Knowledge Based Approach for Transmission line Distance Relay Coordination
نویسنده
چکیده
The protection of transmission lines is traditionally performed on-line, new pattern recognition techniques should be implemented quickly and flexibly. In this paper, a new approach to enhance the Transmission system distance relay co-ordination is presented. The approach depends on the apparent impedance loci seen by the distance relay during all possible disturbances. In a distance relay, the impedance loci seen at the relay location is obtained by extensive transient stability studies. Support Vector Machines (SVMs), a class of patterns classifiers are used in discriminating zone settings (Zone-1, Zone-2 and Zone-3) using the signals to be used by the relay. Studies on a sample 9-bus are presented for illustrating the proposed scheme.
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