Online localization and phase selection of multiple partial discharge sources in cross‐bonded cable networks

Abstract

This paper presents a novel rule-based method for online localization and phase selection of multiple partial discharge (PD) sources in cross-bonded cable (CBC) networks by simultaneous measurements of PD pulse trains at all link boxes. The proposed method detects PD defective cable sections (localization task) and their corresponding defective phases (phase selection task) regardless of the number of PD sources inside the CBC network and their severity differences. For the first time, the proposed method is capable of detecting more than one PD source by analysing PD pulse trains. Numerous simulations of different case studies performed in EMTP RV software indicate highly accurate performance of the proposed method even at high noise levels.