利用六序分量复合序网法分析同杆双回线故障的新方法

A NEW FAULT ANALYSIS METHOD OF THE DOUBLE CIRCUIT LINE ON THE SAME POLE(DISP) BY USE OF THE INTERCONNECTION OF SIX SFQUENCE NETWOKKS(ISSN)

本文结合同杆双回线的特点,引入六序故障分量,推导出同杆双回线120种故障的六序故障分量解析计算式,由此提出了六序复合序网分析同杆双回线故障的新方法,此方法在计算同杆双回线故障时非常简单,并且六序故障分量之间的相位关系和幅值关系可在复合序网中很直观地表现出来.通过EMTP仿真计算证明了本文所提方法的正确性.

This papwr, based on the characteristics of the DLSP, introduces the six sequence components into fault analysis. Formulas of six sequence fault components for 25 fault types which would occur on the DLSP are derived. By summerizing the formulas a new fault analysis method based on the ISSN of the DLSP is presented. The method is simple in fault analysis and relations of both phase angle and amplitude among six sequence components can be seen directly in the ISSN. Result of digital simulation by use of EMTP and the ISSN are presented.