WO2019187523A1 - Determination device, weather information processing device, determination method and weather information processing method - Google Patents

Abstract

This determination device (101) is provided with an acquisition unit (86) which acquires weather information about the installation location of a power generating unit which includes solar panels, and a determination unit (81) which, on the basis of the aforementioned weather information acquired by the acquisition unit (86), determines a standard to be used in determining abnormalities in the power generating unit, and uses the aforementioned determined standard to make an abnormality determination.

Description

Determination device, weather information processing device, determination method, and weather information processing method

The present invention relates to a determination device, a weather information processing device, a determination method, and a weather information processing method.
This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2018-59457 for which it applied on March 27, 2018, and takes in those the indications of all here.

JP 2012-205078 A (Patent Document 1) discloses a monitoring system for photovoltaic power generation as follows. That is, the photovoltaic power generation monitoring system is a photovoltaic power generation monitoring system that monitors the power generation status of the solar cell panel for a photovoltaic power generation system that aggregates outputs from a plurality of solar cell panels and sends them to a power converter. A measuring device for measuring the power generation amount of each solar cell panel provided in a place where the output electric circuits from the plurality of solar cell panels are aggregated, and connected to the measurement device, A lower communication device having a function of transmitting measurement data, an upper communication device having a function of receiving the measurement data transmitted from the lower communication device, and the solar cell panel via the upper communication device And a management device having a function of collecting the measurement data for each. The management device determines the presence or absence of abnormality based on the difference in power generation amount at the same time for each solar cell panel, or the maximum value or integration of the power generation amount for a predetermined period for each solar cell panel The presence or absence of abnormality is determined based on the value.

JP 2012-205078 A

(1) The determination device of the present disclosure includes an acquisition unit that acquires weather information at an installation location of a power generation unit including a solar battery panel, and an abnormality determination of the power generation unit based on the weather information acquired by the acquisition unit And a determination unit that determines the abnormality using the determined reference.

(5) The weather information processing apparatus according to the present disclosure is based on the measurement result acquisition unit that acquires the measurement result of the output of the power generation unit including the solar battery panel, and the measurement result acquired by the measurement result acquisition unit. And a creation unit that creates weather information at the installation location of the power generation unit.

(6) The determination method of the present disclosure is a determination method in the determination device, the step of acquiring weather information at the installation location of the power generation unit including the solar battery panel, and the power generation unit based on the acquired weather information Determining a criterion used for the abnormality determination, and performing the abnormality determination using the determined criterion.

(7) The weather information processing method of the present disclosure is a weather information processing method in a weather information processing apparatus, the step of acquiring a measurement result of an output of a power generation unit including a solar battery panel, and the acquired measurement result And generating weather information at the installation location of the power generation unit.

One aspect of the present disclosure can be realized not only as a determination apparatus including such a characteristic processing unit, but also as a program for causing a computer to execute such characteristic processing. Further, one embodiment of the present disclosure can be realized as a semiconductor integrated circuit that realizes part or all of the determination device, or can be realized as a determination system including the determination device.

Also, one aspect of the present disclosure can be realized not only as a weather information processing apparatus including such a characteristic processing unit, but also as a program for causing a computer to execute such characteristic processing. Further, one embodiment of the present disclosure can be realized as a semiconductor integrated circuit that realizes part or all of the weather information processing apparatus, or can be realized as a weather information processing system including the weather information processing apparatus.

FIG. 1 is a diagram showing a configuration of a photovoltaic power generation system according to an embodiment of the present invention. FIG. 2 is a diagram showing a configuration of the PCS unit according to the embodiment of the present invention. FIG. 3 is a diagram showing a configuration of the current collecting unit according to the embodiment of the present invention. FIG. 4 is a diagram showing a configuration of the solar cell unit according to the embodiment of the present invention. FIG. 5 is a diagram showing the configuration of the monitoring system according to the embodiment of the present invention. FIG. 6 is a diagram showing a configuration of a monitoring device in the monitoring system according to the embodiment of the present invention. FIG. 7 is a diagram showing a configuration of the determination device in the monitoring system according to the embodiment of the present invention. FIG. 8 is a diagram showing an example of monitoring information held by the determination apparatus in the monitoring system according to the embodiment of the present invention. FIG. 9 is a diagram showing an example of generated power data created by the creation unit in the determination apparatus according to the embodiment of the present invention. FIG. 10 is a diagram illustrating an example of the first differential data created by the creation unit in the determination apparatus according to the embodiment of the present invention. FIG. 11 is a diagram showing an example of the twice differential data created by the creation unit in the determination apparatus according to the embodiment of the present invention. FIG. 12 is a diagram showing another example of generated power data created by the creation unit in the determination apparatus according to the embodiment of the present invention. FIG. 13 is a diagram showing another example of the once differentiated data created by the creating unit in the determination apparatus according to the embodiment of the present invention. FIG. 14 is a diagram showing another example of the twice differentiated data created by the creating unit in the determination apparatus according to the embodiment of the present invention. FIG. 15 is a diagram showing another example of the generated power data and the twice differential data created by the creation unit in the determination apparatus according to the embodiment of the present invention. FIG. 16 is a diagram for explaining abnormality determination by the determination unit in the determination apparatus according to the embodiment of the present invention. FIG. 17 is a flowchart defining the operation procedure of the determination apparatus according to the embodiment of the present invention. FIG. 18 is a diagram showing a configuration of a weather information processing apparatus according to a modification of the embodiment of the present invention. FIG. 19 is a flowchart defining the operation procedure of the weather information processing apparatus according to the modification of the embodiment of the present invention.

In recent years, techniques for monitoring solar power generation systems and determining abnormalities have been developed.

[Problems to be solved by the present disclosure]
Since the amount of power generated by the power generation unit including the solar cell panel is affected by the weather, a technology that can grasp the weather at the installation location of the power generation unit and use it more effectively is desired.

This indication was made in order to solve the above-mentioned subject, and the purpose is a judgment device which can use the weather in the installation place of a power generation part containing a solar cell panel more effectively, a weather information processing device, It is to provide a determination method and a weather information processing method.

[Effects of the present disclosure]
According to this indication, the weather in the installation place of the power generation part containing a solar cell panel can be used more effectively.

[Description of Embodiment of Present Invention]
First, the contents of the embodiment of the present invention will be listed and described.

(1) The determination device according to the embodiment of the present invention is based on the acquisition unit that acquires weather information at the installation location of the power generation unit including the solar battery panel, and the weather information acquired by the acquisition unit. A determination unit configured to determine a reference used for abnormality determination of the power generation unit and perform the abnormality determination using the determined reference.

