CN203788232U - Solar power station pid recovery system - Google Patents
Solar power station pid recovery system Download PDFInfo
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- CN203788232U CN203788232U CN201420179917.8U CN201420179917U CN203788232U CN 203788232 U CN203788232 U CN 203788232U CN 201420179917 U CN201420179917 U CN 201420179917U CN 203788232 U CN203788232 U CN 203788232U
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- distribution cabinet
- power
- controller
- power distribution
- pid recovery
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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
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Abstract
The utility model discloses a solar power station PID recovery system comprising a solar cell component array, a combiner box, a direct-current power distribution cabinet, a PID recovery device, an inverter, an alternating-current power distribution cabinet and a transformer. The solar cell component array is connected in parallel into the combiner box. The combiner box is connected in parallel to the direct-current power distribution cabinet. The direct-current power distribution cabinet, the inverter, the alternating-current power distribution cabinet and the transformer are connected successively. The PID recovery device comprises a high-voltage power source, an on-off switch and a controller. The high-voltage power source is connected with the controller through the on-off switch. The on-off switch is provided with a power low-voltage output end and a power high-voltage output end. The power low-voltage output end is connected with the frame or support of the solar cell component array. The power high-voltage output end is connected with the negative electrode end in the direct-current power distribution cabinet or the combiner box. The solar power station PID recovery system of the utility model has the following advantages that automatic control can be realized, the power recovery purpose can be achieved, the normal power generation of the solar power station will not be influenced, and the application range and the utilization safety and reliability can be improved.
Description
Technical field
The utility model relates to solar energy correlative technology field, refers in particular to a kind of solar power station PID recovery system.
Background technology
Photovoltaic application is more and more, and power plant scale is increasing, and the number of assembly series connection constantly increases.In this case, it is increasing that solar components bears the probability of high potential energy over the ground.Due to the existence of high pressure, between inner conductive body and the earth, (pass through frame) and have leakage current.The PID phenomenon of solar power station is the phenomenon of the generated output decay that occurs in application process out of doors of solar module.
2005, NREL carried out the research of leakage current to assembly reliability aspect between component internal and the earth first, thought that the gathering of the cell piece surface charge that caused by electrical potential difference inside and outside assembly is the major reason that causes component power decay.In the situation that inside and outside high pressure exists, the ion transport phenomena occurring in the material of the encapsulating material of assembly battery and assembly upper surface layer and undersurface layer, in battery, there is hot carrier phenomenon, the active layer of battery has been cut down in the reallocation of electric charge, and then having caused the reduction of component power, this PID phenomenon can be recovered.
Reveal in electric production process, also may cause the electrochemical corrosion of component package material production, thereby cause the phenomenons such as the increase of assembly series resistance, light transmittance reduction, delamination, cause component power decay, this PID phenomenon cannot be recovered.
Material and the technique of the installment state of PID phenomenon and system, the encapsulating material of assembly and technique, cell piece have very large relation.So can go to alleviate and solve PID phenomenon from battery process, component process, system configuration equal angles.Battery process and component process can only slow down to a certain extent, but can not fundamentally remove.System configuration can fundamentally be eliminated PID phenomenon, and wherein minus earth is a kind of scheme, and minus earth can only the textural application in the power station with transformer, higher to security of system testing requirement.
PID has become one of key factor of the domestic assembly quality of external Buyer Complaint in recent years, in the time of serious, it can cause that a block assembly power attenuation is more than 50%, thereby affect the power stage in whole power station, many enterprises analyze the PID phenomenon of assembly in the world.PID effect phenomenon great majority the most easily appear under moist condition and occur, and its active degree is relevant to moist degree, and simultaneously assembly surface also has very large relation by conductivity, acidity, alkalescence and with the pollution level of the object of ion.
Utility model content
The utility model is to have above-mentioned deficiency in order to overcome in prior art, provides a kind of automatic control to realize the solar power station PID recovery system that power recovers and do not affect normal power generation.
