CN110601656A - Photovoltaic power generation fault monitoring system and method thereof - Google Patents
Photovoltaic power generation fault monitoring system and method thereof Download PDFInfo
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- CN110601656A CN110601656A CN201910704163.0A CN201910704163A CN110601656A CN 110601656 A CN110601656 A CN 110601656A CN 201910704163 A CN201910704163 A CN 201910704163A CN 110601656 A CN110601656 A CN 110601656A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 96
- 238000010248 power generation Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 60
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 11
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 12
- 238000009434 installation Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004092 self-diagnosis Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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- Photovoltaic Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a photovoltaic power generation fault monitoring system and a method thereof, wherein the system comprises: the fault monitoring terminal is arranged on the photovoltaic power generation device and used for detecting fault information on the photovoltaic power generation device in real time and sending the fault information to the data transmission terminal; the data transmission terminal is used for receiving fault information monitored by the fault monitoring terminals connected with the data transmission terminal and sending data of the fault monitoring terminals to the remote monitoring terminal; the remote monitoring terminal is used for receiving the fault information of the data transmission terminal connected with the remote monitoring terminal and analyzing and processing the fault information; the fault monitoring terminal is connected with the data transmission terminal through ZigBee. The invention realizes the functions of real-time online acquisition of fault information, short-distance wireless data transmission, data fusion, remote transmission monitoring and the like. The invention has the advantages of flexible network construction, high data transmission rate, convenient maintenance and the like.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation fault monitoring system and a method thereof.
Background
At present, a monitoring scheme of a photovoltaic power generation system is formed by utilizing a single chip microcomputer, RS485 and configuration software, so that the monitoring system is low in data transmission efficiency, few in accommodated nodes and high in subsequent maintenance cost.
The impact on the power grid can be effectively relieved by predicting the output power of the photovoltaic grid-connected power generation system, and meanwhile, power station management personnel can conveniently decide the power dispatching system, and the factors influencing the prediction of the output power of the photovoltaic power generation system are more, such as illumination intensity, temperature and humidity, sunshine duration and the like. The traditional prediction method mainly aims at the influence factors such as the illumination intensity, the environmental temperature and the like as research factors, and only single output power can be predicted by adopting the existing output power model.
Disclosure of Invention
The invention aims to provide a photovoltaic power generation fault monitoring system with high data transmission effect and multiple accommodating nodes and a monitoring method of a combined power prediction model.
The purpose of the invention is realized by the following technical scheme:
photovoltaic power generation fault monitoring system includes:
the fault monitoring terminal is arranged on the photovoltaic power generation device and used for detecting fault information on the photovoltaic power generation device in real time and sending the fault information to the data transmission terminal;
the data transmission terminal is used for receiving fault information monitored by the fault monitoring terminals connected with the data transmission terminal and sending data of the fault monitoring terminals to the remote monitoring terminal;
the remote monitoring terminal is used for receiving the fault information of the data transmission terminal connected with the remote monitoring terminal and analyzing and processing the fault information;
the fault monitoring terminal is connected with the data transmission terminal through ZigBee.
Furthermore, the fault monitoring terminal comprises a ZigBee communication module, a microprocessor and a sensor array;
the ZigBee communication module is used for realizing data transmission with a data transmission terminal;
the microprocessor is used for collecting fault information collected by the sensor array and controlling the ZigBee communication module to transmit the fault information;
the sensor array is used for collecting fault information, and the fault information comprises an inverter output end voltage signal, a combiner box temperature signal, a crystalline silicon solar cell temperature signal and a PV terminal voltage signal.
Further, the data transmission terminal comprises a ZigBee communication module and a data processing module;
the ZigBee communication module is used for connecting the ZigBee communication module and receiving fault information monitored by the fault monitoring terminal;
the data processing module is used for carrying out abnormity detection on the fault information and sending the data to the remote monitoring terminal after the data is arranged.
Further, the remote monitoring terminal is used for receiving the fault information, analyzing the fault information, performing remote control and responding to the alarm information.
Further, the analyzing of the fault information refers to fault analysis of the photovoltaic power generation device, and mainly includes comparing the fault information with historical data, calculating a characteristic value and an average value parameter, and determining whether the fault information meets a fluctuation trend or not to decide a fault problem of the photovoltaic power generation device by fitting fluctuation drive of the historical data.
