CN104579156A - 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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- CN104579156A CN104579156A CN201410664597.XA CN201410664597A CN104579156A CN 104579156 A CN104579156 A CN 104579156A CN 201410664597 A CN201410664597 A CN 201410664597A CN 104579156 A CN104579156 A CN 104579156A
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- circuit breaker
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- pid
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- 230000005764 inhibitory process Effects 0.000 title abstract 4
- 230000000452 restraining effect Effects 0.000 claims description 11
- 230000010287 polarization Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 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
- 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
- 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
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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
- 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
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 a kind of PID restraining device for bipolar system photovoltaic array system.
Background technology
Along with the change of world energy sources general layout, the focus that photovoltaic generation day by day becomes various countries' further investigation, greatly develops.PID (Potential Induced Degradation, current potential brings out decay) phenomenon or Surface Polarization (Surface Polarization) are the unfavorable factors that in current photovoltaic industry, affects crystal silicon cell assembly efficiency utilization.When photovoltaic module normally uses, there is positive voltage or over the ground negative voltage over the ground in system, cause assembly surface charge buildup and cause power attenuation, in the short time, as occurred some months or one or two years, assembly power output sharply reduces phenomenon.For the PID phenomenon that photovoltaic array is exclusive, at battery surface or one deck silica dioxide coating with holes between passivation layer and battery, can be added, form a turning circuit and prevent harmful polarization, but this method increase battery manufacture cost and reduce the efficiency of battery to a certain extent.Also can use the inverter of assembly voltage to earth or use plus earth module and band isolating transformer in resistance change system, but this method makes the use of photovoltaic module there is limitation, and band isolating transformer had both added cost and had also reduced system effectiveness.
Summary of the invention
The technical problem to be solved in the present invention is existing photovoltaic system when suppressing PID phenomenon, needs to transform battery itself or inverter, not only increase cost but also also reduce system effectiveness.
In order to solve the problems of the technologies described above, the invention provides a kind of PID restraining device of bipolar system photovoltaic array system, comprising control cubicle, the first circuit breaker Q F1, the second circuit breaker Q F2 and interlock; Control cubicle is provided with four inlet wire ports and three outlet ports, four inlet wire ports are connected with the first passage input of the first circuit breaker Q F1, second channel input, third channel input and four-way input respectively, and three outlet ports are connected with the first passage output of the first circuit breaker Q F1, second channel output and four-way output respectively; The first passage input of the first circuit breaker Q F1 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 is connected with the second channel input of the second circuit breaker Q F2, the third channel input of the first circuit breaker Q F1 is connected with the third channel input of the second circuit breaker Q F2, and the four-way input of the first circuit breaker Q F1 is connected with the four-way input of the second circuit breaker Q F2; The first passage output of the first circuit breaker Q F1 is connected with the third channel output of the second circuit breaker Q F2, be connected with the first passage output of the second circuit breaker Q F2 and four-way output after the second channel output of the first circuit breaker Q F1 is connected with the output of third channel, the four-way output of the first circuit breaker Q F1 is connected with the second channel output of the second circuit breaker Q F2 again; Interlock is arranged in control cubicle, and controls the first circuit breaker Q F1 and the second circuit breaker Q F2 is interlocking state.
Adopt PID restraining device of the present invention without the need to improving battery itself or inverter, this device is only needed to be connected in existing bipolar system photovoltaic array, save the cost that system large area is improved, and be connected in series circuit breaker in circuit because PID restraining device of the present invention only have employed, so also can not the efficiency of influential system; Be carved with and only have a circuit breaker to be in "on" position when adopting interlock to ensure any, improve the fail safe of photovoltaic power supply; First circuit breaker Q F1 is connected according to connected mode of the present invention with each output of the second circuit breaker Q F2, when interlock switches, the output state of three outlet ports can be switched, effectively can suppress the PID phenomenon of photovoltaic array.
As further restriction scheme of the present invention, interlock is mechanical type interlock or electric interlock.Adopt mechanical type interlock reliability high, adopt electric interlock easily to realize, simple flexibly, and two circuit breakers of interlocking can be installed at diverse location.
