不等高避雷针最小保护宽度计算方法研究

Research on calculation method of minimum protection width of unequal height lightning rod

为预留合适的保护裕度,提高不等高避雷针布阵效果,最大程度避免雷电灾害,研究了不等高避雷针最小保护宽度计算方法。建立不等高避雷针空间坐标系,分析被保护建筑的中心坐标和避雷针顶点坐标,在多粒子群协同下,利用滚球法计算避雷针保护半径,获取滚球下表面数据最低点;求解最佳位置与目标保护能力即期望值的误差,利用粒子群算法获取不等高避雷针最佳布阵优化结果,计算不等高避雷针最小保护宽度。实验结果表明:避雷针越短保护水平越高,可判断被保护物体特质,便于预留合适的保护裕度,减少保护失败现象。

In order to reserve appropriate protection margin,improve the array effect of unequal lightning rods and avoid lightning disaster to the greatest extent,the calculation method of minimum protection width of unequal lightning rods is studied.It establishes the spatial coordinate system of unequal height lightning rod,analyzes the center coordinate of the protected building and the vertex coordinate of lightning rod,and calculates the protection radius of lightning rod by using the rolling ball method with the cooperation of multi-particle swarm,so as to obtain the lowest point of the data of the lower surface of the rolling ball;The error between the best position and the target protection ability,that is,the expected value,is solved.The particle swarm optimization algorithm is used to obtain the optimal array of unequal lightning rods,and the minimum protection width of unequal lightning rods is calculated.The experimental results show that the shorter the lightning rod,the higher the protection level,which can judge the characteristics of the protected object,facilitate the reservation of appropriate protection margin and reduce the phenomenon of protection failure.