中国电机工程学报2017，Vol.37Issue(15)：4557-4565,9.DOI:10.13334/j.0258-8013.pcsee.161161
导线布置方式对棒-线长空气间隙负极性操作冲击放电特性的影响
Conductor Arrangement Effects on Negative Discharge Characteristics of Rod-conductor Gaps With Switching Impulses
摘要
Abstract
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 80/2500as and 20/2500μts 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.关键词
棒-线间隙/棒-输电线路组合间隙/导线布置方式/负极性操作冲击电压/放电电压/放电时间/放电路径Key words
rod-conductor gap/rod-simulated transmission line gaps/conductor arrangement/negative switching impulse/breakdown voltage/breakdown time/discharge path分类
信息技术与安全科学引用本文复制引用
安韵竹,文习山,胡元潮,戴敏,李志军,刘建军,蓝磊,王羽..导线布置方式对棒-线长空气间隙负极性操作冲击放电特性的影响[J].中国电机工程学报,2017,37(15):4557-4565,9.基金项目
山东省自然科学基金项目(ZR2016EL17,ZR2016EEQ20).Project Supported by National Natural Science Foundation of Shandong Province(ZR2016EL17,ZR2016EEQ20). （ZR2016EL17,ZR2016EEQ20）