Scheme as a further improvement on the present invention, also comprise controller, sunlight sensor and radio receiving transmitting module, first circuit breaker Q F1 is connected with the signal input part of controller with the auxiliary contact of the second circuit breaker Q F2, the two paths of signals output of controller be connected with the coil circuit of the second circuit breaker Q F2 with the first circuit breaker Q F1 respectively, sunlight sensor is connected with the data acquisition port of controller, and radio receiving transmitting module is connected with the input/output port of controller.Adopt sunlight sensor can the current sunlight state of Real-time Collection, and controlled the "on" position of two circuit breakers according to current sunlight state by controller, setting software interlocking simultaneously; Adopt and the auxiliary contact of circuit breaker are all connected with controller, controller can be facilitated to grasp current "on" position in real time; Adopt radio receiving transmitting module can realize remote command transmission and the uploading of current "on" position, realize remote-controllable.
Beneficial effect of the present invention is: (1) adopts PID restraining device of the present invention without the need to improving battery itself or inverter, this device is only needed to be connected in existing bipolar system photovoltaic array, save the cost that system large area is improved, and be connected in series circuit breaker in circuit because PID restraining device of the present invention only have employed, so also can not the efficiency of influential system; (2) be carved with and only have a circuit breaker to be in "on" position when adopting interlock to ensure any, improve the fail safe of photovoltaic power supply; (3) the first circuit breaker Q F1 is connected according to connected mode of the present invention with each output of the second circuit breaker Q F2, when interlock switches, the output state of three outlet ports can be switched, effectively can suppress the PID phenomenon of photovoltaic array.
Accompanying drawing explanation
Fig. 1 is mechanical type interlocking structure schematic diagram of the present invention;
Fig. 2 is remote control structure schematic diagram of the present invention;
Fig. 3 is circuit for remotely controlling structural representation of the present invention.
Embodiment
As shown in Figure 1, the invention provides a kind of PID restraining device of bipolar system photovoltaic array system, comprise control cubicle, the first circuit breaker Q F1, the second circuit breaker Q F2 and interlock; Control cubicle is provided with four inlet wire ports and three outlet ports, four inlet wire ports are connected with the first passage input of the first circuit breaker Q F1, second channel input, third channel input and four-way input respectively, and three outlet ports are connected with the first passage output of the first circuit breaker Q F1, second channel output and four-way output respectively; The first passage input of the first circuit breaker Q F1 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 is connected with the second channel input of the second circuit breaker Q F2, the third channel input of the first circuit breaker Q F1 is connected with the third channel input of the second circuit breaker Q F2, and the four-way input of the first circuit breaker Q F1 is connected with the four-way input of the second circuit breaker Q F2; The first passage output of the first circuit breaker Q F1 is connected with the third channel output of the second circuit breaker Q F2, be connected with the first passage output of the second circuit breaker Q F2 and four-way output after the second channel output of the first circuit breaker Q F1 is connected with the output of third channel, the four-way output of the first circuit breaker Q F1 is connected with the second channel output of the second circuit breaker Q F2 again; Interlock is arranged in control cubicle, and controls the first circuit breaker Q F1 and the second circuit breaker Q F2 is interlocking state.
Wherein, interlock is mechanical type interlock or electric interlock.Mechanical type interlock can pass through mechanical lever, when first circuit breaker Q F1 is closed a floodgate, the second circuit breaker Q F2 opens a sluice gate, or the second circuit breaker Q F2 closes a floodgate when the first circuit breaker Q F1 opens a sluice gate, electric interlock realizes interlocking by the contact of relay and contactor, and Operation and Maintenance personnel can carry out manual switchover at the scene.
When installing device of the present invention, for middle low power system, can by the rear class of device serial connection of the present invention at two groups of header boxs, export again ± Ud is to photovoltaic DC-to-AC converter, for high-power system, can by the rear class of device serial connection of the present invention at two groups of DC cabinets, then to export ± Ud is to photovoltaic DC-to-AC converter, need when wiring the inlet wire port of four on control cubicle to hold with the two-way circuit A+ of two groups of header boxs or two groups of DC cabinets respectively and to hold with A-and B+ holds to hold with B-and is connected, + the Ud that the port be connected with the first passage output of the first circuit breaker Q F1 in three outlet ports is connected to photovoltaic DC-to-AC converter holds,-the Ud that the port be connected with the second channel output of the first circuit breaker Q F1 is connected to photovoltaic DC-to-AC converter holds, the port be connected with the four-way output of the first circuit breaker Q F1 is connected to grounding system, such photovoltaic array ± Ud end is held alternately regular with the 0V of grounding system, effectively can suppress the PID phenomenon of photovoltaic array.
