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首页 > 过刊浏览>2022年第37卷第1期 >202-210. DOI:10.19781/j.issn.1673-9140.2022.01.024
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35kV输电线路灭弧间隙的仿真分析与试验
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TM863

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广西创新驱动和发展撰写资金项目(AA18242050)


Simulation analysis and experimental research on arc-extinguishing gap of 35 kV transmission line
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    摘要:

    为解决35 kV输电线路普遍存在的雷害问题,提出一种新型灭弧防雷间隙(NALPG)装置。首先,为验证装置的可行性,论述装置的熄弧原理,研究电弧发展和熄灭的机理,并借助电磁暂态计算软件(EMTP)搭建雷击35 kV输电线路模型来分析装置熄弧之后的暂态运行过程。通过仿真得知NALPG具有降低雷击过电压和削减谐波分量的能力。紧接着构建试验电路进行工频电弧截断试验,得到整个熄弧时间仅需4.0 ms,且一段时间内电弧未重燃。防雷改造NALPG的实际挂网运行效果优异。

    Abstract:

    In order to solve the general lightning problems of 35 kV transmission lines, a new arc-extinguishing and lightning protection gap (NALPG) is proposed in this article. So as to verify the feasibility of the device, the principle of arc extinction of the device is discussed, and the mechanism of arc development and extinction is studied. Meanwhile, the electromagnetic transient calculation software is applied to build a 35 kV transmission line model of lightning strike to analyze the transient process of the device after arc quenching. Simulation results show that NALPG has the ability to reduce lightning overvoltage and harmonic components. Then, experimental circuit is constructed to conduct power frequency arc cut off test. The test results show that the entire arc extinction time is only 4.0 ms and the arc does not reignite for a period of time. Until now, the actual lightning protection effect of NALPG shows excellent results in line operation.

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孔佳琦,夏志坚,王巨丰,等.35kV输电线路灭弧间隙的仿真分析与试验[J].电力科学与技术学报,2022,37(1):202-210.
KONG Jiaqi, XIA Zhijian, WANG Jufeng, et al. Simulation analysis and experimental research on arc-extinguishing gap of 35 kV transmission line[J]. Journal of Electric Power Science and Technology,2022,37(1):202-210.

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