Protect the small busbar BM
Literature review has shown that small distribution substations used for medium voltage make use of overcurrent relays to provide busbar protection and large substations make use of differential protection schemes. Busbars in power systems are the location where transmission lines, generation sources, and distribution loads converge. Current Differential Protection: This protection method connects CT secondaries in parallel and. Instability of the power system might be caused by case of a failure to trip during an external fault or false tripping during service of the busbar. The bus zone fault occurs because of various reasons likes failure of support insulators.
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