With such a configuration, it is possible to determine the abnormality of the power generation unit using the standard of the content according to the weather at the installation location of the power generation unit, so that the accuracy of the abnormality determination can be improved. Therefore, the weather at the place where the power generation unit including the solar battery panel is installed can be used more effectively.

(2) Preferably, the acquisition unit acquires a measurement result of the output of the power generation unit, and creates the weather information based on the acquired measurement result.

As described above, the weather information is generated based on the power generation results of the power generation unit, and more accurate weather information at the installation location of the power generation unit than in the case of acquiring weather information transmitted from an external server. Can be obtained.

(3) More preferably, the acquisition unit creates the weather information based on a result obtained by differentiating the measurement result twice.

With such a configuration, it can be easily confirmed whether or not the power generation unit stably outputs the generated power.

(4) Preferably, the determination unit classifies the plurality of power generation units into a plurality of groups based on the weather information, determines the reference for each group, and each of the power generation units belonging to the same group The abnormality determination is performed by comparing the measurement results of the outputs using the reference corresponding to the group.

As described above, with the configuration in which the abnormality determination is performed by comparing the power generation units having the same influence on the generated power due to the weather, the accuracy of the abnormality determination can be improved without performing a complicated calculation process.

(5) The weather information processing apparatus according to the embodiment of the present invention includes a measurement result acquisition unit that acquires a measurement result of an output of a power generation unit including a solar battery panel, and the measurement result acquired by the measurement result acquisition unit. And a creation unit that creates weather information at a place where the power generation unit is installed.

With such a configuration, for example, based on the measurement result of the output of the power generation unit, it is possible to create more accurate weather information by checking whether or not the power generation unit stably outputs the generated power Can do. For this reason, more accurate weather information can be transmitted to an external server or the like. Therefore, the weather at the place where the power generation unit including the solar battery panel is installed can be used more effectively.

(6) The determination method according to the embodiment of the present invention is a determination method in the determination device, and includes the step of acquiring weather information at the installation location of the power generation unit including the solar battery panel, and the acquired weather information. And determining a standard used for abnormality determination of the power generation unit, and performing the abnormality determination using the determined standard.

By such a method, the abnormality determination of the power generation unit can be performed using the standard of the content according to the weather at the installation location of the power generation unit, so that the accuracy of the abnormality determination can be improved. Therefore, the weather at the place where the power generation unit including the solar battery panel is installed can be used more effectively.

(7) A weather information processing method according to an embodiment of the present invention is a weather information processing method in a weather information processing apparatus, and acquires a measurement result of an output of a power generation unit including a solar battery panel, and Creating weather information at an installation location of the power generation unit based on the measurement result.

By such a method, for example, based on the measurement result of the output of the power generation unit, it is possible to create more accurate weather information by checking whether or not the power generation unit stably outputs the generated power Can do. For this reason, more accurate weather information can be transmitted to an external server or the like. Therefore, the weather at the place where the power generation unit including the solar battery panel is installed can be used more effectively.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated. Moreover, you may combine arbitrarily at least one part of embodiment described below.

<Configuration and basic operation>
[Configuration of solar power generation system]
FIG. 1 is a diagram showing a configuration of a photovoltaic power generation system according to an embodiment of the present invention.

Referring to FIG. 1, solar power generation system 401 includes four PCS (Power Conditioning Subsystem) units 80 and cubicle 6. The cubicle 6 includes a copper bar 73.

FIG. 1 representatively shows four PCS units 80, but a larger or smaller number of PCS units 80 may be provided.

FIG. 2 is a diagram showing a configuration of the PCS unit according to the embodiment of the present invention.

2, the PCS unit 80 includes four current collecting units 60 and a PCS (power conversion device) 8. The PCS 8 includes a copper bar 7 and a power conversion unit 9.

In FIG. 2, four current collecting units 60 are representatively shown, but a larger or smaller number of current collecting units 60 may be provided.

FIG. 3 is a diagram showing a configuration of the current collecting unit according to the embodiment of the present invention.

Referring to FIG. 3, the current collecting unit 60 includes four solar cell units 74 and a current collecting box 71. The current collection box 71 has a copper bar 72.

In FIG. 3, four solar cell units 74 are representatively shown, but a larger number or a smaller number of solar cell units 74 may be provided.

FIG. 4 is a diagram showing the configuration of the solar cell unit according to the embodiment of the present invention.

Referring to FIG. 4, solar cell unit 74 includes four power generation units 78 and a junction box 76. The power generation unit 78 has a solar cell panel. The connection box 76 has a copper bar 77.

FIG. 4 representatively shows four power generation units 78, but a larger or smaller number of power generation units 78 may be provided.

In this example, the power generation unit 78 is a string in which four solar cell panels 79A, 79B, 79C, and 79D are connected in series. Hereinafter, each of the solar cell panels 79A, 79B, 79C, and 79D is also referred to as a solar cell panel 79.

FIG. 4 representatively shows four solar cell panels 79, but a larger or smaller number of solar cell panels 79 may be provided.

In the solar power generation system 401, output lines and aggregated lines, that is, power lines from the plurality of power generation units 78 are electrically connected to the cubicles 6, respectively.

More specifically, the output line 1 of the power generation unit 78 has a first end connected to the power generation unit 78 and a second end connected to the copper bar 77. Each output line 1 is aggregated into an aggregation line 5 via a copper bar 77. The copper bar 77 is provided, for example, inside the connection box 76.

When the power generation unit 78 receives sunlight, the power generation unit 78 converts the received solar energy into DC power, and outputs the converted DC power to the output line 1.

3 and 4, aggregation line 5 has a first end connected to copper bar 77 and a second end connected to copper bar 72 in corresponding solar cell unit 74. Each aggregation line 5 is aggregated into the aggregation line 2 via the copper bar 72. The copper bar 72 is provided, for example, inside the current collection box 71.

With reference to FIGS. 1 to 4, in the photovoltaic power generation system 401, as described above, the output lines 1 from the plurality of power generation units 78 are aggregated into the aggregation line 5, and the aggregation lines 5 are aggregated into the aggregation line 2. Then, each aggregation line 2 is aggregated to the aggregation line 4, and each aggregation line 4 is electrically connected to the cubicle 6.

More specifically, each aggregation line 2 has a first end connected to the copper bar 72 in the corresponding current collecting unit 60 and a second end connected to the copper bar 7. In the PCS 8, the internal line 3 has a first end connected to the copper bar 7 and a second end connected to the power conversion unit 9.

In the PCS 8, the power conversion unit 9 uses, for example, the DC power generated in each power generation unit 78 via the output line 1, the copper bar 77, the aggregation line 5, the copper bar 72, the aggregation line 2, the copper bar 7 and the internal line 3. Is received, the received DC power is converted into AC power and output to the aggregation line 4.

