Spline function based technique for sensitizing of ground Overcurrent relays for sub-transmission and distribution lines

Author

Khanna, Abhishek

Author_Institution

Power Grid Corp. of India Ltd. (POWERGRID), Gurgaon

fYear

2007

fDate

13-16 March 2007

Firstpage

69

Lastpage

77

Abstract

The sensitivity of the overcurrent relays is affected by the feed from the other end and the fault resistance. Both of these are unpredictable as these are dependent on the fault location and system conditions. This paper focuses on a novel technique for the sensitizing (enhancing the sensitivity ) of the ground overcurrent relays. The focus of the paper is to demonstrate the technique for a distribution system with double end feed. The results can be extended to radial systems without any loss of accuracy.

Keywords

fault location; overcurrent protection; power distribution faults; power transmission lines; splines (mathematics); distribution lines; distribution system; fault location; fault resistance; ground overcurrent relays; radial systems; spline function; sub-transmission lines; Circuit faults; Fault location; Feeds; Linear programming; Neural networks; Power system relaying; Protection; Protective relaying; Relays; Spline; Ground Overcurrent relays; IDMT; sensitizing factor; sensitizing function; sensitizing operator; sensitizing variables; spline function;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources, 2007. PSC 2007

Conference_Location

Clemson, SC

Print_ISBN

978-1-4244-0854-2

Electronic_ISBN

978-1-4244-0855-9

Type

conf

DOI

10.1109/PSAMP.2007.4740900

Filename

4740900