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.
出处
《广东电力》
2004年第2期45-48,共4页
Guangdong Electric Power
关键词
高电阻率
接地网
长效降阻
设计论证
解决方案
改造
high resistivity
ground network
long-acting resistance reduction
design and demonstration
solution
modification
