首页> 外国专利> ASSESSMENT METHOD FOR FLASHOVER FAULTS OF 220 KV OR HIGHER PORCELAIN LIVE TANK CIRCUIT BREAKER

ASSESSMENT METHOD FOR FLASHOVER FAULTS OF 220 KV OR HIGHER PORCELAIN LIVE TANK CIRCUIT BREAKER

机译:220kV及以上瓷带电断路器击穿故障的评估方法

摘要

An assessment method for flashover faults of 220 kV or higher porcelain live tank circuit breakers, including the following steps: step 1, collecting fault current waveform characteristic data from a fault current waveform in a fault oscillograph, said fault current waveform characteristic data including a time duration t1 from an instant of arc quenching to an instant of fault current initiation, a time duration t2 of the fault current, and waveform characteristics of the fault current; step 2, determining the type of the flashover fault according to the fault current waveform characteristic data: the type includes external flashover, restrike internal flashover, and internal flashover on the insulator inner. The assessment is performed based on the oscillographic fault current data. Since different types of flashover fault vary in mechanism, the waveforms thereof also show different features.
机译:一种220 kV及以上瓷火箱断路器闪络故障的评估方法,包括以下步骤:步骤1,从故障示波器中的故障电流波形中收集故障电流波形特征数据,所述故障电流波形特征数据包括时间从灭弧时刻到故障电流发生时刻的持续时间t1,故障电流的持续时间t2,以及故障电流的波形特征;第二步,根据故障电流波形特征数据确定闪络故障的类型:包括外部闪络,重击内部闪络,绝缘子内部的内部闪络。该评估是根据示波器故障当前数据执行的。由于不同类型的闪络故障机制不同,因此其波形也显示出不同的特征。

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