JP2017169320A - Controller of solar power generator, server, solar power generation system, information distribution method, control method and program of solar power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a controller of a power generator capable of controlling the output while reducing the load for setting of the solar power generator, a server and a solar power generation system.SOLUTION: A server 20 used for maintenance management of a solar power generator 10 includes a memory 21 and a controller 22. The controller creates a piece of setting information relevant to the output control for restricting the AC output from the solar power generator while associating with identification information of the solar power generator, and stores the created setting information in the memory. The controller reads out a piece of setting information corresponding to the solar power generator from the memory and transmits the same to a controller (electric power monitor 11) that controls the solar power generator.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a control device for a solar power generation device, a server that transmits and receives data to and from the control device, and a solar power generation system that includes the control device and the server.

  Photovoltaic power generation, wind power generation, and the like are attracting attention as power generation methods that can suppress carbon dioxide emissions by using natural energy. In addition, with the implementation of a system in which electric power companies purchase the generated power, the spread of solar power generation to general households and industrial facilities is progressing.

  However, since power generation using natural energy depends on the weather, the amount of power generation does not always match demand. For example, in a season in which strong solar radiation continues for a long time, it is possible that the power generated by solar power generation is reversely flowed simultaneously from a plurality of solar power generation devices to the power system. If so, there is concern that the power system will become unstable.

  Therefore, the electric power company can set the upper limit value of the output of AC power (AC output) generated by the power conditioner for each of the plurality of photovoltaic power generation devices so that the power system can be prevented from becoming unstable. You are trying to perform output control that is specified along with the date and time. As a result of the output control, it is possible to limit the power that can flow backward from the photovoltaic power generation apparatus to the power system. Information that specifies the upper limit value of the AC output of the inverter together with the date and time is called an output control schedule. The output control schedule is created based on the predicted power generation amount for each photovoltaic power generation device and the power demand forecast, and is distributed from the server managed by the power company to the photovoltaic power generation device via the communication network, or communication is not possible. The solar power generation apparatus is supplied manually. The photovoltaic power generator controls the AC output according to the output control schedule.

  Patent Document 1 listed below acquires and stores information related to power control from an external server and performs power control based on the stored information. If communication with the external server is abnormal, the standard operation is performed in advance. A power management system that performs set power control is disclosed.

JP 2013-74631 A (published April 22, 2013)

  However, the conventional technology as described above has a problem in that when a photovoltaic power generation device is set so that the photovoltaic power generation device can support output control, a burden is placed on a maintenance manager of the photovoltaic power generation device.

  Because it is difficult or difficult for the user of the photovoltaic power generation device to set the photovoltaic power generation device corresponding to the output control, the maintenance manager of the photovoltaic power generation device determines the installation location of the photovoltaic power generation device. This is because it is necessary to ask and do. Since there are many photovoltaic power generation devices to be subjected to maintenance management, the burden on the maintenance manager, that is, the cost, increases cumulatively with the number of photovoltaic power generation devices to be managed.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a control device, a server, and a solar power generation device that can reduce the burden on the setting of the solar power generation device that can execute output control. It is to realize a photovoltaic power generation system.

  In order to solve the above problems, a server according to one embodiment of the present invention is a server used for maintenance management of a solar power generation device, and includes a memory and a controller, and the controller includes the solar power generation. Setting information related to output control for limiting the AC output of the device is created in association with the identification information assigned to the solar power generation device, the created setting information is stored in the memory, and the solar power generation device It is provided, The setting information corresponding to the said solar power generation device is read from the said memory and transmitted with respect to the control apparatus which is provided and controls the said solar power generation device.

  Moreover, in order to solve said subject, the control apparatus which concerns on 1 aspect of this invention is a control apparatus with which a solar power generation device is provided, Comprising: Output control which restrict | limits the alternating current output of the said solar power generation device is concerned. The setting information is acquired from a server that generates setting information, and an instruction related to the output control is given to a power conditioner provided in the photovoltaic power generation apparatus based on the acquired setting information. To do.

  According to one aspect of the present invention, there is an effect that it is possible to reduce the burden on the setting of the photovoltaic power generator that enables output control.

It is a block diagram which shows each functional structure of an electric power monitor and a monitoring server in the solar energy power generation system in one Embodiment of this invention. It is a block diagram which shows the whole structure of the said photovoltaic power generation system. It is explanatory drawing which shows an example of the output control information containing an output control schedule. It is a flowchart which shows the procedure of the change process of the setting information which a monitoring server performs. It is a flowchart which shows the procedure of the change process of the setting information which an electric power monitor performs.

Embodiment 1
Hereinafter, embodiments of the present invention will be described in detail.

(Outline of solar power generation system configuration)
With reference to FIG. 2, the structure of the solar energy power generation system in one Embodiment of this invention is demonstrated. FIG. 2 is a block diagram showing the overall configuration of the photovoltaic power generation system in one embodiment of the present invention. As shown in FIG. 2, the solar power generation system 1 includes a solar power generation device 10, a monitoring server 20, a schedule server 30, the Internet 40, and a router 50.

