串补输电线路故障定位方法研究  

Accurate Fault Location Algorithm for Series Compensation Lines

作　　者：周笛[1] 谭建成[1] 韩立楠[1] 

机构地区：[1]广西大学电气工程学院,广西南宁530004

出　　处：《现代电力》2009年第2期27-31,共5页Modern Electric Power

摘　　要：串联补偿电容的使用使得线路的阻抗不再均匀,在具有串联补偿电容的输电线路中,由于氧化锌非线性电阻(MOV)的非线性特性,导致常规的故障测距方法不再适用。提出了一种适用于串补输电线路故障定位的改进算法,该算法采用分布参数模型,不考虑故障时串补及其保护装置的状态,利用故障后到MOV导通前线路两端的数据,并用全球定位系统(GPS)对线路两端采样数据进行同步。仿真研究表明,该算法具有较高的精度和较强的适应性。The usage of series compensation capacitors leads to the uniformity of circuital impedance. Conventional methods of fault location are not suitable for power system with series compensation transmission lines, because of the nonlinear characteristics of MOV protection. An refinement fault location algorithm for series compensation transmission lines is proposed by using the distributed parameter line model and the two terminal synchronous data before the MOVs conduction. The nonlinearity of MOV is not taken into account. The global positioning system is used to sample the data on both ends of the line. Simulation results show that high accuracy of fault location can be obtained by using the algorithm.

关 键 词：电力系统 故障测距 串补线路 氧化锌非线性电阻(MOV) 分布参数线路模型 

分 类 号：TM721.4[电气工程—电力系统及自动化]