多避雷针高度快速设计研究

Research on the Quick Design for Height of Multi Lightning Rods

在多避雷针高度设计时,需尝试取高和绘图校验,工作量大且繁琐,为提高设计效率,进行了多避雷针快速设计算法的研究。首先根据折线法严格推导避雷针高度计算公式;然后对三针高度设计选取方法;接着将多针分为:封闭多边形、敞开式、敞开与封闭结合三种情况分别进行算法设计,在封闭多边形的高度设计中提出"最小宽度算法",实现多针高度快速设计。依算法快速设计出的结果可直接使用。最后以某330 kV变电站330 kV屋外配电装置直击雷防护为例,运用"最小宽度算法"设计计算,结果与典型设计方案比较,设计高度更加合理,并绘图验证了算法的安全可靠,实现了多针高度快速设计。

In the design of the height of multi lightning rods, it needs to try to get height and check by drawing, which is heavy workload and complicated. To improve the efficiency of design, the author has carried on the research of quick design algorithm for height of multi lightning rods. Firstly according to the polygon method the calculation formula of lightning rod height is deduced strictly. Secondly, the selection method of three lightning rods is designed. Thirdly, the multi lightning rods are divided into three conditions： closed polygons, opening, ponging joint closed. Then the algorithm is designed respectively, ＂the minimal width algorithm＂ in the closed polygons to solve rapid design the height of multi lightning rods is put forward. The quick design results according to the algorithm can be used directly, without having to try to get height and drawing check. Finally, taking an outdoor switchgear in a 330 kV substation as an example, using ＂the minimal width algorithm＂ calculate. Compare the calculation results with the existing typical design scheme, and the results show that the algorithm scheme is more reasonable. Then the security and reliability of the algorithm is proved by drawing. And quick design height of multi lightning rods is realized.