The aggregation line 4 has a first end connected to the power conversion unit 9 and a second end connected to the copper bar 73.

In the cubicle 6, AC power output from the power conversion unit 9 in each PCS 8 to each aggregation line 4 is output to the system via the copper bar 73.

[Configuration of Monitoring System 301]
FIG. 5 is a diagram showing the configuration of the monitoring system according to the embodiment of the present invention.

Referring to FIG. 5, the solar power generation system 401 includes a monitoring system 301. The monitoring system 301 includes a determination device 101, a plurality of monitoring devices 111, and a collection device 151.

FIG. 5 representatively shows four monitoring devices 111 provided corresponding to one current collecting unit 60, but a larger or smaller number of monitoring devices 111 may be provided. In addition, the monitoring system 301 includes one collection device 151, but may include a plurality of collection devices 151.

In the monitoring system 301, sensor information in the monitoring device 111 which is a slave is transmitted to the collection device 151 regularly or irregularly.

The monitoring device 111 is provided in the current collecting unit 60, for example. More specifically, four monitoring devices 111 are provided corresponding to the four solar cell units 74, respectively. Each monitoring device 111 is electrically connected to the corresponding output line 1 and aggregation line 5, for example.

The monitoring device 111 measures the current of each output line 1 in the corresponding solar cell unit 74 with a sensor. Moreover, the monitoring apparatus 111 measures the voltage of each output line 1 in the corresponding solar cell unit 74 with a sensor.

The collecting device 151 is provided in the vicinity of the PCS 8, for example. More specifically, the collection device 151 is provided corresponding to the PCS 8 and is electrically connected to the copper bar 7 via the signal line 46.

The monitoring device 111 and the collection device 151 perform transmission and reception of information by performing power line communication (PLC: Power Line Communication) via the aggregation lines 2 and 5.

More specifically, each monitoring device 111 transmits monitoring information indicating the measurement result of the current and voltage of the corresponding output line. The collection device 151 collects the measurement results of each monitoring device 111.

[Configuration of Monitoring Device 111]
FIG. 6 is a diagram showing a configuration of a monitoring device in the monitoring system according to the embodiment of the present invention. In FIG. 6, the output line 1, the aggregation line 5 and the copper bar 77 are shown in more detail.

Referring to FIG. 6, output line 1 includes a plus side output line 1p and a minus side output line 1n. Aggregation line 5 includes a plus-side aggregation line 5p and a minus-side aggregation line 5n. The copper bar 77 includes a plus side copper bar 77p and a minus side copper bar 77n.

Although not shown, the copper bar 72 in the current collection box 71 shown in FIG. 3 includes a plus-side copper bar 72p and a minus-side copper bar 72n corresponding to the plus-side aggregation line 5p and the minus-side aggregation line 5n, respectively.

The plus side output line 1p has a first end connected to the corresponding power generation unit 78 and a second end connected to the plus side copper bar 77p. The negative side output line 1n has a first end connected to the corresponding power generation unit 78 and a second end connected to the negative side copper bar 77n.

The plus side aggregation line 5p has a first end connected to the plus side copper bar 77p and a second end connected to the plus side copper bar 72p in the current collection box 71. The minus-side aggregate line 5n has a first end connected to the minus-side copper bar 77n and a second end connected to the minus-side copper bar 72n in the current collection box 71.

The monitoring device 111 includes a detection processing unit 11, four current sensors 16, a voltage sensor 17, and a communication unit 14. Note that the monitoring device 111 may further include a large number or a small number of current sensors 16 depending on the number of output lines 1.

The monitoring device 111 is provided in the vicinity of the power generation unit 78, for example. Specifically, the monitoring device 111 is provided, for example, inside a connection box 76 provided with a copper bar 77 to which the output line 1 to be measured is connected. Note that the monitoring device 111 may be provided outside the connection box 76.

The monitoring device 111 is electrically connected to, for example, the plus-side aggregate line 5p and the minus-side aggregate line 5n via the plus-side power line 26p and the minus-side power line 26n, respectively. Hereinafter, each of the plus-side power line 26p and the minus-side power line 26n is also referred to as a power line 26.

Each monitoring device 111 transmits monitoring information indicating a measurement result regarding the corresponding power generation unit 78 via a power line connected to itself and the collecting device 151.

Specifically, the communication unit 14 in the monitoring device 111 can perform power line communication via the aggregation line with the collection device 151 that collects the measurement results of the plurality of monitoring devices 111. More specifically, the communication unit 14 can transmit and receive information via the aggregation lines 2 and 5. Specifically, the communication unit 14 performs power line communication with the collection device 151 via the power line 26 and the aggregation lines 2 and 5.

The detection processing unit 11 is set, for example, so as to create monitoring information indicating the measurement results of the current and voltage of the corresponding output line 1 every predetermined time.

The current sensor 16 measures the current of the output line 1. More specifically, the current sensor 16 is, for example, a Hall element type current probe. The current sensor 16 measures the current flowing through the corresponding negative output line 1n every 6 seconds using the power received from the power supply circuit (not shown) of the monitoring device 111, and sends a signal indicating the measurement result to the detection processing unit 11. Output. The current sensor 16 may measure a current flowing through the plus side output line 1p.

The voltage sensor 17 measures the voltage of the output line 1. More specifically, the voltage sensor 17 measures the voltage between the plus-side copper bar 77p and the minus-side copper bar 77n every 6 seconds, and outputs a signal indicating the measurement result to the detection processing unit 11.

The detection processing unit 11 includes the measurement results indicated by the signals received from the current sensor 16 and the voltage sensor 17, the ID of the corresponding current sensor 16 (hereinafter also referred to as current sensor ID), and the ID of the voltage sensor 17 (hereinafter referred to as voltage). The monitoring information including the sensor ID and the ID of the own monitoring device 111 (hereinafter also referred to as the monitoring device ID) is created.

The detection processing unit 11 calculates the generated power as the measurement result of the output of the power generation unit 78 by multiplying the current value and the voltage value for each current sensor ID, that is, for each power generation unit 78, for example. Then, the detection processing unit 11 includes the calculated generated power in the monitoring information.

Also, the detection processing unit 11 creates a monitoring information packet in which the transmission source ID is its own monitoring device ID, the transmission destination ID is the ID of the collection device 151, and the data portion is monitoring information. Then, the detection processing unit 11 outputs the created monitoring information packet to the communication unit 14. The detection processing unit 11 may include a sequence number in the monitoring information packet.

The communication unit 14 transmits the monitoring information packet received from the detection processing unit 11 to the collection device 151.

