CN110661487A - Photovoltaic power generation monitoring management system - Google Patents
Photovoltaic power generation monitoring management system Download PDFInfo
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- CN110661487A CN110661487A CN201910827259.6A CN201910827259A CN110661487A CN 110661487 A CN110661487 A CN 110661487A CN 201910827259 A CN201910827259 A CN 201910827259A CN 110661487 A CN110661487 A CN 110661487A
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- power generation
- photovoltaic power
- leakage
- detector
- controller
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- 238000010248 power generation Methods 0.000 title claims abstract description 71
- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- 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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
-
- 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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/32—Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
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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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The invention discloses a photovoltaic power generation monitoring and management system, which comprises a photovoltaic power generation assembly, a detection assembly and a control assembly, wherein the detection assembly is used for detecting the temperature, the electric leakage, the current and the voltage of the photovoltaic power generation assembly; set up current detector and transmission cable through the output at the dc-to-ac converter, transmission cable's output sets up the leakage detector, when the leakage detector detects out leakage data, compare the data that the leakage detector detected and current detector's data, if the error between the two is in transmission cable's transportation loss error, it is normal to show transmission cable, produce the electric leakage between the components and parts between the photovoltaic power generation subassembly, otherwise if the error between the two is outside transmission cable's transportation loss, show that transmission cable goes wrong, overhaul the transmission cable and change can, it indicates all normally not to detect out leakage data when the leakage detector.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation monitoring and management system.
Background
Photovoltaic power generation is a technology for directly converting light energy into electric energy by utilizing the photovoltaic effect of a semiconductor interface, mainly comprises a solar panel (assembly), a controller and an inverter, and the main components comprise electronic components. The solar cells are connected in series and then are packaged and protected to form a large-area solar cell module, and then the photovoltaic power generation device is formed by matching with components such as a power controller and the like.
The photovoltaic power generation on the market at present can produce the phenomenon of electric leakage after long-time use, and current detection adopts the ampere meter to carry out detection section by section, and efficiency is lower, and the amount of labour is big.
Disclosure of Invention
The invention aims to provide a photovoltaic power generation monitoring and management system, which aims to solve the problem that the photovoltaic power generation is likely to generate electric leakage after being used for a long time.
In order to achieve the above object, the present invention provides a photovoltaic power generation monitoring and management system, which includes a photovoltaic power generation assembly, a detection assembly for detecting temperature, leakage current, current and voltage of the photovoltaic power generation assembly, a control assembly for receiving and processing data detected by the detection assembly, and a monitoring assembly for executing instructions of the control assembly to control the photovoltaic power generation assembly, wherein the photovoltaic power generation assembly includes a solar cell panel, the solar cell panel is electrically connected with an input end of an inverter, an output end of the inverter is connected with a power transmission cable, a temperature detector, a current detector and a voltage detector in a lap joint manner, an output end of the power transmission cable is connected with a leakage current detector, an input end of the inverter is also connected with a current controller, a leakage controller, a current controller and a voltage controller in a lap joint manner, and the temperature detector, the current detector, The leakage detector, the current controller, the leakage controller, the current controller and the voltage controller are all connected with a processor
Wherein the current detector and the leakage detector are respectively located at both ends of the power transmission cable.
The temperature detector is a thermocouple bimetallic thermometer and is used for detecting the temperature of the photovoltaic power generation assembly and controlling the temperature through the current controller.
The leakage detector is set to be an LDJC.pcb leakage detection board and used for detecting whether the photovoltaic power generation assembly leaks electricity or not and controlling the photovoltaic power generation assembly through the leakage controller.
The current detector is a Hall sensor and is used for detecting the current of the photovoltaic power generation assembly and controlling the photovoltaic power generation assembly through the electric leakage controller.
The voltage detector is set as a voltage sensor and used for detecting the voltage of the photovoltaic power generation assembly and controlling the photovoltaic power generation assembly through the voltage controller.
The output end of the solar cell panel is connected with a junction box, and the output end of the junction box is connected with the inverter.
The junction box is electrically connected with a charging and discharging device, and the charging and discharging device is electrically connected with a storage battery pack.
The processor is connected with the control center through the communication module, and the communication module is arranged as an antenna.
The processor is connected with a display module, and the display module is arranged as a touch screen and used for man-machine interaction.
