Lightning Transient Characteristics of a 500-kV Substation Grounding Grid

摘要：

Lightning transient characteristics of the grounding grid is the fundamental performance for lightning protection of the substation.The stability and safety of the 500-kV substation is of great importance to the safe operation of the power system.The characteristic of grounding grid is quite different from that at the power-frequency condition when subject to lightning impulse current.Using CDEGS software, a 500-kV substation grounding grid and its framework model are developed for the transient analysis of ground potential rise (GPR), touch voltage and the step voltage when lightning rods are struck by lightning impulse current.According to IEEE standard 80-2000, this paper puts forward some improvement opinions about the grounding grid of the 500-kV substation.

关键词： grounding grid transient characteristics substation ground potential rise (GPR) touch voltage step voltage

作者: Chenghuan Tian Yi Zhang Li Cai Jianguo Wang Songbo Huang Yan Wang

作者单位: School of Electrical EngineeringWuhan UniversityWuhan 430072，China Foshan Power Supply BureauGuangdong Power Grid CorporationFoshan 528000,China Foshan Power Supply Bureau Guangdong Power Grid Corporation Foshan 528000,China

会议类型: 国际会议

会议名称: 第七届亚太防雷国际会议

会议地点: 成都

会议语种:英文

页码: 1-5

在线出版日期: 2011-11-01（万方平台首次上网日期，不代表论文的发表时间）