CN104579156B - PID inhibition device of bipolar type photovoltaic array system - Google Patents
PID inhibition device of bipolar type photovoltaic array system Download PDFInfo
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- CN104579156B CN104579156B CN201410664597.XA CN201410664597A CN104579156B CN 104579156 B CN104579156 B CN 104579156B CN 201410664597 A CN201410664597 A CN 201410664597A CN 104579156 B CN104579156 B CN 104579156B
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- circuit breaker
- outfan
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- lane
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- 230000005764 inhibitory process Effects 0.000 title abstract 4
- 230000000452 restraining effect Effects 0.000 claims description 9
- 238000013480 data collection Methods 0.000 claims description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- 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
-
- 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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- Inverter Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a PID inhibition device of a bipolar type photovoltaic array system. The PID inhibition device comprises a control cabinet, a first circuit breaker QF1, a second circuit breaker QF2 and an interlocking device, wherein four wire inlet ports and three wire outlet ports are formed in the control cabinet; four channels are formed in each of the first circuit breaker QF1 and the second circuit breaker QF2; the interlocking device is mounted inside the control cabinet and is used for controlling the first circuit breaker QF1 and the second circuit breaker QF2 to be in an interlocked state. By adopting the PID inhibition device of the bipolar type photovoltaic array system, the PID phenomenon can be effectively inhibited, a conventional device does not need to be transformed, the cost is relatively low, and a manual mode and an automatic mode are available.
Description
Technical field
The present invention relates to a kind of optimization device for photovoltaic array system, especially one kind are used for bipolar system photovoltaic array
The PID restraining device of system.
Background technology
With the change of world energy sources general layout, the focus that photovoltaic generation is increasingly becoming various countries' further investigation, greatly develops.
PID (Potential Induced Degradation, current potential induction decay) phenomenon or Surface Polarization (Surface
Polarization) it is a unfavorable factor affecting crystal silicon cell assembly efficient utilization in current photovoltaic industry.Photovoltaic group
When part normally uses, in system, there is positive voltage or over the ground negative voltage over the ground, cause assembly surface charge buildup to cause power
Decay, as some months or one or two years assembly output and drastically reduce phenomenon in the short time.Exclusive for photovoltaic array
PID phenomenon, can add one layer of silica dioxide coating with holes between battery surface or passivation layer and battery, form an electric conduction
Road prevents harmful polarization, but this method increases battery manufacture cost and reduce the efficiency of battery to a certain extent.Also may be used
Using assembly voltage-to-ground in resistance change system or using plus earth module and the inverter with isolating transformer, but this
The method of kind makes the use of photovoltaic module there is limitation, and carries isolating transformer both to increased cost and also reduce system effect
Rate.
Content of the invention
The technical problem to be solved in the present invention is existing photovoltaic system when suppressing PID phenomenon, needs to battery itself
Or inverter transformed, not only increase cost but also also reduce system effectiveness.
In order to solve above-mentioned technical problem, the invention provides a kind of PID restraining device of bipolar system photovoltaic array system,
Including switch board, the first circuit breaker Q F1, the second circuit breaker Q F2 and interlock；Switch board be provided with four inlet wire ports with
And three outlet ports, four inlet wire ports are inputted with the first passage input of the first circuit breaker Q F1, second channel respectively
End, third channel input and fourth lane input are connected, three outlet ports respectively with the first circuit breaker Q F1 first
Channel output end, second channel outfan and fourth lane outfan are connected；The first passage input of the first circuit breaker Q F1
It is connected with the first passage input of the second circuit breaker Q F2, the second channel input of the first circuit breaker Q F1 and the second chopper
The second channel input of QF2 is connected, the third channel input of the first circuit breaker Q F1 and the threeway of the second circuit breaker Q F2
Road input is connected, the fourth lane input phase of the fourth lane input of the first circuit breaker Q F1 and the second circuit breaker Q F2
Even；The first passage outfan of the first circuit breaker Q F1 is connected with the third channel outfan of the second circuit breaker Q F2, the first open circuit
The second channel outfan of device QF1 is exported with the first passage of the second circuit breaker Q F2 after being connected with the outfan of third channel again
End and fourth lane outfan are connected, and the fourth lane outfan of the first circuit breaker Q F1 and the second of the second circuit breaker Q F2 leads to
Road outfan is connected；Interlock is arranged in switch board, and controls the first circuit breaker Q F1 and the second circuit breaker Q F2 to be in interlocking
State.
