Analysis of Current Vector Measurement Method in One and a Half Breaker Connection Mode

摘要

This paper analyzed method of current vector measurement in one and a half breaker connection mode. First, accuracy definition of CT polarity was discussed and declaration of which definition was used in this paper was made. Then, CT polarities of line, busbar differential protection were discussed and measuring results of current vector in different CT polarities were analyzed. Finally, taking measuring results of current vector in project case as an example, this paper provided reference for engineering practice in current vector measurement.