According to the photovoltaic power generation monitoring and management system, the current detector and the power transmission cable are arranged at the output end of the inverter, the power transmission cable is arranged at the output end of the power transmission cable, when the power leakage detector detects power leakage data, the data detected by the power leakage detector is compared with the data of the current detector, if the error between the data and the data of the current detector is within the transportation loss error of the power transmission cable, the power transmission cable is normal, power leakage is generated between components between photovoltaic power generation assemblies, otherwise, if the error between the data and the data of the power transmission cable is outside the transportation loss of the power transmission cable, the power transmission cable is required to be repaired and replaced, and if the power leakage detector does not detect the power leakage data, all the power transmission cable is normal.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall connection of the present invention;
FIG. 2 is a schematic view of the photovoltaic power generation module according to the present invention;
FIG. 3 is a schematic view of the connection of the monitoring assembly of the present invention;
the solar energy monitoring system comprises a photovoltaic power generation assembly 1, a solar panel 11, a combiner box 12, an inverter 13, a charging and discharging device 14, a storage battery pack 15, a power transmission cable 16, a detection assembly 2, a temperature detector 21, a leakage detector 22, a current detector 23, a voltage detector 24, a control assembly 3, a processor 31, a communication module 32, a display module 33, a monitoring assembly 4, a temperature controller 41, a leakage controller 42, a current controller 43 and a voltage controller 44.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1-3, the present invention provides a technical solution, a photovoltaic power generation monitoring and management system, including a photovoltaic power generation assembly 1, a detection assembly 2 for detecting temperature, leakage, current and voltage of the photovoltaic power generation assembly 1, a control assembly 3 for receiving and processing data detected by the detection assembly 2, and a monitoring assembly 4 for executing an instruction of the control assembly 3 to control the photovoltaic power generation assembly 1, wherein the photovoltaic power generation assembly 1 includes a solar panel 11, the solar panel 11 is electrically connected to an input end of an inverter 13, an output end of the inverter 13 is connected to a power transmission cable 16, a temperature detector 21, a current detector 23 and a voltage detector 24 in a lap joint manner, an output end of the power transmission cable 16 is connected to a leakage detector 22, an input end of the inverter 13 is connected to a temperature controller 41, a leakage controller 42, a current controller 43 and a voltage controller 44 in a lap joint manner, the temperature detector 21, the leakage detector 22, the current detector 23, the temperature controller 41, the leakage controller 42, the current controller 43, and the voltage controller 44 are all connected to the processor 31.
In the embodiment, when in use, firstly the photovoltaic power generation assembly 1 works normally, a plurality of solar panels 11 in the photovoltaic power generation assembly 1 receive solar energy and convert the solar energy into electric energy to be collected through a header box 12, then a part of the electric energy flows into a storage battery pack 15 through a charging and discharging device 14 to be stored as a backup power source, meanwhile, the other part of the electric energy is converted into alternating current through an inverter 13 and is transmitted to a remote power transmission through a power transmission cable 16, a temperature detector 21 which is lapped at the output end of the inverter 13 is used for detecting the temperature of the inverter 13 and transmitting the temperature detection result to a processor 31, the processor 31 compares the temperature data according to the internal storage, when the detected temperature is lower than the internal storage temperature data, the temperature value is qualified and does not need to be changed, when the detected temperature is higher than the internal storage temperature data, if the temperature value is unqualified, the processor 31 performs heat dissipation and temperature reduction on the whole photovoltaic power generation assembly 1 through the temperature controller 41; meanwhile, the voltage detector 24 is also used for avoiding damage caused by overhigh voltage of the inverter 13, the voltage detector 24 is used for detecting the voltage of the inverter 13 and sending the voltage detection result to the processor 31, the processor 31 compares the voltage with the internally stored voltage data, when the detected voltage is lower than the internally stored voltage data, the voltage value is qualified and does not need to be changed, and when the detected voltage is higher than the internally stored voltage data, the voltage value is unqualified, and the processor 31 properly adjusts the voltage of the whole photovoltaic power generation assembly 1 through the voltage controller 44, namely the inverter 13; the current detector 23 is used for detecting the current of the inverter 13 and sending the current detection result to the processor 31, the processor 31 compares the current data stored in the processor with each other, when the detected current is lower than the current data stored in the processor, the current value is not qualified, the photovoltaic power generation assembly 1 needs to be detected, whether shielding occurs or the solar cell panel 11 is damaged is found, timely correction is performed after the situation is checked, when the detected current is higher than the current data stored in the processor, the current value is qualified, finally the electric leakage detector 22 detects the electric leakage of the power transmission cable 16 and sends the detection result to the processor 31, the processor 31 performs appropriate conversion and comparison on the detection result and the detection data of the current detector 23 in the previous step, and if the error between the detection result and the detection data is not large, the situation shows that the power transmission cable 16 has no problem, each device of the photovoltaic power generation assembly 1 may have electric leakage, otherwise, a large error between the two devices indicates that the power transmission cable 16 has a problem, and the circuit is switched to the standby power transmission cable 16 through the electric leakage controller 42 mounted at the output end of the inverter 13.