  The solar power generation device 10 includes a power monitor 11 (control device), a power conditioner 12, and a solar panel 13 as an example. In the present embodiment, it is assumed that the solar power generation device 10 is installed for general household use. The power monitor 11 has a controller function for comprehensively controlling the operation of the photovoltaic power generation apparatus 10 and a user interface function. The user interface functions include, for example, the current state of generated power, the amount of power sold, the amount of power purchased, and the power consumption, the user sets a target value of power consumption, the usage status for the target value of power consumption, Or the function etc. which notify the user of the abnormality which generate | occur | produced in the solar power generation device 10 are included.

  The power conditioner 12 controls the operating voltage of the solar panel 13 so that the generated power of the solar panel 13 is always maximized, converts the DC power generated by the solar panel 13 into AC power, the household load 14 and the illustrated figure. Not to be supplied to power storage devices. In addition, the power conditioner 12 causes the power system 60 to reversely flow the surplus power remaining by subtracting the load power supplied to the household load 14 and the power storage device from the generated power.

  Note that the user of the solar power generation apparatus 10 can use the mobile terminal via the router 50 described later so that the user interface function of the power monitor 11 can be used using a dedicated mobile terminal or a general-purpose mobile terminal. Wireless connection to the solar power generation system 1 is also possible.

  The monitoring server 20 is a server owned or managed by a maintenance manager of the solar power generation device 10. The monitoring server 20 receives data on the power generation states of a large number of solar power generation devices including the solar power generation device 10 from each solar power generation device at regular intervals via the Internet 40 and the router 50, and The state of the power generation device is diagnosed, and the diagnosis result is transmitted to each solar power generation device. The state of each solar power generation device is compared with the past state of each solar power generation device, the expected state, or the state of other solar power generation devices installed in the vicinity of each solar power generation device. It is diagnosed whether the solar power generation device is kept in a normal state. If the diagnosis result indicates the occurrence of an abnormality, the maintenance manager should promptly dispatch a service person to the site of the target photovoltaic power generation device so as to respond to an error state that can be considered from the abnormality that has occurred. Can do.

  In addition, the monitoring server 20 receives, from the power monitor 11, data related to the current state such as generated power, sold power, purchased power, and consumed power, and data related to a target value of consumed power, and the power of each photovoltaic power generator. It can also be stored corresponding to the identification information (monitoring ID) assigned to the monitor. In this case, accumulation of data relating to the current state or the like may be omitted on the photovoltaic power generation apparatus 10 side. Furthermore, the monitoring server 20 can also update the power monitor 11 when the software of the power monitor 11 is updated.

  The schedule server 30 is a server owned or managed by an electric power company that supplies electric power to the electric power system 60 or an output control schedule distribution company. The output control schedule is information that defines the upper limit of the AC output of the solar power generation apparatus 10, that is, the power conditioner 12, for a specific time zone on a specific day, for example, as a percentage. The created output control schedule is distributed via the Internet 40 and the router 50 to the photovoltaic power generation apparatus to which the output control schedule is distributed. The power monitor 11 can go to the schedule server 30 to obtain an output control schedule using the power plant ID as identification information assigned to each solar power generation device. A specific example of the output control schedule will be described later.

(Output control schedule)
FIG. 3 is an explanatory diagram illustrating an example of output control information including an output control schedule. The output control information includes a power plant ID and output control pattern data. The power plant ID is identification information assigned to each solar power generation device so that a large number of solar power generation devices including the solar power generation device 10 can be identified. A specific example of the power plant ID will be described later. The output control pattern data is the data that indicates the upper limit of the AC output of the photovoltaic power generation device in a specific time zone on a specific date as a percentage, and different output control pattern data is prepared depending on the photovoltaic power generation device. Is done.

  For example, (a) to (c) of FIG. 3 show output control pattern data applied to one or more solar power generation devices specified by the power plant ID. In the output control pattern data shown in FIG. 3 (a), the upper limit of AC output is specified as 0% throughout the year in the year, month, and month. However, it is permissible to increase the AC output of the power conditioner 12 up to private power consumption. The solar power generation apparatus that has received the output control schedule including the output control pattern data executes control for self-consumption of generated power without performing power sales all day on the year, month, and day.

  In the output control pattern data shown in FIG. 3B, the upper limit of AC output is specified as 50% in the time zone from 12:00 to 15:00 on the same day. The solar power generation apparatus that has received the output control schedule including the output control pattern data executes control for setting the upper limit of the AC output of the power conditioner to 50% in the time zone from 12:00 to 15:00 on the same day. However, when the personal power consumption exceeds the AC output of the power conditioner 12 at the time of output control (output control value: 50%), it is allowed to increase the output of the power conditioner 12 to the personal power consumption. Further, when the private power consumption is lower than the AC output of the power conditioner 12 at the time of output control (output control value: 50%), it is possible to sell the generated surplus power. In addition, since the upper limit of AC output is specified as 100% outside the time zone from 12:00 to 15:00, the reverse power flow to the power system is not limited. That is, when surplus power is generated outside the time period from 12:00 to 15:00, surplus power can be sold.

