刘建华,周健强,李天玉.基于电流突变量的采样值差动保护研究[J].电测与仪表,2015,52(24):. liujianhua,zhoujianqiang,litianyu.Study on Differential Protection Based on Sampled Values of The Variables of Current Process[J].Electrical Measurement & Instrumentation,2015,52(24):.
基于电流突变量的采样值差动保护研究
Study on Differential Protection Based on Sampled Values of The Variables of Current Process
current longitudinal protection as a line, transformer, bus and other equipment differential protection, protection of vital movement is fast and accurate, compared with the traditional vector differential protection, differential protection speed has been greatly improved sampling value. This paper introduced process variable current algorithm, combining the advantages of sampling value differential protection, construct the current sudden variable sampling value differential protection criterion, and analyzes the value of R/S. Finally the application of MATLAB to the end of the line, phase short circuit as an example, the simulation of fault zone of the three kinds of differential protection, and the simulation results are analyzed.