Further, the remote monitoring terminal is communicated with the data transmission terminal through a Beidou satellite.
The invention also provides a photovoltaic power generation remote monitoring method, which comprises the following steps:
(1) acquiring fault information of the photovoltaic power generation device through a fault monitoring terminal;
(2) transmitting the fault information to a data transmission terminal in real time by using ZigBee;
(3) the data transmission terminal performs abnormity detection on the fault information and transmits the fault information to the remote monitoring terminal by using the Beidou satellite;
(4) and analyzing the fault information and the historical data of the photovoltaic power generation device through the remote monitoring terminal and giving an alarm.
The invention realizes the functions of real-time online acquisition of fault information, short-distance wireless data transmission, data fusion, remote transmission monitoring and the like. The invention has the advantages of flexible network construction, high data transmission rate, convenient maintenance and the like. The equipment operation and maintenance personnel can master the operation condition of the photovoltaic power station at any time by using the invention, thereby improving the flexibility and convenience of monitoring the photovoltaic power station.
Detailed Description
Example 1
The photovoltaic power generation fault monitoring system provided by the embodiment comprises a fault monitoring terminal, a data transmission terminal and a remote monitoring terminal.
The fault monitoring terminal is installed on the photovoltaic power generation device and used for detecting fault information on the photovoltaic power generation device in real time and sending the fault information to the data transmission terminal, and the fault information comprises an inverter output end voltage signal, a combiner box temperature signal, a crystalline silicon solar cell temperature signal and a PV terminal voltage signal. The voltage signal is collected by a mutual inductance voltage sensor, and the temperature signal is realized by a thermosensitive temperature sensor. The fault monitoring terminal comprises a ZigBee communication module, a microprocessor and a sensor array; the ZigBee communication module is used for realizing connection with a data transmission terminal and transmitting the acquired fault information to the data transmission terminal; the sensor array is used for collecting fault information. The microprocessor is used for collecting fault information collected by the sensor array and controlling the ZigBee communication module to transmit, formats can be unified during collection, and a unique code is attached, and can be coded into the serial number of the photovoltaic power generation device, so that the abnormality of which photovoltaic power generation device is specific can be conveniently obtained in subsequent alarm information.
The data transmission terminal is used for receiving fault information monitored by the fault monitoring terminals connected with the data transmission terminal and sending data of the fault monitoring terminals to the remote monitoring terminal; the specific installation position can be determined according to the position of the fault monitoring terminal connected with the data transmission terminal, and the photovoltaic power generation device is preferably installed at the position where the plurality of fault monitoring terminals can be connected, so that each photovoltaic power generation device can be monitored. The data transmission terminal comprises a ZigBee communication module and a data processing module; the ZigBee communication module is used for connecting the ZigBee communication module and receiving fault information monitored by the fault monitoring terminal; the data processing module is used for carrying out abnormity detection on fault information and transmitting the data to the remote monitoring terminal in a unified mode after arranging, the abnormity detection means that the detected voltage or current is abnormal, the detected voltage or current is larger than a maximum threshold value and smaller than a minimum threshold value, the photovoltaic power generation is considered to be abnormal if the abnormal voltage or current is abnormal, the abnormal information and the fault information can be arranged and transmitted to the remote monitoring terminal, and the unique position code is also sent and represents the position of the data transmission terminal. The position of the abnormal photovoltaic power generation device can be accurately found through the position code processed by the field terminal and the code of the fault monitoring terminal.
The remote monitoring terminal is used for receiving the fault information of the data transmission terminal connected with the remote monitoring terminal and analyzing and processing the fault information. The remote monitoring terminal can be realized by a cloud computing server or a physical server, and is mainly used for receiving fault information, analyzing the fault information, remotely controlling and responding to alarm information, storing the fault information received each time and forming a historical database. Specifically, the analyzing of the fault information refers to fault analysis of the photovoltaic power generation device, and mainly includes comparing the fault information with historical data, calculating a characteristic value and an average value parameter, and determining whether the fault information meets a fluctuation trend to decide a fault problem of the photovoltaic power generation device by fitting fluctuation drive of the historical data.
