霍晓娣,牛胜锁,梁志瑞.三回耦合输电线零序参数在线测量的研究[J].电测与仪表,2015,52(11):. HUO Xiaodi,NIU Shengsuo,LIANG Zhirui.Study on live line measurement of zero-sequence parameters of triple-circuit coupled transmission lines[J].Electrical Measurement & Instrumentation,2015,52(11):.
三回耦合输电线零序参数在线测量的研究
Study on live line measurement of zero-sequence parameters of triple-circuit coupled transmission lines
For live line measuring zero-sequence parameters of triple-circuit coupled transmission lines of different voltage levels, the structure of transmission line is analyzed, A new live line measurement algorithm of zero-sequence parameters is developed combining the incremental method with "double-Π-shaped" circuit model and the least square method to work out the parameters. A simulation experiment of triple-circuit coupled transmission line of three different voltage levels is carried on in this paper. The simulation result with a maximum error of 5% proves the verification of the zero-sequence parameter measurement algorithm and can be applied to the zero-sequence parameters measurement of power system for triple-circuit coupled transmission lines.