Title: Current-based hybrid protection scheme using signal processing techniques for utility network with high renewable energy generation

Authors: Anup Kumar; Himanshu Sharma; Ram Niwash Mahia

Addresses: Department of Electrical and Electronics Engineering, IIMT University, Meerut, Uttar Pradesh, 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, Himachal Pradesh, India

Abstract: Current-based hybrid renewable energy (RE) protection scheme (HREPS) using Stockwell transform (ST), alienation coefficient (ACF) and Wigner distribution function (WDF) is designed for utility network with RE generation. HREPS is effective to detect faults like line to ground, line to line, line to line and ground, all lines and all lines and ground. This is identified by comparing peak magnitude of formulated hybrid RE fault index with RE threshold (RETH). Performance of HREPS is checked to detect faults during operating scenario like changing fault impedance, variations in fault incidence angle, and faults at different nodes of grid. HREPS effectively detects faultswith20dB SNR noise level, discriminates faults from operational events, and detects faults on a 33 kV practical grid. Faults are classified using numbers of faulty phases. Ground availability is recognised using hybrid RE ground fault index. Performance of HREPS is superior compared to protection scheme using discrete wavelet transform.

Keywords: alienation coefficient; ACF; hybrid renewable energy protection scheme; HREPS; fault event; renewable energy Stockwell transform; utility network; Wigner distribution function; WDF.

DOI: 10.1504/IJPT.2024.140128

International Journal of Powertrains, 2024 Vol.13 No.2, pp.201 - 224

Received: 21 Nov 2022
Accepted: 19 Feb 2024
Published online: 24 Jul 2024 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article