同廊道交直流输电线路带电作业安全防护研究

超/特高压交直流并行线路带电作业区域电压高、场强大，为保证并行线路带电作业的安全开展，需要对带电作业人员安全防护进行研究。分析了带电作业的安全影响因素，依据线路实际尺寸建立了1∶1计算模型，采用有限元法对同走廊四回并行线路进行了电场仿真，获得了带电作业典型位置点的电场强度，根据仿真结果对带电作业人员电位转移放电能量进行了计算。同时建立了人体模型，计算分析了等电位作业工况下人体不同部位的电场强度特点。计算结果表明：同电压等级独立走廊带电作业安全防护措施同样适合于四回并行线路带电作业。提出了相应的安全防护措施，研究结果可为同走廊多回并行线路带电作业的开展提供依据和技术支撑。

Safety Protection for Live Working of AC/DC Parallel Transmission Lines

The live working of UHV/EHV AC/DC parallel transmission lines have the characteristics of high regional voltage and strong electric field. To ensure the safety of live working on parallel lines, the safety protection for live working was researched. This paper analyzed the influencing factors of the safety of live working； established a 1:1 computing model based on the actual size of the line； analyzed the electric field of four-circuit parallel lines with using the finite element method； obtained the electric field strength of a typical location in live working； and calculated the discharge energy generated by potential transfer according to the simulation results. Then, a human body model was established to analyze the electric field intensity of the human body in different parts during equipotential working. The results show that: under the same voltage, the safety protection measures for live working on independent corridor are also suitable for live working on parallel transmission lines. Finally, corresponding safety protection measures were suggested. The research results can provide the basis and technical support for live working on parallel transmission lines in same corridor.