JP7173128B2 - GENERATING UNIT RELOCATION EQUIPMENT AND OPERATION PROCESSING METHOD - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power generating section rearrangement calculation device and a calculation processing method.
This application claims priority based on Japanese Patent Application No. 2018-63516 filed on March 29, 2018, and incorporates all of its disclosure herein.

Japanese Patent Laying-Open No. 2012-205078 (Patent Document 1) discloses a monitoring system for photovoltaic power generation as follows. That is, the monitoring system for photovoltaic power generation is a monitoring system for photovoltaic power generation that monitors the power generation status of the solar cell panels in a photovoltaic power generation system in which outputs from a plurality of solar cell panels are aggregated and sent to a power conversion device. a measuring device for measuring the amount of power generated by each solar panel provided at a place where the output lines from the plurality of solar panels are aggregated; and a measuring device connected to the measuring device for measuring the amount of power generated by the measuring device. A lower communication device having a function of transmitting measurement data, a higher communication device having a function of receiving the measurement data transmitted from the lower communication device, and the solar panel via the higher 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 an abnormality based on the difference in the amount of power generation at the same time for each solar panel, or the maximum value or integration of the amount of power generation for a predetermined period for each solar panel The presence or absence of abnormality is determined based on the value.

JP 2012-205078 A

(1) The power generation unit relocation calculation device of the present disclosure includes a position information acquisition unit that acquires position information indicating the positional relationship of a plurality of power generation units each including a solar panel, and a measurement result of the output of each power generation unit. a classification result acquisition unit that acquires results of classifying each of the power generation units into a plurality of groups based on the location information acquired by the location information acquisition unit and the classification results acquired by the classification result acquisition unit an arithmetic processing unit capable of creating candidate information indicating changes in the positional relationship of each of the power generation units belonging to at least one target group among the plurality of groups based on the above.

(4) An arithmetic processing method of the present disclosure is an arithmetic processing method in a power generation unit rearrangement arithmetic device, comprising a step of acquiring position information indicating a positional relationship between a plurality of power generation units each including a solar cell panel; acquiring results of classifying each of the power generation units into a plurality of groups based on measurement results of outputs of the power generation units; and determining at least one of the plurality of groups based on the acquired position information and the classification results. or creating candidate information indicating changes in the positional relationship of each of the power generation units belonging to one target group.

One aspect of the present disclosure can be implemented not only as a power generation unit rearrangement arithmetic device including such a characteristic processing unit, but also as a program for causing a computer to execute such characteristic processing. Further, one aspect of the present disclosure can be implemented as a semiconductor integrated circuit that implements part or all of the power generation unit relocation arithmetic device, or can be implemented as a power generation unit relocation arithmetic system including the power generation unit relocation arithmetic device. .

FIG. 1 is a diagram showing the configuration of a photovoltaic power generation system according to an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of the PCS unit according to the embodiment of the invention. FIG. 3 is a diagram showing the configuration of the current collecting unit according to the embodiment of the invention. FIG. 4 is a diagram showing the configuration of a solar cell unit according to an embodiment of the invention. FIG. 5 is a diagram showing the configuration of the monitoring system according to the embodiment of the invention. FIG. 6 is a diagram showing the configuration of a monitoring device in the monitoring system according to the embodiment of the invention. FIG. 7 is a diagram showing the configuration of a power generation section rearrangement arithmetic device in the monitoring system according to the embodiment of the present invention. FIG. 8 is a diagram showing an example of the content of position information stored in a storage unit in the power generation unit rearrangement arithmetic device according to the embodiment of the present invention. FIG. 9 is a diagram showing an example of monitoring information held by the power generation unit relocation arithmetic device in the monitoring system according to the embodiment of the present invention. FIG. 10 is a diagram showing an example of a classification result of power generation units by the classification unit in the power generation unit rearrangement arithmetic device according to the embodiment of the present invention. FIG. 11 is a diagram showing an example of candidate information created by the arithmetic processing unit in the power generation unit relocation arithmetic device according to the embodiment of the present invention. FIG. 12 is a flow chart defining the operation procedure of the power generation section relocation arithmetic device according to the embodiment of the present invention.

In recent years, techniques related to photovoltaic power generation systems have been developed.

[Problems to be Solved by the Present Disclosure]
When a plurality of solar cell panels included in the power generation unit are connected in series, if at least a part of each solar cell panel is shaded, the power generated by the solar cell panel that is not shaded is also affected by the shaded sun. It will be the same size as the power generated by the battery panel.

The present disclosure has been made in order to solve the above-mentioned problems, and the purpose thereof is to provide a power generation unit rearrangement calculation device and a calculation processing method that can construct a more efficient photovoltaic power generation system. be.

[Effect of the present disclosure]
According to the present disclosure, a more efficient photovoltaic power generation system can be constructed.

