NDLI: Protection coordination for networked microgrids using single and dual setting overcurrent relays

Content Provider	IET Digital Library
Author	Alam, Mahamad Nabab Gokaraju, Ramakrishna Chakrabarti, Saikat
Abstract	The operation of multiple microgrids (MGs) with distribution system enhances reliability and resiliency of the power supply significantly by enabling high penetration of locally available distributed energy resources (DERs). However, there are several issues in the proper operation of multiple MGs that need to be addressed. Providing proper protection coordination is one of the most important issues in the coordinated operation of networked MGs (NMGs). In this study, an efficient protection coordination scheme for NMGs is proposed by utilising the commonly used numerical directional overcurrent relays (DOCRs) with single and dual settings. Issues related to the operation of NMGs such as the change in network topology, connection status of the point of common coupling and low voltage fault ride through of DERs have been considered. The protection coordination problem has been formulated as an optimisation problem and solved using the interior point method. The proposed protection coordination scheme of NMGs has been tested on the 69-bus radial distribution system with the integration of three MGs, which is not reported in earlier literature. The suitability and effectiveness of the proposed DOCRs coordination scheme have been demonstrated.
Starting Page	2818
Ending Page	2828
Page Count	11
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 14, Jul (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.0557
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-04-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	69-bus Radial Distribution System Coordinated Operation DERs Distributed Energy Resources Distributed Power Generation DOCRs Coordination Scheme Dual Setting Overcurrent Relays Efficient Protection Coordination Scheme Interior Point Method Low Voltage Fault Ride Multiple MGs Multiple Microgrid Network Topology Networked MGs Networked Microgrid NMGs Numerical Analysis Numerical Directional Overcurrent Relay Numerical Method Optimisation Optimisation Problem Optimisation Technique Overcurrent Protection Point of Common Coupling Power Distribution Protection Power Generation Fault Power Generation Protection Power Generation Reliability Power Supply Reliability Power Supply Resiliency Power System Protection Protection Coordination Problem Relay Protection Reliability Single Setting Overcurrent Relay
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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