CN101882784A - Lightning protection method for solar cell panel - Google Patents
Lightning protection method for solar cell panel Download PDFInfo
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- CN101882784A CN101882784A CN2010102138802A CN201010213880A CN101882784A CN 101882784 A CN101882784 A CN 101882784A CN 2010102138802 A CN2010102138802 A CN 2010102138802A CN 201010213880 A CN201010213880 A CN 201010213880A CN 101882784 A CN101882784 A CN 101882784A
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- stabilizing module
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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
Abstract
The invention relates to a lightning protection method for a solar cell panel, which aims to solve the problems that the conventional solar cell panel is easy to damage by lightning. The two ports of the solar cell panel have the lightning protection function and consist of a lightning surge bleeding module, high-frequency suppressing modules, a transient state suppressing voltage-stabilizing module, a clamping voltage-stabilizing module and a backflow protecting module, which can be classified into two kinds of structures. The lightning surge bleeding module with large throughput carries out bleeding and equipotential on lightning surge, and the high-frequency suppressing modules, the transient state suppressing voltage-stabilizing module and the clamping voltage-stabilizing module effectively protect the solar cell panel to stabilize and clamp circuits under the impact of the lightning surge so as to ensure normal work of the solar cell panel.
Description
Technical field
The present invention relates to a kind of lightening arresting method, especially a kind of method of solar panel lightning protection.
Background technology
The energy is the most important material base that the national economic development and living standards of the people improve.The supply of the whole world energy at present mainly relies on fossil energies such as oil, natural gas, coal, but the resource-constrained of fossil energy and exploitation also can have environmental pollution problems when using, seriously restricting society and economic sustainable development, the development and utilization of therefore accelerating regenerative resource is important channel and the measure that solves world energy sources and environmental problem.Solar energy is the abundantest regenerative resource of resource, and is in short supply day by day at current global fossil energy, and under the situation that price skyrockets, many countries take preferential policy to encourage the development and application of heliotechnics.Solar powered technology is applied to high-end application scenarios such as aviation exploration the earliest as a kind of new and high technology, and along with the promotion of various countries, solar powered technology has also obtained the development of making rapid progress.New forms of energy are planned from 2009 to the year two thousand twenty in China's 15 ENERGY PLANNING, integrated planning will be above 3 trillion yuan to the year two thousand twenty new forms of energy industry total investment at home, solar energy will become in the coming years of the energy industry field with fastest developing speed, one of novel energy that new technology is used.Solar powered part generally is divided into the two large divisions: 1, solar panel: solar panel is the core in the solar power system, also is to be worth the highest part in the solar power system.2, inverter: main effect is that the direct current energy that solar power system is sent converts AC energy to.Just occur in the market too can positive electric power system lightning protection device generally be divided into two classes, a class is a siganl thunder-proof device, is installed in the lightning protection that is used for signal line on the signal line; One class is a lightning protection for power supply, is installed in the lightning protection that is used for power circuit on the collection bus.In, single solar panel general utility functions collection bus distance and all be mounted in roof, field etc. and be subject to lightning strike area in the large-scale solar electric power supply system, therefore lightning protection for power supply often only is installed on bus has only been played protection, but can't play effect the solar panel lightning protection to rear end equipment such as inverter, storage batterys.
The situation that solar panel is damaged by being struck by lightning has following four kinds:
1, the induction lightening surge of PN junction in the solar panel
As shown in Figure 1, conductive layer 1, light absorbing zone 2, dorsum electrode layer 3 are formed the basic structure of solar panel.When near appearance was struck by lightning, the PN junction on the solar panel produced lightning surge under the effect of Lightning Electromagnetic Pulse electromagnetic field, because the voltage of PN junction is very low, therefore very easily by this lightning surge of sensing institute punch through damage.