Battery itself or inverter need not be improved it is only necessary to by this device using the PID restraining device of the present invention
It is connected in existing bipolar system photovoltaic array, save the improved cost of system large area, and the PID due to the present invention
Restraining device only with circuit concatenate chopper, so not interfering with the efficiency of system yet；Can using interlock
It is carved with when ensureing any and only one chopper is in "on" position, improve the safety of photovoltaic power supply；By the first open circuit
Each outfan of device QF1 and the second circuit breaker Q F2 is connected according to the connected mode of the present invention, can be when interlock switches
The output state of three outlet ports is switched over, can effectively suppress the PID phenomenon of photovoltaic array.
As the further limits scheme of the present invention, interlock is mechanical type interlock or electric interlock.
High using mechanical type interlock reliability, easily realized using electric interlock, flexibly simple, and two interlocking are broken
Road device can be installed in diverse location.
Scheme as a further improvement on the present invention, also includes controller, sunlight sensor and radio receiving transmitting module, and first
The auxiliary contact of circuit breaker Q F1 and the second circuit breaker Q F2 are all connected with the signal input part of controller, the two paths of signals of controller
Outfan is connected with the coil circuit of the first circuit breaker Q F1 and the second circuit breaker Q F2 with respectively, sunlight sensor and controller
Data collection terminal mouth is connected, and radio receiving transmitting module is connected with the input/output port of controller.Can be real using sunlight sensor
When gather current sunlight state, and the "on" position of two choppers is controlled by controller according to current sunlight state,
Concurrently set software interlocks；All it is connected with controller using by the auxiliary contact of chopper, controller can be facilitated to grasp in real time
Current "on" position；Remote command transmission and the upload of current "on" position are capable of using radio receiving transmitting module, real
Existing remote-controllable.
The beneficial effects of the present invention is：(1) the PID restraining device adopting the present invention need not be to battery itself or inverter
Improve it is only necessary to be connected on this device in existing bipolar system photovoltaic array, save system large area improved
Cost, and because the PID restraining device of the present invention is only with concatenating chopper in circuit, so not interfering with system yet
Efficiency；(2) it is carved with when ensure that any using interlock and only one chopper is in "on" position, improve light
The safety of volt power supply；(3) by each outfan of the first circuit breaker Q F1 and the second circuit breaker Q F2 according to the present invention connection
Mode is connected, and can switch over the output state of three outlet ports when interlock switches, can effectively suppress light
The PID phenomenon of photovoltaic array.
Brief description
Fig. 1 is the mechanical type interlocking structure schematic diagram of the present invention；
Fig. 2 is the remote control structure schematic diagram of the present invention；
Fig. 3 is the circuit for remotely controlling structural representation of the present invention.
