CN117650630A - Photovoltaic power generation system - Google Patents
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- 230000002159 abnormal effect Effects 0.000 claims abstract description 63
- 238000012545 processing Methods 0.000 claims abstract description 34
- 238000012795 verification Methods 0.000 claims abstract description 18
- 230000005856 abnormality Effects 0.000 claims description 60
- 238000011156 evaluation Methods 0.000 claims description 47
- 230000007613 environmental effect Effects 0.000 claims description 42
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- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000012544 monitoring process Methods 0.000 claims description 18
- 230000005855 radiation Effects 0.000 claims description 13
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- 238000007781 pre-processing Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 8
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- 238000012935 Averaging Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 3
- 238000010606 normalization Methods 0.000 claims description 3
- 238000012549 training Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 abstract description 8
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- 239000008358 core component Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
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Abstract
The invention discloses a photovoltaic power generation system, which relates to the technical field of photovoltaic power generation, and the system is characterized in that when in operation, an operation collection module and an external environment module are used for collecting internal operation parameters and external environment parameters of a photovoltaic cell to form an operation data set and real-time environment data, a positioning module marks the monitored related data and the position information of the photovoltaic cell to form a positioning data set, a verification module is used for processing the operation data set and the real-time environment data set to form a first data set and a second data set, a battery overspeed operation model is established through a data processing module, and prediction and calculation are performed to obtain: and finally, the abnormal operation index Yxzs is integrated with a positioning data set to form a feedback notice by a feedback execution module to automatically detect and record the empty inspection period of the photovoltaic cell array.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation system.
Background
Solar photovoltaic power generation is an important form of renewable energy, has been widely used in the world, brings about revolutionary changes to the fields of power supply systems and distributed energy sources, and photovoltaic cell arrays are core components of the solar photovoltaic power generation systems, are key nodes for energy conversion and key driving forces in the whole system, and the performance of the photovoltaic cell arrays directly relates to power generation efficiency and system stability, and plays an important role in contributing power to the sustainable development of renewable energy sources.
The existing photovoltaic cell array monitoring system mainly relies on manual intervention, lacks intelligent monitoring and processing mechanisms, has defects in processing problems which are difficult to detect by manpower, comprises tiny data detail changes which possibly cause abnormal batteries, can be ignored, and can cause operation faults of the system due to delayed response because the problems are difficult to detect by manpower.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a photovoltaic power generation system, which solves the problems in the background art.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: a photovoltaic power generation system comprises an operation collection module, an external environment module, a positioning module, a verification module, a data processing module, an operation evaluation module and a feedback execution module;
the operation collection module acquires operation parameters of the photovoltaic cell through a current sensor group arranged in the photovoltaic cell to form an operation data set;
the external environment module acquires real-time environment data through an environment sensor group arranged outside the photovoltaic cell to form a real-time environment data group;
the positioning module marks the collected photovoltaic cells, and records the detected related data and the position information of the photovoltaic cells to form a positioning data set;
the verification module performs verification and preprocessing on the operation data set and the real-time environment data set to form a first data set and a second data set;
the data processing module establishes a battery overspeed operation model for the first data set and the second data set, predicts and calculates, and obtains: operational anomaly index Yxzs;
the running abnormality index Yxzs is obtained by the following formula:
Yxzs＝[(A*Yxxs)+(B*Hjxs)]+C；
wherein Yxxs represents the photovoltaic cell operation coefficient, hjxs represents the external environment coefficient, a and B represent the proportionality coefficients of the photovoltaic cell operation coefficient Yxxs and the external environment coefficient Hjxs, respectively, and C represents the first correction constant;
the photovoltaic cell operation coefficient Yxxs is obtained through calculation of a first data set and is compared with a preset photovoltaic cell threshold G to obtain a photovoltaic cell operation evaluation scheme;
the external environment coefficient Hjxs is obtained through calculation of a second data set and is compared with a preset environment threshold H to obtain an environment evaluation scheme;
the operation evaluation module is matched with the operation abnormality index Yxzs through an operation abnormality threshold Y preset by the system, and an abnormality level measure response scheme is obtained;
and the feedback execution module specifically executes the content of the abnormal level measure response scheme and integrates the abnormal level measure response scheme with the positioning data set to form a feedback notice.
Preferably, the operation collection module comprises an operation monitoring unit and an operation transmission unit;
the operation monitoring unit includes through the current sensor group that sets up inside photovoltaic cell: the current sensor, the temperature sensor, the voltage sensor, the power sensor, the illumination sensor and the charge state sensor are used for collecting relevant operation information of the photovoltaic cell to form an operation data set;
the operation transmission unit transmits the collected operation data group, including Ethernet, wireless network, internal software transmission and Bluetooth transmission.
