CN206226006U - A kind of photovoltaic lightningproof circuit - Google Patents
A kind of photovoltaic lightningproof circuit Download PDFInfo
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- CN206226006U CN206226006U CN201621256701.2U CN201621256701U CN206226006U CN 206226006 U CN206226006 U CN 206226006U CN 201621256701 U CN201621256701 U CN 201621256701U CN 206226006 U CN206226006 U CN 206226006U
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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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Abstract
一种光伏防雷电路，包括设置在光伏发电板和光伏并网逆变器之间的接地防雷电路和设置在市电和光伏并网逆变器之间的等电位防雷电路；所述接地防雷电路包括连接在光伏发电板正负极之间的压敏电阻MOV1，在压敏电阻MOV1的两端并联有依次串联的压敏电阻MOV2和MOV3，在MOV2和MOV3的连接端连接有一接地设置的放电管GDT1。本实用新型采用上述结构，采用双重防雷电路设计，采用双重防雷电路设计，当遇到雷电，对于发电板端采用具有两级吸收浪涌作用的接地防雷电路，对于市电部分，采用等电位防雷电路，充分保证了光伏发电设备的安全使用。
A photovoltaic lightning protection circuit, including a grounding lightning protection circuit arranged between a photovoltaic power generation panel and a photovoltaic grid-connected inverter and an equipotential lightning protection circuit arranged between a commercial power supply and a photovoltaic grid-connected inverter; the The grounding lightning protection circuit includes a varistor MOV1 connected between the positive and negative poles of the photovoltaic power generation panel. The two ends of the varistor MOV1 are connected in parallel with the varistors MOV2 and MOV3 in series. A Grounded discharge tube GDT1. The utility model adopts the above structure, adopts double lightning protection circuit design, adopts double lightning protection circuit design. The equipotential lightning protection circuit fully guarantees the safe use of photovoltaic power generation equipment.
Description
技术领域：Technical field:
本实用新型涉及一种光伏防雷电路。The utility model relates to a photovoltaic lightning protection circuit.
背景技术：Background technique:
家用光伏发电设备的光伏发电板都设置在户外，在雷雨天气极易受到雷电的侵袭，一旦雷电击中光伏发电板，就会对整个光伏太阳能发电设备造成损害，严重影响设备的使用寿命。目前，对于光伏发电设备，雷电的影响不仅来自光伏发电板，也来自市电方面，如果仅仅设置光伏发电板得防雷电路无法避免市电对光伏发电设备的影响，从而带来极大的安全隐患。The photovoltaic power generation panels of household photovoltaic power generation equipment are all installed outdoors, and are extremely vulnerable to lightning in thunderstorm weather. Once lightning strikes the photovoltaic power generation panels, it will cause damage to the entire photovoltaic solar power generation equipment and seriously affect the service life of the equipment. At present, for photovoltaic power generation equipment, the influence of lightning not only comes from photovoltaic power generation panels, but also from the mains. If only the lightning protection circuit of photovoltaic power generation panels is installed, the impact of mains power on photovoltaic power generation equipment cannot be avoided, which will bring great safety. Hidden danger.
实用新型内容：Utility model content:
本实用新型提供了一种光伏防雷电路，它结构设计合理，采用双重防雷电路设计，当遇到雷电，对于发电板端采用具有两级吸收浪涌作用的接地防雷电路，对于市电部分，采用等电位防雷电路，充分保证了光伏发电设备的安全使用，解决了现有技术中存在的问题。The utility model provides a photovoltaic lightning protection circuit, which has a reasonable structural design and adopts a double lightning protection circuit design. In the part, an equipotential lightning protection circuit is adopted, which fully guarantees the safe use of photovoltaic power generation equipment and solves the problems existing in the prior art.
