Integrated discrete wavelet transform-based faulted phase identification for multi-terminals power systems

Abstract

This paper proposes a novel fault identification algorithm for an electrical multi-terminals network. The Discrete Wavelet Transform (DWT) is used to decompose current signals. The purposed algorithm designs to be algorithm able to detect and classify various fault types at any point on the multi-terminals system. Using the current signals only that are captured from single ended of multi-terminals configuration, which consists of three terminal circuits. The ATP/EMTP simulator is developed to evaluate the capability of the proposed algorithm. In addition, the proposed algorithm is applied to simulated parameters that are taken from Egyptian electrical grid, which comprises of three terminal circuits connected as ring configuration. Also, it considered the future installation of El Dabaa nuclear power station. The proposed algorithm achieves accurate results under numerous conditions such as different fault resistances, locations and inception angles.