Referring to FIG. 5 again, the collection device 151 can send and receive information via the aggregation lines 2 and 5. Specifically, the collection device 151 performs power line communication with the monitoring device 111 via the signal line 46 and the aggregation lines 2 and 5, for example, and receives monitoring information packets from the plurality of monitoring devices 111.

The collection device 151 has a counter and a storage unit. When receiving the monitoring information packet from the monitoring device 111, the collecting device 151 acquires the monitoring information from the received monitoring information packet and acquires the count value in the counter as the reception time. Then, after including the reception time in the monitoring information, the collection device 151 stores the monitoring information in a storage unit (not shown).

More specifically, the counter resets the count value at, for example, midnight every day, and increments the count value every time 6 seconds, which is the measurement cycle of the monitoring device 111, elapses. In this case, when the collection device 151 receives a plurality of monitoring information packets from each of the plurality of monitoring devices 111 until 6 seconds elapse from the timing at which the count value is incremented, the collection device 151 acquires each of the plurality of monitoring information packets. The current same count value is included in the monitoring information as the reception time.

[Configuration of Determination Device 101]
FIG. 7 is a diagram showing a configuration of the determination device in the monitoring system according to the embodiment of the present invention.

7, the determination apparatus 101 includes a determination unit 81, a communication processing unit 84, a storage unit 85, and an acquisition unit 86. The acquisition unit 86 includes a measurement result acquisition unit 82 and a creation unit 83.

(A) Measurement result acquisition unit, communication processing unit, and storage unit In the storage unit 85, for example, the ID of each monitoring device 111 in the monitoring system 301, that is, the monitoring device ID is registered. In the storage unit 85, the correspondence R1 between the monitoring device ID and the ID of each sensor included in the monitoring device 111 having the monitoring device ID, that is, the current sensor ID and the voltage sensor ID is registered.

The determination apparatus 101 periodically acquires monitoring information from the collection apparatus 151, and processes the acquired monitoring information. Note that the determination device 101 may be configured to be incorporated in the collection device 151, for example, or may be configured to be embedded in the monitoring device 111 illustrated in FIG. The determination apparatus 101 may be a server that transmits and receives information to and from other apparatuses such as the collection apparatus 151 via a network.

More specifically, the communication processing unit 84 in the determination apparatus 101 performs monitoring information collection processing at a designated processing timing, for example, every day at midnight. When the determination apparatus 101 is built in the collection apparatus 151, monitoring information can be easily collected at shorter intervals.

More specifically, when the processing timing arrives, the communication processing unit 84 refers to each monitoring device ID registered in the storage unit 85, corresponds to each referenced monitoring device ID, and starts 24 hours before the processing timing. A monitoring information request for requesting monitoring information including the reception time belonging to the processing timing (hereinafter also referred to as processing date) is transmitted to the collection device 151.

When the collection device 151 receives the monitoring information request from the determination device 101, the collection device 151 transmits one or more pieces of monitoring information satisfying the content of the monitoring information request to the determination device 101 in accordance with the received monitoring information request.

FIG. 8 is a diagram showing an example of monitoring information held by the determination device in the monitoring system according to the embodiment of the present invention.

Referring to FIG. 8, when the communication processing unit 84 receives one or more pieces of monitoring information from the collection device 151 as a response to the monitoring information request, the communication unit 84 acquires the received one or more pieces of monitoring information in the acquisition unit 86. To the unit 82.

The measurement result acquisition unit 82 receives one or more pieces of monitoring information output from the communication processing unit 84, and stores the monitoring information including the reception time in the storage unit 85 and generates a processing completion notification, for example. Output to 83.

(B) Creation Unit The creation unit 83 receives the process completion notification output from the measurement result acquisition unit 82 and acquires weather information indicating the weather at the installation location of the power generation unit 78.

More specifically, for example, when receiving a processing completion notification, the creation unit 83 refers to a plurality of pieces of monitoring information stored in the storage unit 85 and determines the total generated power on the processing date for each power generation unit 78. calculate. Then, for example, the creation unit 83 selects the power generation unit 78 having the largest calculated sum. Hereinafter, the power generation unit 78 selected by the creation unit 83 is also referred to as “target power generation unit 78”.

Also, the creation unit 83 refers to the plurality of monitoring information stored in the storage unit 85 and creates generated power data indicating the time series change of the generated power of the target power generation unit 78 on the processing date. Then, the creation unit 83 estimates the weather at the installation location of the target power generation unit 78 based on the generated power generation data.

(Example 1)
FIG. 9 is a diagram showing an example of generated power data created by the creation unit in the determination apparatus according to the embodiment of the present invention. In FIG. 9, the horizontal axis indicates time, and the vertical axis indicates the ratio of the generated power of the target power generation unit 78 to the maximum value of the generated power of the target power generation unit 78 on the processing date.

Referring to FIG. 9, the creation unit 83 differentiates the graph Gs <b> 1 indicating the created generated power data, that is, differentiates the time series data of the generated power that is the measurement result of the output of the target power generation unit 78. One-time differential data indicating the slope of Gs1 is created.

FIG. 10 is a diagram showing an example of the once differentiated data created by the creating unit in the determination apparatus according to the embodiment of the present invention. In FIG. 10, the horizontal axis represents time, and the vertical axis represents the differential value of the graph Gs1.

Referring to FIG. 10, creation unit 83 further creates twice differentiated data indicating the slope of graph Gs2 by differentiating graph Gs2 indicating the created once differentiated data.

FIG. 11 is a diagram showing an example of the twice-differentiated data created by the creation unit in the determination apparatus according to the embodiment of the present invention. In FIG. 11, the horizontal axis represents time, and the vertical axis represents the differential value of the graph Gs2.

Referring to FIG. 11, a graph Gs3 indicating twice differentiated data obtained by differentiating the graph Gs1 shown in FIG. 9 twice approaches a constant value, specifically zero.

Here, when the weather at the installation location of the target power generation unit 78 is clear, the generated power of the target power generation unit 78 tends to be output stably. On the other hand, when the weather at the installation location of the target power generation unit 78 is cloudy, the light from the sun is often blocked by the clouds, and the generated power output from the target power generation unit 78 tends to be unstable.

For this reason, the creation unit 83 confirms, for example, whether or not the generated power of the target power generation unit 78 is stably output. Specifically, the creation unit 83 checks the slope of the graph Gs2 indicated by the graph Gs3, that is, whether or not the differential value of the graph Gs2 is within the range of the threshold value Th1 to the threshold value Th2, and thereby the target power generation unit 78. Estimate the weather at the installation location. The threshold value Th1 is, for example, +0.2, and the threshold value Th2 is, for example, −0.2.