本实用新型为解决上述技术问题所采用的技术方案是：The technical scheme that the utility model adopts for solving the problems of the technologies described above is:
一种光伏防雷电路，包括设置在光伏发电板和光伏并网逆变器之间的接地防雷电路和设置在市电和光伏并网逆变器之间的等电位防雷电路；A photovoltaic lightning protection circuit, including a grounding lightning protection circuit arranged between a photovoltaic power generation panel and a photovoltaic grid-connected inverter, and an equipotential lightning protection circuit arranged between a commercial power supply and a photovoltaic grid-connected inverter;
所述接地防雷电路包括连接在光伏发电板正负极之间的压敏电阻MOV1，在压敏电阻MOV1的两端并联有依次串联的压敏电阻MOV2和MOV3，在MOV2和MOV3的连接端连接有一接地设置的放电管GDT1；在光伏发电板的正负两极之间还并联有瞬态抑制二极管TVS1，在瞬态抑制二极管TVS1和光伏发电板的正极之间设有电感L1，在瞬态抑制二极管TVS2和光伏发电板的负极之间设有电感L2,在瞬态抑制二极管TVS1的两端并联有相互串联的瞬态二极管TVS2和瞬态二极管TVS3，相互串联的瞬态二极管TVS2和瞬态二极管TVS3并联在光伏并网逆变器上，瞬态二极管TVS2和瞬态二极管TVS3的连接端接地设置；The grounding lightning protection circuit includes a piezoresistor MOV1 connected between the positive and negative poles of the photovoltaic power generation panel, and the two ends of the piezoresistor MOV1 are connected in parallel with piezoresistors MOV2 and MOV3 in series, and the connection ends of MOV2 and MOV3 There is a discharge tube GDT1 connected to the ground; a transient suppression diode TVS1 is connected in parallel between the positive and negative poles of the photovoltaic power generation panel, and an inductor L1 is provided between the transient suppression diode TVS1 and the positive pole of the photovoltaic power generation panel. An inductance L2 is set between the suppression diode TVS2 and the negative pole of the photovoltaic power generation panel, and the transient diode TVS2 and the transient diode TVS3 are connected in parallel at both ends of the transient suppression diode TVS1, and the transient diode TVS2 and the transient diode TVS2 are connected in series. The diode TVS3 is connected in parallel to the photovoltaic grid-connected inverter, and the connection terminals of the transient diode TVS2 and the transient diode TVS3 are grounded;
所述等电位防雷电路包括设置在相互并联的压敏电阻MOV4,MOV5,MOV6和MOV7，其中一并联端通过开关K4与市电的火线相连，又与光伏并网逆变器的正极相连，另一并联端通过一放电管GDT2与市电的零线相连，又通过放电管GDT2与光伏并网逆变器的负极相连。The equipotential lightning protection circuit includes piezoresistors MOV4, MOV5, MOV6 and MOV7 arranged in parallel with each other, one of the parallel terminals is connected to the live wire of the mains through the switch K4, and is connected to the positive pole of the photovoltaic grid-connected inverter. The other parallel terminal is connected to the neutral line of the mains through a discharge tube GDT2, and is connected to the negative pole of the photovoltaic grid-connected inverter through the discharge tube GDT2.
本实用新型采用上述结构，采用双重防雷电路设计，采用双重防雷电路设计，当遇到雷电，对于发电板端采用具有两级吸收浪涌作用的接地防雷电路，对于市电部分，采用等电位防雷电路，充分保证了光伏发电设备的安全使用。The utility model adopts the above structure, adopts double lightning protection circuit design, adopts double lightning protection circuit design. The equipotential lightning protection circuit fully guarantees the safe use of photovoltaic power generation equipment.
附图说明：Description of drawings:
图1为本实用新型的结构示意图。Fig. 1 is the structural representation of the utility model.
具体实施方式：detailed description:
为能清楚说明本方案的技术特点，下面通过具体实施方式，并结合其附图，对本实用新型进行详细阐述。In order to clearly illustrate the technical features of this solution, the utility model will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.
如图1中所示，一种光伏防雷电路，包括设置在光伏发电板和光伏并网逆变器之间的接地防雷电路和设置在市电和光伏并网逆变器之间的等电位防雷电路；As shown in Figure 1, a photovoltaic lightning protection circuit includes a grounding lightning protection circuit arranged between the photovoltaic power generation Potential lightning protection circuit;
所述接地防雷电路包括连接在光伏发电板正负极之间的压敏电阻MOV1，在压敏电阻MOV1的两端并联有依次串联的压敏电阻MOV2和MOV3，在MOV2和MOV3的连接端连接有一接地设置的放电管GDT1；在光伏发电板的正负两极之间还并联有瞬态抑制二极管TVS1，在瞬态抑制二极管TVS1和光伏发电板的正极之间设有电感L1，在瞬态抑制二极管TVS2和光伏发电板的负极之间设有电感L2,在瞬态抑制二极管TVS1的两端并联有相互串联的瞬态二极管TVS2和瞬态二极管TVS3，相互串联的瞬态二极管TVS2和瞬态二极管TVS3并联在光伏并网逆变器上，瞬态二极管TVS2和瞬态二极管TVS3的连接端接地设置；The grounding lightning protection circuit includes a piezoresistor MOV1 connected between the positive and negative poles of the photovoltaic power generation panel, and the two ends of the piezoresistor MOV1 are connected in parallel with piezoresistors MOV2 and MOV3 in series, and the connection ends of MOV2 and MOV3 There is a discharge tube GDT1 connected to the ground; a transient suppression diode TVS1 is connected in parallel