Preferably, the external environment module comprises an environment monitoring unit and an environment communication unit;
the environment monitoring unit includes through the environment sensor group that sets up outside photovoltaic cell: the temperature sensor, the wind speed sensor, the humidity sensor and the barometric sensor are used for collecting real-time environment related information of the photovoltaic cell area to form a real-time environment data set;
the environment communication unit transmits the acquired real-time environment data set, including Ethernet, wireless network, internal software transmission and Bluetooth transmission.
Preferably, the positioning module comprises a marking unit and a recording unit;
the marking unit marks a plurality of photovoltaic cells in the photovoltaic cell array, and comprises row, column and group related information of the photovoltaic cells to form unique coordinate information of the photovoltaic cells;
the recording unit records the photovoltaic cell in detection, and comprises a detection result, a preprocessing operation, an operation parameter, an environmental parameter, an evaluation scheme and feedback information to form photovoltaic cell recording information;
the positioning data set includes: photovoltaic cell unique coordinate information and photovoltaic cell record information.
Preferably, the verification module comprises a verification unit and a preprocessing unit;
the checking unit checks the operation data set and the real-time environment data set, including detecting abnormal values, missing or incomplete data values, and performing averaging, removing and supplementing operations;
the preprocessing unit performs normalization processing on the checked operation data set and the real-time environment data set to enable the operation data set and the real-time environment data set to be in the same dimension, so as to form a first data set and a second data set;
the first data set includes: real-time current value Dlz, real-time voltage value Dyz, real-time charge value Dhz, output power value Glz, and photovoltaic temperature value Gfwd;
the second data set includes: an ambient temperature value Hjwd, an ambient humidity value Hjsd, an ambient wind speed value Hjfs, an ambient atmospheric pressure value Hjqy, and a solar radiation value Tyfs.
Preferably, the data processing module comprises a modeling unit and a calculating unit;
the modeling unit establishes a battery overspeed operation model for the first data set and the second data set through a polynomial regression model, and periodically increases model parameters, specifically: training by periodically increasing 50% of the numerical value of the model parameters, and further recording the battery overspeed operation model data when abnormality occurs;
the computing unit performs first computation on the first data set and the second data set to obtain: and (3) carrying out second calculation on the operation coefficient Yxxs of the photovoltaic cell and the external environment coefficient Hjxs to obtain: operational anomaly index Yxzs.
Preferably, the photovoltaic cell operation coefficient Yxxs is obtained by the following formula:
in the formula, the real-time current value Dlz is used for carrying out logarithmic operation, and the real-time voltage value Dyz, the real-time charge value Dhz, the output power value Glz and the photovoltaic temperature value Gfwd are subjected to squaring operation to obtain the representation value of fluctuation when the photovoltaic cell operates: the photovoltaic cell operating coefficient Yxxs, F represents a second correction constant;
meanwhile, comparing the obtained result with a preset photovoltaic cell threshold G to obtain a photovoltaic cell operation evaluation scheme:
the operation coefficient Yxxs of the photovoltaic cell is smaller than the threshold G of the photovoltaic cell, and the operation information of the photovoltaic cell is not abnormal;
the operation coefficient Yxxs of the photovoltaic cell is larger than or equal to the threshold G of the photovoltaic cell, the operation information of the photovoltaic cell is abnormal, the abnormal value exists among a real-time current value Dlz, a real-time voltage value Dyz, a real-time charge value Dhz, an output power value Glz and a photovoltaic temperature value Gfwd, and when the operation coefficient Yxxs of the photovoltaic cell is larger than or equal to the threshold G of the photovoltaic cell, the abnormal information of the photovoltaic cell is carried to trigger feedback notification.
Preferably, the external environment coefficient Hjxs is obtained by the following formula:
in the formula, the cube root operation is carried out through the environmental temperature value Hjwd and the environmental humidity value Hjsd, the logarithmic operation is carried out on the environmental atmospheric pressure value Hjqy, the calculation is carried out on the solar radiation value Tyfs and the environmental wind speed value Hjfs, and the environmental information influence value caused to the operation state of the photovoltaic cell is obtained: the external environment coefficient Hjxs, H represents a third correction constant;
meanwhile, comparing the environment evaluation result with a preset environment threshold H to obtain an environment evaluation scheme:
the external environment coefficient Hjxs is smaller than the environment threshold H, and the external environment information of the photovoltaic cell is not abnormal;
the external environment coefficient Hjxs is more than or equal to the environment threshold H, and the external environment information of the photovoltaic cell is abnormal, comprising: the environmental temperature value Hjwd, the environmental humidity value Hjsd, the environmental wind speed value Hjfs, the environmental atmospheric pressure value Hjqy and the solar radiation value Tyfs, and when the external environment coefficient Hjxs is more than or equal to twice the environmental threshold value H, the feedback notification is triggered by carrying the external environment abnormality information of the photovoltaic cell.