In the example shown in FIG. 11, the differential value of the graph Gs2 indicated by the graph Gs3 is within the range of +0.2 to −0.2. In this case, the creation unit 83 estimates that the weather at the installation location of the target power generation unit 78 is clear. Then, the creation unit 83 outputs weather information indicating the estimated weather to the determination unit 81.

(Example 2)
FIG. 12 is a diagram showing another example of generated power data created by the creation unit in the determination apparatus according to the embodiment of the present invention. In FIG. 12, the horizontal axis indicates time, and the vertical axis indicates the ratio of the generated power of the target power generation unit 78 to the maximum value of the generated power of the target power generation unit 78 on the processing date.

Referring to FIG. 12, the creation unit 83 differentiates the graph Gs11 indicating the generated generated power data, thereby creating single differential data indicating the slope of the graph Gs11.

FIG. 13 is a diagram showing another example of the once differentiated data created by the creating unit in the determination apparatus according to the embodiment of the present invention. In FIG. 13, the horizontal axis represents time, and the vertical axis represents the differential value of the graph Gs11.

Referring to FIG. 13, creation unit 83 further creates twice differentiated data indicating the slope of graph Gs12 by differentiating graph Gs12 indicating the created once differentiated data.

FIG. 14 is a diagram illustrating another example of the twice differentiated data created by the creating unit in the determination apparatus according to the embodiment of the present invention. In FIG. 14, the horizontal axis indicates time, and the vertical axis indicates the differential value of the graph Gs12.

In the example shown in FIG. 14, the differential value of the graph Gs12 indicated by the graph Gs13 exceeds the range of +0.2 to −0.2. In this case, the creation unit 83 estimates that the weather at the installation location of the target power generation unit 78 is cloudy. Then, the creation unit 83 outputs weather information indicating the estimated weather to the determination unit 81.

(Example 3)
FIG. 15 is a diagram showing another example of the generated power data and the twice differential data created by the creation unit in the determination apparatus according to the embodiment of the present invention. In FIG. 15, the horizontal axis represents time, and the vertical axis represents the ratio of the generated power of the target power generation unit 78 to the maximum value of the generated power of the target power generation unit 78 on the processing date, and the differential value obtained by differentiating the graph Gs21 twice. Show.

Referring to FIG. 15, the creation unit 83 estimates the weather for each hour on the processing day, not limited to the configuration for estimating the weather on the entire processing day as in Example 1 and Example 2 described above. It may be a configuration.

For example, as illustrated in FIG. 15, the creation unit 83 performs one hour on the processing date based on a graph Gs23 indicating twice differentiated data obtained by differentiating twice with respect to a graph Gs21 indicating generated power data. Estimate the weather for each. Accordingly, the creation unit 83 determines that the weather from 7 o'clock to 10 o'clock is sunny, the weather from 10 o'clock to 15 o'clock is cloudy, and the weather from 15 o'clock to 17 o'clock is sunny. Create weather information to show.

Further, the creation unit 83 may create weather information indicating that, for example, the weather in the morning is clear and the weather in the afternoon is cloudy by estimating the weather every several hours on the processing date.

Note that the creation unit 83 is not limited to the configuration of performing differentiation twice on the graph Gs1, but may be configured to perform differentiation on the graph Gs1 once, or may be configured to perform differentiation on three times or more. There may be. For example, the creation unit 83 performs one or more differentiations until the differential value of the graph Gs1 approaches a certain value.

Further, the creation unit 83 only needs to confirm whether or not the power generated by the power generation unit 78 is stably output, and is not limited to a configuration that performs differentiation to make the differential value of the graph Gs1 approach a constant value.

Further, the creation unit 83 is not limited to the configuration in which the target power generation unit 78 is selected based on the generated power of each power generation unit 78, and may select the target power generation unit 78 based on some other criteria.

Further, the creation unit 83 may select a plurality of target power generation units 78. For example, when a plurality of power generation units 78 included in the solar power generation system 401 are divided and installed in a plurality of sections, the creation unit 83 may select one target power generation unit 78 for each section.

Further, the creation unit 83 may be configured not to select the target power generation unit 78. In this case, for example, the creation unit 83 creates weather information for each power generation unit 78 included in the solar power generation system 401 based on the generated power.

Further, the creation unit 83 is not limited to a configuration for creating weather information. For example, the creation unit 83 may acquire weather forecast information transmitted from an external server and indicating the weather forecast content in the vicinity of the installation location of the power generation unit 78 via the communication processing unit 84 as weather information.

In addition, the creation unit 83 obtains weather information based on the measurement result of a measurement device such as a pyranometer provided near the installation location of the power generation unit 78 instead of the measurement result of the output of the power generation unit 78, that is, the generated power. You may create it.

However, the weather forecast indicated by the weather forecast information transmitted from the external server may be different from the weather at the place where the power generation unit 78 is installed. When the installation location of the measurement device and the installation location of the power generation unit 78 are different, the weather indicated by the weather information based on the measurement result by the measurement device may be different from the weather at the installation location of the power generation unit 78.

For this reason, it is preferable that the creation unit 83 is configured to create weather information based on the measurement result of the output of the power generation unit 78.

(C) Determination part The determination part 81 receives the weather information output from the preparation part 83, and determines the reference | standard used for the abnormality determination of the electric power generation part 78 based on the said weather information. And the determination part 81 performs abnormality determination of the electric power generation part 78 using the determined reference | standard.

FIG. 16 is a diagram for explaining abnormality determination by the determination unit in the determination apparatus according to the embodiment of the present invention.

Referring to FIG. 16, here, creation unit 83 creates weather information indicating morning weather and afternoon weather for each power generation unit 78 included in solar power generation system 401, and creates a plurality of weather information created. Is output to the determination unit 81.

In this case, the determination unit 81 classifies the plurality of power generation units 78 included in the solar power generation system 401 into a plurality of groups based on the plurality of weather information received from the creation unit 83, for example.

Specifically, when the fluctuation of the generated power of a certain power generation unit 78 is small in both the morning time zone and the afternoon time zone, the weather information corresponding to the power generation unit 78 indicates that it is sunny all day. In this case, the determination unit 81 classifies the power generation unit 78 into “group G1”.

Further, when the fluctuation of the generated power of a certain power generation unit 78 is large in the morning time zone and small in the afternoon time zone, the weather information corresponding to the power generation unit 78 indicates that the morning is cloudy and the afternoon is clear. Show. In this case, the determination unit 81 classifies the power generation unit 78 into “group G2”.

When the fluctuation of the generated power of a certain power generation unit 78 is small in the morning time zone and large in the afternoon time zone, the weather information corresponding to the power generation unit 78 indicates that the morning is sunny and the afternoon is cloudy. Show. In this case, the determination unit 81 classifies the power generation unit 78 into “group G3”.