[Description of Embodiments of the Present Invention]
First, the contents of the embodiments of the present invention will be listed and explained.

(1) A power generation unit relocation calculation device according to an embodiment of the present invention includes a position information acquisition unit that acquires position information indicating a positional relationship between a plurality of power generation units each including a solar cell panel; A classification result acquisition unit that acquires results of classifying each of the power generation units into a plurality of groups based on output measurement results; the position information acquired by the position information acquisition unit; an arithmetic processing unit capable of creating candidate information indicating a change in the positional relationship of each of the power generation units belonging to at least one of the plurality of groups, based on the classification result.

In this way, with the configuration in which the candidate information is created using the classification result of each power generation unit based on the measurement result of the output of each power generation unit, the user can control the contents of the candidate information created by the power generation unit rearrangement calculation device. By confirming , it is possible to grasp a more appropriate positional relationship between the power generation units belonging to the target group. Therefore, a more efficient photovoltaic power generation system can be constructed.

(2) Preferably, the arithmetic processing unit uses the measurement result in a group different from the target group among the plurality of groups to determine the target group in the positional relationship after the change indicated by the candidate information. Calculate the predicted value of the measurement result in.

In this way, with the configuration in which the predicted value is calculated using the measurement result of the output in a group different from the target group, the user can check the predicted value calculated by the power generation unit relocation calculation device, for example, the target It is possible to consider whether or not to change the positional relationship indicated by the candidate information in consideration of the income from power sales associated with the increase in the output of the generated power in the group.

(3) Preferably, the arithmetic processing unit creates the candidate information such that the measurement result in the target group is large.

With such a configuration, it is possible to increase the output in the target group by changing the positional relationship of each power generation unit according to the content indicated by the candidate information.

(4) An arithmetic processing method according to an embodiment of the present invention is an arithmetic processing method in a power generation unit rearrangement arithmetic device, and acquires position information indicating the positional relationship of a plurality of power generation units each including a solar cell panel. obtaining a result of classifying each of the power generation units into a plurality of groups based on the results of measurement of the output of each of the power generation units; and classifying the plurality of groups based on the obtained position information and the classification results. generating candidate information indicating changes in the positional relationship of the power generation units belonging to at least one of the target groups.

In this way, by using the method of creating candidate information using the classification result of each power generation unit based on the measurement result of the output of each power generation unit, the user can understand the contents of the candidate information created by the power generation unit rearrangement calculation device. By confirming , it is possible to grasp a more appropriate positional relationship between the power generation units belonging to the target group. Therefore, a more efficient photovoltaic power generation system can be constructed.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The same or corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated. Moreover, at least part of the embodiments described below may be combined arbitrarily.

<Configuration and basic operation>
[Configuration of photovoltaic power generation system]
FIG. 1 is a diagram showing the 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 cubicles 6 . Cubicle 6 includes copper bars 73 .

Although four PCS units 80 are representatively shown in FIG. 1, more or fewer PCS units 80 may be provided.

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

Referring to FIG. 2, PCS unit 80 includes four power collection units 60 and PCS (power converter) 8 . PCS 8 includes copper bar 7 and power converter 9 .

FIG. 2 representatively shows four collector units 60, but more or fewer collector units 60 may be provided.

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

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

FIG. 3 representatively shows four solar cell units 74, but more or fewer solar cell units 74 may be provided.

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

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

Although four power generation units 78 are representatively shown in FIG. 4, more or less power generation units 78 may be provided.

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

Note that the power generation unit 78 may further have a large or small number of solar cell panels 79 .

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

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

Upon receiving sunlight, the power generation unit 78 converts the energy of the received sunlight into DC power and outputs the converted DC power to the output line 1 .

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

1 to 4, in solar power generation system 401, each output line 1 from a plurality of power generation units 78 is aggregated into aggregate line 5, and each aggregate line 5 is aggregated into aggregate line 2, as described above. , each aggregated line 2 is aggregated into an aggregated line 4 , and each aggregated line 4 is electrically connected to a cubicle 6 .

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

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

Aggregate line 4 has a first end connected to power converter 9 and a second end connected to copper bar 73 .

In the cubicle 6 , the AC power output from the power converter 9 in each PCS 8 to each aggregate line 4 is output to the grid 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 invention.

Referring to FIG. 5 , solar power generation system 401 includes monitoring system 301 . The monitoring system 301 includes a power generation section relocation arithmetic 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 more or fewer monitoring devices 111 may be provided. Also, 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 child device, is transmitted to the collecting 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, for example, electrically connected to a corresponding output line 1 and aggregate line 5 .

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

The collection device 151 is provided near the PCS8, for example. More specifically, the collection device 151 is provided corresponding to the PCS 8 and electrically connected to the copper bar 7 via the signal line 46 .

