Driggs, Hogg, Daugherty & Del Zoppo Co., LPA
Synchronization method for current differential protection
A synchronization method for current differential protection comprises: selecting a point on the transmission line protected by the current differential protection; measuring the current and the voltage of each of the terminals of said transmission line; calculating the compensating voltage at the selected point respectively according to the measured current and the voltage of the each terminal; detecting and calculating the synchronization error by comparing all the compensating voltages.
ABB Research Ltd.
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Youyi Zoran Torbjorn Ying Bin
Li Gajic Einarsson Yang Su