A Dual Fundamental Current Extraction Controller for DSTATCOM in the Distribution System for Power Quality Improvement Under Non-Ideal Source Voltage Condition

Abstract

Most of the controllers often fail to work properly when encountered with power quality (PQ) issues like unbalanced and distorted grid voltage conditions in three-phase distribution system (TPDS). To address this problem, usually a dynamic static compensator (DSTATCOM) is utilized in TPDS. For enhanced performance, a novel dual fundamental component extraction (DFCE) technique is proposed for generating reference currents (RC) in a TPDS exhausting DSTATCOM. The proposed controller is highly effective for reactive power compensation and source current harmonic suppression under source unbalanced voltages condition with nonlinear load conditions. For computation of RC and phase synchronization, the controller extracts the required fundamental voltage and current at the same time. Consequently, the controller is able to control DSTATCOM operation in TPDS without any phase locked loop (PLL) and low pass filter (LPF). For generation of fundamental components of voltage and current, projected controller utilizes the self-tuning filter (STF). The efficacy of the controller is established in comparison to existing controllers like synchronous reference frame theory, p-q theory and STF-p-q under different grid voltage conditions. To enhance PQ, the suggested controller works efficiently for fundamental current component extraction without using PLL and low/high pass filter in case of grid distorted voltage condition.

Keywords:

• dynamic static compensator (DSTATCOM)
• unbalanced/distorted source voltage
• power quality
• self-tuning filter (STF)

Disclosure Statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Atma Ram

Atma Ram was born in 1985 in India. He received his B.Tech. (Electrical Engineering) from Kurukeshetra University in 2007 and M.Tech. (Power System and Drives) from J.C. Bose University of Science and Technology, YMCA (formerly YMCA University of Science and Technology), Faridabad in 2012. He is currently working as an Assistant Professor at Department of Electrical Engineering, J.C. Bose University of Science and Technology, YMCA, Faridabad. His research areas include power system, power electronics and drives, renewable energy, active filters and power quality. E-mail: [email protected]

Parsh Ram Sharma

Parsh Ram Sharma was born in 1966 in India. He received his B.Tech. (Electrical Engineering) from REC Kurukeshetra in 1988, M.Tech. (Power System and Drives) from PEC, Chandigarh, Punjab in 1992 and Ph.D. in 2005 from MDU, Rohtak. He is currently working as Professor in Department of Electrical Engineering, J.C. Bose University of Science and Technology, YMCA, Faridabad. He has supervised a number of projects/thesis. He has published more than 100 papers in reputed journals and IEEE conferences. His research areas of interests include power system, FACTS, renewal energy, active filters, power electronics, drives, and power quality. E-mail: [email protected]

Rajesh Kumar Ahuja

Rajesh Kumar Ahuja has received his B.E. from Nagpur University, M.Tech. from IIT Khargpur and Ph.D. from IIT Delhi. He has more than 20 years of teaching experience and currently working as Professor in Department of Electrical Engineering, J.C. Bose University of Science and Technology, YMCA, Faridabad, Haryana, India. He has supervised a number of project/thesis works in his area. He has published more than 50 papers in reputed journals and conferences few papers in international journals and IEEE conferences. His areas of research belong to power system, FACTS, renewal energy, active filters, power electronics and drives and power quality. E-mail: [email protected]

Yogendra Arya

Yogendra Arya is currently an Associate Professor at J.C. Bose University of Science and Technology, YMCA, India. He has published 50-plus research papers in reputed international journals. He has received “MSIT Best Faculty Award” in 2018 and ”MSIT Certificate of Excellence in Research” in 2018 and 2019. He has been placed among “Top 2% of Researchers in the World” for the years 2019, 2020, and 2021 by Stanford University, USA. He is a regular reviewer of leading journals including IET and IEEE Transactions/journals. He has Google Scholar citations of 2800-plus and h-index of 30-plus. He has received “Best Associate Editor Award-2021 and 2022” from Journal of Electrical Engineering and Technology. He is Associate Editor of a few SCIE journals. He is Fellow of IETE, Senior Member of IEEE, AMIE(I) and Life Member of ISTE. His major areas of research interests include AGC/LFC in smart grid, energy storage systems, renewable energy systems, optimization techniques, fuzzy control and control system.