The monitoring device 111 and the collection device 151 transmit and receive information by performing power line communication (PLC: Power Line Communication) via the integrated lines 2 and 5 .

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

Note that the power generation unit rearrangement arithmetic device 101 may be configured to be built in the collection device 151, for example, or may be built in the monitoring device 111 shown in FIG. Also, the power generation unit relocation arithmetic device 101 may be a server that transmits and receives information to and from other devices such as the collection device 151 via a network.

[Configuration of monitoring device 111]
FIG. 6 is a diagram showing the configuration of a monitoring device in the monitoring system according to the embodiment of the invention. In FIG. 6 output line 1, aggregate line 5 and 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. Aggregate line 5 includes a plus side aggregate line 5p and a minus side aggregate line 5n. Copper bars 77 include plus side copper bars 77p and minus side copper bars 77n.

Although not shown, copper bars 72 in current collection box 71 shown in FIG. 3 include plus side copper bars 72p and minus side copper bars 72n corresponding to plus side aggregate line 5p and minus side aggregate line 5n, respectively.

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

The plus side aggregate line 5 p has a first end connected to the plus side copper bar 77 p and a second end connected to the plus side copper bar 72 p in the current collection box 71 . The negative aggregate line 5n has a first end connected to the negative copper bar 77n and a second end connected to the negative copper bar 72n in the collector 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 have more or less current sensors 16 depending on the number of output lines 1 .

Monitoring device 111 is provided, for example, near power generation unit 78 . 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 .

Monitoring device 111 is, for example, electrically connected to plus-side aggregate line 5p and minus-side aggregate line 5n via plus-side power supply line 26p and minus-side power supply line 26n, respectively. Each of the plus-side power supply line 26p and the minus-side power supply line 26n is also referred to as a power supply line 26 hereinafter.

Each monitoring device 111 transmits monitoring information indicating the measurement result of the corresponding power generation unit 78 via the 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 an aggregate line with the collection device 151 that collects the measurement results of the plurality of monitoring devices 111 . More specifically, the communication section 14 can transmit and receive information via the aggregate 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 aggregate lines 2 and 5 .

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

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

A voltage sensor 17 measures the voltage of the output line 1 . More specifically, the voltage sensor 17 measures the voltage between the positive side copper bar 77p and the negative side copper bar 77n every 6 seconds, and outputs a signal indicating the measurement result to the detection processing section 11 .

The detection processing unit 11 obtains 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 the current sensor ID), and the ID of the voltage sensor 17 (hereinafter referred to as the voltage sensor ID). (also referred to as a sensor ID) and the ID of its own monitoring device 111 (hereinafter also referred to as a monitoring device ID).

Further, the detection processing unit 11 multiplies the current value and the voltage value for each current sensor ID, that is, for each power generation unit 78 , to calculate the generated power as a measurement result of the output of the power generation unit 78 . Then, the detection processing unit 11 includes the calculated generated power in the monitoring information.

The detection processing unit 11 creates a monitoring information packet in which the source ID is the monitoring device ID of itself, the destination ID is the ID of the collection device 151, and the data portion is the monitoring information. The detection processing unit 11 then outputs the created monitoring information packet to the communication unit 14 . Note that 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 again to FIG. 5, collection device 151 is capable of transmitting and receiving information via 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, and receives monitoring information packets from the plurality of monitoring devices 111, for example.

The collection device 151 has a counter and a storage unit, and upon receiving a monitoring information packet from the monitoring device 111, acquires the monitoring information from the received monitoring information packet and acquires the count value of the counter as the reception time. After including the reception time in the monitoring information, the collection device 151 saves the monitoring information in a storage unit (not shown).

More specifically, the counter resets the count value at midnight every day, and increments the count value each time six seconds, which is the measurement period of the monitoring device 111, elapses. In this case, when the collecting device 151 receives a plurality of monitoring information packets from the plurality of monitoring devices 111 during the period of 6 seconds from the timing at which the count value is incremented, the collecting device 151 acquires Include the same current count value as the reception time in the monitoring information.

[Configuration of Power Generation Unit Relocation Operation Device 101]
FIG. 7 is a diagram showing the configuration of a power generation section rearrangement arithmetic device in the monitoring system according to the embodiment of the present invention.

Referring to FIG. 7 , power generation unit rearrangement arithmetic device 101 includes an input reception unit (position information acquisition unit) 81 , a classification unit (classification result acquisition unit) 82 , an arithmetic processing unit 83 , a communication processing unit 84 . , a storage unit 85 , an acquisition unit 86 , and a display control unit 87 .