The remote monitoring terminal and the data transmission terminal are communicated through the Beidou satellite, and the collected measurement and control signals are sent to the remote monitoring terminal through the Beidou satellite, so that the self-diagnosis capability of the photovoltaic array in remote high-altitude and desert areas is ensured, the number of the data transmission terminals is greatly reduced, the installation cost and the use and maintenance cost are reduced, and the operation is convenient. And then parameters such as characteristic values, average values and the like are calculated by comparing the fault information with the historical data, or the fluctuation trend of the historical data is calculated and fitted, and whether the detection signal conforms to the fluctuation trend is judged to decide the fault problem of the photovoltaic power generation device.
Example 2
The embodiment provides a photovoltaic power generation remote monitoring method, which comprises the following steps:
(1) acquiring fault information of the photovoltaic power generation device through a fault monitoring terminal; the fault monitoring terminal is installed on the photovoltaic power generation device and used for detecting fault information on the photovoltaic power generation device in real time and sending the fault information to the data transmission terminal, and the fault information comprises an inverter output end voltage signal, a combiner box temperature signal, a crystalline silicon solar cell temperature signal and a PV terminal voltage signal. The voltage signal is collected by a mutual inductance voltage sensor, and the temperature signal is realized by a thermosensitive temperature sensor. The fault monitoring terminal comprises a ZigBee communication module, a microprocessor and a sensor array; the ZigBee communication module is used for realizing connection with a data transmission terminal and transmitting the acquired fault information to the data transmission terminal; the sensor array is used for collecting fault information. The microprocessor is used for collecting fault information collected by the sensor array and controlling the ZigBee communication module to transmit, formats can be unified during collection, and a unique code is attached, and can be coded into the serial number of the photovoltaic power generation device, so that the abnormality of which photovoltaic power generation device is specific can be conveniently obtained in subsequent alarm information.
(2) Transmitting the fault information to a data transmission terminal in real time by using ZigBee; the data transmission terminal is used for receiving fault information monitored by the fault monitoring terminals connected with the data transmission terminal and sending data of the fault monitoring terminals to the remote monitoring terminal; the specific installation position can be determined according to the position of the fault monitoring terminal connected with the data transmission terminal, and the photovoltaic power generation device is preferably installed at the position where the plurality of fault monitoring terminals can be connected, so that each photovoltaic power generation device can be monitored. The data transmission terminal comprises a ZigBee communication module and a data processing module; the ZigBee communication module is used for connecting the ZigBee communication module and receiving fault information monitored by the fault monitoring terminal; the data processing module is used for carrying out abnormity detection on fault information and transmitting the data to the remote monitoring terminal in a unified mode after arranging, the abnormity detection means that the detected voltage or current is abnormal, the detected voltage or current is larger than a maximum threshold value and smaller than a minimum threshold value, the photovoltaic power generation is considered to be abnormal if the abnormal voltage or current is abnormal, the abnormal information and the fault information can be arranged and transmitted to the remote monitoring terminal, and the unique position code is also sent and represents the position of the data transmission terminal. The position of the abnormal photovoltaic power generation device can be accurately found through the position code processed by the field terminal and the code of the fault monitoring terminal.
(3) The data transmission terminal performs abnormity detection on the fault information and transmits the fault information to the remote monitoring terminal by using the Beidou satellite; the remote monitoring terminal is used for receiving the fault information of the data transmission terminal connected with the remote monitoring terminal and analyzing and processing the fault information. The remote monitoring terminal can be realized by a cloud computing server or a physical server, and is mainly used for receiving fault information, analyzing the fault information, remotely controlling and responding to alarm information, storing the fault information received each time and forming a historical database. Specifically, the analyzing of the fault information refers to fault analysis of the photovoltaic power generation device, and mainly includes comparing the fault information with historical data, calculating a characteristic value and an average value parameter, and determining whether the fault information meets a fluctuation trend to decide a fault problem of the photovoltaic power generation device by fitting fluctuation drive of the historical data.