Preferably, the operation evaluation module comprises a storage unit and a matching unit;
the storage unit is used for a correlation scheme, a correlation threshold value and correlation notification information, and the correlation scheme comprises: storing a photovoltaic cell operation evaluation scheme, an environment evaluation scheme and an abnormal level measure response scheme, wherein the relevant thresholds comprise: photovoltaic cell threshold G, environmental threshold H, and operational anomaly threshold Y, the notification information includes: emergency notifiers, emergency notification departments, and notification modes;
the matching unit is matched with the running abnormality index Yxzs through a preset running abnormality threshold Y to obtain an abnormality level measure response scheme:
the operation abnormality index Yxzs is smaller than the operation abnormality threshold Y, and the operation state information of the photovoltaic cell or the environment information of the operation area of the photovoltaic cell is not abnormal;
the operation abnormality index Yxzs is more than or equal to the operation abnormality threshold Y, the operation state of the photovoltaic cell or the environment information of the operation area of the photovoltaic cell is abnormal, relevant processing personnel are notified, the record of relevant abnormal information and the processing suggestion of the abnormal information are provided, and the contents of the photovoltaic cell operation evaluation scheme and the environment evaluation scheme are integrated.
Preferably, the feedback execution module comprises a control unit and a notification unit;
the control unit performs specific execution according to the content of the abnormal level measure response scheme and the content of the positioning data set, and comprises the steps of adjusting the battery operation parameters, starting a standby system and sending an alarm notification;
the notification unit responds to the content of the scheme according to the abnormal level measure and integrates the content of the positioning data set, and the notification unit comprises: short messages, record broadcasting, internal software communication and emails, and notify related personnel and departments.
(III) beneficial effects
The invention provides a photovoltaic power generation system, which has the following beneficial effects:
(1) When the system operates, the operation collection module and the external environment module collect the internal operation parameters and the external environment parameters of the photovoltaic cells to form an operation data set and real-time environment data, the positioning module marks the monitored related data and the position information of the photovoltaic cells to form a positioning data set, the operation data set and the real-time environment data set are processed through the verification module to form a first data set and a second data set, and the data processing module establishes a battery overspeed operation model to predict and calculate to obtain: the operation abnormality indexes Yxzs are matched with an operation abnormality threshold Y preset by an operation evaluation module, an abnormality level measure response scheme is obtained, and finally, specific execution is carried out through a feedback execution module, and meanwhile, the operation abnormality indexes Yxzs are integrated with a positioning data set to form feedback notification, so that automatic detection and recording of the vacant period of the photovoltaic cell array, which is manually inspected once in a fixed period, are achieved, processing advice and notification of related personnel are provided for abnormality information, the photovoltaic cell array is adjusted at the first time when the abnormality information occurs, and the diffusion and the duration of the abnormality state are reduced as much as possible.
(2) Through a plurality of evaluation schemes of the photovoltaic cell operation evaluation scheme, the environment evaluation scheme and the abnormal level measure response scheme, a real-time feedback mechanism and a real-time processing mechanism are effectively formed for the operation state of the photovoltaic cell and the change of the environment of an operation area, processing suggestions for abnormal changes are synchronously provided for relevant staff to refer to and judge, the purpose of automatic monitoring and processing of the photovoltaic cell array in remote areas or inconvenient manual inspection is achieved, the frequency requirement of manual inspection and the cost of manpower and material resources are further reduced, and the working efficiency of inspection staff is improved.
Drawings
Fig. 1 is a block flow diagram of a photovoltaic power generation system according to the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.
Solar photovoltaic power generation is an important form of renewable energy, has been widely used in the world, brings about revolutionary changes to the fields of power supply systems and distributed energy sources, and photovoltaic cell arrays are core components of the solar photovoltaic power generation systems, are key nodes for energy conversion and key driving forces in the whole system, and the performance of the photovoltaic cell arrays directly relates to power generation efficiency and system stability, and plays an important role in contributing power to the sustainable development of renewable energy sources.
The existing photovoltaic cell array monitoring system mainly relies on manual intervention, lacks intelligent monitoring and processing mechanisms, has defects in processing problems which are difficult to detect by manpower, comprises tiny data detail changes which possibly cause abnormal batteries, can be ignored, and can cause operation faults of the system due to delayed response because the problems are difficult to detect by manpower.