(a) Input accepting unit and storage unit The input accepting unit 81 accepts, for example, the input of the ID of each monitoring device 111 in the monitoring system 301, that is, the monitoring device ID, and stores the monitoring device ID input by the user in the storage unit 85. save. In addition, the input receiving unit 81 receives an input of a correspondence relationship 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, and inputs by the user. The corresponding relationship R1 thus obtained is stored in the storage unit 85. FIG.

Further, the input reception unit 81 receives the ID of each power generation unit 78 included in the solar power generation system 401 (hereinafter also referred to as power generation unit ID), the positional relationship of each power generation unit 78, specifically the solar power generation system. An input of positional information indicating the connection relationship of the plurality of solar cell panels 79 included in 401 is received, and the positional information input by the user is stored in the storage unit 85 .

FIG. 8 is a diagram showing an example of the content of position information stored in a storage unit in the power generation unit rearrangement arithmetic device according to the embodiment of the present invention.

Referring to FIG. 8, the positional information is, for example, a position where each power generation unit 78 includes two rows of seven solar panels 79 connected in series along the east-west direction in the arrangement area EA. Indicates that they are arranged in a relationship.

(b) Communication Processing Unit and Acquisition Unit Referring to FIG. 7 again, communication processing unit 84 in power generation unit relocation arithmetic device 101 performs monitoring information collection processing at a specified processing timing, for example, at midnight every day. conduct. Note that when the power generation unit rearrangement arithmetic device 101 is incorporated in the collection device 151, monitoring information can be easily collected at shorter intervals.

More specifically, when the processing timing arrives, the communication processing unit 84 acquires each monitoring device ID registered in the storage unit 85, and the communication processing unit 84 acquires each monitoring device ID corresponding to the acquired monitoring device ID and 24 hours before the processing timing. to the processing timing to the collection device 151.

When the monitoring information request is received from the power generation unit relocation arithmetic device 101, the collection device 151 sends one or a plurality of pieces of monitoring information satisfying the content of the monitoring information request to the power generation unit relocation arithmetic device 101 according to the received monitoring information request. Send.

FIG. 9 is a diagram showing an example of monitoring information held by the power generation unit relocation arithmetic device in the monitoring system according to the embodiment of the present invention.

Referring to FIG. 9 , communication processing unit 84 outputs the received one or more pieces of monitoring information to acquiring unit 86 upon receiving one or more pieces of monitoring information from collection device 151 in response to the monitoring information request.

Acquisition unit 86 receives one or a plurality of pieces of monitoring information output from communication processing unit 84 , for example, stores each piece of monitoring information including the reception time in storage unit 85 , and sends a processing completion notification to classification unit 82 . Output. Specifically, the acquisition unit 86 stores the monitoring information including the monitoring device ID, current sensor ID, current value, generated power, voltage sensor ID, voltage value, and reception time in the storage unit 85 .

(c) Classification Unit Referring to FIG. 7 again, the classification unit 82 acquires classification result information indicating classification results of the plurality of power generation units 78 . More specifically, the classification unit 82 receives the processing completion notification output from the acquisition unit 86, and based on a plurality of pieces of monitoring information stored in the storage unit 85, for example, using k-means, determines the solar A plurality of power generation units 78 included in the photovoltaic power generation system 401 are classified into a plurality of groups G. As shown in FIG.

FIG. 10 is a diagram showing an example of a classification result of power generation units by the classification unit in the power generation unit rearrangement arithmetic device according to the embodiment of the present invention.

Referring to FIG. 10, classification unit 82 classifies a plurality of power generation units 78 in photovoltaic power generation system 401 into a plurality of groups G by, for example, time zones affected by shadows, and classification result information indicating the classification results. is output to the arithmetic processing unit 83 .

Specifically, the classification unit 82 divides the plurality of power generation units 78 in the photovoltaic power generation system 401 into a group G1 that tends to be affected by shadows in the morning time zone and a group G1 that tends to be affected by shadows in the afternoon time zone. They are classified into a group G2 that tends to be affected, a group G3 that tends to be affected by shade in the evening hours, and a group G4 that tends to be unaffected by shade throughout the day.

Note that the classification unit 82 is not limited to the configuration for classifying the plurality of power generation units 78 in the photovoltaic power generation system 401 into the plurality of groups G. For example, the user may classify a plurality of power generation units 78 into a plurality of groups G using a graph showing time-series changes in the power generated by each power generation unit 78 , and input the classification results to input reception unit 81 .

In this case, input accepting portion 81 stores, for example, classification result information indicating the classification result input by the user in storage portion 85 and outputs a saving completion notification to classification portion 82 . Then, the classification unit 82 receives the storage completion notification output from the input reception unit 81 , acquires the classification result information stored in the storage unit 85 , and outputs the acquired classification result information to the arithmetic processing unit 83 .

