高土壤电阻率地区变电站接地网长效降阻的实现  

Realization of long-acting resistance reduction for grounding system in substation with high soil resistivity

作　　者：麦杰恒 

机构地区：[1]广东省广电集团有限公司广州番禺供电分公司,广东广州511400

出　　处：《广东电力》2004年第2期45-48,共4页Guangdong Electric Power

摘　　要：广州番禺110kV祈福变电站所处地域的土壤电阻率较高,地网电阻值高达1 3Ω。为使地网电阻达到国家标准,首次在国内采用了世界先进的接地系统辅助设计工具———CDEGS软件包对祈福变电站接地系统进行了可行性设计论证,并予以实施。最终使地网电阻降到了0 2Ω以下,确保了设备的安全运行。在此基础上,更纵深考虑了如何使在高土壤电阻率地区的变电站设计和改造工作更加科学合理,为今后在探讨相关工作时提供一套较完整的可行性系统解决方案。Due to the high soil resistivity in 110 kV Qifu Substation area of Guangzhou, the grounding system resistance is as high as 1.3 Ω. In order to meet the national resistance standard, an internationally advanced aided design tool for grounding systems, CDEGS software package, was employed for the first time in China to demonstrate the feasibility of Qifu Substation grounding system. An appropriate solution is implemented to reduce the resistance to below 0.2 Ω,ensuring the safe operation of the equipment. On this basis, an in-depth discussion is made on how to further rationalize the design and modification of substations in areas with high soil resistivity, thus providing a relatively complete and feasible solution for such systems.

关 键 词：高电阻率 接地网 长效降阻 设计论证 解决方案 改造 

分 类 号：TM862[电气工程—高电压与绝缘技术]