江门市区10kV架空线路雷击分析和防治措施

Lightning Analysis and Protection for 10 kV Overhead Transmission Lines in Urban Districts of Jiangmen

以江门市区10kV架空线路雷击率为研究对象,以架空线路年雷击率计算理论为基础,对年均公里雷击率理论值与实际值进行比较分析。分析结果表明,市区裸导线的年均公里雷击率低于理论值的50%,绝缘导线的年均公里雷击率基本接近理论值,各镇线路的年均公里雷击率都超过理论值。最后针对存在的问题,提出了有效防雷措施和方法。

With the study on the lightning strike rate of 10 kV overhead transmission lines in urban districts of Jiangmen,China and based on the computational theory of annual lightning strike rate of overhead lines,the theoretical value and the actual value of the annual average lightning strike rate per kilometer are compared and analyzed.Analytical results show that the actual value of urban plain conductors is 50% lower than the theoretical value,the actual value of insulated conductors close to the theoretical value and the actual value of township power lines over the theoretical value.In response to the existing problems,the paper concludes with effective lightning protection methods.