Novel Sensitive Current Differential Protection of Transmission Line

Author

Dambhare, Sanjay ; Soman, S.A. ; Chandorkar, M.C.

Author_Institution

Dept. of Electr. Eng., Coll. of Eng., Pune

fYear

2008

fDate

12-15 Oct. 2008

Firstpage

1

Lastpage

6

Abstract

This paper proposes a novel approach for sensitive current differential protection of transmission line. The improvement in sensitivity is a result of adaptive control of the restraining region in a current differential plane. The discriminant function used in differential protection corresponds to the ratio of series branch current in the pi- equivalent model of the transmission line. It requires time synchronous measurements which can be obtained from Global positioning system (GPS). Electromagnetic transient program (EMTP) simulations on a four machine ten bus system are used to substantiate the claims. The results brings out the superiority of the proposed approach.

Keywords

EMTP; Global Positioning System; adaptive control; power system protection; power transmission lines; Global Positioning System; adaptive control; discriminant function; electromagnetic transient program simulations; pi-equivalent model; sensitive current differential protection; series branch current; time synchronous measurements; transmission line; Delay effects; EMTP; Global Positioning System; Optical fiber communication; Power system protection; Power system relaying; Power transmission lines; Protective relaying; Transmission lines; Voltage; Adaptive protection; Current differential protection; GPS;

fLanguage

English

Publisher

ieee

Conference_Titel

Power System Technology and IEEE Power India Conference, 2008. POWERCON 2008. Joint International Conference on

Conference_Location

New Delhi

Print_ISBN

978-1-4244-1763-6

Electronic_ISBN

978-1-4244-1762-9

Type

conf

DOI

10.1109/ICPST.2008.4745368

Filename

4745368