Very Fast Transient Overvoltages and Protections in 500kV GIS

摘要：

Very Fast Transient Overvoltage (VFTO) generated by the opening or closing of disconnections (DS) in GIS can range from several kHz to hundreds of MHz.In this paper,the technique of GIS is reviewed,the mechanism of VFTO is introduced; Estimation of Very Fast Transient Overvoltage has been carried out using EMTP for various switching conditions in a 500kV gas insulated substation.This over-voltage amplitude is generally under 2.0 p.u,but its rate of equivalent level is high,the tip is very steep.Influencing factors of VFTO are discussed.Necessary measures should be taken to protect the device in GIS.To avoid the harm of VFTO in GIS,operators should minimize the operation of DS as much as possible.

关键词： Electromagnetic transient analysis:GIS :VFTO

作者: Peng-fei Hu He-mei-zi Tang Qing-quan Li Wei Wang

作者单位: High Voltage Institute School of Electrical Engineering,Shandong University Jinan,China Shandong EHV Power Transmission Company Shandong Electric Corporation Jinan,China

会议类型: 国际会议

会议名称: 2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies(第四届电力设施管制、重建及能源技术国际会议 DRPT 2011)

会议地点: 威海

会议语种:英文

页码: 1865-1868

在线出版日期: 2011-07-06（万方平台首次上网日期，不代表论文的发表时间）