高压电器中绝缘拉杆的瞬态动力学分析

Transient Dynamic Analysis Of The Insulation Puilrodin The High-Voltage Electrical Apparatus

广泛应用于高压电器中的绝缘拉杆起着高电压与地之间绝缘和操作力传递的双重作用。本文在建立绝缘拉杆动态分析数学模型的基础上采用瞬态动力学有限元分析方法对拉杆运动方程进行求解,计算了罐式六氟化硫断路器分闸过程中受冲击作用的绝缘拉杆在主动力,压气缸反力,缓冲力同时作用下的动态应力,得出了杆件运动过程中的应力分布和应力集中区域,总结了应力、位移变化规律以及应力变化周期与杆件长度之间的关系。

In this paper, the numerical model for analyzing the dynamic behavior of the insulation pullrod which widely used in the high-voltage electrical apparatus is first established, and the insulation pullrod dynamic stress during the contacts opening process in the high-voltage circuit-breaker is then calculated by using the transient dynamic analyzing method, the stress distribution in the pullrod and stress concentrating area are presented, the curve reflecting relationship between the stress changing period and the pullrod length draw, and the displacement changing and deformation regulation generalized as well.