架空线路感应雷过电压产生机理与计算方法

架空配电线路裸露在空气中,极易遭受雷击产生雷电过电压,导致线路保护装置跳闸甚至线路电气设备元件的损坏,从而造成供电中断,影响了广大用户的生产和生活。对配电网架空线路感应雷过电压产生机理进行了详细的探讨,提出静电感应分量是配电网线路感应雷过电压的主要构成部分。并研究了目前常见的计算雷击导线附近大地时架空线路感应雷过电压的HC/idalen模型,并通过仿真分析表明大地电导率对架空线路感应雷过电压有一定的影响。

Generation Mechanism and Calculation Methods of Overhead Lines Lightning Over-Voltage

Overhead distribution lines exposed to the air, vulnerable to the lightning lightning over-voltage line protec- tion device tripping even damage to the line electrical equipment components, resulting in a power interruption, the ira- pact of the production and living of the majority of users. This article distribution network overhead line lightning over voltage generation mechanism were discussed in detail, proposed electrostatic induction component with the main compo- nents of electric power lines and lightning over-voltage. And is common in the vicinity of the lightning conductor earth when the overhead line lightning over-voltage the H？ idalen model, and simulation results show that the ground conduc- tivity lightning over-voltage overhead lines have a certain impact.