电力系统及其自动化学报2012，Vol.24Issue(3)：116-120,5.
小电阻接地系统间歇性弧光过电压分析
Analysis of Intermittent Arc Overvoitages in Low Resistance Grounded Systems
童奕宾 1尤智文 1李姝2
作者信息
- 1. 上海市电力公司市区供电公司,上海200080
- 2. 上海市电力公司信息通信中心,上海200032
- 折叠
摘要
Abstract
A simulation platform about the low resistance grounded system, where the grounded arc model is used to simulate the intermittent arc earth fault, is constructed by the use of the PSCAD/EMTDC in this paper. The arc extinction theory of power frequency is applied to analyze the principle of overvoltage. Firstly, arc overvottages in the isolated neutral system are presented and verified that the overvoltages easily happen when the intermittent arc earth fault occurs by simulations. Secondly, two kinds of intermittent arc earth fault in the low resistance grounded system are analyzed. Finally, the conclusion is obtained that the low resistance grounded system can effectively suppress the overvoltage.关键词
小电阻接地/过电压/间歇性电弧/仿真Key words
low resistance grounding/ overvoltage/ intermittent arc/ simulation分类
信息技术与安全科学引用本文复制引用
童奕宾,尤智文,李姝..小电阻接地系统间歇性弧光过电压分析[J].电力系统及其自动化学报,2012,24(3):116-120,5.
