一种配电网弧光接地故障模拟方法

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摘 要：配电网规模逐年扩大，单相接地故障造成的影响越来越大。文章从低压角度出发，利用工频熄弧理论和电力电子延迟导通技术提出了低压模拟高压弧光电流的方法;利用PSIM电力仿真软件搭建所述方法的仿真模型，并在低压系统内建立100 V试验电路。试验结果与仿真结果的趋势一致，证明了所述方法的可实施性。

关键词：配电网;弧光电流;PSIM;工频熄弧理论

中图分类号：U213.1+4     文献标志码：A     文章编号：1003-5168（2022）7-0029-04

DOI：10.19968/j.cnki.hnkj.1003-5168.2022.07.006

Abstract： The scale of the distribution system is expanding year by year， and the impact of single-phase grounding fault is increasing. From the perspective of low voltage， this paper proposes a method for low-voltage simulation of high-voltage arc current by using the theory of power frequency arc extinguishing and power electronic delay conduction technology. A simulation model of the method was built using PSIM power simulation software， and a 100 V test circuit was established in a low-voltage system. The trend of the experimental results are consistent with the simulation results， which proves the feasibility of the method.

Keywords： distribution system; arc current; PSIM; frequency arc extinguishing theory

0 引言

我国配电网规模巨大，且随着经济规模的逐年增大，配电网供电能力和供电规模也逐年增大。（剩余1975字）