(d) Arithmetic Processing Unit and Display Control Unit The arithmetic processing unit 83 functions, for example, as an optimizer that performs optimization processing to realize more efficient power generation. More specifically, the arithmetic processing unit 83 receives the classification result information output from the classification unit 82, and based on the classification result information, determines the positional relationship of each power generation unit 78 in the solar power generation system 401, specifically creates candidate information indicating changes to the connection relationships of the plurality of solar panels 79 in the solar power generation system 401 . In addition, the change of the positional relationship of each power generation unit 78 is not limited to the change of the connection relationship of the plurality of solar cell panels 79. may be changed.

(d-1) Determining Whether to Generate Candidate Information Based on the trajectory of each of the groups G1 to G3, for example, each shape of the shadow that affects the output of the generated power is estimated.

Specifically, as shown in FIG. 10, the arithmetic processing unit 83 determines an area E1 defined by the plurality of power generation units 78 belonging to the group G1. Here, it is assumed that the area E1 is positioned at the east end of the placement area EA.

Group G1 is, as described above, a group of power generation units 78 that are affected by shadows in the morning time zone, ie, the time zone when the sun is located on the east side. For this reason, the arithmetic processing unit 83 determines that, for example, the shadow S1 corresponding to the group G1 is a shadow caused by sunlight striking an object such as a wall provided on the east side of the arrangement area EA from the east side, and the object It is estimated that it extends along the direction of extension, specifically the north-south direction.

The arithmetic processing unit 83 also estimates the shape of the shadow S2 corresponding to the group G2 and the shadow S3 corresponding to the group G3 by the same method. For example, the arithmetic processing unit 83 estimates that the shadow S2 corresponding to the group G2 extends along the east-west direction, and the shadow S3 corresponding to the group G3 extends along the north-south direction.

Arithmetic processing unit 83 determines whether or not to create candidate information based on the result of estimating the shape of shadow in each of groups G1 to G3.

Here, when the direction in which the shadows corresponding to a certain group G extend differs from the arrangement direction of the plurality of solar cell panels 79 in the group G, the percentage of the solar cell panels 79 in the group G that are shaded tends to be low. be. Therefore, by changing the positional relationship of each power generation unit 78 so that the number of power generation units 78 including one or more shaded solar cell panels 79 is minimized, efficient power generation can be realized.

On the other hand, when the direction in which the shadows corresponding to a certain group G extend is the same as the arrangement direction of the plurality of solar cell panels 79 in the group G, the ratio of the solar cell panels 79 in the group G that are shaded tends to be high. It is in. Therefore, by maintaining the positional relationship of each power generation unit 78 in the group G, efficient power generation can be realized in the photovoltaic power generation system 401 as a whole.

Specifically, the arithmetic processing unit 83 creates candidate information for the group G1 and the group G3 in which the corresponding shadow extends along the north-south direction, that is, along the direction different from the arrangement direction of the plurality of solar cell panels 79. to decide.

On the other hand, the arithmetic processing unit 83 determines not to create candidate information for the group G2 in which the corresponding shade extends in the east-west direction, that is, along the same direction as the arrangement direction of the plurality of solar cell panels 79 .

Note that if the shadows S1 to S3 corresponding to the groups G1 to G3, respectively, all extend along the east-west direction, the arithmetic processing unit 83 does not create candidate information for any of the groups G1 to G3. to decide.

(d-2) Creation of Candidate Information The arithmetic processing unit 83 selects a group G1 for which candidate information is to be created (hereinafter, also referred to as a “target group”), in order to achieve more efficient power generation. For example, the candidate information is created so that the power generated in the group G1, that is, the total sum of the power generated by the power generators 78 belonging to the group G1, is large.

Further, in order to realize more efficient power generation for the group G3, which is the target group, the arithmetic processing unit 83, for example, generates power in the group G3, that is, the total power generated by the power generation units 78 belonging to the group G3 is Create candidate information to be large.

More specifically, arithmetic processing unit 83 classifies the plurality of solar panels 79 in group G1 into a plurality of groups. Specifically, the arithmetic processing unit 83 is configured so that each set includes a string of 14 solar battery panels 79 and the number of sets including one or more solar battery panels 79 that are shaded is minimized. of solar panels 79 are sorted into a plurality of sets.

FIG. 11 is a diagram showing an example of candidate information created by the arithmetic processing unit in the power generation unit relocation arithmetic device according to the embodiment of the present invention.

10 and 11, here, before the positional relationship of each power generation unit 78 is changed, the group G1 includes 10 power generation units 78, that is, 140 (=14×10). of solar panels 79 are included. In this case, the arithmetic processing unit 83 classifies the 140 solar cell panels 79 into ten groups A1 to A10, as shown in FIG.

For example, the arithmetic processing unit 83 classifies a plurality of solar cell panels 79 that are shaded into group A1 or group A2, and classifies other solar cell panels 79 that are not shaded into one of groups A3 to A10. do.