To achieve these goals, the utility model is by the following technical solutions:
Solar power station PID recovery system, comprise some solar cell module array, some header boxs, DC power distribution cabinet, PID recovery device, inverter, AC power distribution cabinet/AC distribution panel and transformer, described some solar cell module array are connected in parallel in a header box, some header boxs are connected in parallel to DC power distribution cabinet, described DC power distribution cabinet, inverter, AC power distribution cabinet/AC distribution panel is connected successively with transformer, described PID recovery device comprises high voltage source, on-off switch, controller, clock and touch-screen, described high voltage source is connected with controller by on-off switch, described clock is connected with controller respectively with touch-screen, described on-off switch is provided with power supply low-voltage output and power supply high-voltage output end, described power supply low-voltage output is connected with frame or the support of solar cell module array, described power supply high-voltage output end is connected with the negative pole end in DC power distribution cabinet or header box.
In the utility model, the direct current that solar power station is sent out solar cell module array makes it to become alternating current by header box, DC power distribution cabinet and inverter successively, then alternating current is accessed to electrical network through AC power distribution cabinet/AC distribution panel and transformer.Controller in PID recovery device is controlled the open and close of on-off switch, and touch-screen carries out instruction control for real-time to controller, by touch-screen, set in advance the time controlling value of the opening and closing of high voltage source, then controller reads clock signal in real time, when clock signal meets time of setting in advance during controlling value, controller is controlled on-off switch and is made its closure, high voltage source is linked in solar cell module array by power supply low-voltage output and power supply high-voltage output end, by solar cell module array is applied to reverse voltage, the electric charge on solar battery sheet surface can oppositely be moved, reach the object that power recovers, pass through clock simultaneously, the control device that on-off switch matches with controller, guaranteed in the time period of this recovery system work, solar cell module array is generating not, this recovery system is realized automatically and being controlled, realize and stopping daytime, the state of work at night, do not affect the normal power generation of solar power station.
As preferably, described PID recovery device also comprises storage battery interface, and described storage battery interface is connected with high voltage source.Design can be powered by storage battery like this, to avoid, without working power in the situation that, still can using this recovery system, has increased the scope of application of this recovery system.
As preferably, described controller is provided with and detects low pressure input and detect high voltage input terminal, and described detection low pressure input and detection high voltage input terminal are connected respectively negative pole end and the positive terminal of header box or DC power distribution cabinet.By touch-screen, controller is preset to magnitude of voltage between rational both positive and negative polarity, detect the both positive and negative polarity magnitude of voltage of header box or DC power distribution cabinet, make magnitude of voltage comparison between itself and default both positive and negative polarity, when positive and negative voltage across poles is during lower than set point, controller opens high voltage source by on-off switch; When positive and negative voltage across poles is during higher than set point, controller cuts out high voltage source by on-off switch, the requirement recovering to meet power.
As preferably, described PID recovery device also comprises irradiatometer, and described irradiatometer is connected with controller.By touch-screen, controller is preset to rational irradiation value, receive in real time the irradiation value signal that irradiatometer sends, make itself and default irradiation value comparison, the irradiation value obtaining when irradiatometer is during lower than set point, think that irradiation intensity can not make solar cell module array generating again, controller opens high voltage source by on-off switch; The irradiation value obtaining when irradiatometer is during higher than set point, and controller cuts out high voltage source by on-off switch, the requirement recovering to meet power.
As preferably, described PID recovery device also comprises warning device, and described warning device is connected with controller.Controller in PID recovery device is by detecting the numerical value of power supply low-voltage output and power supply high-voltage output end, judge that the output of high voltage source in PID recovery device is whether in operating states such as overvoltage, under-voltage, overcurrents, if surpassed or during lower than set point, warning device can carry out automatic alarm, can remind timely operating personnel PID recovery device to have certain potential safety hazard, operating personnel can be fixed a breakdown timely, improved the safety and reliability of PID recovery device.
The beneficial effects of the utility model are: realize automatically and controlling, reach the object that power recovers, do not affect the normal power generation of solar power station, improved the scope of application of PID recovery device, improved the safety and reliability of PID recovery device.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the internal structure schematic diagram of PID recovery device in the utility model.
