关键词: 输电线路, 复合绝缘子, 风偏, 仿真

Abstract: Taking a 220 kV wire in Ningxia with frequent wind deviation faults as an example, this paper firstly establishes wind deviation models of composite insulators by using concentrated load and distributed load methods respectively, and analyzes the differences between the two methods. Secondly, based on the models, simulation calculation models of wind deviation of composite insulators plus wires under wind deviation prevention measures such as splayed strings, V-strings, stay wires and heavy hammers are established, and compares the wind prevention effects of the different measures. The results show that the difference range of wind deviation results obtained through the concentrated load method and the wind deviation load method at different wind speeds is within 8% to 48.57%. V-shaped composite insulator strings and stay wires show the best wind deviation prevention effects, but their application range is limited, with the former limited by the position of use and the latter by floor width. The wind deflection angle of the splayed composite insulator string decreases with the increase of the insulator angle γ, but its wind deflection prevention mainly depends on the reduction of the equivalent insulator length. The wind deviation prevention effect of the heavy hammers is limited, which needs to be combined with other measures.