Example 1
The invention provides a photovoltaic power generation system, please refer to fig. 1, which comprises an operation collection module, an external environment module, a positioning module, a verification module, a data processing module, an operation evaluation module and a feedback execution module;
the operation collection module acquires operation parameters of the photovoltaic cell through a current sensor group arranged in the photovoltaic cell to form an operation data set;
the external environment module acquires real-time environment data through an environment sensor group arranged outside the photovoltaic cell to form a real-time environment data group;
the positioning module marks the collected photovoltaic cells, and records the detected related data and the position information of the photovoltaic cells to form a positioning data set;
the verification module performs verification and preprocessing on the operation data set and the real-time environment data set to form a first data set and a second data set;
the data processing module establishes a battery overspeed operation model for the first data set and the second data set, predicts and calculates, and obtains: operational anomaly index Yxzs;
the running abnormality index Yxzs is obtained by the following formula:
Yxzs＝[(A*Yxxs)+(B*Hjxs)]+C；
wherein Yxxs represents the photovoltaic cell operation coefficient, hjxs represents the external environment coefficient, a and B represent the proportionality coefficients of the photovoltaic cell operation coefficient Yxxs and the external environment coefficient Hjxs, respectively, and C represents the first correction constant;
wherein A is more than or equal to 0.41 and less than or equal to 0.64,0.28, B is more than or equal to 0.36, and A+B is more than or equal to 1.0;
the photovoltaic cell operation coefficient Yxxs is obtained through calculation of a first data set and is compared with a preset photovoltaic cell threshold G to obtain a photovoltaic cell operation evaluation scheme;
the external environment coefficient Hjxs is obtained through calculation of a second data set and is compared with a preset environment threshold H to obtain an environment evaluation scheme;
the operation evaluation module is matched with the operation abnormality index Yxzs through an operation abnormality threshold Y preset by the system, and an abnormality level measure response scheme is obtained;
and the feedback execution module specifically executes the content of the abnormal level measure response scheme and integrates the abnormal level measure response scheme with the positioning data set to form a feedback notice.
In this embodiment, the operation collection module and the external environment module collect the internal operation parameters and the external environment parameters of the photovoltaic cell to form an operation data set and real-time environment data, the positioning module marks the monitored related data and the position information of the photovoltaic cell to form a positioning data set, the operation data set and the real-time environment data set are processed by the verification module to form a first data set and a second data set, and the data processing module establishes a battery overspeed operation model to predict and calculate, so as to obtain: the operation abnormality indexes Yxzs are matched with an operation abnormality threshold Y preset by an operation evaluation module, an abnormality level measure response scheme is obtained, and finally, specific execution is carried out through a feedback execution module, and meanwhile, the operation abnormality indexes Yxzs are integrated with a positioning data set to form feedback notification, so that automatic detection and recording of the vacant period of the photovoltaic cell array, which is manually inspected once in a fixed period, are achieved, processing advice and notification of related personnel are provided for abnormality information, the photovoltaic cell array is adjusted at the first time when the abnormality information occurs, and the diffusion and the duration of the abnormality state are reduced as much as possible.
Example 2
This embodiment is explained in embodiment 1, please refer to fig. 1, specifically: the operation collection module comprises an operation monitoring unit and an operation transmission unit;
the operation monitoring unit includes through the current sensor group that sets up inside photovoltaic cell: the current sensor, the temperature sensor, the voltage sensor, the power sensor, the illumination sensor and the charge state sensor are used for collecting relevant operation information of the photovoltaic cell to form an operation data set;
the operation transmission unit transmits the collected operation data group, including Ethernet, wireless network, internal software transmission and Bluetooth transmission.
The external environment module comprises an environment monitoring unit and an environment communication unit;
the environment monitoring unit includes through the environment sensor group that sets up outside photovoltaic cell: the temperature sensor, the wind speed sensor, the humidity sensor and the barometric sensor are used for collecting real-time environment related information of the photovoltaic cell area to form a real-time environment data set;
the environment communication unit transmits the acquired real-time environment data set, including Ethernet, wireless network, internal software transmission and Bluetooth transmission.
The positioning module comprises a marking unit and a recording unit;
the marking unit marks a plurality of photovoltaic cells in the photovoltaic cell array, and comprises row, column and group related information of the photovoltaic cells to form unique coordinate information of the photovoltaic cells;
the recording unit records the photovoltaic cell in detection, and comprises a detection result, a preprocessing operation, an operation parameter, an environmental parameter, an evaluation scheme and feedback information to form photovoltaic cell recording information;
the positioning data set includes: photovoltaic cell unique coordinate information and photovoltaic cell record information.