Similarly, if there are 140 solar cell panels 79 in group G3, arithmetic processing unit 83 classifies 140 solar cell panels 79 into ten groups B1 to B10.

Then, the arithmetic processing unit 83 indicates the positional relationships of the sets A1 to A10 as the post-change positional relationships of the power generation units 78 belonging to the group G1, and the post-change positional relationships of the power generation units 78 belonging to the group G3. Candidate information indicating the positional relationship of B1 to B10 is created.

As a result, when the positional relationship of each power generation unit 78 belonging to each target group is changed according to the candidate information created by the arithmetic processing unit 83, two of the ten power generation units 78 in each target group 78 is affected by shadows, the remaining eight power generation units 78 can output generated power without being affected by shadows.

As a condition for classifying the plurality of solar panels 79 into a plurality of groups, the arithmetic processing unit 83 sets each group to include a string of 14 solar panels 79, and the solar panels 79 to be shaded. In addition to minimizing the number of sets containing one or more, still other conditions may apply.

For example, the arithmetic processing unit 83 may further add a condition that the length of the cable for connecting the plurality of solar panels 79 in series is the shortest. In this case, the arithmetic processing unit 83 includes, for example, the length of the cable in the changed positional relationship of the power generation units 78 in the candidate information.

(d-3) Calculation of predicted value of generated power Calculate the predicted value of power generation.

More specifically, the arithmetic processing unit 83 acquires the measured value of the generated power of the group G other than the target group, for example, the group G4 which is not affected by all-day shade, and based on the acquired measured value, the candidate information is displayed. A predicted value of the generated power of the group G1 and a predicted value of the generated power of the group G3 in the changed positional relationship are calculated.

Specifically, it is assumed that 20 power generation units 78 belong to group G4. In this case, the arithmetic processing unit 83 calculates the measured value PG1 of the generated power for one year in the group G1 including the ten power generation units 78, and PG4 which is half the measured value of the generated power in the group G4 for one year. , the difference D (=PG4-PG1) is calculated.

Further, since the number of power generation units 78 affected by the shadow is reduced from 10 to 2 in the positional relationship after the change of the power generation units 78 in the group G1, the calculation processing unit 83 calculates the predicted value of the generated power as PG1+D× Calculate (10-2)/10.

Further, the arithmetic processing unit 83 calculates the predicted value of the generated power in the group G3 in the changed positional relationship of the power generation units 78 by the same method.

Then, arithmetic processing unit 83 outputs to display control unit 87 the created candidate information, the calculated predicted value of generated power in group G1, and the predicted value information indicating the calculated predicted value of generated power in group G3.

The display control unit 87 receives the candidate information and the predicted value information output from the arithmetic processing unit 83, and displays the positional relationship of the power generation units 78 indicated by the candidate information and the generated power of each target group indicated by the predicted value information. is displayed on a monitor (not shown), for example.

Accordingly, the user can easily grasp the candidates for the positional relationship of the power generation units 78 and the predicted value of the generated power in the changed positional relationship by checking the contents displayed on the monitor. Then, the user compares, for example, the construction cost required to change the positional relationship of each power generation unit 78 with the increase in power sales income due to the increase in generated power, and determines whether to change the positional relationship to that indicated by the candidate information. You can consider whether

Further, when the candidate information includes the length of the cable in the changed positional relationship of the power generation units 78, the display control unit 87 further adds the length of the cable in addition to the positional relationship indicated by the candidate information. may be controlled to display on the monitor. As a result, the user can decide whether or not to change the positional relationship of each power generation unit 78 in consideration of the cost required for the cable, in addition to the construction cost and electricity sales income associated with the change in the positional relationship of each power generation unit 78. can be considered.

Note that the display control unit 87 may transmit the candidate information and the predicted value information to a device other than the power generation unit rearrangement calculation device 101 via the communication processing unit 84 .

Further, the arithmetic processing unit 83 may be configured not to calculate the predicted value of the generated power in the target group in the changed positional relationship of the power generation units 78 .

Further, the classification unit 82 may classify the plurality of power generation units 78 by time periods affected by dust, for example, instead of by time periods affected by shadows. In this case, the arithmetic processing unit 83 selects a target group including a plurality of power generation units 78 affected by dust and the like, for example, each set includes a string of 14 solar panels 79 and is affected by dust and the like. Candidate information indicating changes in the positional relationship of each power generation unit 78 is created so that the number of sets including one or more solar panels 79 that receive the power is minimized.

<Flow of operation>
The power generation unit rearrangement arithmetic unit 101 includes a computer, and an arithmetic processing unit such as a CPU in the computer reads out a program including part or all of each step of the following flowchart from a memory (not shown) and executes it. The program for this device can be installed externally. The program of this device is distributed in a state stored in a recording medium.