Specific embodiment
As shown in figure 1, the invention provides a kind of PID restraining device of bipolar system photovoltaic array system, including switch board,
First circuit breaker Q F1, the second circuit breaker Q F2 and interlock；Switch board is provided with four inlet wire ports and three outlets
Port, four inlet wire ports respectively with the first passage input of the first circuit breaker Q F1, second channel input, third channel
Input and fourth lane input are connected, three outlet ports respectively with the first passage outfan of the first circuit breaker Q F1,
Second channel outfan and fourth lane outfan are connected；The first passage input of the first circuit breaker Q F1 and the second open circuit
The first passage input of device QF2 is connected, the second channel input of the first circuit breaker Q F1 and the second of the second circuit breaker Q F2
Path input is connected, the third channel input phase of the third channel input of the first circuit breaker Q F1 and the second circuit breaker Q F2
Even, the fourth lane input of the first circuit breaker Q F1 is connected with the fourth lane input of the second circuit breaker Q F2；First open circuit
The first passage outfan of device QF1 is connected with the third channel outfan of the second circuit breaker Q F2, and the second of the first circuit breaker Q F1
Channel output end be connected with the outfan of third channel after first passage outfan and the four-way with the second circuit breaker Q F2 again
Road outfan is connected, the second channel outfan phase of the fourth lane outfan of the first circuit breaker Q F1 and the second circuit breaker Q F2
Even；Interlock is arranged in switch board, and controls the first circuit breaker Q F1 and the second circuit breaker Q F2 to be in interlocking state.
Wherein, interlock is mechanical type interlock or electric interlock.Mechanical type interlock can pass through
Mechanical lever so that when the first circuit breaker Q F1 is closed a floodgate the second circuit breaker Q F2 open a sluice gate, or second when the first circuit breaker Q F1 is opened a sluice gate
Circuit breaker Q F2 is closed a floodgate, and electric interlock is to realize interlocking by the contact of relay and catalyst, and Operation and Maintenance personnel can
Carry out manual switching at the scene.
When installing assembly of the invention, for middle low power system, assembly of the invention can be serially connected in two groups and conflux
The rear class of case, then export ± Ud to photovoltaic DC-to-AC converter, for high-power system, assembly of the invention can be serially connected in two groups of direct currents
The rear class of cabinet, then export ± Ud to photovoltaic DC-to-AC converter；Need four inlet wire ports on switch board in wiring respectively with two
Group header box or the two-way circuit A+ end of two groups of DC cabinets are connected with B- end with A- end and B+ end, with the in three outlet ports
The port that the first passage outfan of one circuit breaker Q F1 is connected connects to+Ud the end of photovoltaic DC-to-AC converter, with the first circuit breaker Q F1
Second channel outfan be connected port connect to-Ud the end of photovoltaic DC-to-AC converter, defeated with the fourth lane of the first circuit breaker Q F1
Go out the connected port in end to connect to earthed system, ± Ud the end of such photovoltaic array is periodically replaced with the 0V end of earthed system, energy
Effectively suppress the PID phenomenon of photovoltaic array.
As shown in Figures 2 and 3, in order to realize remote control function, assembly of the invention also includes controller, sunlight sensor
And radio receiving transmitting module, the auxiliary contact of the first circuit breaker Q F1 and the second circuit breaker Q F2 signal input part phase all with controller
Even, the two paths of signals outfan of controller is connected with the coil circuit of the first circuit breaker Q F1 and the second circuit breaker Q F2 with respectively,
Sunlight sensor is connected with the data collection terminal mouth of controller, and radio receiving transmitting module is connected with the input/output port of controller.
By the numerical value of sunlight sensor Real-time Collection ambient light, when controller judges that ambient light numerical value is less than threshold value, just
Being judged as entering night, realizing the first circuit breaker Q F1 and the automatic switchover of the second circuit breaker Q F2 in can be by controller,
Feed back respective "on" position by the auxiliary contact of the first circuit breaker Q F1 and the second circuit breaker Q F2 simultaneously, and pass through wireless receiving and dispatching
Module uploads in real time and assigns the "on" position to the first circuit breaker Q F1 and the second circuit breaker Q F2 and control order.
