Multi-Resolution-Analysis-based Line-to-Ground Fault Detection in a VSC-Based HVDC System

Abstract

This paper deals with the identification of single line-to-ground (LG) fault in a voltage source controller based high voltage direct current (HVDC) link, monitoring the multi-resolution-analysis (MRA)-based discrete wavelet transform (DWT) coefficients. A prototype model has been developed to assess the system at normal and at LG fault at the receiving end of the HVDC link, monitoring the AC sending end current in the system. This study also deals with the assessment of locations of LG faults in the HVDC link at different positions, from the sending end. Case studies have been carried out using field data and different DWT-based statistical parameters have been estimated and their variations due to fault have been observed. Then DWT-level-based optimization and parametric optimization have been done. An algorithm has been developed for fault assessment. Based on the specific outcome of the case studies, distance relaying scheme has been proposed, which has been validated with software simulation based on real field data.

KEYWORDS:

• Fault detection algorithm
• Field data
• Level optimization
• LG fault
• MRA-based distance relaying
• Parametric optimization
• Real-time digital simulation
• VSC-based HVDC system

Additional information

Notes on contributors

Debopoma Kar Ray

Debopoma Kar Ray was born in Kolkata, West Bengal, India on 19 March 1986. She graduated from the Academy of Technology, India, with a BTech degree in electrical engineering in 2008 and completed MTech in electrical engineering electrical power from the University of Calcutta in 2012. She is presently pursuing her PhD from the University of Calcutta. She has authored around 11 papers published in international and national journals and conferences. Presently, she is Assistant Professor in the Department of Electrical Engineering, MCKV Institute of Engineering, Kolkata. Her special fields of interest include power quality analysis, fault diagnosis, and signal analysis.

Surajit Chattopadhyay

Surajit Chattopadhyay was born in Hooghly, West Bengal, India on 9 February 1978. He has obtained BSc degree in physics honours from Ramakrishna Mission Vidyamandir (Belur Math), University of Calcutta in 1998, and then BTech, MTech, in electrical engineering and PhD (Technology) degrees from the Department of Applied Physics at University of Calcutta in 2001, 2003, and 2010, respectively. He has obtained CEng from Engineering Council, UK in 2013. He has authored/coauthored around 107 papers published in international and national journals and conferences and three books. Presently, he is Associate Professor in the Department of Electrical Engineering in Ghani Khan Choudhury Institute of Engineering and Technology (under Ministry of HRD, Govt. of India). He is former Hon. Secretary of the Institution of Engineering and Technology (UK), Kolkata Network since 2013. His field of interest includes electric power quality, fault diagnosis, power system protection, signal analysis, robotics application, and UAV. Corresponding author. Email: [email protected]

Samarjit Sengupta

Samarjit Sengupta was born in Sonamura, Tripura, on 16 March 1953. He has B.Sc. (Honours in physics), BTech, MTech, and PhD in electrical engineering from University of Calcutta. He is a former professor of Department of Applied Physics, University of Calcutta, Kolkata. India. His research interests include power system operation. Email: [email protected]