As shown in Figures 2 and 3, in order to realize remote control function, device of the present invention also comprises controller, sunlight sensor and radio receiving transmitting module, first circuit breaker Q F1 is connected with the signal input part of controller with the auxiliary contact of the second circuit breaker Q F2, the two paths of signals output of controller be connected with the coil circuit of the second circuit breaker Q F2 with the first circuit breaker Q F1 respectively, sunlight sensor is connected with the data acquisition port 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 surround lighting, when controller judges surround lighting numerical value lower than threshold value, just be judged as entering night, so the automatic switchover of the first circuit breaker Q F1 and the second circuit breaker Q F2 can be realized 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 the "on" position uploaded in real time by radio receiving transmitting module and assign the first circuit breaker Q F1 and the second circuit breaker Q F2 and control order.
Claims (3)
1. a PID restraining device for bipolar system photovoltaic array system, is characterized in that: comprise control cubicle, the first circuit breaker Q F1, the second circuit breaker Q F2 and interlock; Described control cubicle is provided with four inlet wire ports and three outlet ports, described four inlet wire ports are connected with the first passage input of the first circuit breaker Q F1, second channel input, third channel input and four-way input respectively, and described three outlet ports are connected with the first passage output of the first circuit breaker Q F1, second channel output and four-way output respectively; The first passage input of described first circuit breaker Q F1 is connected with the first passage input of the second circuit breaker Q F2, the second channel input of described first circuit breaker Q F1 is connected with the second channel input of the second circuit breaker Q F2, the third channel input of described first circuit breaker Q F1 is connected with the third channel input of the second circuit breaker Q F2, and the four-way input of described first circuit breaker Q F1 is connected with the four-way input of the second circuit breaker Q F2; The first passage output of described first circuit breaker Q F1 is connected with the third channel output of the second circuit breaker Q F2, be connected with the first passage output of the second circuit breaker Q F2 and four-way output after the second channel output of described first circuit breaker Q F1 is connected with the output of third channel, the described four-way output of the first circuit breaker Q F1 is connected with the second channel output of the second circuit breaker Q F2 again; Described interlock is arranged in control cubicle, and controls the first circuit breaker Q F1 and the second circuit breaker Q F2 is interlocking state.
2. the PID restraining device of bipolar system photovoltaic array system according to claim 1, is characterized in that: described interlock is mechanical type interlock or electric interlock.
3. the PID restraining device of bipolar system photovoltaic array system according to claim 1, it is characterized in that: also comprise controller, sunlight sensor and radio receiving transmitting module, described first circuit breaker Q F1 is connected with the signal input part of controller with the auxiliary contact of the second circuit breaker Q F2, the two paths of signals output of described controller be connected with the coil circuit of the second circuit breaker Q F2 with the first circuit breaker Q F1 respectively, described sunlight sensor is connected with the data acquisition port of controller, and described radio receiving transmitting module is connected with the input/output port of controller.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN104579156A true CN104579156A (en) | 2015-04-29 |
| CN104579156B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4246801A4 (en) * | 2020-12-18 | 2024-03-13 | Huawei Digital Power Tech Co Ltd | Photovoltaic system and power system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011127534A1 (en) * | 2010-04-13 | 2011-10-20 | Great South Land Pty. Limited | Electronic feedback control |
| 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 |
-
2014
- 2014-11-19 CN CN201410664597.XA patent/CN104579156B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011127534A1 (en) * | 2010-04-13 | 2011-10-20 | Great South Land Pty. Limited | Electronic feedback control |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4246801A4 (en) * | 2020-12-18 | 2024-03-13 | Huawei Digital Power Tech Co Ltd | Photovoltaic system and power system |
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| CN104579156B (en) | 2017-02-22 |
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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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