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Evaluating capacitor-switching devices for preventing nuisance tripping of adjustable-speed drives due to voltage magnification

机译:评估电容器开关设备,以防止由于电压放大而导致调速驱动器误跳闸

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摘要

Nuisance overvoltage tripping of pulse-width modulated adjustable-speed drives, due to switching of shunt capacitor banks at a utility's substation and the subsequent voltage magnification which can occur at an industrial customer's utilization-voltage bus, is discussed. Adjustable-speed drive design considerations affecting transient overvoltage ride-through capability are identified and discussed. A comparative evaluation of three switching devices equipped with transient overvoltage control, namely, circuit breakers with pre-insertion resistors, circuit switchers with highly damped pre-insertion inductors, and controlled closing devices, is presented.
机译:讨论了由于在公用事业变电站中并联电容器组的切换以及随后在工业客户的利用电压总线上可能发生的电压放大而引起的脉宽调制可调速驱动器的讨厌的过电压跳闸。确定并讨论了影响瞬态过电压穿越能力的调速驱动器设计注意事项。提出了三种具有瞬态过电压控制功能的开关设备的比较评估结果,即带有预插入电阻的断路器,具有高阻尼预插入电感的电路开关和受控闭合设备。

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