control device characterized by that.
[Appendix 2]
The second control information is either a suppression amount or a suppression rate,
When the acquired surplus power is equal to or less than a predetermined value, either the suppression amount or the suppression rate included in the second control information generated by the second control information generation unit is set to zero.
2. The control device according to appendix 1, wherein
[Appendix 3]
The second control information is a target power generation amount or a target power generation rate of the power conditioner,
When the obtained surplus power is equal to or less than a predetermined value, the target power generation amount or the target power generation rate included in the second control information generated by the second control information generation unit is set to a maximum value.
2. The control device according to appendix 1, wherein
[Appendix 4]
The communication means does not transmit the second control information to the power conditioner when the acquired surplus power is a predetermined value or less.
2. The control device according to appendix 1, wherein
[Appendix 5]
The second control information generating means includes
A suppression control power generation amount that further acquires a maximum power generation amount that can be generated when the power conditioner does not perform the suppression control, and calculates the suppression control power generation amount based on the maximum power generation amount and the first control information. A calculation means;
Based on the surplus control power generation amount, the power conditioner calculates an electric power generation rate or an electric power generation amount as an upper limit value capable of generating power as second control information;
The control device according to any one of appendices 1 to 4, characterized by comprising:
[Appendix 6]
A second control information averaging means for averaging a plurality of the second control information acquired in a predetermined period;
The communication means transmits the averaged second control information to the power conditioner.
The control device according to any one of appendices 1 to 5, characterized in that:
[Appendix 7]
A surplus power averaging means for averaging the surplus power acquired a plurality of times in a predetermined period;
The control device according to any one of appendices 1 to 6, wherein the second control information generation unit generates the second control information based on the averaged surplus power.
[Appendix 8]
Obtain surplus power that is the difference between the power output by the power conditioner and the power consumed by the facility where the power conditioner is installed,
Obtaining first control information for controlling the power output by the power conditioner;
According to the surplus power, the second control information is generated,
The power generation control method, wherein the first control information generated by the information generation means is transmitted to the power conditioner.
[Appendix 9]
A process of obtaining surplus power that is the difference between the power output by the power conditioner and the power consumed by the facility where the power conditioner is installed;
Processing for obtaining first control information for controlling the power output by the power conditioner;
A process of generating the second control information according to the surplus power;
A power generation control program for causing a computer to execute a process of transmitting the second control information generated by the information generation means to the power conditioner.
[Appendix 10]
Surplus power acquisition means for acquiring surplus power that is the difference between the power output by the power conditioner and the power consumed by the facility where the power conditioner is installed;
First control information acquisition means for acquiring first control information for controlling electric power output by the power conditioner;
Communication means for transmitting the first control information to the inverter,
The said communication means does not transmit said 1st control information to the said power conditioner, when the acquired surplus electric power is below a predetermined value, The control apparatus characterized by the above-mentioned.
[Appendix 11]
Obtain surplus power that is the difference between the power output by the power conditioner and the power consumed by the facility where the power conditioner is installed,
Obtaining first control information for controlling the power output by the power conditioner;
Sending the first control information to the inverter;
The power generation control device method, wherein the communication means does not transmit the first control information to the power conditioner when the acquired surplus power is equal to or less than a predetermined value.
[Appendix 12]
A process of obtaining surplus power that is the difference between the power output by the power conditioner and the power consumed by the facility where the power conditioner is installed;
Processing for obtaining first control information for controlling the power output by the power conditioner;
A process for transmitting the first control information to the inverter;
A power generation control program for causing a computer to execute a process of not transmitting the first control information to the power conditioner by the communication unit when the acquired surplus power is equal to or less than a predetermined value.

100, 200, 300, 300a Power generation control system 110, 210, 310, 410, 410a to 410c Control device 11 First control information acquisition unit 12 Surplus power acquisition unit 12a Power consumption acquisition unit 13 Second control information generation unit 14 , 14-1 to 14-m Communication unit 15 Non-volatile memory 16 Communication data processing unit 17 Transmission determination unit 20 Host monitoring device 30, 30-1 to 30-m, 30a-31c Solar power generation facility 31 PCS
32 Power meter 201 First acquisition unit 202 Second acquisition unit 203 Calculation unit 204 Transmission unit 2310 Communication device 2311 Input device 2312 Output device 2320 CPU
2340 storage device

Claims (14)

