浙江电力

2013, v.32;No.203(03) 5-8

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大型抽水蓄能电站接地降阻措施的探讨
Probe into Grounding Resistance Reduction Measures of Large Pumped Storage Power Station

郑晖,李昭,蔡望奇,李既明,邓杰文,满超楠
ZHENG Hui1,LI Zhao2,CAI Wang-qi3,LI Ji-ming1,DENG Jie-wen1,MAN Chao-nan1(1.College of Electrical & Information Engineering

摘要(Abstract):

对某大型抽水蓄能电站接地电阻超标的原因进行了分析,通过现场调研,将上水库可利用的区域分成6部分,针对这6个区域和下水库不同的地形、地质条件,参照规程并结合常用的降阻措施进行分析,找到合适的方法进行降阻改造。计算分析及现场测试表明,经过接地改造后的接地电阻值降低到规程要求值以下,同时满足最大跨步电压和热稳定性要求。
The reasons of the exceeded grounding resistance in a large pumped storage power are analyzed,and the available area in the upper reservoir,through the field survey,is divided into 6 parts.The paper analyzes the six parts,different topographic and geologic conditions of the 6 regions of the lower reservoir,and it refers to regulations and commonly used resistance reduction measures for analysis to find a suitable method for reducing resistance retrofit.Analysis of results and field-tests showed that after grounding reconstruction the grounding resistance value is reduced to required value,meanwhile the maximum step voltage and thermal stability requirements are met.

关键词(KeyWords): 抽水蓄能电站;接地电阻;跨步电压;降阻措施
pumped storage power station;grounding resistance;step voltage;resistance reduction measures

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 郑晖,李昭,蔡望奇,李既明,邓杰文,满超楠
ZHENG Hui1,LI Zhao2,CAI Wang-qi3,LI Ji-ming1,DENG Jie-wen1,MAN Chao-nan1(1.College of Electrical & Information Engineering

DOI: 10.19585/j.zjdl.2013.03.002

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