By Topic

Implementation of Full Adaptive Technique to Optimal Coordination of Overcurrent Relays

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Mansour Ojaghi ; Electrical Engineering, University of Zanjan, Zanjan, Islamic Republic of Iran ; Zeinab Sudi ; Jawad Faiz

This paper proposes a full adaptive technique for setting all overcurrent (OC) relays in HV substations. This technique can be used online and there is no need to employ a telecommunication infrastructure. It is based on an appropriate equivalent circuit of the power grid in the substation, online estimation of the equivalent circuit parameters, and application of the equivalent circuit to estimate the required short-circuit currents. This full adaptive technique is used in setting the OC relays of a typical 230/20-kV substation connected to a sample 9-bus grid. Significant advantages of the proposed technique over the usual setting method are shown by comparing the corresponding results. Furthermore, the technique is improved to resolve problems due to penetration of distributed generation. Developing this adaptive setting technique is a step toward introducing self-adjustment OC relays.

Published in:

IEEE Transactions on Power Delivery  (Volume:28 ,  Issue: 1 )