高压交流断路器选相合闸不稳定因素分析

Analysis of Unstable Factors for Phase Selection and Closing of High Voltage AC Circuit Breaker

通过试验数据研究影响高压交流断路器选相合闸不稳定的因素。经过分析发现,高压交流断路器选相合闸的不稳定性主要决定因素是断路器合闸时间的分散性,其次是SF_(6)气体预击穿特性,但选相控制器合闸时间的分散性也不可忽略。该研究成果为后续开展选相合闸技术研究提供经验参考。

The factors that affect the instability of phase selection and closing of high-voltage AC circuit breakers are studied through experimental data.Through analysis,it is found that the main determinant of the instability of phase selection and closing of high voltage AC circuit breaker is the dispersion of closing time of circuit breaker,followed by the pre breakdown characteristics of SF_(6) gas,but the dispersion of closing time of phase selection controller cannot be ignored.The research results of this paper provide experience reference for the follow-up research of phase selection and closing technology.