期刊论文

Analysis of Potential Shift Characteristics of Live Working on ±800 kV UHVDC Transmission Line

中文

高压电器

1001-1609

2020

56

3

164-168,175

10.13296/j.1001-1609.hva.2020.03.024

Project Supported by Scientific Research Foundation of Hunan Provincial Education Department(15C0031).

本校为第一机构

为保障进行±800 kV输电线路带电作业人员的人身安全,对带电作业人员电位转移特性的研究有助于制定合适的安全防护措施。通过建立作业人员进行电位转移过程中基于流体动力学的棒-板间隙放电模型,仿真得到了人与导线间的空气间隙电场强度变化特性,计算了转移过程中的暂态能量,分析了转移距离为0.3~0.6 m时电位转移能量数值的分布特点。结果表明,不同转移距离下的转移能量均在1.0 J附近,随着转移距离的增大,转移能量有所增加,而转移能量高于1.0 J时,导电手套存在被烧蚀的风险,因此作业人员进行±800 kV输电线路带电作业电位转移宜使用电位转移棒进行电位转移,确保作业人员的人身安全。

In order to ensure the safety of workers while live working on ±800 kV transmission line, the analysis of the potential transfer characteristics is helpful to take appropriate safety-protection for operating personnel. By establishing the model of the rod-plate gap discharge based on hydrodynamics theory during the process of potential transfer, the electric field intensity of the air gap between the worker and the transmission lines is acquired, the transient energy during potential shift is calculated, and the value of potential transfer ene...