IMPROVED TECHNIQUE FOR THE PARALLEL TRANSMISSION LINE PROTECTION USING WAVELET TRANSFORM

초록

This paper presents an improved technique for the parallel transmission lines protection. This technique consists of two parts for the accurate and rapid fault detection and fault location estimation regardless of mutual coupling between parallel lines. The first part is fault detection and extraction of the fundamental signal using wavelet transform and the second part is fault location estimation using least square error method independent of fault resistance, and the remote infeed, etc. Extensive simulation is performed to evaluate the proposed technique. In conclusion, it can protect the parallel transmission line compared to the traditional techniques more quickly and reliably.