method and apparatus for eliminating compensator impact in line distance protection

摘要

"method and apparatus for eliminating the impact of the compensator in line distance protection", there is a method and apparatus for eliminating the impact of a compensator in line distance protection, the method comprising: obtaining a first current a line connected to a compensator or converters in series on the compensator, and a first voltage of a bus connected to the compensator or line connected to the compensator; output of series converters and series transformers if the first current is greater than a pre-established current limit and a duration is greater than a first pre-established time limit; output of series converters and series transformers if the first voltage is less than or equal to a pre-established voltage limit and the duration is greater than a second pre-established time limit by adjusting the output voltage of the series converters to zero, and if a second current of an element corresponding to the first current meets the conditions that the first current needs to meet; on the other hand, cancel the output voltage adjustment of the series converters to zero and obtain a first current if a second line voltage corresponding to the first voltage is greater than the pre-established voltage limit and the duration is longer than a third pre-established time limit.