The verification module comprises a verification unit and a preprocessing unit;
the checking unit checks the operation data set and the real-time environment data set, including detecting abnormal values, missing or incomplete data values, and performing averaging, removing and supplementing operations;
averaging: replacing the outliers with the data of adjacent time points or the average value of the whole data;
and (3) removing: deleting the detected abnormal value from the data set, and not participating in subsequent modeling and analysis;
supplementing: supplementing the data missing position by using an interpolation method, including linear interpolation and polynomial interpolation;
the preprocessing unit performs normalization processing on the checked operation data set and the real-time environment data set to enable the operation data set and the real-time environment data set to be in the same dimension, so as to form a first data set and a second data set;
the first data set includes: real-time current value Dlz, real-time voltage value Dyz, real-time charge value Dhz, output power value Glz, and photovoltaic temperature value Gfwd;
the second data set includes: an ambient temperature value Hjwd, an ambient humidity value Hjsd, an ambient wind speed value Hjfs, an ambient atmospheric pressure value Hjqy, and a solar radiation value Tyfs;
solar radiation value Tyfs: the irradiation intensity of solar radiation to a certain area is reflected.
Example 3
This embodiment is explained in embodiment 1, please refer to fig. 1, specifically: the data processing module comprises a modeling unit and a calculating unit;
the modeling unit establishes a battery overspeed operation model for the first data set and the second data set through a polynomial regression model, and periodically increases model parameters, specifically: training by periodically increasing 50% of the numerical value of the model parameters, and further recording the battery overspeed operation model data when abnormality occurs;
the computing unit performs first computation on the first data set and the second data set to obtain: and (3) carrying out second calculation on the operation coefficient Yxxs of the photovoltaic cell and the external environment coefficient Hjxs to obtain: operational anomaly index Yxzs.
The operating coefficient Yxxs of the photovoltaic cell is obtained by the following formula:
in the formula, the real-time current value Dlz is used for carrying out logarithmic operation, and the real-time voltage value Dyz, the real-time charge value Dhz, the output power value Glz and the photovoltaic temperature value Gfwd are subjected to squaring operation to obtain the representation value of fluctuation when the photovoltaic cell operates: the photovoltaic cell operating coefficient Yxxs, F represents a second correction constant;
meanwhile, comparing the obtained result with a preset photovoltaic cell threshold G to obtain a photovoltaic cell operation evaluation scheme:
the operation coefficient Yxxs of the photovoltaic cell is smaller than the threshold G of the photovoltaic cell, and the operation information of the photovoltaic cell is not abnormal;
the operation coefficient Yxxs of the photovoltaic cell is larger than or equal to the threshold G of the photovoltaic cell, the operation information of the photovoltaic cell is abnormal, the abnormal value exists among a real-time current value Dlz, a real-time voltage value Dyz, a real-time charge value Dhz, an output power value Glz and a photovoltaic temperature value Gfwd, and when the operation coefficient Yxxs of the photovoltaic cell is larger than or equal to the threshold G of the photovoltaic cell, the abnormal information of the photovoltaic cell is carried to trigger feedback notification.
The external environment coefficient Hjxs is obtained by the following formula:
in the formula, the cube root operation is carried out through the environmental temperature value Hjwd and the environmental humidity value Hjsd, the logarithmic operation is carried out on the environmental atmospheric pressure value Hjqy, the calculation is carried out on the solar radiation value Tyfs and the environmental wind speed value Hjfs, and the environmental information influence value caused to the operation state of the photovoltaic cell is obtained: the external environment coefficient Hjxs, H represents a third correction constant;
meanwhile, comparing the environment evaluation result with a preset environment threshold H to obtain an environment evaluation scheme:
the external environment coefficient Hjxs is smaller than the environment threshold H, and the external environment information of the photovoltaic cell is not abnormal;
the external environment coefficient Hjxs is more than or equal to the environment threshold H, and the external environment information of the photovoltaic cell is abnormal, comprising: the environmental temperature value Hjwd, the environmental humidity value Hjsd, the environmental wind speed value Hjfs, the environmental atmospheric pressure value Hjqy and the solar radiation value Tyfs, and when the external environment coefficient Hjxs is more than or equal to twice the environmental threshold value H, the feedback notification is triggered by carrying the external environment abnormality information of the photovoltaic cell.
