【摘要】 就消弧线圈接地系统的接地选线问题,论文进行了详尽的分析和研究,特别是推出了专利(200510020427.9)提出的单相接地选线方法,该方法采用瞬变信号正弦逼近方法求取线路零序电流的瞬时幅值和瞬时初相位,实现了基于单相接地瞬间暂态特征的接地选线原理和基于消弧线圈补偿特征的接地选线原理,其选线适应性强和选线准确率高,是一种在原理上和实现方法上都理想的消弧线圈接地系统接地选线方法。论文还给出了该方法在现场应用中的接地选线结果。更多还原

【Abstract】 In order to cope with the problem of fault line selection in network grounded with arc extinguishing coil,a technique of fault line selection presented in literature [4] is exhibited. Calculating the instantaneous amplitude and instantaneous initial phase by sinusoid approximation of instantaneous signal,the technique of fault line selection based on instantaneous transient character and compensating character is realized. Applied results show that the technique is fine in adaptability and accuracy of fault line selection,so it is perfect in theory and implementation. Some results of practical fault line selection are given in this paper.更多还原