Title: Voltage and current actuated hybrid protection scheme for utility grid with high penetration levels of renewable energy

Authors: Anup Kumar; Himanshu Sharma; Ram Niwash Mahia

Addresses: Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Delhi-NCR Campus, Modinagar, Ghaziabad, India ' Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Delhi-NCR Campus, Modinagar, Ghaziabad, India ' Department of Electrical Engineering, National Institute of Technology Hamirpur, India

Abstract: A hybrid current and voltage protection scheme (HCVPS) using Stockwell transform, alienation coefficient and Wigner distribution function is designed to detect and classify the faults on utility network with high (50%) renewable energy. HCVPS detected faults by comparing peak magnitude of hybrid current and voltage fault index (HCVFI) with a threshold and also discriminated faults from operational events. HCVPS has minimum fault detection time and perform better with variations in fault impedance, fault incidence angle, and faults incident at locations of test network. HCVPS effectively detected all faults in time of (1/16)th cycle, with noise of 20 dB SNR and also on practical utility power network. Faults have been classified using numbers of faulty phases and hybrid current and voltage ground fault index (HCVGFI) computed by processing the zero sequence current (ZSC) and zero sequence voltage (ZSV). HCVPS performs better compared to discrete wavelet transform-based method.

Keywords: alienation coefficient; ACF; hybrid current and voltage protection scheme; HCVPS; fault condition; renewable energy; Stockwell transform; utility power network; Wigner distribution function; WDF.

DOI: 10.1504/IJPEC.2022.130965

International Journal of Power and Energy Conversion, 2022 Vol.13 No.3/4, pp.294 - 318

Received: 11 Aug 2022
Accepted: 22 Dec 2022
Published online: 14 May 2023 *

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