  In the output control pattern data shown in FIG. 3C, it is specified that the AC output of the power conditioner is not limited all day. Therefore, the solar power generation apparatus that has received this output control schedule can execute control for selling surplus power when surplus power is generated all day.

  Needless to say, the output control pattern is not limited to the above three patterns, and more various patterns can be created, for example, in units of 30 minutes. In the case of a communicable solar power generation device, the output control schedule is distributed from the schedule server 30 to the solar power generation device on the day before or on the day before the output control is performed. Furthermore, it is also possible to cancel or update the notified output control schedule according to a sudden change in weather.

  In the case of a photovoltaic power generation device that cannot communicate with the schedule server 30, for example, a long-term output control schedule with 400 days as one cycle is created, and the maintenance manager of the photovoltaic power generation device sets the installation location of the photovoltaic power generation device. Therefore, a long-term output control schedule may be set in the photovoltaic power generation apparatus.

  The above long-term output control schedule may be referred to as a fixed schedule, and the output control schedule updated in a short span may be referred to as an update schedule. Since the update schedule has less output restrictions than the fixed schedule, the output control according to the update schedule has an economic advantage on the user side.

(Overview of setting information related to output control)
Output control for limiting the AC output of the photovoltaic power generation apparatus is performed for each photovoltaic power generation apparatus. Therefore, the upper limit value of the AC output of the photovoltaic power generation apparatus 10 is calculated by the photovoltaic power generation apparatus 10 based on the maximum generated power of the photovoltaic power generation apparatus 10 and the percentage presented in the output control schedule. The

  In order for the solar power generation device 10 to calculate the upper limit value, the solar power generation device 10 needs to have various types of information as setting information related to output control. As shown in FIG. 2, such setting information is created by the monitoring server 20 in association with the solar power generation device 10 and transmitted from the monitoring server 20 to the solar power generation device 10.

(Specific example of setting information)
A specific example of setting information related to output control is shown below.

  (A) Presence / absence of output control: Whether the photovoltaic power generation apparatus 10 is a target of output control. The presence / absence of output control varies depending on the time when the power conditioner 12 and the solar panel 13 are newly installed, when the power panel 12 is installed, when the power conditioner 12 is replaced, and the like.

  (B) Communication setting: Whether or not the power monitor 11 communicates with the schedule server 30 to acquire an output control schedule. Whether or not to manually write the output control schedule to the power monitor 11 when the communication setting is impossible.

  (C) Power plant ID: Although already explained, if the power plant ID is set incorrectly, the photovoltaic power generation apparatus 10 cannot acquire the correct output control schedule, leading to improper output control. The power plant ID is one of particularly important setting information.

  (D) Schedule server URL: URL (Uniform Resource Locator) of a server (for example, schedule server 30) that distributes the output control schedule. With the liberalization of the electric power business, it is considered that a plurality of electric power companies perform output control and a schedule server is installed for that purpose. A URL is assigned to each of the plurality of schedule servers. If the setting of the schedule server URL is wrong, the photovoltaic power generation apparatus 10 cannot receive the correct output control schedule to be transmitted to the photovoltaic power generation apparatus 10. If it does so, as a result of not performing appropriate output control, both an electric power provider and the user of the solar power generation device 10 may receive a disadvantage. The disadvantages experienced by the electric power company include defects that occur in the electric power system 60. For this reason, the schedule server URL is also one of particularly important setting information.

  (E) NTP server URL: URL of an NTP (Network Time Protocol) server that distributes standard time information for time adjustment in the photovoltaic power generation system 1. It can be considered that the schedule server changes which NTP server the schedule server cooperates with.

  (F) Output change time: The output control change time is specified in the output control implementation rules. The aim is to avoid sudden changes in the output by gently raising or lowering the output when the inverter performs output control. For example, a rule is defined such that the output is adjusted in increments of 1 minute over a change time of 5 to 10 minutes.

  (G) Power conditioner system capacity: Information necessary for calculating an output control value that the power monitor issues a command to the power conditioner. The capacity | capacitance (kW) of the solar panel 13 and the rated capacity | capacitance (kW) of the power conditioner 12 which the solar power generation device 10 is mounted.

(H) Surplus / total amount control: Distinguishing whether the surplus purchase system is applied or the full purchase system is applied. The unit price of electricity sales (yen / kW) varies depending on which system is applied.
The surplus purchase system targets a solar power generation device having a maximum generated power of, for example, less than 10 kW. The surplus purchase system guarantees that surplus power is sold when surplus power is generated by subtracting self-consumed power from generated power.
The total amount purchase system targets solar power generators having a maximum generated power of, for example, 10 kw or more. The total purchase system guarantees that all the generated power will be sold while the power consumed by the company is purchased from the power company.

