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A. N. Sarwade, P. K. Katti and J. G. Ghodekar, “Transmission Line Protection by Adaptive Digital Distance Relay,” International conference on Electrical Engineering, ICEE-2010, Penang, Vol. 62, 24-26 February 2010, pp. 1111-1115.

has been cited by the following article:

• TITLE: A New Adaptive Technique for Enhancement of Zone-2 Settings of Distance Relay

  AUTHORS: Avinash N. Sarwade, Pradeep K. Katti, Jayant G. Ghodekar

  KEYWORDS: Power Systems; Distance Protection; Zone-2 Settings and Adaptive Protection

  JOURNAL NAME: Energy and Power Engineering, Vol.4 No.1, January 17, 2012

  ABSTRACT: This paper presents a technique that increases the second-zone coverage of distance relays without causing overreach problems. The technique is based on the impedance seen by distance relays when faults are simulated on the reach of zone-1 relays. The approach checks the relay operation for the maximum as well as the minimum generation outputs of the power system. The proposed technique can be used for different reach setting for zone-1. Results show that it is possible to increase the coverage provided by zone-2 distance relays without causing coordination problems with the primary relays that protect the lines emanating from the remote bus. The proposed method is modified for use in an adaptive protection system. It is shown that further improvements can be achieved when settings are calculated using the proposed method and the prevailing system conditions. The proposed method and its adaptive version were applied to a part of the Power system. The simulation of the system is done by using PSCAD-EMTDC software. The simulated results are observed and compared with the conventional and proposed technique.