S-Transform Based Kurtosis Analysis for Detection of LG and LL Faults in 14 Bus Microgrid System

Abstract

Low currents and voltage levels in a microgrid system make the fault detection by the conventional methods, very difficult. Due to ground faults voltage level drops to a very low level and thus, it becomes even more difficult to detect in case of a microgrid system. In this paper, a method of fault location identification and discrimination of fault type has been proposed. IEEE standard 14 bus microgrid system has been considered for this purpose. Faults are made to occur in two specific load buses and the outgoing currents of two generator buses were analysed in different conditions. S-Transformation is performed on the generator bus outgoing currents and kurtosis of the S-Transformation matrices has been calculated. An algorithm has been proposed for the detection of fault type and location. It has also been verified with different unknown cases. The simulation is carried out on the IEEE standard 14 bus system using MATLAB. The method presented here may be useful for the design of better protection schemes for such systems.

KEYWORDS:

• Digital signal processing
• Fault current
• Fault detection
• Fault location
• Kurtosis
• Microgrid
• Statistical analysis
• Stockwell transform

Additional information

Notes on contributors

Sagnik Datta

Sagnik Datta was born in Serampore, Hooghly, West Bengal, India, on 7 October 1985. He has obtained BTech degree in electrical engineering from West Bengal University of Technology in 2008, and then ME in illumination engineering from the Electrical Engineering Department of Jadavpur University in 2013. Presently, he is an assistant professor in the Department of Electrical Engineering of Supreme Knowledge Foundation Group of Institution, Mankundu, West Bengal, India. His field of interest includes electrical fault diagnosis, power system protection, signal analysis.

Aveek Chattopadhyaya

Aveek Chattopadhyaya was born in Hooghly, West Bengal, India, on 2 May 1985. He has obtained BTech degree in electrical engineering from West Bengal University of Technology in 2007, and then ME in electrical engineering from the Electrical Engineering Department of Bengal Engineering and Science University in 2009 and PhD (Tech) from the Department of Applied Physics, University of Calcutta in 2017. He has authored/coauthored around 25 papers published in international and national journals and conferences. Presently, he is an assistant professor in the Department of Electrical Engineering, Supreme Knowledge Foundation Group of Institution, Mankundu, West Bengal, India. His field of interest includes electrical fault diagnosis, power system protection, power quality, signal processing. E-mail: [email protected]

Surajit Chattopadhayay

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 (Belurmath), University of Calcutta in 1998 and then BTech, MTech, in electrical engineering and PhD (Technology) degrees from the Department of Applied Physics of University of Calcutta in 2001, 2003 and 2010, respectively. He has obtained CEng from Engineering Council, UK, in 2013. He has authored/co-authored around 120 papers and 3 books. Presently, he is an associate professor in the Department of Electrical Engineering, Ghani Khan Choudhury Institute of Engineering and Technology (under Ministry of HRD, Govt of India). He is former Hony Secretary and present CCSA member of the Institution of Engineering and Technology (UK), Kolkata . His field of interest includes electric power quality, fault diagnosis, power system protection, signal analysis, robotics application and UAV. E-mail: [email protected]

Arabinda Das

Arabinda Das was born in 1966. Presently he is an Associate Professor in the Electrical Engineering Department, Jadavpur University, India. Before joining in Jadavpur University in 1999, he has worked as a Lecturer in Regional Engineering College (presently NIT, Durgapur), Durgapur, India since 1996. He obtained his B.Tech., M.Tech. and Ph.D. (Tech.) degrees in 1990, 1992 and 2000 respectively in Electrical Machines and Power System from the University of Calcutta. His field of interest is the application of microprocessor/microcontroller in electrical engineering and Modelling and Simulation of Electrical Systems. Das has guided a number of students leading to Ph.D. and published a number of research articles in National and International journals and conferences. He is the recipient of Railway Board Prize, The Union Ministry of Energy – Department of Power Medal, The Corps of Electrical and Mechanical Engineers Medal from The Institution of Engineers (India), etc. Das is the Fellow of The Institution of Engineers (India) and Fellow of The Institution of Electronics and Telecommunication Engineers. E-mail: [email protected]