The operation evaluation module comprises a storage unit and a matching unit;
the storage unit is used for a correlation scheme, a correlation threshold value and correlation notification information, and the correlation scheme comprises: storing a photovoltaic cell operation evaluation scheme, an environment evaluation scheme and an abnormal level measure response scheme, wherein the relevant thresholds comprise: photovoltaic cell threshold G, environmental threshold H, and operational anomaly threshold Y, the notification information includes: emergency notifiers, emergency notification departments, and notification modes;
the matching unit is matched with the running abnormality index Yxzs through a preset running abnormality threshold Y to obtain an abnormality level measure response scheme:
the operation abnormality index Yxzs is smaller than the operation abnormality threshold Y, and the operation state information of the photovoltaic cell or the environment information of the operation area of the photovoltaic cell is not abnormal;
the operation abnormality index Yxzs is more than or equal to the operation abnormality threshold Y, the operation state of the photovoltaic cell or the environment information of the operation area of the photovoltaic cell is abnormal, the related processing personnel are notified, the record of the related abnormality information and the processing suggestion of the abnormality information are provided, the contents of the operation evaluation scheme and the environment evaluation scheme of the photovoltaic cell are integrated, and corresponding measures are taken for the abnormal situation, and the method comprises the following steps: adjusting the power generation power, adjusting the temperature control and local isolation;
adjusting the power generation power: the power generation power distribution of the photovoltaic cell array is regulated, and the influence of abnormal photovoltaic cells on the whole power generation efficiency is reduced by regulating the output power of each photovoltaic cell;
and (3) adjusting temperature control: starting a temperature control strategy, and reducing the temperature of the abnormal photovoltaic cell through a fan or cooling equipment to prevent the performance of the power generation efficiency of the photovoltaic cell from being reduced or the temperature from being increased by aggravation;
local isolation: and carrying out local isolation or bypass on the photovoltaic cells with the duration exceeding twenty-four hours when abnormal conditions occur, so that the influence on other photovoltaic cells is reduced as much as possible, and the abnormal photovoltaic cells are connected or realized by cutting off the current.
The feedback execution module comprises a control unit and a notification unit;
the control unit performs specific execution according to the content of the abnormal level measure response scheme and the content of the positioning data set, and comprises the steps of adjusting the battery operation parameters, starting a standby system and sending an alarm notification;
the notification unit responds to the content of the scheme according to the abnormal level measure and integrates the content of the positioning data set, and the notification unit comprises: short messages, record broadcasting, internal software communication and emails, and notify related personnel and departments.
In the embodiment, through a plurality of evaluation schemes of the photovoltaic cell operation evaluation scheme, the environment evaluation scheme and the abnormal level measure response scheme, a real-time feedback mechanism and a real-time processing mechanism are effectively formed for the operation state of the photovoltaic cell and the change of the environment of an operation area, processing suggestions for the abnormal change are synchronously provided, related staff refer to the abnormal change for carrying out and judging, the purpose of automatic monitoring and processing on the photovoltaic cell array in remote areas or inconvenient manual inspection is achieved, the frequency requirement of manual inspection and the cost of manpower and material resources are further reduced, and the working efficiency of inspection staff is improved.
Specific examples: specific examples: a photovoltaic power generation system used by a certain photovoltaic power generation inspection department will use specific parameters and values to demonstrate how to calculate: the photovoltaic cell operation coefficient Yxxs, the photovoltaic cell operation coefficient Yxxs and the external environment coefficient Hjxs;
the following calculation result takes the last decimal point;
assume that the following parameter values are owned:
the first data set includes: real-time current value Dlz: 10. real-time voltage value Dyz: 5. real-time charge value Dhz: 2. output power value Glz:50 and photovoltaic temperature value Gfwd:20 ℃;
the second data set includes: ambient temperature value Hjwd: 25. environmental humidity value Hjsd: 90. ambient wind speed value Hjfs: 3. ambient atmospheric pressure value Hjqy:1050 and solar radiation value Tyfs:800;
second correction constant F:0.16;
obtaining according to a calculation formula of the operation coefficient Yxxs of the photovoltaic cell:
setting a photovoltaic cell threshold G to be 5, comparing the photovoltaic cell threshold G with a photovoltaic cell operation coefficient Yxxs, and obtaining: the operation coefficient Yxxs of the photovoltaic cell is smaller than the threshold G of the photovoltaic cell, and the operation information of the photovoltaic cell is not abnormal;
third correction constant H:0.08;
obtaining according to a calculation formula of an external environment coefficient Hjxs:
setting the environment threshold H to 5, and acquiring the environment threshold H and the external environment coefficient Hjxs: the external environment coefficient Hjxs is more than or equal to the environment threshold H, and the external environment information of the photovoltaic cell is abnormal, comprising: the environmental temperature value Hjwd, the environmental humidity value Hjsd, the environmental wind speed value Hjfs, the environmental atmospheric pressure value Hjqy and the solar radiation value Tyfs, and when the external environment coefficient Hjxs is more than or equal to twice the environmental threshold value H, the feedback notification is triggered by carrying the external environment abnormality information of the photovoltaic cell.
