架空地线电磁脉冲除冰装置参数优化

Parameter optimization of overhead ground wire electromagnetic pulse de-icing device

输电线路覆冰严重影响电网的安全运行。2008年南方大面积冰灾之后,我国针对输电线路除冰开展广泛研究。由于地线电气参数和接地性质,无法对其实施短路融冰,因此地线除冰是输电线路覆冰中的一个难题。针对架空地线覆冰问题,该文设计并研制电磁脉冲除冰装置和电磁脉冲力冲量测量装置,绕制同心单层饼式结构线圈,分析各种参数变化对脉冲效应的影响,并计算除冰装置的能耗。研究结果表明:在合理的脉冲线圈匝数下,可以通过增加除冰目标物的厚度、提高脉冲电容器组电压、减小除冰目标物与脉冲线圈之间的间隙等方法,使电磁脉冲力冲量增加;随着电磁脉冲效应的增强,能够有效去除目标物的覆冰从而降低功耗。

Icing on transmission lines seriously affects the safe operation of power grid.After the massive ice disaster in South China in 2008,a lot of research was carried out in China.Due to the electrical parameters and grounding properties of ground wire,short-circuit ice melting cannot be carried out on it.Therefore,ground wire de-icing is a difficult problem in transmission line icing.Aiming at the icing problem of overhead ground wire,this paper designs and develops the electromagnetic pulse de-icing device and the electromagnetic pulse impulse measuring device,winds the concentric single-layer cake structure coil,analyzes the influence of various parameters on the pulse effect,and calculates the energy consumption of the deicing device.The research results show that:Under a reasonable number of pulse coils,the electromagnetic pulse force can be increased by increasing the thickness of the de-icing target,increasing the voltage of the pulse capacitor bank,and reducing the gap between the de-icing target and the pulse coil.With the enhancement of the electromagnetic pulse effect,the icing of the target can be effectively removed,so as to reduce the power consumption.