【摘要】 综合分析了各个参数对电流耦合器幅频特性的影响 ,设计并研制了具有最优幅频特性的罗戈夫斯基线圈型电流耦合器。与 IEC-2 70推荐的电容耦合法进行比较 ,电磁耦合法具有较高的灵敏度。通过对存在缺陷的XLPE电力电缆线段的检测表明 ,电磁耦合法能较好的反映其局部放电特性。更多还原

【Abstract】 The effect of various parameters on amplitude and frequency characteristics of current coupler is comprehensively analysed, and a Rokovsky coil type current coupler with optimal amplitude freguency characteristics has been developed. Electromagnetic coupling detecting method has higher sensitivity in compare with capacitance coupling detection method recommended by IEC 270. The detection of defected XLPE cable section, showed that electromagnetic coupling method can better reflect the characteristics of partial discharge of the cable.更多还原