2, the shielding of direct lightning strike
At present, the solar panel in the solar electric power supply system all is mounted in roof or open-air spacious place, so solar panel is easy to suffer the shielding of direct lightning strike.The shielding of direct lightning strike generally can be hit on the metal edge frame of solar panel, thereby produce Lightning Electromagnetic Pulse solar panel is damaged.
3, earth potential counterattack
When thunder and lightning is made lightning rod at solar electric power supply system, can cause the current potential lifting of earth mat,, thereby go out terrain, cause solar panel to damage compiling the situation of circuit counterattack discharge simultaneously because the solar powered current potential that compiles on the circuit is relatively very low.
4, solar panel compiles circuit and the induction lightening surge occurs
Since solar electric power supply system to compile circuit generally longer, the induction lightening surge appears easily.Solar panel does not have the lightning protection device protection when compiling circuit and lightning surge occurs, therefore occurs easily damaging.
Summary of the invention
The new method that the purpose of this invention is to provide a kind of effective solar panel lightning protection.It can be effectively suppresses the lightning surge on shielding, counterattack and the circuit of the induction lightening surge that occurs on the PN junction, direct lightning strike, and the protection solar panel.
The technical scheme that the present invention takes:
The present invention is a kind of method that is exclusively used at the solar panel lightning protection, this method has adopted earial drainage, equipotential, high-frequency suppressing, means such as voltage stabilizing and clamper realize the purpose of solar panel lightning protection, part comprises the lightning surge module of releasing, high-frequency suppressing modules, the transient state suppressing Voltage stabilizing module, clamper Voltage stabilizing module and refluence protection module, its feature can be divided into two class formations: a class be first lightning surge release module 4 with just, the input on negative wire road is connected respectively with ground, again just, connect respectively on the negative wire road and insert high- frequency suppressing modules 5,6, between circuit, insert transient state suppressing Voltage stabilizing module 7 then, circuit after the process transient state suppressing Voltage stabilizing module 7 is connected and is inserted high- frequency suppressing modules 8,9, insert clamper Voltage stabilizing module 10 and refluence protection module 11 between the final online road; Another kind of is that the lightning surge module 12 of releasing is connected respectively with ground with the input of positive and negative circuit; positive and negative then circuit is connected respectively and is inserted high- frequency suppressing modules 13,14, inserts transient state suppressing Voltage stabilizing module 15 and refluence protection module 16 at last again between circuit.
Characteristics of the present invention and advantage:
The present invention is a kind of new method of solar panel lightning protection; it is according to the characteristics of solar panel; adopted with earial drainage, equipotential; the lightning protection of the solar panel that means such as high-frequency suppressing, voltage stabilizing, clamper realize; effectively to the shielding of the induction lightening surge that occurs on the PN junction, direct lightning strike, strike back and the lightning surge that compiles on the circuit protects; thereby the protection solar panel is filled up the blank of domestic and international solar panel lightning protection.
Description of drawings
Fig. 1 is the conductive layer line influence lightning surge schematic diagram on the solar panel.
Fig. 2 is principle one figure of the inventive method.
Fig. 3 is principle two figure of the inventive method.
Fig. 4 is the schematic diagram of the induction lightening surge test 1 of PN junction in the analog solar cell panel.
Fig. 5 is the schematic diagram of simulation direct lightning strike shielding test 1.
Fig. 6 is simulation counterattack thunder and the schematic diagram that compiles the lightning surge test 1 on the circuit.
Fig. 7 is the schematic diagram of the induction lightening surge test 2 of PN junction in the analog solar cell panel.
Fig. 8 is the schematic diagram of simulation direct lightning strike shielding test 2.
Fig. 9 is simulation counterattack thunder and the schematic diagram that compiles the lightning surge test 2 on the circuit.
