An Optimal Islanding Detection Scheme for an Inverter-based Distribution Generation System

Authors

  • Bineeta Soreng Dept. of Electrical Engineering, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha, India
  • Raseswari Pradhan Dept. of Electrical Engineering, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha, India

DOI:

https://doi.org/10.13052/dgaej2156-3306.3625

Keywords:

DGS, islanding detection, modified H8-based controller, opti- mal solution, Reactive power control, LMI.

Abstract

In this paper, an optimal controller-based islanding detection scheme is pro-
posed for an inverter-based distributed generation system (DGS). Islanding is
both harmful and unsafe but unavoidable state in a DGS. Therefore, islanding
state is required to be detected quickly and accurately. A reactive power
control strategy for islanding is presented in this work. It is reported that
the active and reactive power mismatches in a DGS forces its voltage or
frequency to deviate. That deviation is recorded continuously in this scheme
and islanding state is reported when the deviation touches the thresholds.
To help in this tracking process, a modified H8-based optimal controller
whose parameters are tuned with LMI is proposed. It can offer both feedback
and feed-forward control actions. The proposed DGS is modelled using
MATLAB/SIMULINK and tested taking several case studies. It is found that,
islanding condition is rapidly detected compared to that of the uncontrolled
scheme yielding an optimal solution. Further, it is an inexpensive, robust,
compact in structure and very easy to implement too.

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Author Biographies

Bineeta Soreng, Dept. of Electrical Engineering, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha, India

Bineeta Soreng, received the M.Tech degree in Electronics and Communi-
cation Engineering in 2013 from National Institute of Technology, Rourkela,
India and B.Tech degree from College of Engineering and Technology,
Bhubaneswar, Odisha in Electrical Engineering in 2010. She is currently
working as an Assistant Professor in the Department of Electrical Engineer-
ing, Veer Surendra Sai University of Technology, Burla, India Her research
interests include distributed generation and its islanding detection techniques
and power electronics.

Raseswari Pradhan, Dept. of Electrical Engineering, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha, India

Raseswari Pradhan was born in Bargarh, Odisha, India. She got her Ph.D.
degree in control system engineering from National Institute of Technology,
Rourkela, India in 2014. She got her B.E. and M.E. degrees in electrical
engineering from I.G.I.T., Sarang, Utkal University, Odisha and Jadavpur
University, Kolkata, respectively. She has served as faculty in some of the
renowned Technical colleges and universities like NIST Berhampur, KIIT Bhubaneswar etc. Currently she is serving as an Assistant Professor in
the Department of Electrical Engineering, Veer Surendra Sai University of
Technology, Burla, India. She has research publications in various reputed
journals, book chapters and conference proceedings. Till the date, she has
guided several M.Tech. and B.Tech. research scholars. Now in year 2021, four
Ph.D. scholars and two M.Tech. scholars are working under her guidance. Her
research interests include control, renewable energy and microgrid stability
and industrial Electronics.

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Published

2021-06-24

How to Cite

Soreng, B. ., & Pradhan, R. . (2021). An Optimal Islanding Detection Scheme for an Inverter-based Distribution Generation System. Distributed Generation &Amp; Alternative Energy Journal, 36(2), 169–202. https://doi.org/10.13052/dgaej2156-3306.3625

Issue

2021: Vol 36 Iss 2

Section

Articles