FIG. 12 is a flow chart defining the operation procedure of the power generation section relocation arithmetic device according to the embodiment of the present invention.

Referring to FIGS. 7 and 12, first, input accepting portion 81 accepts input of positional information indicating the positional relationship of each power generating portion 78, and upon acquiring the positional information input by the user, stores the positional information. It saves in the unit 85 (step S11).

Next, the acquisition unit 86 receives one or a plurality of pieces of monitoring information transmitted from the collection device 151 via the communication processing unit 84, and stores the received monitoring information including the reception time in the storage unit 85. A processing completion notification is output to the classification unit 82 (step S12).

Next, the classification unit 82 receives the processing completion notification from the acquisition unit 86, and sorts the power generation units 78 in the photovoltaic power generation system 401 into groups based on the multiple pieces of monitoring information stored in the storage unit 85. Classify as G. Then, the classification unit 82 outputs classification result information indicating the classification result to the arithmetic processing unit 83 (step S13).

Next, the arithmetic processing unit 83 receives the classification result information from the classification unit 82, and based on the position information stored in the storage unit 85 and the classification result information, for each group G indicated by the classification result information, The shape of the shadow that affects the output of generated power is estimated (step S14).

Next, the arithmetic processing unit 83 determines whether or not to create candidate information for each group G based on the result of estimating the shape of the shadow. For example, if the direction in which the corresponding shadow extends differs from the arrangement direction of the plurality of solar cell panels 79 in at least one target group among the plurality of groups G, the arithmetic processing unit 83 performs It is decided to create candidate information (step S15).

Next, if arithmetic processing unit 83 determines to create candidate information for one or more target groups ("YES" in step S15), arithmetic processing unit 83 connects a plurality of solar panels 79 to a plurality of solar panels 79 for each target group. Classify into groups. Then, the arithmetic processing unit 83 creates candidate information indicating a plurality of sets of positional relationships as change contents of the positional relationships of the power generation units 78 (step S16).

Next, the arithmetic processing unit 83 calculates a predicted value of generated power in the changed positional relationship of each power generation unit 78 for each target group. Then, the arithmetic processing unit 83 outputs the created candidate information and the predicted value information indicating the calculated predicted value to the display control unit 87 (step S17).

Next, the display control unit 87 receives the candidate information and the predicted value information from the arithmetic processing unit 83, and receives the content of the candidate information, that is, the positional relationship of the power generation units 78 after the change indicated by the candidate information, and the prediction. Control is performed to display the predicted value of the generated power of each target group indicated by the value information on, for example, a monitor (not shown) (step S18).

On the other hand, in step S15, the arithmetic processing unit 83 determines that the candidate information It is decided not to create ("NO" in step S15).

By the way, when a plurality of solar cell panels included in the power generation unit are connected in series, if at least a part of each solar cell panel is shaded, the power generated by the solar cell panel that is not shaded is also shaded. It will be the same as the power generated by such a solar cell panel.

On the other hand, in the power generation unit rearrangement calculation device 101 according to the embodiment of the present invention, the input reception unit 81 acquires the position information indicating the positional relationship between the plurality of power generation units 78 each including the solar cell panel 79. . The classification unit 82 acquires the classification result of each power generation unit 78 into a plurality of groups G based on the measurement result of the output of each power generation unit 78 . Then, based on the position information acquired by the input reception unit 81 and the classification result acquired by the classification unit 82, the arithmetic processing unit 83 selects each group belonging to at least one target group among the plurality of groups G. It is possible to create candidate information indicating changes in the positional relationship of the power generation unit 78 .

In this way, the candidate information created by the power generation unit rearrangement calculation device 101 can be generated by the user by using the classification result of each power generation unit 78 based on the measurement result of the output of each power generation unit 78. By confirming the contents indicated by , a more appropriate positional relationship of the power generation units 78 belonging to the target group can be grasped.

Therefore, with the power generation unit relocation calculation device 101 according to the embodiment of the present invention, a more efficient photovoltaic power generation system 401 can be constructed.

Further, in the power generation unit relocation calculation device 101 according to the embodiment of the present invention, the calculation processing unit 83 calculates the measurement result of the output of each power generation unit 78 in a group G different from the target group among the plurality of groups G. is used to calculate the predicted value of the output of each power generation unit 78 in the target group in the changed positional relationship indicated by the candidate information.

In this way, with the configuration in which the predicted value is calculated using the measurement result of the output in the group G different from the target group, the user can check the predicted value calculated by the power generation unit rearrangement calculation device 101, for example , it is possible to consider whether or not to change the positional relationship indicated by the candidate information in consideration of the income from power sales associated with an increase in the output of the generated power in the target group.