Further, when the fluctuation in the generated power of a certain power generation unit 78 is large in both the morning time zone and the afternoon time zone, the weather information corresponding to the power generation unit 78 is cloudy all day. In this case, the determination unit 81 classifies the power generation unit 78 into “group G4”.

Here, when the weather at the place where the power generation unit 78 is installed is sunny, the power generated by the power generation unit 78 is highly likely to be affected by shadows as the light from the sun goes straight. On the other hand, when the weather at the place where the power generation unit 78 is installed is cloudy, the power generated by the power generation unit 78 is less likely to be affected by shadows due to scattering of light from the sun. For this reason, the determination unit 81 performs abnormality determination of the power generation unit 78 using different determination criteria for each group to which the power generation unit 78 belongs.

(Abnormality judgment of power generation unit belonging to group G1)
The determination unit 81 determines a reference St used for abnormality determination of each power generation unit 78 belonging to the group G1.

More specifically, the determination unit 81 uses one or more power generation units 78 belonging to the group G1 as a plurality of determinations by using k-means based on the generated power of each power generation unit 78 belonging to the group G1, for example. Classify into groups.

For example, the determination unit 81 includes one or more power generation units 78 belonging to the group G1 as a determination group G11 that tends to be affected by shadows in the morning and a determination group G12 that tends to be affected by shadows in the afternoon. Classify. And the determination part 81 compares the electric power generation of each power generation part 78 which belongs to the same determination group.

Specifically, the determination unit 81 creates the reference data of the determination group G11 by calculating the average value of the generated power at the same time of each power generation unit 78 belonging to the determination group G11 every hour.

In addition, for example, the determination unit 81 determines whether the difference between the sum of the generated power on the processing date of the power generation unit 78 to be determined for abnormality determination and the sum of the generated power indicated by the created reference data is greater than or equal to a predetermined threshold value. Whether or not is determined as a reference St. And the determination part 81 performs abnormality determination by comparing the generated electric power of each power generation part 78 which belongs to the determination group G11 using the determined standard St.

That is, when the difference between the total generated power on the processing date of the power generation unit 78 and the total generated power indicated by the reference data is equal to or greater than a predetermined threshold, the determination unit 81 has an abnormality in the power generation unit 78. It is determined that

Moreover, the determination part 81 performs similarly about abnormality determination of each electric power generation part 78 which belongs to the determination group G12. That is, when determining the abnormality of each power generation unit 78 belonging to the determination group G12, the determination unit 81 calculates, for example, an average value of generated power at the same time of each power generation unit 78 belonging to the determination group G12 every hour. Thus, the reference data of the determination group G12 is created.

In addition, for example, the determination unit 81 determines whether the difference between the sum of the generated power on the processing date of the power generation unit 78 to be determined for abnormality determination and the sum of the generated power indicated by the created reference data is greater than or equal to a predetermined threshold value. Whether or not is determined as a reference St. And the determination part 81 performs abnormality determination by comparing the generated electric power of each power generation part 78 which belongs to the determination group G12 using the determined standard St.

That is, when the difference between the total generated power on the processing date of the power generation unit 78 and the total generated power indicated by the second reference data is equal to or greater than a predetermined threshold, the determination unit 81 has an abnormality in the power generation unit 78. Determine that it has occurred.

(Abnormality determination of power generation unit belonging to group G2)
Moreover, the determination part 81 determines the reference | standard St used for abnormality determination of each electric power generation part 78 which belongs to the group G2.

More specifically, the determination unit 81 uses, for example, k-means based on the generated power of each power generation unit 78 belonging to the group G2 and generated power in a clear time zone, that is, the afternoon time zone. The one or more power generation units 78 belonging to the group G2 are classified into a plurality of determination groups.

Moreover, the determination part 81 produces | generates reference data for every determination group, for example similarly to the abnormality determination of the electric power generation part 78 which belongs to the above-mentioned group G1, The reference | standard St for every determination group is produced using the created reference data. decide. And the determination part 81 performs abnormality determination by comparing the generated electric power of the electric power generation part 78 using the determined reference | standard St for every determination group.

(Abnormality judgment of power generation unit belonging to group G3)
Moreover, the determination part 81 determines the reference | standard St used for abnormality determination of each electric power generation part 78 which belongs to the group G3.

More specifically, the determining unit 81 uses, for example, k-means based on the generated power of each power generation unit 78 belonging to the group G3 and based on the generated power in a clear time period, that is, the morning time period. The one or more power generation units 78 belonging to the group G3 are classified into a plurality of determination groups.

Moreover, the determination part 81 produces | generates reference data for every determination group, for example similarly to the abnormality determination of the electric power generation part 78 which belongs to the above-mentioned group G1, The reference | standard St for every determination group is produced using the created reference data. decide. And the determination part 81 performs abnormality determination by comparing the generated electric power of the electric power generation part 78 using the determined reference | standard St for every determination group.

(Abnormality determination of power generation unit belonging to group G4)
Moreover, the determination part 81 determines the reference | standard St used for abnormality determination of each electric power generation part 78 which belongs to the group G4.

More specifically, for example, the determination unit 81 compares the generated power of each power generation unit 78 belonging to the group G4 without classifying one or more power generation units 78 belonging to the group G4 into a plurality of determination groups.

Specifically, the determination unit 81 creates reference data for the group G4 by, for example, calculating an average value of generated power at the same time of the power generation units 78 belonging to the group G4 every hour.

Then, the determination unit 81 determines whether or not the difference between the sum of the generated power on the processing date of the power generation unit 78 to be determined for abnormality determination and the sum of the generated power indicated by the created reference data is equal to or greater than a predetermined threshold value. Is determined as a reference St, and abnormality determination is performed by comparing the generated power of each power generation unit 78 belonging to the group G4 using the determined reference St4.

Note that the abnormality determination by the determination unit 81 is not limited to the method of comparing the generated power of the power generation units 78 belonging to the same group. For example, when the determination unit 81 performs an abnormality determination of a certain power generation unit 78 and indicates that the weather information corresponding to the power generation unit 78 is clear all day, the catalog specification value of the power generation unit 78 is used as a reference. An abnormality determination of the power generation unit 78 may be performed as St.

(Notification of judgment result)
The determination unit 81 outputs determination information indicating the determination result of the abnormality determination to the communication processing unit 84. The communication processing unit 84 transmits the determination information received from the determination unit 81 to an external device such as a server via a network in a format such as e-mail.

<Operation flow>
Each device in the monitoring system 301 includes a computer, and an arithmetic processing unit such as a CPU in the computer reads and executes a program including a part or all of each step of the following flowchart from a memory (not shown). Each of the programs of the plurality of apparatuses can be installed from the outside. The programs of the plurality of apparatuses are distributed while being stored in a recording medium.