Embodiment
The present invention is two port lightning Protection Design, adopt earlier the lightning surge of the big through-current capacity module of releasing, its effect is that lightning surge is released and equipotential, adopt high-frequency suppressing modules, transient state suppressing Voltage stabilizing module and clamper Voltage stabilizing module under the impact of lightning surge, circuit to be carried out voltage stabilizing then and clamper is effectively protected solar panel, guarantee the operate as normal of solar panel.Can be divided into two class formations: a class is that the first lightning surge module 4 of releasing is connected respectively with ground with the input of positive and negative circuit, on positive and negative circuit, connect respectively again and insert high- frequency suppressing modules 5,6, between circuit, insert transient state suppressing Voltage stabilizing module 7 then, circuit after the process transient state suppressing Voltage stabilizing module 7 is connected and is inserted high- frequency suppressing modules 8,9, inserts clamper Voltage stabilizing module 10 and refluence protection module 11 between the final online road; Another kind of is that the lightning surge module 12 of releasing is connected respectively with ground with the input of positive and negative circuit; positive and negative then circuit is connected respectively and is inserted high- frequency suppressing modules 13,14, inserts transient state suppressing Voltage stabilizing module 15 and refluence protection module 16 at last again between circuit.
Principle one of the present invention as shown in Figure 2; when the PN junction of solar panel produces the induction lightening surge in lightening pulse magnetic field; PN junction by 11 pairs of solar panels of clamper Voltage stabilizing module carries out effective two-way clamper voltage stabilizing; thereby the PN junction of protection solar panel is not damaged; suffer the shielding of direct lightning strike when solar panel; the counterattack and compile when lightning surge occurring on the circuit; released and equipotential by the lightning surge module 4 of releasing before this; then by high-frequency suppressing modules 5; 6; 8; 9 lightning surge is suppressed; again by 10 pairs of solar panels of transient state suppressing Voltage stabilizing module 7 clamper Voltage stabilizing modules carry out voltage stabilizing and clamper, thereby solar panel is played effective lightning protection.
Principle two as shown in Figure 3; when the PN junction of solar panel produces the induction lightening surge in lightening pulse magnetic field; PN junction by transient state suppressing Voltage stabilizing module 15 and 16 pairs of solar panels of refluence protection module carries out effective two-way clamper voltage stabilizing; thereby the PN junction of protection solar panel is not damaged; suffer the shielding of direct lightning strike when solar panel; the counterattack and compile when lightning surge occurring on the circuit; released and equipotential by the lightning surge module 12 of releasing before this; then by high-frequency suppressing modules 13; 14 lightning surge is suppressed; carry out voltage stabilizing by 15 pairs of solar panels of transient state suppressing Voltage stabilizing module again, thereby solar panel is played effective lightning protection.
After rush of current and voltge surge test, determine:
(1) determine: the lightning surge module 4,12 of releasing adopts the components and parts of the lightning surge of releasing, the solar panel output voltage peak value of its direct current turn-on voltage 〉=1.2 times;
(2) determine: the inductance value 〉=5uH of high- frequency suppressing modules 5,6,8,9,13,14, the solar panel output current peak value of its load current value 〉=1.2 times;
(3) determine: the direct current of transient state suppressing Voltage stabilizing module 7,15 lead can magnitude of voltage 〉=1.2 times solar panel output voltage peak value;
(4) determine: the direct current of clamper Voltage stabilizing module 10 lead can magnitude of voltage 〉=1.2 times solar panel output voltage peak value.
Test principle is tested the solar panel 16 of usefulness as shown in Figure 4.Under the breadboard full load situation, use 1,200,000 volts of voltge surge equipment to carry out the induction lightening surge test of PN junction in the analog solar cell panel.Spray point 17 dodges pin 18 (lightning rod) 1m at interval with connecing, connecing the height that dodges pin 18 is 1.2m, solar panel 16 is parallel to the ground, solar panel 16 and ground distance 1m, the metal outer rim of solar panel 16 is dodged pin 18 distances and is 100mm with connecing, the metal shell of solar panel 16, load 19 and connect and dodge pin 18 and all carry out ground connection.Test number (TN): 1 time, experimental phenomena: the test surge voltage is 490,000 volts, and the simulation direct lightning strike goes out from spray point, hits to connect to dodge on the pin and releases into ground then.Result of the test: solar panel 16 damages.
