Branch Distance Coefficient-based Fault Location of Four-terminal Transmission Line
Aiming at addressing the difficulty of fault location of four-terminal transmission lines,a fault location method based on branch distance coefficient is proposed.By assuming the location of fault points,the two-end ranging equations of the corresponding lines are constructed successively and the distance coefficients of the branches are calculated.Then the fault branch is located and the fault distance is calculated by using distance coefficients of each branch.The fault location method is independent of fault type,fault position,transition impedance,system operation mode,etc.Simulation results based on PSCAD platform has verified the correctness and the effectiveness of the proposed method.
four-terminal linefault locationdistance measurement coefficientfault line determination
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