NDLI: Hybrid VNS–LP algorithm for online optimal coordination of directional overcurrent relays

Content Provider	IET Digital Library
Author	Damchi, Yaser Dolatabadi, Mohammad
Abstract	Optimal coordination of directional overcurrent relays (DOCRs) in interconnected power systems is a highly constrained, non-convex and non-linear optimisation problem. In this study, use of a series of linear programming (LP) problems in a variable neighbourhood search (VNS) framework is proposed, in which pickup current settings can be considered either as continuous or discrete variables. Therefore, the proposed hybrid algorithm (VNS–LP) is suitable for coordination problem-solving in a network with different types of DOCRs. Furthermore, two versions of the VNS algorithm are proposed, the first of which is very easy to implement, while, the other is somewhat more sophisticated, and at the same time much faster and possibly suitable for online coordination in smart grids applications. One advantage of the second algorithm is that it relies only on elementary arithmetic and requires low RAM, which makes it implementable in any low-level programming environment. This, in turn, can increase the interoperability, which is of crucial importance when automating tasks. The efficiency of the proposed algorithm was investigated in several test systems. Numerical results indicate that the two proposed approaches outperform the previous methods. Moreover, the coordination problem is solved in a reasonably short time using a faster approach.
Starting Page	5447
Ending Page	5455
Page Count	9
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 23, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/23
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.1811
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-09-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Continuous Variables Coordination Problem-solving Directional Overcurrent Relays Discrete Variables DOCR Elementary Arithmetic Hybrid VNS–LP Algorithm Interconnected Power System Linear Programming Problem Low-level Programming Environment Nonconvex Optimisation Problem Nonlinear Optimisation Problem Online Coordination Online Optimal Coordination Optimisation Optimisation Technique Overcurrent Protection Pickup Current Settings Power System Economics Power System Interconnection Power System Managemen Power System Operation Power System Protection RAM Relay Protection Search Problem Smart Grid Application Smart Power Grid Variable Neighbourhood Search Framework VNS Algorithm VNS Framework
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Hybrid GSA-SQP algorithm for optimal coordination of directional overcurrent relays

Adaptive differential evolution algorithm for solving non-linear coordination problem of directional overcurrent relays

Protection coordination of directional overcurrent relays: new time current characteristic and objective function

Hybrid mixed-integer non-linear programming approach for directional over-current relay coordination

Optimal coordination of directional overcurrent relays in power systems using Symbiotic Organism Search Optimisation technique

Robust coordination of directional overcurrent relays using a matheuristic algorithm

Reducing the scenarios of network topology changes for adaptive coordination of overcurrent relays using hybrid GA–LP

An analytic approach for optimal coordination of overcurrent relays

Optimal coordination of distance and overcurrent relays considering a non-standard tripping characteristic for distance relays

Hybrid VNS–LP algorithm for online optimal coordination of directional overcurrent relays

Similar Documents

Hybrid GSA-SQP algorithm for optimal coordination of directional overcurrent relays

Adaptive differential evolution algorithm for solving non-linear coordination problem of directional overcurrent relays

Protection coordination of directional overcurrent relays: new time current characteristic and objective function

Hybrid mixed-integer non-linear programming approach for directional over-current relay coordination

Optimal coordination of directional overcurrent relays in power systems using Symbiotic Organism Search Optimisation technique

Robust coordination of directional overcurrent relays using a matheuristic algorithm

Reducing the scenarios of network topology changes for adaptive coordination of overcurrent relays using hybrid GA–LP

An analytic approach for optimal coordination of overcurrent relays

Optimal coordination of distance and overcurrent relays considering a non-standard tripping characteristic for distance relays

Hybrid VNS–LP algorithm for online optimal coordination of directional overcurrent relays