风雨环境下220kV复合材料杆塔空气间隙放电特性研究

Research on Air Gap Discharge Characteristics of 220 kV Composite Tower in Windy and Rainy Environment

复合材料杆塔对减少输电线路走廊、提高线路运行可靠性有着积极作用。为深入研究复合材料杆塔的外绝缘特性,实现在220 k V交流输电线路的大规模应用和运行维护,采用220 kV复合材料杆塔真型试品,通过在淋雨的环境中开展了不同风速条件下模拟系统电压、操作过电压和雷电过电压对试品进行工频闪络、冲击电压试验,得到了复合材料杆塔风雨环境下闪络放电的特点,丰富了复合材料杆塔的外绝缘特性数据,可为下一步我国复合材料杆塔大规模运用提供一定的技术参考。

Composite tower plays a positive role in reducing transmission line corridor and improving line operation reliability. In order to deeply study the external insulation characteristics of composite tower and realize the large-scale application and operation maintenance of 220 kV AC transmission line,the 220 kV composite tower was used to simulate the system voltage,switching overvoltage and lightning overvoltage under different wind speed conditions in the rainy environment,and the power frequency flashover and impulse voltage tests were carried out on the test object and the flashover discharge characteristics of composite tower under windy and rainy environment were obtained,which enriched the data of external insulation characteristics of composite tower. It can provide certain technical reference for the next large-scale application of composite tower in China.