Test principle is tested the solar panel 20 of usefulness as shown in Figure 5.Under the breadboard full load situation, use 1,200,000 volts of voltge surge equipment to simulate direct lightning strike shielding test.Spray point 21 is 1m with the distance at the metal edge frame angle of solar panel 20, and the metal outer rim of solar panel 20 and the metal shell of load 22 all carry out ground connection.Test number (TN): 1 time, experimental phenomena: testing average surge voltage is 500,000 volts, and solar panel is released into ground after the simulation direct lightning strike is directly got to metal edge frame when the shielding of simulation direct lightning strike occurring.Result of the test: solar panel 20 damages.
Test principle is tested the solar panel 23 of usefulness as shown in Figure 6.Under the breadboard full load situation, use 8/20uS rush of current equipment 24 to simulate the earth potential counterattack and compile lightning surge test on the circuit.The electrode line 25 of solar panel 23 is connected with the truncation Line 26 of 8/20uS rush of current equipment, and the metal outer rim of solar panel 23 is all carried out ground connection.Test number (TN): electrode line 25 is impacted 1 time, wherein impact 2kA (8/20uS) 11 times. experimental phenomena: spark phenomenon appears in the surface of solar panel 23.Result of the test: solar panel 23 damages.
Test principle as shown in Figure 7, lightning protection device 27 is lightning protection devices of making according to the inventive method, the solar panel 28 of test usefulness.Under the breadboard full load situation, use 1,200,000 volts of voltge surge equipment to carry out the induction lightening surge test of PN junction in the analog solar cell panel.Spray point 29 dodges pin 30 (lightning rod) 1m at interval with connecing, connecing the height that dodges pin 30 is 1.2m, solar panel 28 is parallel to the ground, solar panel 28 and ground distance 1m, the metal outer rim of solar panel 28 is dodged pin 30 distances and is 100mm with connecing, and the metal shell of load 31, connects the ground wire that dodges pin 30 and lightning protection device 27 and all carries out ground connection.Test number (TN): 10 times, experimental phenomena: testing average surge voltage is 500,000 volts, and the simulation direct lightning strike goes out from spray point, hits to connect to dodge on the pin and releases into ground then.Result of the test: lightning protection device 27 and solar panel 28 do not damage.
Test principle as shown in Figure 8, lightning protection device 32 is lightning protection devices of making according to the inventive method, the solar panel 33 of test usefulness.Under the breadboard full load situation, use 1,200,000 volts of voltge surge equipment to simulate direct lightning strike shielding test.Spray point 34 is 1m with the distance at the metal edge frame angle of solar panel 33, and the ground wire of the metal outer rim of solar panel 33, the metal shell of load 35 and lightning protection device 32 all carries out ground connection.Test number (TN): 10 times, experimental phenomena: testing average surge voltage is 500,000 volts, and solar panel is released into ground after the simulation direct lightning strike is directly got to metal edge frame when the shielding of simulation direct lightning strike occurring.Result of the test: lightning protection device 32 and solar cell 33 do not damage.
Test principle as shown in Figure 9, lightning protection device 36 is lightning protection devices of making according to the inventive method, the solar panel 37 of test usefulness.Under the breadboard full load situation, use 8/20uS rush of current equipment 38 to simulate counterattack thunder and the lightning surge test that compiles on the circuit.The electrode line 39 of the input of lightning protection device 40 (or negative level line 40) is connected with the truncation Line 41 of 8/20uS rush of current equipment, and the metal outer rim of solar panel 37 and the ground wire of lightning protection device 36 all carry out ground connection.Test number (TN): electrode line 39 (or negative level line 40) respectively impacts 12 times, wherein impacts 20kA (8/20uS) 11 times, 40kA (8/20uS) 1 time. experimental phenomena: the no obvious phenomenon in surface.Result of the test: lightning protection device 36 and solar panel 37 do not damage.
