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
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
参考文献(References):
- DL/T 5091-1999水利发电厂接地设计技术导则[S].北京:中国电力出版社,1999.
- DL/T 475-2006接地装置特性参数测量导则[S].北京:中国电力出版社,2006.
- 李景禄.接地装置的运行与改造[M].北京:中国水利水电出版社,2005.
- 何金良.利用周边地理环境降低区域变电所接地电阻[J].中国电力,2001,34(11):50-53.
- 李景禄,郑瑞臣.关于接地工程中若干问题的分析和讨论[J].高电压技术,2006(6):122-124.
- 彭利强.宁波110 kV裘村变电所接地改造分析[J].电瓷避雷器,2010(3):27-30.
- 敬亮兵.某厂区变电站接地设计与实施[J].电力建设,2009(1):47-49.
- 雷丰瑞.冲江河110 kV水电站接地改造分析[J].电瓷避雷器,2012(1):99-102.
- 曹斌.水电站接地装置存在的问题分析与改造措施探讨[J].高压电器,2010(9):99-102.
- 许非吾.500 kV兰亭变电所接地网降阻改造[J].高电压技术,2008(4):839-841.
- 庄池杰.高土壤电阻率地区变电站接地网设计思路[J].高电压技术,2008(5):893-897.
- 高新智.针对某水电站接地网改造方案的探讨[J].电瓷避雷器,2010(4):30-33,37.
- 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
- 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
- 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