Conductor Arrangement Effects on Negative Discharge Characteristics of Rod-conductor Gaps With Switching Impulses

被引：0

作者：

An Y. ^{[1
]}

Wen X. ^{[2
]}

Hu Y. ^{[1
]}

Dai M. ^{[3
]}

Li Z. ^{[3
]}

Liu J. ^{[4
]}

Lan L. ^{[2
]}

Wang Y. ^{[2
]}

机构：

[1] School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo, 255000, Shandong Province

[2] School of Electrical Engineering, Wuhan University, Wuhan, 430072, Hubei Province

[3] China Electric Power Research Institute, Wuhan, 430074, Hubei Province

[4] Zibo Power Supply Company, Zibo, 255000, Shandong Province

来源：

Hu, Yuanchao (huyuanchao3211@126.com) | 2017年 / Chinese Society for Electrical Engineering卷 / 37期

关键词：

Breakdown time; Breakdown voltage; Conductor arrangement; Discharge path; Negative switching impulse; Rod-conductor gap; Rod-simulated transmission line gaps;

D O I：

10.13334/j.0258-8013.pcsee.161161

中图分类号：

学科分类号：

摘要：

The negative breakdown characteristics of rod-conductor air gaps can be influenced by electrode arrangement. Therefore, experiments have been conducted in detail to study the effect of different conductor arrangements. Negative switching impulses of 80/2500μs and 20/2500μs were applied for over 1000 times in experiments. Comparisons were done for different conductor radii and heights and their grounding ways. Test results show that 50% negative breakdown voltages of rod-conductor gaps decreased with increasing conductor radius. The 50% breakdown voltages of rod-ungrounded conductor gaps were higher than that of rod-grounded conductor gaps. The induced voltage on ungrounded conductors increased firstly with increasing gap distance, and then decreased. The conductor grounding way had little effect on the streamer discharge process, but showed significant influence on the probability of discharge paths in rod-transmission line model gaps. The grounding way of simulated transmission lines had little effects on 50% breakdown voltages and breakdown time of the complicated gaps. The research conducted in this paper can provided reference for insulation and lightning protection designation in power system. © 2017 Chin. Soc. for Elec. Eng.

引用

页码：4557 / 4565

页数：8

共 22 条

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