In figure: 1. solar cell module array, 2. header box, 3. DC power distribution cabinet, 4. inverter, 5. AC power distribution cabinet/AC distribution panel, 6. transformer, 7.PID recovery device, 71. controllers, 72. on-off switches, 73. high voltage sourcies, 74. storage battery interfaces, 75. touch-screens, 76. warning devices, 8. irradiatometer.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
As Fig. 1, in embodiment described in Fig. 2, solar power station PID recovery system, comprises some solar cell module array 1, some header boxs 2, DC power distribution cabinet 3, PID recovery device 7, inverter 4, AC power distribution cabinet/AC distribution panel 5 and transformer 6, some solar cell module array 1 are connected in parallel in a header box 2, and some header boxs 2 are connected in parallel to DC power distribution cabinet 3, DC power distribution cabinet 3, inverter 4, AC power distribution cabinet/AC distribution panel 5 is connected successively with transformer 6, and PID recovery device 7 comprises high voltage source 73, on-off switch 72, controller 71, storage battery interface 74, clock, irradiatometer 8, warning device 76 and touch-screen 75, storage battery interface 74 is connected with high voltage source 73, and high voltage source 73 is connected with controller 71 by on-off switch 72, clock, irradiatometer 8, warning device 76 is connected with controller 71 respectively with touch-screen 75, on-off switch 72 is provided with power supply low-voltage output and power supply high-voltage output end, power supply low-voltage output is connected with frame or the support of solar cell module array 1, power supply high-voltage output end is connected with the negative pole end in DC power distribution cabinet 3 or header box 2, controller 71 is provided with and detects low pressure input and detect high voltage input terminal, detects negative pole end and positive terminal that low pressure input and detection high voltage input terminal are connected respectively header box 2 or DC power distribution cabinet 3.In the present embodiment, power supply high-voltage output end is connected with the negative pole end in DC power distribution cabinet 3, detects negative pole end and positive terminal that low pressure input and detection high voltage input terminal are connected respectively DC power distribution cabinet 3.
In the utility model, solar power station makes it to become alternating current by header box 2, DC power distribution cabinet 3 and inverter 4 successively by the direct current of 1 of solar cell module array, then alternating current is accessed to electrical networks through AC power distribution cabinet/AC distribution panel 5 and transformer 6.Controller 71 in PID recovery device 7 is controlled the open and close of on-off switch 72, and touch-screen 75 carries out instruction control for real-time to controller 71.
Control mode one: the time controlling value that sets in advance the opening and closing of high voltage source 73 by touch-screen 75, then controller 71 reads clock signal in real time, when clock signal meets time of setting in advance during controlling value, controller 71 is controlled on-off switch 72 and is made its closure, pass through clock simultaneously, the control device that on-off switch 72 matches with controller 71, guaranteed in the time period of this recovery system work, not generating of solar cell module array 1, this recovery system is realized automatically and being controlled, realize and stopping daytime, the state of work at night, do not affect the normal power generation of solar power station.
Control mode two: by magnitude of voltage between the default rational both positive and negative polarity of 75 pairs of controllers of touch-screen 71, detect the both positive and negative polarity magnitude of voltage of header box 2 or DC power distribution cabinet 3, make magnitude of voltage comparison between itself and default both positive and negative polarity, when positive and negative voltage across poles is during lower than set point, controller 71 opens high voltage source 73 by on-off switch 72; When positive and negative voltage across poles is during higher than set point, controller 71 cuts out high voltage source 73 by on-off switch 72.
Control mode three: by the default rational irradiation value of 75 pairs of controllers of touch-screen 71, receive in real time the irradiation value signal that irradiatometer 8 sends, make itself and default irradiation value comparison, the irradiation value obtaining when irradiatometer 8 is during lower than set point, think that irradiation intensity can not make solar cell module array 1 generating again, controller 71 opens high voltage source 73 by on-off switch 72; The irradiation value obtaining when irradiatometer 8 is during higher than set point, and controller 71 cuts out high voltage source 73 by on-off switch 72.