First correction constant C:0.01, scaling factor: a:0.53 and B:0.34;
obtaining according to a calculation formula of the operational anomaly index Yxzs:
Yxsz＝[(0.53*2.5)+(0.34*5.2)]+0.01＝3.1；
setting the running abnormality index Yxzs to 5, and comparing with the running abnormality index Yxzs to obtain: the operation abnormality index Yxzs is less than the operation abnormality threshold Y, and the operation state information of the photovoltaic cell or the operation area environment information of the photovoltaic cell is not abnormal.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A photovoltaic power generation system, characterized in that: the system comprises an operation collection module, an external environment module, a positioning module, a verification module, a data processing module, an operation evaluation module and a feedback execution module;
the operation collection module acquires operation parameters of the photovoltaic cell through a current sensor group arranged in the photovoltaic cell to form an operation data set;
the external environment module acquires real-time environment data through an environment sensor group arranged outside the photovoltaic cell to form a real-time environment data group;
the positioning module marks the collected photovoltaic cells, and records the detected related data and the position information of the photovoltaic cells to form a positioning data set;
the verification module performs verification and preprocessing on the operation data set and the real-time environment data set to form a first data set and a second data set;
the data processing module establishes a battery overspeed operation model for the first data set and the second data set, predicts and calculates, and obtains: operational anomaly index Yxzs;
the running abnormality index Yxzs is obtained by the following formula:
Yxzs＝[(A*Yxxs)+(B*Hjxs)]+C；
wherein Yxxs represents the photovoltaic cell operation coefficient, hjxs represents the external environment coefficient, a and B represent the proportionality coefficients of the photovoltaic cell operation coefficient Yxxs and the external environment coefficient Hjxs, respectively, and C represents the first correction constant;
the photovoltaic cell operation coefficient Yxxs is obtained through calculation of a first data set and is compared with a preset photovoltaic cell threshold G to obtain a photovoltaic cell operation evaluation scheme;
the external environment coefficient Hjxs is obtained through calculation of a second data set and is compared with a preset environment threshold H to obtain an environment evaluation scheme;
the operation evaluation module is matched with the operation abnormality index Yxzs through an operation abnormality threshold Y preset by the system, and an abnormality level measure response scheme is obtained;
and the feedback execution module specifically executes the content of the abnormal level measure response scheme and integrates the abnormal level measure response scheme with the positioning data set to form a feedback notice.
2. A photovoltaic power generation system according to claim 1, characterized in that: the operation collection module comprises an operation monitoring unit and an operation transmission unit;
the operation monitoring unit includes through the current sensor group that sets up inside photovoltaic cell: the current sensor, the temperature sensor, the voltage sensor, the power sensor, the illumination sensor and the charge state sensor are used for collecting relevant operation information of the photovoltaic cell to form an operation data set;
the operation transmission unit transmits the collected operation data group, including Ethernet, wireless network, internal software transmission and Bluetooth transmission.
3. A photovoltaic power generation system according to claim 1, characterized in that: the external environment module comprises an environment monitoring unit and an environment communication unit;
the environment monitoring unit includes through the environment sensor group that sets up outside photovoltaic cell: the temperature sensor, the wind speed sensor, the humidity sensor and the barometric sensor are used for collecting real-time environment related information of the photovoltaic cell area to form a real-time environment data set;
the environment communication unit transmits the acquired real-time environment data set, including Ethernet, wireless network, internal software transmission and Bluetooth transmission.
4. A photovoltaic power generation system according to claim 1, characterized in that: the positioning module comprises a marking unit and a recording unit;
the marking unit marks a plurality of photovoltaic cells in the photovoltaic cell array, and comprises row, column and group related information of the photovoltaic cells to form unique coordinate information of the photovoltaic cells;
the recording unit records the photovoltaic cell in detection, and comprises a detection result, a preprocessing operation, an operation parameter, an environmental parameter, an evaluation scheme and feedback information to form photovoltaic cell recording information;
the positioning data set includes: photovoltaic cell unique coordinate information and photovoltaic cell record information.
5. A photovoltaic power generation system according to claim 1, characterized in that: the verification module comprises a verification unit and a preprocessing unit;
the checking unit checks the operation data set and the real-time environment data set, including detecting abnormal values, missing or incomplete data values, and performing averaging, removing and supplementing operations;
the preprocessing unit performs normalization processing on the checked operation data set and the real-time environment data set to enable the operation data set and the real-time environment data set to be in the same dimension, so as to form a first data set and a second data set;
the first data set includes: real-time current value Dlz, real-time voltage value Dyz, real-time charge value Dhz, output power value Glz, and photovoltaic temperature value Gfwd;
the second data set includes: an ambient temperature value Hjwd, an ambient humidity value Hjsd, an ambient wind speed value Hjfs, an ambient atmospheric pressure value Hjqy, and a solar radiation value Tyfs.