  (I) The size of the equipment authorized capacity and the threshold value: The equipment authorized capacity (also referred to as contracted capacity) is the smaller of the rated capacity α of the power conditioner 12 and the capacity β of the solar panel 13. This corresponds to the maximum generated power. The threshold value is 10 kW, for example. As a result of new installation, expansion or replacement in the photovoltaic power generation apparatus 10, the method of making the output control the equipment authorized capacity increased with respect to the existing equipment authorized capacity is less than 10 kW. Applies to the case. On the other hand, in the case where the overall equipment authorized capacity is 10 kW or more, a method is adopted in which the overall equipment authorized capacity is subjected to output control without considering the existing equipment authorized capacity.

[Embodiment 2]
(Specific configuration of solar power generation system)
Next, the function of the photovoltaic power generation system 1 will be described more specifically with reference to FIG. FIG. 1 is a block diagram illustrating functional configurations of the power monitor 11 and the monitoring server 20 in the solar power generation system 1.

(Configuration of monitoring server)
The monitoring server 20 includes a memory 21, a controller 22, and a communication unit 23. The controller 22 includes a setting information creation unit 221, an output control instruction unit 222, and a power monitor data monitoring unit 223. The controller 22 has a function (A) for creating the setting information related to output control in association with the monitoring ID (identification information) assigned to the power monitor 11 and storing the created setting information in the memory 21. ing. This function (A) is performed by the setting information creation unit 221.

  Here, “creation of setting information” refers to the monitoring that is assigned to each power monitor by the maintenance manager of the photovoltaic power generation apparatus 10 that is given to the setting information creation unit 221 via the input unit. Corresponding to the ID, or from the power monitor 11 to which the monitoring ID is assigned, the setting information creation unit 221 automatically associates the information automatically acquired via the communication unit 23 and the power monitor data monitoring unit 223 with the monitoring ID. means.

  In addition, the controller 22 has a function (B) of reading the setting information corresponding to the solar power generation device 10 from the memory 21 and transmitting it to the power monitor 11. This function (B) is performed by the output control instruction unit 222.

  When the various setting information (a) to (i) is stored in the memory 15 of the power monitor 11, the various setting information (a) to (i) may be sent from the power monitor 11 to the monitoring server 20. Is possible. According to this aspect, for example, when the power monitor 11 communicates with a new monitoring server by changing the maintenance manager of the photovoltaic power generation apparatus 10 and making a contract with a new maintenance manager, the power monitor 11 The various setting information (a) to (i) can be rewritten or simplified.

  In addition, if the above-mentioned (g) power-con system capacity is also stored in the memory 15 of the power monitor 11, the monitoring server 20 requests the power monitor 11 to transmit information on the power-con system capacity, It can also be acquired. In the power monitor 11, an output control setting unit 161 (to be described later) communicates with the power conditioner 12 to automatically acquire the power conditioner system capacity and store it in the memory 15.

  The power monitor data monitoring unit 223 acquires information on power and information on error status from the power monitor 11 via the communication unit 23 and stores them in the memory 21 in association with the monitoring ID. The “information about power” acquired from the power monitor 11 includes the power generation amount of the solar power generation device 10, the power sales amount and the power purchase amount of the solar power generation device 10, the power consumption of the user of the solar power generation device 10 in the entire home, and the like. Information. The power monitor data monitoring unit 223 diagnoses the power generation state of the photovoltaic power generation apparatus 10 or the state of power consumption by the user based on the acquired “information about power”, and transmits the diagnosis result to the power monitor 11. You can also

(Configuration of power monitor)
The power monitor 11 includes a memory 15, a controller 16, a server communication unit 17, and a PCS communication unit 19. The controller 16 includes an output control setting unit 161, a power value / power amount recording unit 162, and an output control value calculation unit 163.

  The server communication unit 17 communicates with the communication unit 23, receives output control setting information, and sends it to the output control setting unit 161. The output control setting unit 161 stores the received setting information in the memory 15, and the corresponding data included in the received setting information is stored in various variables related to the setting information in the output control program stored in the memory 15. To be set.

  The server communication unit 17 communicates with the schedule server 30 to receive the output control schedule and send it to the output control setting unit 161. The output control setting unit 161 sends the received output control schedule to the output control value calculation unit 163.

  The output control value calculation unit 163 interprets the acquired output control schedule while referring to the time information distributed by the NTP server and acquired through the server communication unit 17, so that the time on the target day of the output control is passed. Accordingly, an upper limit value of power that can be output by the power conditioner 12 is obtained.

  For example, assuming that the rated capacity α of the power conditioner 12 is 5 kW and the capacity β of the solar panel 13 is 4 kW, in the acquired output control schedule, as shown in FIG. Assume that the output ratio is to be suppressed to 50%. For the calculation of determining the upper limit value of the power that can be output by the power conditioner 12, the smaller value of α and β is used, and the ratio of β / α is multiplied by the output ratio. As a result, the upper limit value of the power that the power conditioner 12 can output in the time zone from 12:00 to 15:00 is obtained as 5 kW × 50/100 × 40/50 = 2 kW. Thus, the upper limit value of the power obtained by the output control value calculation unit 163 is transmitted to the power conditioner 12 via the PCS communication unit 19.

