The Differential Protection Scheme for Microgrid Using S-Transform

8 Pages Posted: 15 Apr 2020

See all articles by Anudeep Bhatraj

Anudeep Bhatraj

IIT (ISM), Dhanbad, Jharkhand, India

Paresh Kumar Nayak

Indian Institute of Technology (IIT-ISM), Dhanbad

Sauvik Biswas

IIT (ISM), Dhanbad, Jharkhand, India

Date Written: April 14, 2020

Abstract

The micro-grids with distributed generators enhance the aggregate power supply to the increasing load demand. However, the conventional over current relay protection may fail to operate when magnitude and direction of current differs significantly in grid connected mode and islanded mode depending upon DGs types and generating capacity. This paper presents a differential protection scheme using S-transform for detection and phase identification of faults in distribution systems integrated with different types of DGs. A radial distribution system with photovoltaic and synchronous distributed generators is simulated for data generation in PSCAD/EMTDC software. The proposed technique is tested on various fault cases and confirms accurate detection of faults and correct identification of faulty phases within a cycle for a 50 Hz grid nominal frequency.

Keywords: Distribution System Protection, Distributed Generations, Micro-grid Protection, S-Transform

Suggested Citation

Bhatraj, Anudeep and Nayak, Paresh Kumar and Biswas, Sauvik, The Differential Protection Scheme for Microgrid Using S-Transform (April 14, 2020). Proceedings of the International Conference on Advances in Electronics, Electrical & Computational Intelligence (ICAEEC) 2019, Available at SSRN: https://ssrn.com/abstract=3575414 or http://dx.doi.org/10.2139/ssrn.3575414

Anudeep Bhatraj (Contact Author)

IIT (ISM), Dhanbad, Jharkhand, India ( email )

Department of Electrical Engineering
Dhanbad, Jharkhand 826001
India

Paresh Kumar Nayak

Indian Institute of Technology (IIT-ISM), Dhanbad ( email )

India

Sauvik Biswas

IIT (ISM), Dhanbad, Jharkhand, India ( email )

Department of Electrical Engineering
Dhanbad, Jharkhand 826001
India

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