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Accurate fault detection during power swing: compensated line study

Hamed Fasihi Pour Parizi (Faculty of Engineering, Shahed University, Tehran, Islamic Republic of Iran)
Saeed Seyedtabaii (Faculty of Engineering, Shahed University, Tehran, Islamic Republic of Iran)
Mahdi Akhbari (Faculty of Engineering, Shahed University, Tehran, Islamic Republic of Iran)

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering

ISSN: 0332-1649

Article publication date: 14 August 2021

Issue publication date: 8 October 2021

50

Abstract

Purpose

The purpose of this study is to develop an algorithm to accurately detect faults in series capacitor compensated (SCC) power transmission lines. The line fault must be distinguished from stable power swing, compensating unit malfunction and defects on other lines sharing the same bus (external faults).

Design/methodology/approach

In this regard, an effective fault feature extractor based on the cumulative sum (CUSUM) of the amplified second harmonic of the phase currents is suggested. The features are then applied to an artificial neural network for classification. No-fault cases include stable power swing and several disturbances. Due to the independent analysis of each phase, faulty phase detection is also a by-product.

Findings

Various fault scenarios are defined, and the algorithm success rate is compared with some newly published methods. Extensive simulations performed over a single-machine infinite bus, a 3-machine, 9-bus and the large-scale New England IEEE 39-Bus networks all indicate that the proposed algorithm can trip the faulty line more quickly and accurately than the contestant algorithms.

Originality/value

Suggestion of a new algorithm based on the CUSUM of the amplified second harmonic of the phase current for the fault feature extraction that is able to isolate the transmission line internal faults from stable poser swing, line compensating unit malfunction and faults on the adjacent lines connected to the same bus.

Keywords

Acknowledgements

This work has been partially supported by the Research Department of Shahed University, Tehran, Iran.

Citation

Fasihi Pour Parizi, H., Seyedtabaii, S. and Akhbari, M. (2021), "Accurate fault detection during power swing: compensated line study", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 40 No. 4, pp. 856-869. https://doi.org/10.1108/COMPEL-09-2020-0300

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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