Traveling Wave Time Difference Based Multiterminal Transmission Network Fault Location

Aiming at the problem that the fault location accuracy of multi-terminal transmission line is not high, a fault location method based on multi-terminal traveling wave time difference is proposed. By analyzing the difference among multi-terminal traveling wave time difference in different fault locations, the multi-terminal traveling wave time difference matrix is established, which shows that the multi-terminal traveling wave time difference reflects the characteristics of different fault locations. F norm is used to analyze quantitatively the difference among the different fault location. By comparing the matrix F norm of each simulated fault point with the actual fault, the fault location is determined. Thus, the accurate fault location is calculated by the double-ended fault location PSCAD simulation result show that the proposed method is simple to implement and determine accurately the fault location. It has some certain practical vaule.