CN109617126A - A kind of novel anti-PID device - Google Patents
A kind of novel anti-PID device Download PDFInfo
- Publication number
- CN109617126A CN109617126A CN201910039588.4A CN201910039588A CN109617126A CN 109617126 A CN109617126 A CN 109617126A CN 201910039588 A CN201910039588 A CN 201910039588A CN 109617126 A CN109617126 A CN 109617126A
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- pid
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- 230000000694 effects Effects 0.000 claims abstract description 19
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 238000005070 sampling Methods 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- H02J3/383—
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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
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- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
A kind of novel anti-PID device of the invention, it is powered using three phase network, it is characterized in that, being connected to inverter power supply ac output end, a virtual midpoint is constructed by inductance and resistance, the output of anti-PID controller connects between virtual midpoint and ground, isolation High voltage output, sampling power supply power supply and logical comparison level are provided, the anti-PID controller is by raising virtual midpoint voltage-to-ground, after grid-connected inverters, the voltage-to-ground of PV solar panel increases immediately, to inhibit the generation of PID effect.The present invention has many advantages, such as that inhibition PID effect, low in energy consumption, stability is good, meets safety requirement, can extend lifetime of system with the generating efficiency of the promotion photovoltaic parallel in system of high degree.
Description
Technical field
The present invention relates to a kind of novel anti-PID devices, for inhibiting the PID effect of PV solar panel.
Background technique
Solar power generation is emerging renewable energy technologies.PV solar panel, inverter, power grid and some other photovoltaic hair
Necessary matching component of electric system etc. is the necessary component of photovoltaic power generation, and wherein the factors such as efficiency, service life, stabilization are especially heavy
It wants.And it is increasingly extensive deep with application, the sedimentation time of industry is more long, it is found that there are a kind of PID to imitate for photovoltaic battery panel
It answers.PID effect will lead to the fill factor of cell piece, open-circuit voltage, short circuit current reduction, and component power substantially decays.For this purpose,
How to improve PID effect becomes the important topic of photovoltaic plant industry.It is that can inhibit or repair since PID effect is reversible
Multiple.Then existing the equipment of a variety of anti-PID effects in industry occur.
Such as: application number 201610921495.0 discloses a kind of virtual ground system of anti-photovoltaic panel PID effect, including virtual
Earthing or grounding means, the virtual ground device seal between photovoltaic panel cathode and ground, the virtual ground device according to photovoltaic panel just
Pole insulation against ground situation, adjusts out corresponding equivalent impedance, and equivalent impedance divides over the ground for this impedance and photovoltaic panel anode, Jin Ergai
Become photovoltaic panel cathode voltage-to-ground, and makes leakage current controllable.The invention guarantees the effect of anti-PID effect, control to greatest extent
Leakage current can also inhibit PID effect all the period of time, inverter is not switched on still effectively.
Also, application number 201410211651.5 discloses a kind of device for inhibiting solar panel PID effect, which passes through voltage
It is lifted circuit lifting photovoltaic plant and rises the voltage-to-ground of exchange side neutral point, to improve the electric over the ground of inverter prime solar panel
Pressure, make solar panel is in positive bias over the ground, realizes the inhibition to solar panel PID effect.The invention do not need to every inverter or
The advantages that photovoltaic panel is handled, and is had and is realized simply, at low cost, does not influence insulation impedance detection, particularly suitable for using group
The application of serial type photovoltaic DC-to-AC converter building photovoltaic plant.
Summary of the invention
It is an object of the invention to: a kind of novel anti-PID device is provided, is belonged to for the control for inhibiting PID effect in the daytime
Device.
The object of the invention is achieved through the following technical solutions: a kind of novel anti-PID device is powered, even using three phase network
It connects in inverter power supply ac output end, a virtual midpoint is constructed by inductance and resistance, the output of anti-PID controller connects
Between virtual midpoint and ground, isolation High voltage output, sampling power supply power supply and logical comparison level, the anti-PID control are provided
Device is by raising virtual midpoint voltage-to-ground, and after grid-connected inverters, the voltage-to-ground of PV solar panel increases immediately, to inhibit
The generation of PID effect.
The anti-PID controller includes power module, output module and logic module, from power module to output module
Isolation High voltage output is provided and is powered to logic module, the unlatching in grid-connected inverters of anti-PID controller, the logic mould are made
Block sampling output module simultaneously carries out logical comparison level, issues control signal to power module, protects system safety operation.
Anti- PID controller is the unlatching in grid-connected inverters in the present invention, has and inhibits PID effect, low in energy consumption, stability
The advantages that good, meet safety requirement, lifetime of system can be extended with the generating efficiency of the promotion photovoltaic parallel in system of high degree.
Detailed description of the invention
1 present system of attached drawing connects block diagram；
The internal structure block diagram of the anti-PID controller of attached drawing 2；
Figure label explanation:
1 --- PV photovoltaic panel；
2 --- inverter；
3 --- anti-PID controller；
31 --- power module；32 --- output module；33 --- logic module.
Specific embodiment
As shown in 1 present system of attached drawing connection block diagram, a kind of novel anti-PID device is powered using three phase network, is connected
In 2 capable AC output end of inverter, a virtual midpoint is constructed by inductance L and resistance R, the output of anti-PID controller 3 connects
Between virtual midpoint and ground, isolation High voltage output, sampling power supply power supply and logical comparison level etc. are provided, grid-connected inverters are worked as
Afterwards, the anti-PID controller is increased immediately by raising virtual midpoint voltage-to-ground, the voltage-to-ground of PV solar panel 1, can be with
Greatly inhibit the generation of PID effect.