FIG. 17 is a flowchart that defines the operation procedure of the determination apparatus according to the embodiment of the present invention.

7 and 17, first, the measurement result acquisition unit 82 receives one or a plurality of monitoring information transmitted from the collection device 151 via the communication processing unit 84, and receives the reception time in each received monitoring information. Are stored in the storage unit 85, and a processing completion notification is output to the creation unit 83 (step S11).

Next, the creation unit 83 receives the processing completion notification output from the measurement result acquisition unit 82, refers to a plurality of monitoring information stored in the storage unit 85, for example, generates power for each power generation unit 78. Generated power data indicating a time-series change in power is created (step S12).

Next, for example, for each power generation unit 78, the creation unit 83 confirms whether or not the result of twice differentiation with respect to the graph Gs1 indicating the generated generated power data is within the range of the threshold value Th1 to the threshold value Th2. Thus, it is confirmed whether or not the generated power is stably output (step S13).

Next, the creation unit 83 estimates, for example, the weather at the installation location based on the confirmation result of whether or not the generated power is stably output for each power generation unit 78, and provides weather information indicating the estimation result. create. Then, the creation unit 83 outputs the created weather information to the determination unit 81 (step S14).

Next, for example, the determination unit 81 classifies the plurality of power generation units 78 included in the solar power generation system 401 into a plurality of groups based on the plurality of weather information output from the creation unit 83 (step S15).

Next, the determination unit 81 determines a reference St used for abnormality determination of the power generation unit 78 for each classified group (step S16).

Next, the determination unit 81 performs abnormality determination of each power generation unit 78 using the determined reference St for each group, and outputs determination information indicating the determination result of the abnormality determination to the communication processing unit 84 (step S17). .

Next, the communication processing unit 84 transmits the determination information received from the determination unit 81 to an external device such as a server via a network, for example (step S18).

By the way, since the amount of power generated by the power generation unit including the solar cell panel is affected by the weather, a technology that can grasp the weather at the installation location of the power generation unit and use it more effectively is desired.

On the other hand, in the determination apparatus 101 according to the embodiment of the present invention, the acquisition unit 86 acquires weather information at the installation location of the power generation unit 78 including the solar battery panel. And the determination part 81 determines the reference | standard St used for abnormality determination of the electric power generation part 78 based on the weather information acquired by the acquisition part 86, and performs abnormality determination using the determined reference | standard St.

With such a configuration, the abnormality determination of the power generation unit 78 can be performed using the reference St having the contents according to the weather at the installation location of the power generation unit 78, so the accuracy of the abnormality determination can be improved.

Therefore, in the determination apparatus 101 according to the embodiment of the present invention, the weather at the installation location of the power generation unit 78 including the solar battery panel can be used more effectively.

Moreover, in the determination apparatus 101 according to the embodiment of the present invention, the acquisition unit 86 acquires a measurement result of the output of the power generation unit 78 and creates weather information based on the acquired measurement result.

As described above, the configuration in which the weather information is generated based on the power generation results of the power generation unit 78 is more accurate than the case where the weather information transmitted from the external server is acquired. Weather information can be acquired.

Moreover, in the determination apparatus 101 according to the embodiment of the present invention, the acquisition unit 86 creates weather information based on the result obtained by differentiating the measurement result twice.

With such a configuration, it can be easily confirmed whether or not the power generation unit 78 stably outputs the generated power.

Moreover, in the determination apparatus 101 according to the embodiment of the present invention, the determination unit 81 classifies the plurality of power generation units 78 into a plurality of groups based on weather information, determines a reference St for each group, and the same group The abnormality determination of the power generation unit 78 is performed by comparing the measurement results of the outputs of the power generation units 78 belonging to the group using the reference St corresponding to the group.

As described above, the configuration for performing the abnormality determination by comparing the power generation units 78 having the same influence on the generated power due to the weather can improve the accuracy of the abnormality determination without performing complicated calculation processing.

In the determination method according to the embodiment of the present invention, first, the acquisition unit 86 acquires weather information at the installation location of the power generation unit 78 including the solar battery panel. Next, the determination unit 81 determines a reference St used for abnormality determination of the power generation unit 78 based on the weather information acquired by the acquisition unit 86. And the determination part 81 performs abnormality determination of the electric power generation part 78 using the determined reference | standard St.

By such a method, the abnormality determination of the power generation unit 78 can be performed using the reference St having the contents according to the weather at the installation location of the power generation unit 78, so that the accuracy of the abnormality determination can be improved.

Therefore, in the determination method according to the embodiment of the present invention, the weather at the place where the power generation unit 78 including the solar battery panel is installed can be used more effectively.

<Modification>
The measurement result acquisition unit 82 and the creation unit 83 illustrated in FIG. 7 are not limited to the configuration included in the determination device 101 that performs abnormality determination of the power generation unit 78. For example, the measurement result acquisition unit 82 and the creation unit 83 may be included in a weather information processing device that transmits weather information to an external device.

[Configuration and basic operation]
FIG. 18 is a diagram showing a configuration of a weather information processing apparatus according to a modification of the embodiment of the present invention.

5 and 18, the monitoring system 301 includes a weather information processing apparatus 121 instead of or in addition to the determination apparatus 101. The weather information processing apparatus 121 may be configured to be built in the collecting apparatus 151 or may be configured to be built in the monitoring apparatus 111. The weather information processing apparatus 121 may be a server that transmits and receives information to and from other apparatuses such as the collection apparatus 151 via a network.

The weather information processing apparatus 121 receives, for example, one or more pieces of monitoring information transmitted from the monitoring apparatus 111 via the collection apparatus 151, and creates weather information based on the received one or more pieces of monitoring information.

More specifically, the weather information processing apparatus 121 includes a communication processing unit 94, a storage unit 95, and an acquisition unit 96. The acquisition unit 96 includes a measurement result acquisition unit 92 and a creation unit 93. The configuration and operation of the measurement result acquisition unit 92, the creation unit 93, the communication processing unit 94, and the storage unit 95 are the same as the measurement result acquisition unit 82, the creation unit 83, and the communication process illustrated in FIG. The configuration and operation of the unit 84 and the storage unit 85 are the same.

The creation unit 93 refers to a plurality of pieces of monitoring information stored in the storage unit 95, and creates generated power data indicating, for example, a time-series change in the generated power of each power generation unit 78 on the processing date. Then, the creation unit 83 estimates the weather at the installation location for each power generation unit 78 based on the generated power generation data, and creates weather information indicating the estimated weather.

