An extreme learning machine based fast and accurate adaptive distance relaying scheme

摘要

The ideal trip characteristics of the distance relay is greatly affected by pre-fault system conditions, ground fault resistance, shunt capacitance and mutual coupling of transmission network. This paper presents an extreme learning machine (ELM) based fast and accurate adaptive relaying scheme for stand-alone distance protection of transmission network. The proposed ELM based fast adaptive distance relaying scheme (FADRS) is extensively validated on the two terminal transmission lines with complex mutual coupling and shunt capacitance and, the performance is compared with the conventional artificial neural networks (ANNs) based adaptive distance relaying scheme (ADRS). The simulation results show significant improvement in the performance indices such as relay speed and selectivity. Further, the performance of proposed FADRS is tested for stressed condition such as power swing and found to be effective and reliable. (C) 2015 Elsevier Ltd. All rights reserved.