Title :
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
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;
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
DOI :
10.1109/ICPST.2008.4745368