  Alternatively, the output control value calculation unit 163 may be provided in the power conditioner 12. In this embodiment, the output ratio is transmitted from the output control setting unit 161 to the power conditioner 12 via the PCS communication unit 19, but the output ratio 50% acquired from the output control schedule is multiplied by the ratio β / α. 40% is transmitted to the inverter 12. The output control value calculation unit 163 provided in the power conditioner 12 can obtain the upper limit value 2 kW of the AC output by calculating 40% of the rated capacity 5 kW.

  Furthermore, if the power value generated by the solar panel 13 at 1 pm is 3 kW, this power value is output from the power conditioner 12 via the PCS communication unit 19 and the power value / power amount recording unit 162, and the output control value calculation unit 163. Sent to. If the private power consumption at this time is 1 kW, the upper limit value of the power that can be output by the power conditioner 12 is 2 kW as described above, and surplus power of 2 kW-1 kW = 1 kW is generated. Since this surplus power can be reversely flowed to the power system 60 and sold, the output control value calculation unit 163 sends a power sale instruction to the power conditioner 12. Further, since 3 kW−2 kW = 1 kW can be stored instead of being sold, the output control value calculation unit 163 sends a storage instruction to the power conditioner 12. In addition, when the private power consumption exceeds the upper limit value, the power conditioner 12 may output the power up to the private power consumption. Therefore, the output control value calculation unit 163 sends the power control value to the power conditioner 12. Send output instructions.

  Note that the power value power amount recording unit 162 acquires each power value at the current time and records it in the memory 15 for the generated power, the sold power, the purchased power, the power consumed by the household load 14, and the like. Each power amount integrated in units, days, months or years is recorded in the memory 15. Therefore, the output control value calculation unit 163 only needs to be able to acquire the generated power value at the current time from the power conditioner 12, so that the output of the PCS communication unit 19 does not pass through the power value / power amount recording unit 162, and the output control value It may be sent to the calculation unit 163.

[Embodiment 3]
(Setting information change processing-monitoring server)
Hereinafter, an example of a setting information changing process performed by the monitoring server 20 when the usage status of the photovoltaic power generation system 1 is changed due to the circumstances of the user will be described.

  FIG. 4 is a flowchart showing a procedure of setting information change processing performed by the monitoring server 20. As an example in which the usage status of the solar power generation system 1 is changed depending on the user's circumstances, a case where the user changes the power company is taken up.

  The user of the photovoltaic power generation apparatus 10 contacts the maintenance manager of the photovoltaic power generation apparatus 10 by telephone or the like for the change application of the electric power company, and the maintenance manager uses the input interface of the monitoring server 20 to update the setting information. Change processing may be performed. However, here, an example will be described in which the monitoring server 20 electronically accepts a change application for an electric power company.

  For example, the user of the solar power generation apparatus 10 logs in to the My Page provided in the monitoring server 20 using a personal computer or a mobile terminal, and selects the change of the power company displayed on the setting information change screen. To do. The controller 22 of the monitoring server 20 accepts the change application for the electric power company in response to the selection of the electric power company change (step 1; hereinafter abbreviated as S1). For example, the setting information creation unit 221 is responsible for the process of S1.

  Next, the controller 22 specifies a monitoring ID corresponding to the user ID acquired at the time of login authentication (S2). Since the user ID, the monitoring ID, and the setting information are recorded in the memory 21 in association with each other, the controller 22 sets the setting information (a) to (h) associated with the specified monitoring ID. Among them, the setting information that needs to be changed is rewritten and updated (S3). For example, the schedule server URL of the setting information (d) is changed with the change of the electric power company. In addition, the NTP server URL of the setting information (e) and the surplus / total amount control of the setting information (h) may be changed. The processing of S2 and S3 is also handled by the setting information creation unit 221, for example.

  The controller 22 transmits a flag indicating that setting information needs to be changed and the updated setting information to the power monitor 11 corresponding to the power plant ID (S4). The process of S4 is performed by the output control instruction unit 222 when, for example, the updated setting information is output from the setting information creation unit 221 to the output control instruction unit 222.

  Thereafter, the controller 22 receives the data indicating the power generation state or the error state and the various setting information (a) from the power monitor 11 through periodic communication from the power monitor 11 or communication performed as needed when the setting information is changed. To (i) are received (S5). And the controller 22 confirms the data received from the power monitor 11, and confirms whether it is updated by the correct setting (S6). For example, the power monitor data monitoring unit 223 takes charge of the processes of S5 and S6.

  When it is confirmed in S6 that the setting information has been updated correctly, the setting information updating process ends (S8). On the other hand, if it is confirmed in S6 that the setting information has not been updated correctly, the controller 22 outputs error information (S7), returns the process to S4, and re-executes the processes of S4 to S6. . When the number of repetitions of S4 to S6 reaches the threshold value, an error may be displayed on the display device of the monitoring server 20 and the process may be interrupted. The process of S7 is handled by, for example, the power monitor data monitoring unit 223.

