Field based case studies on optimal coordination of overcurrent relays using Genetic Algorithm

Author

Ghogare, Jagdish Madhukar ; Bapat, V.N.

Author_Institution

Dept. of Electr. Eng., Sinhgad Inst. of Technol., Lonavala, India

fYear

2015

fDate

5-7 March 2015

Firstpage

1

Lastpage

7

Abstract

To avoid the larger area coming under outages, the coordination of Overcurrent (OC) relays in an interconnected power system is required. Fast isolation of fault is possible by minimizing operating time of OC relays by optimizing Time Multiplier Settings (TMS). Coordination problem with constraints is formulated as a linear programming problem. This paper presents optimization of OC relays coordination using Genetic Algorithm (GA). The objective is to minimize the time of operation by finding optimum TMS of relays. Two case studies are presented in this paper. The optimal coordination is utilized to obtain the optimal TMS of OC relays in a realistic power system in India.

Keywords

fault diagnosis; genetic algorithms; linear programming; overcurrent protection; power system faults; power system interconnection; power system reliability; relay protection; GA; India; OC relay; TMS; fault isolation; genetic algorithm; linear programming problem; operating time minimization; overcurrent relay optimal coordination; power system interconnection; time multiplier setting; Impedance; Relays; Substations; Constrained optimization; Genetic Algorithm; Pickup current; Time dial settings; linear programming problem;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical, Computer and Communication Technologies (ICECCT), 2015 IEEE International Conference on

Conference_Location

Coimbatore

Print_ISBN

978-1-4799-6084-2

Type

conf

DOI

10.1109/ICECCT.2015.7225940

Filename

7225940