中国电机工程学报2011，Vol.31Issue(28)：120-127,8.
棒极结构对棒-板间隙操作冲击放电特性影响的试验研究
Influence of Rod electrode Structure on Switching Impulse Discharge Characteristics of Rod-plane Air Gap
摘要
Abstract
Rod-plane air gap is the most typical gap in the research of air gap discharge, and its switching impulse characteristic is a very important factor for dimension of air gaps in the project design of transmission lines and converter stations/substations in transmission project. To study switching impulse characteristic of rod-plane air gap deeply, positive switching impulse discharge tests were carried out using rod electrodes with different diameters, hemisphere and cone shape in their heads. The influence of shape and diameter of rod electrode on 50% flashover voltage was concluded. To obtain the critical radius at different altitudes, comparison tests were carried out in Beijing, Xining and Yangbajing, and the critical radius corresponding to different gap distances were obtained through changing the radius of sphere connecting rod electrode. It is shown that when radius of rod electrode is less than critical radius, the change of radius and shape of rod electrode will not affect 50% flashover voltage of air gap; The critical radius will increase when gap distance increases, and the critical radius corresponding to a certain gap distance will increase at high altitude.关键词
棒-板间隙/操作冲击/50％放电电压/临界半径/高海拔Key words
rod-plane air gap/switching impulse/50% flashover voltage/critical radius/high altitude分类
信息技术与安全科学引用本文复制引用
谷琛,张文亮,范建斌,宿志一,王晰,廖蔚明,李庆峰..棒极结构对棒-板间隙操作冲击放电特性影响的试验研究[J].中国电机工程学报,2011,31(28):120-127,8.基金项目
基金项目：国家电网公司科技项目（SGKJJSKF20080452). （）
