【摘要】 分析了断路器分闸于故障线路时所引起的暂态行波的产生机理。在此基础上,提出了一种新的单端行波故障测距原理,即利用故障线路分闸暂态行波的F型现代行波故障测距原理,并将其划分为4种运行模式,即标准模式、扩展模式1、扩展模式2和综合模式。理论分析和实测波形分析均表明该原理是可行的,可以同时适用于永久性故障和瞬时性故障,而且不受电压过零故障的影响,在标准模式下还不受线路对端母线反射波的影响,从而克服了现有单端行波故障测距原理所存在的不足。更多还原

【Abstract】 The generation mechanism of transient travelling waves caused by fault tripping of transmission lines is analyzed. Based on the analysis a novel principle, type F modern travelling wave based fault location principle, is presented. The type F principle can be classified into four independent modes of operation which are called standard mode, extended mode 1, extended mode 2 and consolidated mode respectively. Theoretical analysis and actual waveforms based transient analyses show that the type F principle is feasible and it can be applied to permanent and transient faults. The type F principle is not affected by zero crossing faults and further the bus reflected surges coming from the opposite terminal of the faulty line under the standard mode. Hence, it overcomes the limitations of the existing single-ended travelling waves based fault location principles.更多还原