(Setting information change processing-power monitor)
Next, setting information changing processing performed by the power monitor 11 will be described. FIG. 5 is a flowchart illustrating a procedure of setting information change processing performed by the power monitor 11.

  The controller 16 of the power monitor 11 receives a flag indicating that setting information needs to be changed and the updated setting information from the monitoring server 20 (S11). Subsequently, the controller 16 determines whether or not the power plant ID included in the updated setting information is correct (S12). A specific example of the determination process in S12 will be described later. If it is determined in S12 that the power plant ID is appropriate, in S13, the controller 16 determines whether the setting information other than the power plant ID is appropriate, for example, the setting information other than the power plant ID is a value within the input range. Determine whether or not. In S12 and S13, if it is determined that the power plant ID and other setting information are illegal, the received setting information may be discarded and a new process in S11 may be performed. The monitoring server 20 may be notified from the controller 16 that the location ID or other incorrect setting information has been detected.

  If it is determined in S12 and S13 that the power plant ID and other setting information are appropriate, the controller 16 changes the setting information stored in the memory 15 (S14). Thereafter, the controller 16 transmits data indicating a power generation state or an error state to the monitoring server 20 according to the changed setting information by periodic communication or communication performed whenever the setting information is changed (S15). The information update process is terminated.

  For example, the output control setting unit 161 is responsible for the processes of S11 to S15.

(Power plant ID suitability determination process)
The power plant ID appropriateness determination process executed in S12 will be specifically described. In S12, for example, the controller 16 determines whether the checksum of the power plant ID included in the setting information received by the power monitor 11 is correct. The checksum is a kind of error detection code, and indicates a check numerical value used for determination of coincidence or non-coincidence with a numerical value obtained by an operation using numerical values of each digit constituting a numerical sequence to be inspected. For the above operation, an operation in which numerical values of respective digits constituting the number sequence are simply added, or a combination of addition and multiplication or division is used. In addition, there are various ways of determining the checksum, such as a checksum that matches the calculation result itself, a checksum that matches the remainder of the division, and so on.

Here, as an example, it is assumed that the power plant ID of the photovoltaic power generation apparatus 10 is given by the following 26-digit number sequence, and the final 26-digit numerical value Y is a checksum.
Power plant ID: XX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXY
The checksum is, for example, the last digit of the solution obtained by the following calculation formula.
(1st digit x 1) + (2nd digit x 3) + (3rd digit x 5) + (4th digit x 7) + (5th digit x 9) +
(6th digit x 1) + (7th digit x 3) + (8th digit x 5) + (9th digit x 7) + (10th digit x 9) +
(11th digit x 1) + (12th digit x 3) + (13th digit x 5) + (14th digit x 7) + (15th digit x 9) +
(16th digit x 1) + (17th digit x 3) + (18th digit x 5) + (19th digit x 7) + (20th digit x 9) +
(21st digit x 1) + (22nd digit x 3) + (23rd digit x 5) + (24th digit x 7) + (25th digit x 9)
For example, it is assumed that the power plant ID is set to 10-9876-5432-1098-7654-3210-9875, and the numerical value 5 of the last digit is a checksum. In this case, the result of the above operation is
(1 x 1) + (0 x 3) + (9 x 5) + (8 x 7) + (7 x 9) +
(6 × 1) + (5 × 3) + (4 × 5) + (3 × 7) + (2 × 9) +
(1 x 1) + (0 x 3) + (9 x 5) + (8 x 7) + (7 x 9) +
(6 × 1) + (5 × 3) + (4 × 5) + (3 × 7) + (2 × 9) +
(1 × 1) + (0 × 3) + (9 × 5) + (8 × 7) + (7 × 9) = 655
Since it is 655, the last one digit “5” matches the checksum Y = 5, so that the power plant ID can be determined to be appropriate.

[Example of software implementation]
The output control setting unit 161, the power value / power amount recording unit 162 and the output control value calculation unit 163 included in the controller 16 of the power monitor 11, the setting information creation unit 221 included in the controller 22 of the monitoring server 20, and output control The instruction unit 222 and the power monitor data monitoring unit 223 may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or by software using a CPU (Central Processing Unit). May be.

  In the latter case, the power monitor 11 and the monitoring server 20 include a CPU that executes instructions of a program that is software for realizing each function, and a ROM (Read CPU) in which the program and various data are recorded so as to be readable by the computer (or CPU). Only Memory) or a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) for expanding the program, and the like. And the objective of this invention is achieved when a computer (or CPU) reads the said program from the said recording medium and runs it.

  As the recording medium, a “non-temporary tangible medium” such as a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. The program may be supplied to the computer via an arbitrary transmission medium (such as a communication network or a broadcast wave) that can transmit the program. The present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.

[Summary]
The server (monitoring server 20) which concerns on aspect 1 of this invention is a server used for the maintenance management of a solar power generation device (10), Comprising: A memory (21) and a controller (22) are provided, and the said controller ( 22) creates setting information related to output control for limiting the AC output of the solar power generation device (10) in association with identification information (power plant ID) assigned to the solar power generation device (10). The created setting information is stored in the memory (21), and the control device (power monitor 11) provided in the solar power generation device (10) and controlling the solar power generation device (10) is provided. Setting information corresponding to the solar power generation device (10) is read from the memory (21) and transmitted.