Further, in the power generation unit rearrangement calculation device 101 according to the embodiment of the present invention, the calculation processing unit 83 creates candidate information such that the output of each power generation unit 78 in the target group is increased.

With such a configuration, it is possible to increase the output in the target group by changing the positional relationship of each power generation unit 78 according to the content indicated by the candidate information.

In addition, in the arithmetic processing method according to the embodiment of the present invention, first, the input reception unit 81 acquires position information indicating the positional relationship of each power generation unit 78 including the solar cell panel 79 . Next, the classification unit 82 acquires the classification result of each power generation unit 78 into a plurality of groups G based on the measurement result of the output of each power generation unit 78 . Next, based on the position information acquired by the input reception unit 81 and the classification result acquired by the classification unit 82, the arithmetic processing unit 83 determines whether the group belongs to at least one target group among the plurality of groups G. Candidate information indicating changes in the positional relationship of each power generation unit 78 is created.

In this way, by the method of creating candidate information using the classification results of each power generation unit 78 based on the measurement result of the output of each power generation unit 78, the user can By confirming the contents indicated by , a more appropriate positional relationship of the power generation units 78 belonging to the target group can be grasped.

Therefore, with the arithmetic processing method according to the embodiment of the present invention, a more efficient photovoltaic power generation system 401 can be constructed.

The above-described embodiments should be considered as illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all changes within the meaning and scope equivalent to the scope of the claims.

The above description includes the features appended below.
[Appendix 1]
a positional information acquiring unit for acquiring positional information indicating the positional relationship of each power generation unit including the solar cell panel;
a classification result acquisition unit that acquires a result of classifying each of the power generation units into a plurality of groups based on a measurement result of the output of each of the power generation units;
Each power generation unit belonging to at least one target group among the plurality of groups based on the position information acquired by the position information acquisition unit and the classification result acquired by the classification result acquisition unit and an arithmetic processing unit capable of creating candidate information indicating changes in the positional relationship of
The power generation unit is a string in which a plurality of the solar panels are connected in series,
The classification result acquisition unit classifies the plurality of power generation units into the plurality of groups according to time zones affected by shadows,
The arithmetic processing unit estimates the shape of the shadow for each of the groups, and determines whether or not to create the candidate information based on the estimation result of the shape of the shadow and the arrangement direction of the plurality of solar cell panels. decide and
The power generation unit rearrangement calculation device, wherein the candidate information indicates a connection relationship of the plurality of solar panels included in the target group.

1 output line 2,4,5 aggregate line 3 internal line 6 cubicle 7 copper bar 8 PCS
9 power conversion unit 11 detection processing unit 14 communication unit 16 current sensor 17 voltage sensor 26 power supply line 46 signal line 60 current collection unit 71 current collection box 72, 73, 77 copper bar 74 solar cell unit 76 connection box 78 power generation unit 79 sun Battery panel 80 PCS unit 81 Input reception unit (position information acquisition unit)
82 classification unit (classification measurement acquisition unit)
83 arithmetic processing unit 84 communication processing unit 85 storage unit 86 acquisition unit 87 display control unit 101 power generation unit relocation arithmetic device 111 monitoring device 121 weather information processing device 151 collection device 301 monitoring system 401 solar power generation system

Claims (4)

a position information acquiring unit that acquires position information indicating a positional relationship between a plurality of power generation units each including a plurality of solar panels connected in series;
a classification result acquisition unit that acquires a result of classifying each of the power generation units into a plurality of groups based on a measurement result of the output of each of the power generation units;
Each power generation unit belonging to at least one target group among the plurality of groups based on the position information acquired by the position information acquisition unit and the classification result acquired by the classification result acquisition unit and an arithmetic processing unit capable of creating candidate information indicating changes in the connection relationships of the plurality of solar panels included in the power generation unit rearrangement arithmetic unit. The arithmetic processing unit uses the measurement result of a group different from the target group among the plurality of groups to determine the measurement result of the target group in the connection relationship after the change indicated by the candidate information. 2. The power generation section rearrangement arithmetic device according to claim 1, which calculates a predicted value. 3. The power generation unit rearrangement arithmetic device according to claim 1, wherein said arithmetic processing unit creates said candidate information such that said measurement result in said target group is large. An arithmetic processing method in a power generation unit rearrangement arithmetic device, comprising:
a step of acquiring position information indicating a positional relationship between a plurality of power generation units each including a plurality of solar panels connected in series;
a step of obtaining a classification result of each of the power generation units into a plurality of groups based on the measurement result of the output of each of the power generation units;
Based on the acquired position information and the classification result, changes in the connection relationship of the plurality of solar panels included in each of the power generation units belonging to at least one target group out of the plurality of groups are determined. and creating candidate information to indicate.

Images