Gaoya dianqi, 2017 为了分析双断口真空容性开断在断口非同期动作条件下的最佳燃弧时间,文中分析了双断口真空容性开断断口电压分布特性,研究了开断过程断口过电压计算表达式。采用电路原理分析方法,从理论上计算了不同燃弧时间下的断口过电压值。并对实际样机真空开断重燃特性进行了试验验证。基于理论计算结果及试验结果,给出了40.5 kV双断口真空永磁机构容性负载投切真空断路器燃弧时间参考值。
刘波 +4 more
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Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2023 Ma XJ, Dong C.
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Gaoya dianqi, 1987 1.简介 当真空断路器触头分开时,会产生金属蒸气电弧放电,在电弧电流超过10kA时,自生磁场会使电弧产生严重的收缩。 触头局部过热不仅会引起触头严重烧损,而且会降低触头的开断能力。这是由于产生高密度金属蒸气的缘故。因而就很有必要研究电弧的运动特性。 以前主要通过光学方法(例如高速摄影法)对装有观察窗的真空灭弧室进行研究。对于实际真空灭弧室,可以利用测量灭弧室周围磁场变化来反映电弧旋转。
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Sichuan Da Xue Xue Bao Yi Xue Ban, 2021 Peng Y, Lin Y, Yu NW, Liao XL, Shi L.
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