Fault location method based on the periodicity of the transient voltage traveling wave

In this paper, a new method of fault location based on one-terminal transient voltage traveling waves is put forward. The transient process caused by breaker tripping contains the information about the fault distance. By measuring the period of voltage traveling waves induced by breaker tripping, fault distance can be obtained. Before giving the fault location principle, the model of breaker tripping is analyzed. In the paper, the elements to affect the location accuracy have been discussed. Finally, the method was verified by EMTDC simulations.