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

作　　者：郑晖[1] 李昭 蔡望奇 李既明[1] 邓杰文[1] 满超楠[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,长沙410076 [2]珠海电力设计院有限公司,广东珠海519000 [3]科智防雷工程公司,长沙410076

出　　处：《浙江电力》2013年第3期5-8,共4页Zhejiang Electric Power

摘　　要：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 ana- lyzes 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 ther- mal stability requirements are met.

关 键 词：抽水蓄能电站 接地电阻 跨步电压 降阻措施 

分 类 号：TM862[电气工程—高电压与绝缘技术]