Optimal coordination of over-current relay with Distributed Generation consideration

Author

Maleknia, Mehdi ; Karegar, Hossein Kazemi

Author_Institution

Fac. of Electr. & Comput. Eng., Shahid Beheshti Univ. G.C, Tehran, Iran

Volume

2

fYear

2011

Firstpage

1354

Lastpage

1358

Abstract

Utilizing Distributed Generation (DG) is greatly increasing in recent years. This is mostly because of simple installation, environmental effects and loss reduction due to closeness to the load centers. However, DG installation, especially in distribution networks, raises some problems. One of these problems is over-current (OC) relays coordination. In this paper, DGs´ effects on OC relays in distribution network are studied. An IEEE 8-bus standard system is simulated in MATLAB software. A new method is proposed to optimize the operating time of OC relays in such a way that using DGs in any bus will not affect on the main and backup protection relays operation and coordination. In this method, optimized relays settings are obtained by linear programming approach.

Keywords

IEEE standards; distributed power generation; linear programming; overcurrent protection; power generation protection; relay protection; DG installation; IEEE 8-bus standard system; Matlab software; distributed generation; distribution network; environmental effects; linear programming; load centers; optimization; overcurrent relay protection; Automation; Distributed power generation; Fault currents; Mathematical model; Power systems; Relays; Wind turbines; backup protection; distributed generation; distribution network protection; linear programming; over current relay;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Power System Automation and Protection (APAP), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-9622-8

Type

conf

DOI

10.1109/APAP.2011.6180589

Filename

6180589