人体对带电作业间隙放电特性的影响研究

Research on the influence of human body on discharge characteristics of live working gap

以超特高压典型等电位和地电位作业方式的间隙结构为研究对象,利用真型试验获取了不同工况下等电位人员与杆塔构架和分裂导线与地电位人员构成的作业间隙的放电特性,计算得到了不同类型作业间隙的间隙系数和先导起始电压。通过试验数据对比分析了不同作业位置、操作姿态和线路结构对带电作业间隙绝缘性能的影响,并结合Rizk先导起始模型分析了各类因素的作用机理和影响规律,最后为带电作业的实际操作提出了建议。

In the paper,the typical equipotential and ground potential operation modes in extra high voltage(EHV)and ultra high voltage(UHV)live working are chosen as the study objects.Discharge characteristics of the equipotential body-tower gaps and the split conductor-ground potential worker gaps are obtained,and the gap factors and the pilot initiation voltages of different gap structures are calculated through experiment.Based on the experimental results,the influence of different positions,operating postures and line structures on the live working gap insulation performance are analyzed.Combining with Rizk pilot initiation model,the action mechanism and influence laws of various factors are analyzed.Finally,suggestions for the practical operation are put forward.