6. A photovoltaic power generation system according to claim 1, characterized in that: the data processing module comprises a modeling unit and a calculating unit;
the modeling unit establishes a battery overspeed operation model for the first data set and the second data set through a polynomial regression model, and periodically increases model parameters, specifically: training by periodically increasing 50% of the numerical value of the model parameters, and further recording the battery overspeed operation model data when abnormality occurs;
the computing unit performs first computation on the first data set and the second data set to obtain: and (3) carrying out second calculation on the operation coefficient Yxxs of the photovoltaic cell and the external environment coefficient Hjxs to obtain: operational anomaly index Yxzs.
7. A photovoltaic power generation system according to claim 1, characterized in that: the operating coefficient Yxxs of the photovoltaic cell is obtained by the following formula:
in the formula, the real-time current value Dlz is used for carrying out logarithmic operation, and the real-time voltage value Dyz, the real-time charge value Dhz, the output power value Glz and the photovoltaic temperature value Gfwd are subjected to squaring operation to obtain the representation value of fluctuation when the photovoltaic cell operates: the photovoltaic cell operating coefficient Yxxs, F represents a second correction constant;
meanwhile, comparing the obtained result with a preset photovoltaic cell threshold G to obtain a photovoltaic cell operation evaluation scheme:
the operation coefficient Yxxs of the photovoltaic cell is smaller than the threshold G of the photovoltaic cell, and the operation information of the photovoltaic cell is not abnormal;
the operation coefficient Yxxs of the photovoltaic cell is larger than or equal to the threshold G of the photovoltaic cell, the operation information of the photovoltaic cell is abnormal, the abnormal value exists among a real-time current value Dlz, a real-time voltage value Dyz, a real-time charge value Dhz, an output power value Glz and a photovoltaic temperature value Gfwd, and when the operation coefficient Yxxs of the photovoltaic cell is larger than or equal to the threshold G of the photovoltaic cell, the abnormal information of the photovoltaic cell is carried to trigger feedback notification.
8. A photovoltaic power generation system according to claim 1, characterized in that: the external environment coefficient Hjxs is obtained by the following formula:
in the formula, the cube root operation is carried out through the environmental temperature value Hjwd and the environmental humidity value Hjsd, the logarithmic operation is carried out on the environmental atmospheric pressure value Hjqy, the calculation is carried out on the solar radiation value Tyfs and the environmental wind speed value Hjfs, and the environmental information influence value caused to the operation state of the photovoltaic cell is obtained: the external environment coefficient Hjxs, H represents a third correction constant;
meanwhile, comparing the environment evaluation result with a preset environment threshold H to obtain an environment evaluation scheme:
the external environment coefficient Hjxs is smaller than the environment threshold H, and the external environment information of the photovoltaic cell is not abnormal;
the external environment coefficient Hjxs is more than or equal to the environment threshold H, and the external environment information of the photovoltaic cell is abnormal, comprising: the environmental temperature value Hjwd, the environmental humidity value Hjsd, the environmental wind speed value Hjfs, the environmental atmospheric pressure value Hjqy and the solar radiation value Tyfs, and when the external environment coefficient Hjxs is more than or equal to twice the environmental threshold value H, the feedback notification is triggered by carrying the external environment abnormality information of the photovoltaic cell.
9. The photovoltaic power generation system of claim 4, wherein: the operation evaluation module comprises a storage unit and a matching unit;
the storage unit is used for a correlation scheme, a correlation threshold value and correlation notification information, and the correlation scheme comprises: storing a photovoltaic cell operation evaluation scheme, an environment evaluation scheme and an abnormal level measure response scheme, wherein the relevant thresholds comprise: photovoltaic cell threshold G, environmental threshold H, and operational anomaly threshold Y, the notification information includes: emergency notifiers, emergency notification departments, and notification modes;
the matching unit is matched with the running abnormality index Yxzs through a preset running abnormality threshold Y to obtain an abnormality level measure response scheme:
the operation abnormality index Yxzs is smaller than the operation abnormality threshold Y, and the operation state information of the photovoltaic cell or the environment information of the operation area of the photovoltaic cell is not abnormal;
the operation abnormality index Yxzs is more than or equal to the operation abnormality threshold Y, the operation state of the photovoltaic cell or the environment information of the operation area of the photovoltaic cell is abnormal, relevant processing personnel are notified, the record of relevant abnormal information and the processing suggestion of the abnormal information are provided, and the contents of the photovoltaic cell operation evaluation scheme and the environment evaluation scheme are integrated.
10. A photovoltaic power generation system according to claim 9, characterized in that: the feedback execution module comprises a control unit and a notification unit;
the control unit performs specific execution according to the content of the abnormal level measure response scheme and the content of the positioning data set, and comprises the steps of adjusting the battery operation parameters, starting a standby system and sending an alarm notification;
the notification unit responds to the content of the scheme according to the abnormal level measure and integrates the content of the positioning data set, and the notification unit comprises: short messages, record broadcasting, internal software communication and emails, and notify related personnel and departments.
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