A novel traveling wave based fault location scheme for power distribution grids with distributed generations

Abstract

A traveling wave fault location method based on multi measuring points for distribution network with distributed generation is proposed in this paper. A novel fault location algorithm based on the time difference between the first aerial-mode and zero-mode wave-fronts of the traveling wave are used to obtain the preliminary fault location without the wide area precision time synchronization. This method acquires the information gathered by measuring points at the distribution network busbar and the terminals of the trunk feeder and the random error is eliminated by using network redundant data. It's verified that the method proposed in this paper can achieve accurate location of the fault section and fault distance for distribution network with distributed generation effectively by using the IEEE 34 node network simulation.