High voltage source 73 is linked in solar cell module array 1 by power supply low-voltage output and power supply high-voltage output end, by solar cell module array 1 is applied to reverse voltage, the electric charge on solar battery sheet surface can oppositely be moved, reach the object that power recovers
Meanwhile, in order to guarantee the safe and effective operation of PID recovery device 7, PID recovery device 7 is also provided with overvoltage, under-voltage, overcurrent warning function.Over voltage alarm is to exceed after the certain value of setting voltage when output voltage, and PID recovery device 7 will automatic cut-off power.Undervoltage warning is that PID recovery device 7 will automatic cut-off power after the output voltage value certain lower than setting voltage.It is to surpass after certain value when output current that overcurrent is reported to the police, and PID recovery device 7 will automatic cut-off power.Over voltage alarm value, undervoltage warning value, overcurrent alarming value can be set on touch-screen 75, and warning message may be displayed on touch-screen 75.
Claims (5)
1. solar power station PID recovery system, it is characterized in that, comprise some solar cell module array (1), some header boxs (2), DC power distribution cabinet (3), PID recovery device (7), inverter (4), AC power distribution cabinet/AC distribution panel (5) and transformer (6), described some solar cell module array (1) are connected in parallel in a header box (2), some header boxs (2) are connected in parallel to DC power distribution cabinet (3), described DC power distribution cabinet (3), inverter (4), AC power distribution cabinet/AC distribution panel (5) is connected successively with transformer (6), described PID recovery device (7) comprises high voltage source (73), on-off switch (72), controller (71), clock and touch-screen (75), described high voltage source (73) is connected with controller (71) by on-off switch (72), described clock is connected with controller (71) respectively with touch-screen (75), described on-off switch (72) is provided with power supply low-voltage output and power supply high-voltage output end, described power supply low-voltage output is connected with frame or the support of solar cell module array (1), described power supply high-voltage output end is connected with the negative pole end in DC power distribution cabinet (3) or header box (2).
2. solar power station PID recovery system according to claim 1, is characterized in that, described PID recovery device (7) also comprises storage battery interface (74), and described storage battery interface (74) is connected with high voltage source (73).
3. solar power station PID recovery system according to claim 1 and 2, it is characterized in that, described controller (71) is provided with and detects low pressure input and detect high voltage input terminal, and described detection low pressure input and detection high voltage input terminal are connected respectively negative pole end and the positive terminal of header box (2) or DC power distribution cabinet (3).
4. solar power station PID recovery system according to claim 1 and 2, is characterized in that, described PID recovery device (7) also comprises irradiatometer (8), and described irradiatometer (8) is connected with controller (71).
5. solar power station PID recovery system according to claim 1 and 2, is characterized in that, described PID recovery device (7) also comprises warning device (76), and described warning device (76) is connected with controller (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179917.8U CN203788232U (en) | 2014-04-15 | 2014-04-15 | Solar power station pid recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179917.8U CN203788232U (en) | 2014-04-15 | 2014-04-15 | Solar power station pid recovery system |
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| Publication Number | Publication Date |
|---|---|
| CN203788232U true CN203788232U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420179917.8U Withdrawn - After Issue CN203788232U (en) | 2014-04-15 | 2014-04-15 | Solar power station pid recovery system |
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| CN (1) | CN203788232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944501A (en) * | 2014-04-15 | 2014-07-23 | 上海质卫环保科技有限公司 | PID recovery system for solar power station |
-
2014
- 2014-04-15 CN CN201420179917.8U patent/CN203788232U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944501A (en) * | 2014-04-15 | 2014-07-23 | 上海质卫环保科技有限公司 | PID recovery system for solar power station |
| CN103944501B (en) * | 2014-04-15 | 2017-07-25 | 上海质卫环保科技有限公司 | Solar power station PID recovery systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140820 Effective date of abandoning: 20170725 |
|
| AV01 | Patent right actively abandoned |