An enhanced ground fault selection and distance measurement approach for single and double circuit fixed series compensated transmission line

This work demonstrates a superior local measurement-based ground fault selection and distance computation approach for a single and double circuit series compensated transmission lines. The proposed design was constructed to defeat the weaknesses of the usual protection approaches as influencing of mutual coupling, series capacitor, long outage time, one line operation mode, necessitating of synchronization, the unbalance load switching, the CT saturation, needing to know the status of circuit breakers, and the difficult fault initial condition as weak inception time, fault resistance loop, remote locations, and nearby locations. In this research, the decision data is exported from zero-sequence impedance relaying signals and positive sequence voltage relaying signal based imaginative Cos-Sin concept. To approve the suggested approach, widespread faults were simulated in the ATP program as well as the suggested approach is made in MATLAB program. The outcomes show that the proposed method is correct and overcomes the aforementioned weaknesses and difficulties.