Abstract
Change in the network structure or operating condition in a power system affects the impedance as calculated by the distance relay during fault. Such changes may lead to malfunction of the distance relay at times. In this paper, an adaptive distance relay setting method using local data is proposed to prevent zone-1 malfunction following structural and operational changes. The performance of the proposed adaptive setting method is tested on a 39-bus New England system and a generic 12-bus power system using PSCAD/EMTDC simulation data, and a comparative assessment is also provided.
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