  According to the above configuration, in the photovoltaic power generation apparatus that is the object of maintenance management, setting information necessary for appropriately executing output control is remotely transmitted from the maintenance management server to the photovoltaic power generation apparatus control apparatus. Can be transmitted. In the solar power generation device, output control can be executed using the transmitted setting information. Thereby, it is not necessary to input setting information into a control apparatus manually using the input device installed in the solar power generation device, in other words, in the installation place of the solar power generation device. Therefore, the efficiency of maintenance management and cost reduction of the solar power generation apparatus are brought to both the maintenance manager and the user of the solar power generation apparatus. Furthermore, since the number of photovoltaic power generation devices to be managed is large, the above-mentioned merit increases as the number of photovoltaic power generation devices increases.

  In the server which concerns on aspect 2 of this invention, in the said aspect 1, the said setting information is the schedule server (30 which distributes the power plant ID as said identification information allocated to the said solar power generation device, and the said output control schedule. ) May be included.

  In the above configuration, a purchase system is implemented in which an electric power company that supplies electric power to the electric power system purchases electric power that flows backward from the photovoltaic power generation apparatus to the electric power system. Since the power plant ID is identification information for identifying the solar power generation device, if the power plant ID is set incorrectly, the power purchase is not properly performed, and the user of the solar power generation device may be disadvantaged. There is. For this reason, the power plant ID is one of important setting information.

  In addition, if the URL of the schedule server is set incorrectly, the control device cannot receive the correct output control schedule to be transmitted to the control device of the photovoltaic power generation device. If it does so, as a result of not performing appropriate output control, both an electric power provider and the user of a solar power generation device may receive a disadvantage. The disadvantages experienced by electric power companies include defects that occur in the electric power system. For this reason, the URL of the schedule server is also one of important setting information.

  According to said structure, the setting information important for both an electric power provider and the user of a solar power generation device can be reliably and rapidly delivered to many solar power generation devices via communication. .

  In the server according to aspect 3 of the present invention, in the aspect 1 or 2, the setting information includes (1) information on whether or not to perform the output control, and (2) a schedule server that distributes the schedule of the output control. Information on whether to communicate, (3) URL of time signal distribution server, (4) Information defining change time of output control, (5) Power generation capacity of solar power generation device, (6) Solar power generation It may include at least one of a rated capacity of a power conditioner provided in the apparatus, and (7) a method of selling electric power generated by the solar power generation apparatus.

  In the above configuration, the content of the output control performed by the solar power generation device includes the time when the solar power generation device is newly installed, the time when the solar power generation device is added, and the power conditioner provided in the solar power generation device. May change according to the time when the power source is replaced, the power generation capacity of the photovoltaic power generation device, the rated capacity of the power conditioner, or the like.

  According to said structure, although the detail of the information of (1)-(7) is mentioned later as embodiment, the setting information required and complicated for output control implemented by a solar power generation device is transmitted via communication. Can be delivered to a large number of photovoltaic power generation devices reliably and promptly. In addition, you may abbreviate | omit at least one part among the information of (1)-(7) by initial-setting to the control apparatus of a solar power generation device as fixed information without a change.

  The control device (power monitor 11) according to aspect 4 of the present invention is a control device provided in the solar power generation device (10), and is related to output control for limiting the AC output of the solar power generation device (10). While acquiring the said setting information from the server (monitoring server 20) which produces | generates setting information, based on the acquired said setting information with respect to the power conditioner (12) with which the said solar power generation device (10) is equipped, An instruction related to the output control is provided.

  According to said structure, since the setting information regarding the output control implemented in a solar power generation device is acquired from a server, in other words, via the input device installed in the solar power generation device, a solar power generation device It is not necessary to manually input setting information to the control device at the installation location. Therefore, the efficiency of maintenance management and cost reduction of the solar power generation apparatus are brought to both the maintenance manager and the user of the solar power generation apparatus.

  In addition, you may comprise the said control apparatus (electric power monitor 11) as follows. That is, it is a control device provided in the solar power generation device, and includes a memory (15) and a controller (16), and the controller (16) limits the AC output of the solar power generation device (10). The setting information is acquired from a server (monitoring server 20) that generates setting information related to output control, stored in the memory (15), and a power conditioner ( 12) is configured to give an instruction regarding the output control based on the setting information read from the memory (15). The effects of this configuration are as described above.

  In the control device according to aspect 5 of the present invention, in the above aspect 4, when the setting information updated by the server (monitoring server 20) is acquired from the server, it is included in the updated setting information. And the memory with which the detection program for the said control apparatus to detect whether the identification information (power station ID) allocated to the said solar power generation device was appropriate may be provided.

  In said structure, the user of a solar power generation device has the freedom to change an electric power provider with liberalization of an electric power business. Then, when the power company is changed, it may be necessary to change the setting information such as the URL of the schedule server that distributes the output control schedule. As described above, the URL of the schedule server is important information for output control, and the control device acquires illegal setting information or setting information in which the photovoltaic power generation device is incorrectly specified. Must be avoided.

