Grounding Fault Protection in Distribution System Based on Method of the Module Mazimum Value
Fault line detection in distribution system is a problem. In this paper, method of the module maximum value is employed to analyze the electric information after the fault, and to respond the abrupt change of zero sequence currents, and through comparing the change of the zero sequence currents on all lines polarities and magnitudes, then the fault line can be determined. With the using of inner product, the criterion has good property of containing error, and so that it can get more high precision of fault line detection. This method is suited for various distribution systems with different neutral grounding modes. Moreover, it can be easily used in site without adjusting protective setting. EMTP simulations show that the method is effective and reliable.
Distribution system Fault line detection Wavelets transform Singular detection
XIAO Bai YAN Hao LI Guang-yu BAI Yang
North China Electric Power University,Baoding 071003,China Northeast Dianli University,Jilin 132012, Power Supply Corporation of Jlin city,Jlin 132001,China
国际会议
2008 China International Conference on Electricity Distribution (CICED 2008)(2008中国国际供电会议)
广州
英文
1-5
2008-12-10（万方平台首次上网日期，不代表论文的发表时间）