A Network-adapted Traveling-wave Fault Location Method
LI Li-bin · Dianli xitong zidonghua · 2009
The existing of loop in the transmission network may effect the matching of initial traveling wave arrival time and its transmission path,which causes an error for fault location.That is why a traveling wave fault location method for self-adapt network structure is proposed.Floyd algorithm is applied to search the shortest path from the fault point to all the nodes in the network when the fault line is without a loop.As for the fault line with some loops,the node,which records the maximal traveling wave arrival time,is suggested that directly connects with non-shortest path,and the relative time criterion for eliminating the non-shortest path in the loop is proposed.By loop simplification,the complicated network can be simplified into radial network.The fault position can be calculated accurately in the radial network with network-based traveling wave fault location algorithm.Simulation results show that the network simplification method is easy to implement,and suitable for any network structure.