Further, a current detector 23 and a leakage detector 22 are respectively located at both ends of the power transmission cable 16.
In the present embodiment, the current detector 23 detects current of the photovoltaic power generation module 1 in front, if the leakage detector 22 has data indicating leakage, the processor 31 may convert and compare the value detected by the leakage detector 22 with the data detected by the current detector 23, determine a difference value between the two, if the difference value is small, indicate that the power transmission cable 16 has no problem, otherwise, the photovoltaic power generation module 1 has a problem, and if the difference value is large, indicate that the power transmission cable 16 has a problem.
Further, the temperature detector 21 is provided as a thermocouple bimetal thermometer for detecting the temperature of the photovoltaic power generation module 1 and controlling it by the temperature controller 41.
In the present embodiment, the temperature sensor is used for detecting internal temperature values of the devices such as the combiner box 12 and the inverter 13, and the safe operation of the system is ensured by monitoring the temperature values during the operation of each device.
Further, the leakage detector 22 is configured as an ldjc.pcb leakage detection board for detecting whether the photovoltaic power generation module 1 leaks electricity and controlling through the leakage controller 42.
In the present embodiment, the leakage detector 22 can detect whether or not there is leakage in the front line, and when there is leakage in the front line, it can directly determine whether there is a problem with the power transmission cable 16 or a problem with the photovoltaic power generation module 1 by performing detection in stages in cooperation with the current detector 23.
Further, the current detector 23 is provided as a hall sensor for detecting the current of the photovoltaic power generation module 1 and controlling by the leakage controller 42.
In this embodiment, a hall sensor is used for current detection, the hall sensor is a sensor that uses the hall effect of a semiconductor hall element to realize magnetoelectric conversion, and the hall sensor combines the advantages of a resistive shunt and a transformer, can detect alternating current, direct current and even transient peak values, and has the advantages of high sensitivity, good linearity, good stability, small size, high temperature resistance and the like.
Further, the voltage detector 24 is provided as a voltage sensor for detecting the voltage of the photovoltaic power generation module 1 and controlling the voltage by the voltage controller 44.
In the present embodiment, the input terminal of the voltage detector 24 is connected to the inverter 13, the output terminal thereof is connected to the processor 31, and the voltage detector 24 collects the system voltage by a resistance voltage division method.
Further, the output end of the solar cell panel 11 is connected to a combiner box 12, and the output end of the combiner box 12 is connected to an inverter 13.
In this embodiment, the combiner box 12 is disposed between the solar cell panels 11 and the inverter 13, and is configured to collect the currents of the plurality of solar cell panels 11, and after the currents are combined in the combiner box 12, the currents form a complete photovoltaic power generation system through the controller, the inverter 13, and the like, so as to implement grid connection with the utility power, and reduce the connection lines between the photovoltaic power generation assembly 1 and the inverter 13, and generally, a dc lightning protection module, a dc fuse, a circuit breaker, and the like dedicated to photovoltaic are configured in the combiner box 12, so that a user can timely and accurately grasp the operating conditions of the solar cell assembly.
Further, the junction box 12 is electrically connected with a charging and discharging device 14, and the charging and discharging device 14 is electrically connected with a storage battery pack 15.
In the present embodiment, when the charging and discharging device 14 charges the storage battery pack 15, the storage battery pack 15 is used as an energy storage device of the whole photovoltaic power generation system, and when the charging and discharging device 14 discharges the storage battery pack 15, the originally stored electric quantity is used as an energy source of the monitoring component 4, so that a power supply guarantee is provided for illumination, communication and equipment maintenance during power failure, normal operation of the whole system is ensured, and the storage battery pack 15 has low self-discharge, long service life, less maintenance, high charging efficiency and the like.
Further, the processor 31 is connected with the control center through a communication module 32, and the communication module 32 is set as an antenna; the processor 31 is connected with a display module 33, and the display module 33 is a touch screen for human-computer interaction.
In this embodiment, the processor 31 is connected to the control center through the communication module 32, the control center can read the processor 31 and the related detection data, the remote control assembly 3 further performs corresponding command control, and the touch screen is provided for on-site personnel to control, so as to facilitate the maintenance of the maintenance personnel.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A photovoltaic power generation monitoring and management system is characterized in that,
including the photovoltaic power generation subassembly, be used for right the photovoltaic power generation subassembly carries out the detection module of temperature, electric leakage, electric current and voltage detection, be used for receiving and handling the control module of the data that the detection module detected, be used for carrying out the control module instruction is right the monitoring subassembly that the photovoltaic power generation subassembly carries out control, the photovoltaic power generation subassembly includes solar cell panel, solar cell panel electric connection has the dc-to-ac converter input, the dc-to-ac converter output overlap joint has transmission of electricity cable, thermodetector, current detector and voltage detector, the output of transmission of electricity cable is connected with the leakage detector, the input of dc-to-ac converter still overlap joint has temperature controller, leakage controller, current controller and voltage controller, the thermodetector, the leakage detector, the current detector, the temperature controller, The leakage controller, the current controller and the voltage controller are all connected with a processor.
