An analytic approach for optimal coordination of overcurrent relays
Open Access
- 1 July 2013
- journal article
- research article
- Published by Institution of Engineering and Technology (IET) in IET Generation, Transmission & Distribution
- Vol. 7 (7), 674-680
- https://doi.org/10.1049/iet-gtd.2012.0721
Abstract
This study presents a new analytic approach to optimal coordination of directional overcurrent relays. This approach is based on the selection of optimum pickup current and time dial setting, in order to obtain minimum operating time for the relays, while satisfying various coordination and boundary constraints. Based on the new optimal relay setting procedure, an iterative numerical solution is proposed. The proposed numerical algorithm converges to the global optimum values, which are independent of initial values and the order of relay setting. The proposed method is applied to three different test systems. The new method is compared with some previously proposed analytic and evolutionary approaches. The results demonstrate the advantages of the proposed method over the previous works.Keywords
This publication has 12 references indexed in Scilit:
- Coordination of Directional Overcurrent Relays Using Seeker AlgorithmIEEE Transactions on Power Delivery, 2012
- A novel method for optimal coordination of directional overcurrent relays considering their available discrete settings and several operation characteristicsElectric Power Systems Research, 2011
- A new comprehensive genetic algorithm method for optimal overcurrent relays coordinationElectric Power Systems Research, 2008
- A New Nonlinear Directional Overcurrent Relay Coordination Technique, and Banes and Boons of Near-End Faults Based ApproachIEEE Transactions on Power Delivery, 2006
- Optimal coordination of overcurrent relays using a modified particle swarm optimizationElectric Power Systems Research, 2006
- Coordination of directional overcurrent relay timing using linear programmingIEEE Transactions on Power Delivery, 1996
- An application of functional dependencies to the topological analysis of protection schemesIEEE Transactions on Power Delivery, 1992
- Coordination of directional relays without generating all circuitsIEEE Transactions on Power Delivery, 1991
- Optimal coordination of directional overcurrent relays in interconnected power systemsIEEE Transactions on Power Delivery, 1988
- Computer aided coordination of directional relays: determination of break pointsIEEE Transactions on Power Delivery, 1988