摘要
考虑输电线路出现多条分支的情况,文中提出一种适于多分支输电线路的故障支路判别算法,该算法仅采用线路两端的电流、电压测量值,利用故障附加分量建立一种故障计算指标;通过该计算指标与线路分支节点的比较,能有效判定故障所在区域范围,进而构建了一种故障支路判别算法。该算法能实现任意分支线路的故障支路判定,解决了传统双端测距原理的通用性问题。大量的PSCAD仿真结果验证了该算法的有效性,同时该算法不受故障类型、过渡电阻等因素影响。
Considering the situation that the transmission line may be tapped with legs, a fault section discrimi- nation algorithm for the transmission line with multi-tapped legs is presented in this paper. By using the meas- ured voltage and current at two terminals, a fault section discrimination index is established by obtaining the additional fault component. Through the comparison of the calculated index and line branch node, the suspec- ted fault area can be effectively located. Then a fault section discrimination algorithm is proposed, which can discriminate the fault section with any legs and solve the generality of the two-terminal fault location method. Extensive PSCAD simulations have been performed. The results verify the validity of the algorithm and the proposed algorithm is independent of fault type, fault resistance, etc.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2012年第3期127-133,共7页
Proceedings of the CSU-EPSA
关键词
传输线路
叠加原理
故障测距
相量测量单元
transmission line
principle of superposition
fault location
phase measurement unit（PMU）
