On the basis of a large amount of tests and researches, a new method to measure the capacitance current in distribution network from the secondary winding of PT is presented. In this method, the secondary windings of PT are connected as an open delta and its primary windings are star connected.Three constant currents with different frequencies are injected into the open delta. Then the voltages across the open delta are measured respectively. Using the formulae given in this paper, the capacitance current ...
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