(4) Analyzing the fault information and the historical data of the photovoltaic power generation device through the remote monitoring terminal and giving an alarm; the remote monitoring terminal and the data transmission terminal are communicated through the Beidou satellite, and the collected measurement and control signals are sent to the remote monitoring terminal through the Beidou satellite, so that the self-diagnosis capability of the photovoltaic array in remote high-altitude and desert areas is ensured, the number of the data transmission terminals is greatly reduced, the installation cost and the use and maintenance cost are reduced, and the operation is convenient. And then parameters such as characteristic values, average values and the like are calculated by comparing the fault information with the historical data, or the fluctuation trend of the historical data is calculated and fitted, and whether the detection signal conforms to the fluctuation trend is judged to decide the fault problem of the photovoltaic power generation device.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the scope of the present invention.
Claims (7)
1. Photovoltaic power generation fault monitoring system, its characterized in that includes:
the fault monitoring terminal is arranged on the photovoltaic power generation device and used for detecting fault information on the photovoltaic power generation device in real time and sending the fault information to the data transmission terminal;
the data transmission terminal is used for receiving fault information monitored by the fault monitoring terminals connected with the data transmission terminal and sending data of the fault monitoring terminals to the remote monitoring terminal;
the remote monitoring terminal is used for receiving the fault information of the data transmission terminal connected with the remote monitoring terminal and analyzing and processing the fault information;
the fault monitoring terminal is connected with the data transmission terminal through ZigBee.
2. The photovoltaic power generation fault monitoring system of claim 1, wherein: the fault monitoring terminal comprises a ZigBee communication module, a microprocessor and a sensor array;
the ZigBee communication module is used for realizing data transmission with a data transmission terminal;
the microprocessor is used for collecting fault information collected by the sensor array and controlling the ZigBee communication module to transmit the fault information;
the sensor array is used for collecting fault information, and the fault information comprises an inverter output end voltage signal, a combiner box temperature signal, a crystalline silicon solar cell temperature signal and a PV terminal voltage signal.
3. The photovoltaic power generation fault monitoring system of claim 2, wherein: the data transmission terminal comprises a ZigBee communication module and a data processing module;
the ZigBee communication module is used for connecting the ZigBee communication module and receiving fault information monitored by the fault monitoring terminal;
the data processing module is used for carrying out abnormity detection on the fault information and sending the data to the remote monitoring terminal after the data is arranged.
4. Photovoltaic power generation fault monitoring system according to claim 1 or 3, characterized in that: the remote monitoring terminal is used for receiving the fault information, analyzing the fault information, performing remote control and responding to the alarm information.
5. The photovoltaic power generation fault monitoring system of claim 4, wherein: the analysis of the fault information refers to the fault analysis of the photovoltaic power generation device, and mainly comprises the steps of comparing the fault information with historical data, calculating a characteristic value and an average value parameter, and judging whether the fault information accords with a fluctuation trend to decide the fault problem of the photovoltaic power generation device by fitting fluctuation drive of the historical data.
6. The photovoltaic power generation fault monitoring system of claim 4, wherein: the remote monitoring terminal is communicated with the data transmission terminal through a Beidou satellite.
7. The photovoltaic power generation remote monitoring method is characterized by comprising the following steps:
(1) acquiring fault information of the photovoltaic power generation device through a fault monitoring terminal;
(2) transmitting the fault information to a data transmission terminal in real time by using ZigBee;
(3) the data transmission terminal performs abnormity detection on the fault information and transmits the fault information to the remote monitoring terminal by using the Beidou satellite;
(4) and analyzing the fault information and the historical data of the photovoltaic power generation device through the remote monitoring terminal and giving an alarm.
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| CN114578765A (en) * | 2021-12-23 | 2022-06-03 | 上海华电奉贤热电有限公司 | AI multi-sensing technology-based active early warning system for safety production |
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Effective date of registration: 20220517 Address after: 710016 room 728-y007, the first building of laosanmiao, No. 2, Weiyang Road, Weiyang District, Xi'an City, Shaanxi Province Applicant after: Shaanxi zhongshineng Power Design Group Co.,Ltd. Address before: 610000 room 307, floor 3, unit 1, building 1, No. 356, Qingjiang East Road, Qingyang District, Chengdu, Sichuan Applicant before: Chengdu 368 Construction Engineering Co.,Ltd. |