Also, the creation unit 93 outputs the created one or more weather information to the communication processing unit 94.

The communication processing unit 94 receives one or more weather information output from the creation unit 93, and converts the received one or more weather information into an external format such as a server via a network in the form of e-mail, for example. To the device.

[Flow of operation]
FIG. 19 is a flowchart defining the operation procedure of the weather information processing apparatus according to the modification of the embodiment of the present invention.

18 and 19, first, the measurement result acquisition unit 92 receives one or more pieces of monitoring information transmitted from the collection device 151 via the communication processing unit 94, and receives the reception time in each received monitoring information. Are stored in the storage unit 95, and a processing completion notification is output to the creation unit 93 (step S21).

Next, the creation unit 93 receives the processing completion notification output from the measurement result acquisition unit 92 and refers to a plurality of monitoring information stored in the storage unit 95, for example, for each power generation unit 78. Generated power data indicating a time-series change in power is created (step S22).

Next, for example, for each power generation unit 78, the generation unit 93 confirms whether the result of differentiation twice with respect to the graph Gs1 indicating the generated generated power data is within the range of the threshold value Th1 to the threshold value Th2. Thus, it is confirmed whether or not the generated power is stably output (step S23).

Next, the creation unit 93 estimates, for example, the weather at the installation location for each power generation unit 78 based on the confirmation result of whether or not the generated power is stably output, and provides weather information indicating the estimation result. Create (step S24).

Then, the creating unit 93 transmits the created weather information to an external device such as a server via the communication processing unit 94 via a network (step S25).

Thus, in the weather information processing apparatus 121 according to the modification of the embodiment of the present invention, the measurement result acquisition unit 82 acquires the measurement result of the output of the power generation unit 78 including the solar battery panel. Then, the creation unit 83 creates weather information at the installation location of the power generation unit 78 based on the measurement result acquired by the measurement result acquisition unit 82.

With such a configuration, for example, more accurate weather information is created by confirming whether or not the power generation unit 78 stably outputs the generated power based on the measurement result of the output of the power generation unit 78. can do. For this reason, more accurate weather information can be transmitted to an external server or the like.

Therefore, in the weather information processing apparatus 121 according to the modification of the embodiment of the present invention, the weather at the installation location of the power generation unit 78 including the solar battery panel can be used more effectively.

In the weather information processing method according to the modification of the embodiment of the present invention, first, the measurement result acquisition unit 82 acquires the measurement result of the output of the power generation unit 78 including the solar battery panel. Then, the creation unit 83 creates weather information at the installation location of the power generation unit 78 based on the measurement result acquired by the measurement result acquisition unit 82.

By such a method, for example, based on the measurement result of the output of the power generation unit 78, by confirming whether or not the power generation unit 78 stably outputs the generated power, more accurate weather information is created. can do. For this reason, more accurate weather information can be transmitted to an external server or the like.

Therefore, in the weather information processing method according to the modification of the embodiment of the present invention, the weather at the place where the power generation unit 78 including the solar battery panel is installed can be used more effectively.

It should be considered that the above embodiment is illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

The above description includes the following features.
[Appendix 1]
An acquisition unit for acquiring weather information at the installation location of the power generation unit including the solar panel;
Based on the weather information acquired by the acquisition unit, determining a reference used for abnormality determination of the power generation unit, and a determination unit that performs the abnormality determination using the determined criterion,
The acquisition unit confirms whether or not the output is stable by differentiating time-series data of the measurement result of the output of the power generation unit, and the weather indicating sunny when the output is stable A determination apparatus that creates information and creates the weather information indicating cloudiness when the output is not stable.

[Appendix 2]
A measurement result acquisition unit for acquiring a measurement result of the output of the power generation unit including the solar battery panel;
Based on the measurement result acquired by the measurement result acquisition unit, comprising a creation unit that creates weather information at the installation location of the power generation unit,
The measurement result acquisition unit confirms whether the output is stable by differentiating time series data of the measurement result of the output, and the weather information indicating sunny when the output is stable The weather information processing apparatus creates the weather information indicating cloudiness when the output is not stable.

1 output line 1p plus side output line 1n minus side output line 2,4,5 aggregation line 5p plus side aggregation line 5n minus side aggregation line 3 internal line 6 cubicle 7 copper bar 8 PCS
DESCRIPTION OF SYMBOLS 9 Power conversion part 11 Detection processing part 14 Communication part 16 Current sensor 17 Voltage sensor 26 Power supply line 26p Positive side power supply line 26n Negative side power supply line 46 Signal line 60 Current collection unit 71 Current collection box 72, 73, 77 Copper bar 77p Plus Side copper bar 77n Negative side copper bar 74 Solar cell unit 76 Junction box 78 Power generation unit 79, 79A, 79B, 79C, 79D Solar cell panel 80 PCS unit 81 Determination unit 82, 92 Measurement result acquisition unit 83, 93 Creation unit 84, 94 Communication Processing Unit 85, 95 Storage Unit 86, 96 Acquisition Unit 101 Determination Device 111 Monitoring Device 121 Weather Information Processing Device 151 Collection Device 301 Monitoring System 401 Solar Power Generation System

Claims (7)

1. An acquisition unit for acquiring weather information at the installation location of the power generation unit including the solar panel;
   A determination apparatus comprising: a determination unit configured to determine a reference to be used for abnormality determination of the power generation unit based on the weather information acquired by the acquisition unit, and to perform the abnormality determination using the determined reference.
2. The determination device according to claim 1, wherein the acquisition unit acquires a measurement result of an output of the power generation unit, and creates the weather information based on the acquired measurement result.
3. The determination device according to claim 2, wherein the acquisition unit creates the weather information based on a result obtained by differentiating the measurement result twice.
4. The determination unit classifies the plurality of power generation units into a plurality of groups based on the weather information, determines the reference for each group, and outputs measurement results of the power generation units belonging to the same group. The determination apparatus according to any one of claims 1 to 3, wherein the abnormality determination is performed by comparison using the reference corresponding to the group.
5. A measurement result acquisition unit for acquiring a measurement result of the output of the power generation unit including the solar battery panel;
   A weather information processing apparatus comprising: a creation unit that creates weather information at an installation location of the power generation unit based on the measurement result acquired by the measurement result acquisition unit.
6. A determination method in a determination apparatus,
   Obtaining weather information at the installation location of the power generation unit including the solar panel;
   Based on the acquired weather information, determining a reference used for abnormality determination of the power generation unit;
   Performing the abnormality determination using the determined reference.
7. A weather information processing method in a weather information processing apparatus,
   Obtaining a measurement result of the output of the power generation unit including the solar battery panel;
   Creating weather information at an installation location of the power generation unit based on the acquired measurement result.

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