As shown in the internal structure block diagram of the anti-PID controller of attached drawing 2, the anti-PID controller 3 includes power module
31, output module 32 and logic module 33 provide isolation High voltage output from power module 31 to output module 32 and to logic mould
Block 33 is powered, and the anti-unlatching when inverter 2 is grid-connected of PID controller 3 is made, and the logic module 33 samples output module 32 and goes forward side by side
Row logical comparison level issues control signal to power module 31, protects system safety operation.Such as when system jam or its
When his factor increases leakage current, anti-PID controller 3 can be automatically cut off；It when Failure elimination, automatically resets, restores normal defeated
It does well.
Technical solution provided in this embodiment can significantly inhibit photovoltaic PID effect, improve generating efficiency, increase
Service life.
Claims (2)
1. a kind of novel anti-PID device, is powered using three phase network, which is characterized in that be connected to inverter power supply exchange output
End constructs a virtual midpoint by inductance and resistance, and the output of anti-PID controller connects between virtual midpoint and ground, provides
High voltage output, sampling power supply power supply and logical comparison level is isolated, the anti-PID controller is by raising virtual midpoint over the ground
Voltage, after grid-connected inverters, the voltage-to-ground of PV solar panel increases immediately, to inhibit the generation of PID effect.
2. the novel anti-PID device of one kind according to claim 1, it is characterised in that: the anti-PID controller includes electricity
Source module, output module and logic module provide isolation High voltage output from power module to output module and supply to logic module
Electricity, making anti-PID controller is the unlatching in grid-connected inverters, and the logic module sampling output module simultaneously carries out logical comparison
Level issues control signal to power module, protects system safety operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039588.4A CN109617126A (en) | 2019-01-16 | 2019-01-16 | A kind of novel anti-PID device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039588.4A CN109617126A (en) | 2019-01-16 | 2019-01-16 | A kind of novel anti-PID device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109617126A true CN109617126A (en) | 2019-04-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910039588.4A Pending CN109617126A (en) | 2019-01-16 | 2019-01-16 | A kind of novel anti-PID device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109617126A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768300A (en) * | 2019-12-11 | 2020-02-07 | 阳光电源股份有限公司 | Wind-solar hybrid power generation system |
| CN110867900A (en) * | 2019-12-11 | 2020-03-06 | 阳光电源股份有限公司 | Wind-solar hybrid power generation system |
| CN110912195A (en) * | 2019-12-11 | 2020-03-24 | 阳光电源股份有限公司 | Wind-solar hybrid power generation system |
Citations (4)
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|---|---|---|---|---|
| CN103475271A (en) * | 2013-09-24 | 2013-12-25 | 深圳市禾望电气有限公司 | Photovoltaic power generation system and control method |
| CN106505944A (en) * | 2016-10-21 | 2017-03-15 | 上能电气股份有限公司 | A kind of virtual ground system of anti-photovoltaic panel PID effect |
| CN107069661A (en) * | 2017-04-28 | 2017-08-18 | 南京南瑞太阳能科技有限公司 | A kind of device for suppressing photovoltaic module PID effects |
| CN207782746U (en) * | 2018-03-05 | 2018-08-28 | 厦门科华恒盛电力能源有限公司 | A kind of photovoltaic DC-to-AC converter, photovoltaic inverting system and its PID protective devices |
-
2019
- 2019-01-16 CN CN201910039588.4A patent/CN109617126A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475271A (en) * | 2013-09-24 | 2013-12-25 | 深圳市禾望电气有限公司 | Photovoltaic power generation system and control method |
| CN106505944A (en) * | 2016-10-21 | 2017-03-15 | 上能电气股份有限公司 | A kind of virtual ground system of anti-photovoltaic panel PID effect |
| CN107069661A (en) * | 2017-04-28 | 2017-08-18 | 南京南瑞太阳能科技有限公司 | A kind of device for suppressing photovoltaic module PID effects |
| CN207782746U (en) * | 2018-03-05 | 2018-08-28 | 厦门科华恒盛电力能源有限公司 | A kind of photovoltaic DC-to-AC converter, photovoltaic inverting system and its PID protective devices |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768300A (en) * | 2019-12-11 | 2020-02-07 | 阳光电源股份有限公司 | Wind-solar hybrid power generation system |
| CN110867900A (en) * | 2019-12-11 | 2020-03-06 | 阳光电源股份有限公司 | Wind-solar hybrid power generation system |
| CN110912195A (en) * | 2019-12-11 | 2020-03-24 | 阳光电源股份有限公司 | Wind-solar hybrid power generation system |
| CN110867900B (en) * | 2019-12-11 | 2021-11-02 | 阳光电源股份有限公司 | Wind-solar hybrid power generation system |
| CN110912195B (en) * | 2019-12-11 | 2022-04-08 | 阳光电源股份有限公司 | Wind-solar hybrid power generation system |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 315700, No. 57, golden access road, Binhai Industrial Park, Xiangshan County, Ningbo, Zhejiang Applicant after: Jinlang Technology Co.,Ltd. Address before: 315700, No. 57, golden access road, Binhai Industrial Park, Xiangshan County, Ningbo, Zhejiang Applicant before: NINGBO GINLONG NEW ENERGY TECHNOLOGY Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190412 |
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| RJ01 | Rejection of invention patent application after publication |