Claims (5)
1. the method for a solar panel lightning protection, it is characterized in that: adopted earial drainage, equipotential, high-frequency suppressing, voltage stabilizing and clamper means realize the lightning protection of solar panel, part comprises the lightning surge module of releasing, high-frequency suppressing modules, the transient state suppressing Voltage stabilizing module, clamper Voltage stabilizing module and refluence protection module, can be divided into two class formations: a class be first lightning surge release module (4) with just, the input on negative wire road is connected respectively with ground, again just, connect respectively on the negative wire road and insert high-frequency suppressing modules (5), (6), between circuit, insert transient state suppressing Voltage stabilizing module (7) then, process transient state suppressing Voltage stabilizing module (7) circuit is afterwards connected and is inserted high-frequency suppressing modules (8), (9), insert clamper Voltage stabilizing module (10) and refluence protection module (11) between the final online road; Another kind of is that the lightning surge module (12) of releasing is connected respectively with ground with the input of positive and negative circuit; positive and negative then circuit is connected respectively and is inserted high-frequency suppressing modules (13), (14), inserts transient state suppressing Voltage stabilizing module (15) and refluence protection module (16) at last again between circuit.
2. the method for solar panel lightning protection according to claim 1, it is characterized in that: release module (4), (12) of lightning surge adopts the components and parts of the lightning surge of releasing, the solar panel output voltage peak value of its direct current turn-on voltage 〉=1.2 times.
3. the method for solar panel lightning protection according to claim 1, it is characterized in that: the inductance value 〉=5uH of high-frequency suppressing modules (5), (6), (8), (9), (13), (14), the solar panel output current peak value of its load current value 〉=1.2 times.
4. the method for solar panel lightning protection according to claim 1 is characterized in that: the direct current of transient state suppressing Voltage stabilizing module (7), (15) lead can magnitude of voltage 〉=1.2 times solar panel output voltage peak value.
5. the method for solar panel lightning protection according to claim 1 is characterized in that: the direct current of clamper Voltage stabilizing module (10) lead can magnitude of voltage 〉=1.2 times solar panel output voltage peak value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102138802A CN101882784A (en) | 2010-06-30 | 2010-06-30 | Lightning protection method for solar cell panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102138802A CN101882784A (en) | 2010-06-30 | 2010-06-30 | Lightning protection method for solar cell panel |
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| CN101882784A true CN101882784A (en) | 2010-11-10 |
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| CN2010102138802A Pending CN101882784A (en) | 2010-06-30 | 2010-06-30 | Lightning protection method for solar cell panel |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293917Y (en) * | 1997-04-22 | 1998-10-07 | 钟庆承 | Special lightning protector for wire communication terminal equipment |
| CN1829033A (en) * | 2005-03-04 | 2006-09-06 | 昆山双桥传感器测控技术有限公司 | Lightningproof circuit and immersion type piezoresistance liquid level transmitter with the same |
| CN101510737A (en) * | 2008-02-15 | 2009-08-19 | 刘文启 | Passive triggering type converting device from DE to AC electric energy |
-
2010
- 2010-06-30 CN CN2010102138802A patent/CN101882784A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293917Y (en) * | 1997-04-22 | 1998-10-07 | 钟庆承 | Special lightning protector for wire communication terminal equipment |
| CN1829033A (en) * | 2005-03-04 | 2006-09-06 | 昆山双桥传感器测控技术有限公司 | Lightningproof circuit and immersion type piezoresistance liquid level transmitter with the same |
| CN101510737A (en) * | 2008-02-15 | 2009-08-19 | 刘文启 | Passive triggering type converting device from DE to AC electric energy |
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Application publication date: 20101110 |