Wide Area Travelling Wave Fault Location In the Transmission Network
Traveling wave fault location method has been widely applied in the power system because it’s wide applicability and high accuracy. The field travelling wave fault location system uses the double ends method as major fault location principle,while the single end method is used as complimentary fault location means. For these two methods,they mainly concern the double ends of the faulty line and rarely consider the travelling wave data of the neighboring substations. With the rapid development of communication technology,we can use wide area travelling wave data for fault location. Based on the analysis of fault generated traveling waves’ propagation path and fault location error,this paper proposes the fault location strategy of wide area travelling wave fault location. It uses the shortest path containing the faulty line to get the precise location result and uses the other path location results to validate. The paper constructs the wide area traveling wave fault location algorithm,which uses the weighted graph to represent the power grid,and it uses Floyd-Warshall algorithm to get the shortest path containing the faulty line between the substations. Then uses the extended double ends method to compute the distance to fault,and determine the final result by using the wide area fault location strategy. The transmission network of Hubei province case shows that the proposed algorithm is effective. The algorithm uses wide area traveling wave data to improve the credibility of the location result,and it can improve the reliability of the traveling wave location system by finding the abnormal substation data.
Fault Location Transmission Network Traveling Wave Wide Area
CHEN Yu LIU Dong XU Bingyin HUANG Yuhui
Shanghai Jiaotong University,Shanghai 200240,China Shandong University of Technology,Zibo 255049,China
国际会议
南京
英文
1517-1522
2010-09-13（万方平台首次上网日期，不代表论文的发表时间）