Claims (1)
1. a kind of PID restraining device of bipolar system photovoltaic array system it is characterised in that：Including switch board, the first chopper
QF1, the second circuit breaker Q F2 and interlock；Described switch board is provided with four inlet wire ports and three outlet ports, institute
State four inlet wire ports respectively with the first passage input of the first circuit breaker Q F1, second channel input, third channel input
End and fourth lane input are connected, described three outlet ports respectively with the first passage outfan of the first circuit breaker Q F1,
Second channel outfan and fourth lane outfan are connected；The first passage input and second of described first circuit breaker Q F1
The first passage input of circuit breaker Q F2 is connected, the second channel input of described first circuit breaker Q F1 and the second chopper
The second channel input of QF2 is connected, and the of the third channel input of described first circuit breaker Q F1 and the second circuit breaker Q F2
Triple channel input is connected, and the fourth lane input of described first circuit breaker Q F1 is defeated with the fourth lane of the second circuit breaker Q F2
Enter end to be connected；The third channel outfan phase of the first passage outfan of described first circuit breaker Q F1 and the second circuit breaker Q F2
Even, after the second channel outfan of described first circuit breaker Q F1 is connected with the outfan of third channel again with the second circuit breaker Q F2
First passage outfan and fourth lane outfan be connected, the fourth lane outfan of described first circuit breaker Q F1 and the
The second channel outfan of two circuit breaker Q F2 is connected；Described interlock is arranged in switch board, and controls the first chopper
QF1 and the second circuit breaker Q F2 are in interlocking state；
Also include controller, sunlight sensor and radio receiving transmitting module, described first circuit breaker Q F1 and the second circuit breaker Q F2
Auxiliary contact are all connected with the signal input part of controller, the two paths of signals outfan of described controller respectively with the first chopper
The coil circuit of QF1 and the second circuit breaker Q F2 is connected, and described sunlight sensor is connected with the data collection terminal mouth of controller, institute
State radio receiving transmitting module to be connected with the input/output port of controller；
Described interlock is mechanical type interlock or electric interlock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664597.XA CN104579156B (en) | 2014-11-19 | 2014-11-19 | PID inhibition device of bipolar type photovoltaic array system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664597.XA CN104579156B (en) | 2014-11-19 | 2014-11-19 | PID inhibition device of bipolar type photovoltaic array system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104579156A CN104579156A (en) | 2015-04-29 |
| CN104579156B true CN104579156B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410664597.XA Active CN104579156B (en) | 2014-11-19 | 2014-11-19 | PID inhibition device of bipolar type photovoltaic array system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4246801A4 (en) * | 2020-12-18 | 2024-03-13 | Huawei Digital Power Tech Co Ltd | Photovoltaic system and power system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475208A (en) * | 2013-09-18 | 2013-12-25 | 江苏兆伏新能源有限公司 | PID suppression circuit of photovoltaic system |
| CN104467651A (en) * | 2014-08-27 | 2015-03-25 | 江苏永来福实业有限公司 | Topological structure for preventing photovoltaic array PID |
| CN204244168U (en) * | 2014-11-19 | 2015-04-01 | 南京信息职业技术学院 | A kind of PID restraining device of bipolar system photovoltaic array system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011127534A1 (en) * | 2010-04-13 | 2011-10-20 | Great South Land Pty. Limited | Electronic feedback control |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475208A (en) * | 2013-09-18 | 2013-12-25 | 江苏兆伏新能源有限公司 | PID suppression circuit of photovoltaic system |
| CN104467651A (en) * | 2014-08-27 | 2015-03-25 | 江苏永来福实业有限公司 | Topological structure for preventing photovoltaic array PID |
| CN204244168U (en) * | 2014-11-19 | 2015-04-01 | 南京信息职业技术学院 | A kind of PID restraining device of bipolar system photovoltaic array system |
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Effective date of registration: 20191122 Address after: 241000 office building a, north side of Wuyishan Road, Wuhu Economic and Technological Development Zone, Wuhu City, Anhui Province Patentee after: Xinyi energy technology (Wuhu) Co., Ltd. Address before: Nanjing City, Jiangsu province 210023 City Xianlin University No. 99 Patentee before: Nanjing College of Information Technology |
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