Surplus power acquisition means for acquiring surplus power that is the difference between the power output by the power conditioner and the power consumed in the facility where the power output by the power conditioner is used;
A first control information acquiring means for acquiring first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on said surplus power to the first control information, wherein a power conditioner shown to information rate you reduce the power output by the power conditioner is the first control information and the same type Second control information generating means for generating second control information which is information decipherable by :
Communication means for transmitting the second control information generated by the second control information generating means to the power conditioner,
The communication means does not transmit the second control information to the power conditioner when the surplus power is a predetermined value or less.
A control device characterized by that. Obtain surplus power that is the difference between the power output by the power conditioner and the power consumed by the facility where the power output by the power conditioner is used;
Get the first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on said surplus power to the first control information, wherein a power conditioner shown to information rate you reduce the power output by the power conditioner is the first control information and the same type To generate second control information that can be deciphered with
Sending the generated second control information to the inverter;
When the surplus power is a predetermined value or less, the second control information is not transmitted to the power conditioner.
A power generation control method characterized by the above. Surplus power acquisition means for acquiring surplus power that is the difference between the power output by the power conditioner and the power consumed in the facility where the power output by the power conditioner is used;
A first control information acquiring means for acquiring first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on said surplus power to the first control information, wherein a power conditioner shown to information rate you reduce the power output by the power conditioner is the first control information and the same type Second control information generating means for generating second control information which is information decipherable by :
Communication means for transmitting the second control information generated by the second control information generating means to the power conditioner,
The second control information generation unit generates the second control information so that when the surplus power is not generated, the surplus power is not generated by the power that is suppressed and output by the second control information. To
A control device characterized by that. Obtain surplus power that is the difference between the power output by the power conditioner and the power consumed by the facility where the power output by the power conditioner is used;
Get the first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on said surplus power to the first control information, wherein a power conditioner shown to information rate you reduce the power output by the power conditioner is the first control information and the same type To generate second control information that can be deciphered with
A front Symbol power generation control method that sends a second control information to the power conditioner,
When the surplus power does not occur, the power generation control method generates the second control information so that surplus power is not generated by the power that is suppressed by the second control information and output. Power consumption acquisition means for acquiring power consumption that is power consumed in a facility where the power output by the power conditioner is used;
A first control information acquiring means for acquiring first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on the power consumption and the first control information, the power conditioner outputs power that is larger than the power that is suppressed and output by the first control information. a second control information generating means for generating a second control information indicating to that rate suppressing power that,
Communication means for transmitting the second control information generated by the second control information generating means to the power conditioner ,
The control apparatus according to claim 2, wherein the second control information is information that can be decoded by the power conditioner in the same manner as the first control information . The second control information generating means is configured so that a power larger than the power output by being suppressed by the first control information is output by the power conditioner, and by the power output by being suppressed. as the surplus electric power is not generated, to produce a pre-Symbol second control information,
The control device according to claim 5. Obtain the power consumption that is the power consumed in the facility where the power output by the inverter is used,
Get the first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on the power consumption and the first control information, the power conditioner outputs power that is larger than the power that is suppressed and output by the first control information. a indicates to information rate you reduce power, to generate the second control information the power conditioner is information that can be decrypted in the same manner as the first control information,
Transmitting a pre-Symbol second control information to the power conditioner,
A power generation control method characterized by the above. As the first high power than the power output is suppressed by the control information is outputted by the power conditioner, and as the surplus electric power is not generated by the power output is the suppression, pre Symbol Generating second control information;
The power generation control method according to claim 7. Surplus power acquisition means for acquiring surplus power that is the difference between the power output by the power conditioner and the power consumed in the facility where the power output by the power conditioner is used;
A first control information acquiring means for acquiring first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on the surplus power and the first control information, the power conditioner outputs power that is larger than the power that is suppressed and output by the first control information. a indicates to information rate you reduce power, the second control for generating the second control information the power conditioner is information that can be decrypted in the same manner as the first control information Information generating means;
Communication means for transmitting the second control information generated by the second control information generating means to the power conditioner,
A power generation control device characterized by that. Obtain surplus power that is the difference between the power output by the power conditioner and the power consumed by the facility where the power output by the power conditioner is used;
Get the first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on the surplus power and the first control information, the power conditioner outputs power that is larger than the power that is suppressed and output by the first control information. a indicates to information rate you reduce power, to generate the second control information the power conditioner is information that can be decrypted in the same manner as the first control information,
Transmitting a pre-Symbol second control information to the power conditioner,
A power generation control method characterized by the above. A power obtaining unit that obtains the power consumption of power output by the power conditioner is consumed in the facilities that are used,
A first control information acquiring means for acquiring first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on the power consumption and the first control information, second control information generating means for generating an upper limit power generation rate that suppresses the power output by the power conditioner;
Communication means for transmitting the upper power generation rate to the power conditioner that changes the output based on the upper power generation rate and the actual power generation rate of the power conditioner;
Equipped with a,
The upper limit power ratio controller wherein the power conditioner is characterized information der Rukoto that can be decrypted in the same manner as the first control information. Get the power consumption power output by the power conditioner is consumed in the facilities that are used,
Get the first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on the above and the power consumption first control information is information to suppress the electric power output by the power conditioner, that the power conditioner is decoded in the same manner as the first control information Generate an upper power generation rate that is information that can be
Transmitting the upper power generation rate to the power conditioner that changes output based on the upper power generation rate and the actual power generation rate of the power conditioner;
A power generation control method characterized by the above. Surplus power acquisition means for acquiring surplus power that is the difference between the power output by the power conditioner and the power consumed in the facility where the power output by the power conditioner is used;
A first control information acquiring means for acquiring first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on the said excess power and the first control information is information to suppress the electric power output by the power conditioner, that the power conditioner is decoded in the same manner as the first control information Second control information generating means for generating an upper limit power generation rate that is information capable of
Communication means for transmitting the upper power generation rate to the power conditioner that changes the output based on the upper power generation rate and the actual power generation rate of the power conditioner;
A control device comprising: Obtain surplus power that is the difference between the power output by the power conditioner and the power consumed by the facility where the power output by the power conditioner is used;
Get the first control information indicating a rate that to suppress the electric power output by the power conditioner,
Based on the surplus power and the first control information, it is information for suppressing the power output from the power conditioner, and the power conditioner decodes in the same manner as the first control information. Generate an upper power generation rate that is information that can be
Transmitting the upper power generation rate to the power conditioner that changes output based on the upper power generation rate and the actual power generation rate of the power conditioner;
A power generation control method characterized by the above.

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