2. The photovoltaic power generation monitoring and management system according to claim 1,
the current detector and the leakage detector are respectively located at two ends of the power transmission cable.
3. The photovoltaic power generation monitoring and management system according to claim 1,
the temperature detector is a thermocouple bimetallic thermometer and is used for detecting the temperature of the photovoltaic power generation assembly and controlling the temperature through the temperature controller.
4. The photovoltaic power generation monitoring and management system according to claim 1,
the leakage detector is set as an LDJC.pcb leakage detection board and is used for detecting whether the photovoltaic power generation assembly leaks electricity and controlling the photovoltaic power generation assembly through the leakage controller.
5. The photovoltaic power generation monitoring and management system according to claim 1,
the current detector is a Hall sensor and is used for detecting the current of the photovoltaic power generation assembly and controlling the photovoltaic power generation assembly through the electric leakage controller.
6. The photovoltaic power generation monitoring and management system according to claim 1,
the voltage detector is set as a voltage sensor and used for detecting the voltage of the photovoltaic power generation assembly and controlling the photovoltaic power generation assembly through the voltage controller.
7. The photovoltaic power generation monitoring and management system according to claim 1,
the output end of the solar cell panel is connected with a junction box, and the output end of the junction box is connected with the inverter.
8. The photovoltaic power generation monitoring and management system according to claim 7,
the collection flow box is electrically connected with a charging and discharging device, and the charging and discharging device is electrically connected with a storage battery pack.
9. The photovoltaic power generation monitoring and management system according to claim 1,
the processor is connected with the control center through the communication module, and the communication module is arranged as an antenna.
10. The photovoltaic power generation monitoring and management system of claim 9,
the processor is connected with a display module, and the display module is arranged as a touch screen and used for man-machine interaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910827259.6A CN110661487A (en) | 2019-09-03 | 2019-09-03 | Photovoltaic power generation monitoring management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910827259.6A CN110661487A (en) | 2019-09-03 | 2019-09-03 | Photovoltaic power generation monitoring management system |
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| CN110661487A true CN110661487A (en) | 2020-01-07 |
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| CN201910827259.6A Pending CN110661487A (en) | 2019-09-03 | 2019-09-03 | Photovoltaic power generation monitoring management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4297212A4 (en) * | 2021-03-26 | 2024-04-17 | Huawei Digital Power Tech Co Ltd | Power supply apparatus, and method for measuring insulation resistance of input end of power supply apparatus |
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| US20030067724A1 (en) * | 1999-11-29 | 2003-04-10 | Canon Kabushiki Kaisha | Power generation system, and method for installing the same |
| CN206004617U (en) * | 2016-09-21 | 2017-03-08 | 南京创瑞达电力技术有限公司 | A kind of photovoltaic generation monitoring system |
| CN206740902U (en) * | 2017-05-18 | 2017-12-12 | 上海路美思电气有限公司 | Intelligent apparatus |
| US20170366010A1 (en) * | 2016-06-21 | 2017-12-21 | International Business Machines Corporation | Monitoring and Evaluating Performance and Aging of Solar Photovoltaic Generation Systems and Power Inverters |
| CN107968627A (en) * | 2017-11-14 | 2018-04-27 | 珠海格力电器股份有限公司 | Detection device and method and the non-isolation type photovoltaic system comprising the device |
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2019
- 2019-09-03 CN CN201910827259.6A patent/CN110661487A/en active Pending
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| US20030067724A1 (en) * | 1999-11-29 | 2003-04-10 | Canon Kabushiki Kaisha | Power generation system, and method for installing the same |
| US20170366010A1 (en) * | 2016-06-21 | 2017-12-21 | International Business Machines Corporation | Monitoring and Evaluating Performance and Aging of Solar Photovoltaic Generation Systems and Power Inverters |
| CN206004617U (en) * | 2016-09-21 | 2017-03-08 | 南京创瑞达电力技术有限公司 | A kind of photovoltaic generation monitoring system |
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| EP4297212A4 (en) * | 2021-03-26 | 2024-04-17 | Huawei Digital Power Tech Co Ltd | Power supply apparatus, and method for measuring insulation resistance of input end of power supply apparatus |
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