between the positive and negative poles of the photovoltaic power generation panel, and an inductor L1 is provided between the transient suppression diode TVS1 and the positive pole of the photovoltaic power generation panel. An inductance L2 is set between the suppression diode TVS2 and the negative pole of the photovoltaic power generation panel, and the transient diode TVS2 and the transient diode TVS3 are connected in parallel at both ends of the transient suppression diode TVS1, and the transient diode TVS2 and the transient diode TVS2 are connected in series. The diode TVS3 is connected in parallel to the photovoltaic grid-connected inverter, and the connection terminals of the transient diode TVS2 and the transient diode TVS3 are grounded;
所述等电位防雷电路包括设置在相互并联的压敏电阻MOV4,MOV5,MOV6和MOV7，其中一并联端通过开关K4与市电的火线相连，又与光伏并网逆变器的正极相连，另一并联端通过一放电管GDT2与市电的零线相连，又通过放电管GDT2与光伏并网逆变器的负极相连。The equipotential lightning protection circuit includes piezoresistors MOV4, MOV5, MOV6 and MOV7 arranged in parallel with each other, one of the parallel terminals is connected to the live wire of the mains through the switch K4, and is connected to the positive pole of the photovoltaic grid-connected inverter. The other parallel terminal is connected to the neutral line of the mains through a discharge tube GDT2, and is connected to the negative pole of the photovoltaic grid-connected inverter through the discharge tube GDT2.
使用时，一旦有雷电击中光伏发电板的情况发生，压敏电阻MOV1,MOV2和MOV3用来吸收较大的浪涌，然后通过瞬态抑制二极管TVS1,TVS2和TVS3对残压进行进一步的吸收，以保证光伏并网逆变器的安全。When in use, once a lightning strikes the photovoltaic power generation panel, the varistors MOV1, MOV2 and MOV3 are used to absorb a large surge, and then the residual voltage is further absorbed by the transient suppression diode TVS1, TVS2 and TVS3 , to ensure the safety of the photovoltaic grid-connected inverter.
市电一旦有雷电击中的情况发生，因不存在地向电位差，可以使用雷电冲击信号吸收电路对其进行吸收，并使之等电位连接，达到防雷的目的。Once there is a lightning strike on the mains, because there is no ground potential difference, it can be absorbed by the lightning impulse signal absorption circuit and connected to the equipotential to achieve the purpose of lightning protection.
上述具体实施方式不能作为对本实用新型保护范围的限制，对于本技术领域的技术人员来说，对本实用新型实施方式所做出的任何替代改进或变换均落在本实用新型的保护范围内。The above-mentioned specific implementation manners cannot be regarded as limitations on the protection scope of the present utility model. For those skilled in the art, any alternative improvements or transformations made to the embodiments of the present utility model fall within the protection scope of the present utility model.
本实用新型未详述之处，均为本技术领域技术人员的公知技术。The parts of the utility model that are not described in detail are the known techniques of those skilled in the art.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621256701.2U CN206226006U (en) | 2016-11-18 | 2016-11-18 | A kind of photovoltaic lightningproof circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621256701.2U CN206226006U (en) | 2016-11-18 | 2016-11-18 | A kind of photovoltaic lightningproof circuit |
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| CN206226006U true CN206226006U (en) | 2017-06-06 |
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| CN201621256701.2U Expired - Fee Related CN206226006U (en) | 2016-11-18 | 2016-11-18 | A kind of photovoltaic lightningproof circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097987A (en) * | 2021-04-09 | 2021-07-09 | 华为技术有限公司 | Lightning protection device and photovoltaic power generation system |
| WO2026082416A1 (en) * | 2024-10-18 | 2026-04-23 | Tdk Electronics Ag | Overvoltage protection circuit |
-
2016
- 2016-11-18 CN CN201621256701.2U patent/CN206226006U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097987A (en) * | 2021-04-09 | 2021-07-09 | 华为技术有限公司 | Lightning protection device and photovoltaic power generation system |
| EP4071954A1 (en) * | 2021-04-09 | 2022-10-12 | Huawei Digital Power Technologies Co., Ltd. | Lightning protection apparatus and photovoltaic power generation system |
| US11855449B2 (en) | 2021-04-09 | 2023-12-26 | Huawei Digital Power Technologies Co., Ltd. | Lightning protection apparatus and photovoltaic power generation system |
| WO2026082416A1 (en) * | 2024-10-18 | 2026-04-23 | Tdk Electronics Ag | Overvoltage protection circuit |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20171118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |