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Novel network based traveling wave location algorithm with information fusion

ZENG Xiang-jun,DENG Feng,LI Ze-wen,LI Ling,CHU Xiang-hui(School of Electrical & Information Engineering,Changsha University of Science and Technology,Changsha 410004,China)  
A novel network based traveling wave fault location algorithm is presented in this paper.With analyzing the relationship of the initial traveling wave arrival times recorded by fault location devices in the whole grid,the complex transmission network can be simplified into a radial network by using the shortest path principle,through which the initial traveling wave arrival times recorded at remote substations are converted into the times at the two terminals of the fault line.By deleting the invalid converted-times and fusing all the valid converted-times,the whole power grid based fault location is realized.The novel algorithm can effectively solve the problem of location failure,which is caused by any fault location device fault,startup failure or time recording error.Simulation results show that the algorithm is with high precision and robustness,and the fault distance error is no more than 100 m.
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