  According to said structure, by performing the determination according to a detection program by the photovoltaic power generation device side, whether the acquired setting information is appropriate, whether the identification information of the photovoltaic power generation device contained in setting information is appropriate It can be determined by whether or not. Thereby, the risk that improper output control using improper setting information is implemented for the user of the photovoltaic power generation apparatus is reduced.

  A photovoltaic power generation system (1) according to aspect 6 of the present invention includes the server according to any one of aspects 1 to 3 and the control device according to aspect or 5.

  According to the above configuration, it is possible to construct a photovoltaic power generation system in which the maintenance management efficiency of the photovoltaic power generation apparatus and the merit of cost reduction are brought to both the maintenance manager and the user of the photovoltaic power generation apparatus. Moreover, in this solar power generation system, the merit demonstrated about each aspect can be enjoyed according to the combination of each aspect of a server, and each aspect of a control apparatus.

  An information distribution method according to aspect 7 of the present invention is an information distribution method executed by a server (monitoring server 20) used for maintenance management of the solar power generation device (10), and includes the solar power generation device (10). Setting information related to output control for limiting AC output is created in association with the solar power generation device (10), and is provided in the solar power generation device (10) to control the solar power generation device (10). The setting information created in association with the solar power generation device (10) is transmitted to the control device (power monitor 11).

  According to said method, the effect similar to the effect which the structure of the server which concerns on the said aspect 1 show | plays can be acquired.

  The control method of the solar power generation device (10) according to the aspect 8 of the present invention is described above from the server (monitoring server 20) that generates the setting information related to the output control that limits the AC output of the solar power generation device (10). Setting information is acquired and the instruction | indication regarding the said output control is given to the power conditioner (12) with which the said solar power generation device (10) is equipped based on the acquired said setting information.

  According to said method, the effect similar to the effect which the structure of the control apparatus which concerns on the said aspect 4 show | plays can be acquired.

  Moreover, the program for making a computer perform the information delivery method which concerns on the said aspect 7, the program for making a computer perform the control method of the solar power generation device which concerns on the said aspect 8, and the computer reading which recorded these programs, respectively Possible recording media can also be included in the scope of the present invention.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

DESCRIPTION OF SYMBOLS 1 Solar power generation system 10 Solar power generation device 11 Electric power monitor (control apparatus)
12 Power conditioner 15 Memory 16 Controller 20 Monitoring server (server)
21 Memory 22 Controller 30 Schedule server

Claims (10)

A server used for maintenance management of a solar power generation device,
Memory,
With a controller,
The controller creates setting information related to output control for limiting the AC output of the photovoltaic power generation apparatus in association with identification information assigned to the photovoltaic power generation apparatus, and stores the created setting information in the memory. With
A server that is provided in the solar power generation device and reads setting information corresponding to the solar power generation device from the memory and transmits the control information to the control device that controls the solar power generation device. The said setting information contains the URL of the schedule server which distributes the power plant ID as the said identification information allocated to the said photovoltaic power generation apparatus, and the said schedule of output control, The Claim 1 characterized by the above-mentioned. server. The setting information includes (1) information on whether or not to perform the output control, (2) information on whether or not to communicate with a schedule server that distributes the schedule of the output control, (3) URL of a time signal distribution server, (4) Information defining the change time of the output control, (5) Power generation capacity of the solar power generation device, (6) Rated capacity of a power conditioner provided in the solar power generation device, and (7) The above 3. The server according to claim 1, wherein the server includes at least one of types of sales of electric power generated by the solar power generation device. A control device provided in a solar power generation device,
While acquiring the setting information from a server that generates setting information related to output control that limits the AC output of the solar power generation device,
The control apparatus characterized by giving the instruction | indication regarding the said output control to the power conditioner with which the said solar power generation device is equipped based on the acquired said setting information. When the setting information updated by the server is acquired from the server, whether the identification information included in the updated setting information and assigned to the solar power generation device is appropriate is determined by the control device. The control device according to claim 4, further comprising a memory in which a detection program for detection by the computer is stored. A photovoltaic power generation system comprising the server according to any one of claims 1 to 3 and the control device according to claim 4 or 5. An information distribution method executed by a server used for maintenance management of a photovoltaic power generation device,
Setting information related to output control for limiting the AC output of the solar power generation device is created in association with the solar power generation device,
An information distribution method comprising transmitting the setting information created in association with the solar power generation device to a control device that is provided in the solar power generation device and controls the solar power generation device. From the server that generates the setting information related to the output control that limits the AC output of the solar power generation device, obtain the setting information,
A control method for a photovoltaic power generation apparatus, characterized in that an instruction relating to the output control is given to a power conditioner provided in the photovoltaic power generation apparatus based on the acquired setting information.   A program for causing a computer to execute the information distribution method according to claim 7.   The program for making a computer perform the control method of the solar power generation device of Claim 8.

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