Traveling‐wave‐based protection of parallel transmission lines using Teager energy operator and fuzzy systems

Abstract

This study proposes an intelligent traveling-wave (TW)-based protection algorithm for parallel transmission lines. In the proposed algorithm, Karenbauer's phase to modal transform is applied on three phase current signals. Teager energy operator is then applied on the modal components to extract TWs. First extracted TW of each modal component along with well-designed fuzzy systems are used for internal fault identification and fault type classification. In order to find the fault location, the time difference between the first and the second TWs and the TW propagation speed are utilised. Test signals are generated in PSCAD/EMTDC software and the algorithm is implemented in MATLAB. Results show that the proposed algorithm is an ultra-high-speed algorithm for the reliable protection of parallel transmission lines.

Detecting instant of multiple faults on the transmission line and its types using time–frequency analysis

“…Artificial Neural Networks (ANN), which have been widely studied for fault detection and classification, require a training process and need one cycle of information to classify events [8]. Fault identification was also addressed using fuzzy techniques [9][10]. Such methods do not require a training process, however their generalization is more complex.…”

Fault detection and classification in transmission lines based on a PSD index

“…In [8], a method for detecting and classifying faults based on computational intelligence is presented, where fault identification is accomplished by stochastic components of the voltage and current signals. Fault identification is also tackled using fuzzy techniques [9][10][11] reaching 99% in some cases of accuracy. Such methods do not require a training process, but their generalisation is more complex.…”

Travelling waves‐based identification of sub‐health condition of feeders in power distribution system

“…Nevertheless, the research focuses on using low-frequency electrical information compared with travelling waves information, like power-frequency voltages and currents. However, actually traveling wave information has already been utilised for many purposes in power system, like travelling wave fault location and travelling wave protection [9][10][11]. These applications have performed well in transmission system.…”