由电孤启动到正常工作这段时间，电网线路的电流电压波动性较大，往往给电路其它各元件造成强烈的冲击。
From starting-up to stabilization of the arc, the electric current and voltage usually fluctuate acutely, which makes a great impact on other circuit components.
大功率的波动性负荷大量进入电网，引起电压波动，严重影响电气设备运行。
Voltage fluctuation aroused by fluctuating loads impacts on the operation of electric equipment.
另一方面，现代配电网上用于冶炼的电弧炉和铁路牵引机车等波动性负荷，会使电网电压频繁波动，造成电压闪变。
On the other hand, because of the fluctuating load, such as arc furnace and railway traction locomotive, the voltage of the network will frequently fluctuate and lead to voltage flash.
另一方面，现代配电网上用于冶炼的电弧炉和铁路牵引机车等波动性负荷，会使电网电压频繁波动，造成电压闪变。
On the other hand, because of the fluctuating load, such as arc furnace and railway traction locomotive, the voltage of the network will frequently fluctuate and lead to voltage flash.
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