基于有限元方法对高压架空输电线路风偏电场的研究

Research on the wind bias electric field of high voltage overhead transmission lines based on the finite element method

中国地域辽阔气候复杂,架空输电线路经常面临风速大、飑线风多以及其它恶劣天气因素的影响,导致频繁出现输电线路风偏故障,对电力系统安全运行构成严重威胁。导线周围的电场能够反映输电线路风偏情况,对输电线路风偏电场的研究有利于风偏故障的防治。本文基于有限元方法对西北电网330kV架空输电线路风偏电场进行模拟,获取了输电线路周围电场分布的仿真结果。根据不同风速下输电线路的电场分布,采取相应的防风措施,可以大大降低风偏故障发生概率,这对电力系统的安全运行具有重要的工程意义和经济价值。

China has a vast territory and complex climate,overhead transmission lines often face high wind speed,squall line wind and other weather factors influence, resulting in frequent transmission line windage yaw fault, which poses a serious threat to the safe operation of the power system. The electric field around the conductor can reflect the wind bias of the transmission line, which is conducive to the prevention and control of the wind bias fault. Based on the finite element method, the wind bias field of 330 kV overhead transmission line in the northwest power grid is simulated, and the simulation results of the distribution of the electric field around the transmission line are obtained.According to the different wind speed transmission line of electric field distribution, take corresponding precautionary measures, can greatly reduce the wind leaning fault probability, the safe operation of power system has important engineering significance and economic value.