真空断路器启动精炼电机时出现多次重击现象

Conference Record of 1998 Annual Pulp and Paper Industry Technical Conference (Cat. No.98CH36219) Pub Date : 1998-06-21 DOI:10.1109/PAPCON.1998.685530

J.P. Eichenberg, H. Hennenfent, L. Liljestrand

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引用次数: 17

摘要

15kv级真空断路器已成为大型切屑精炼同步电机最常用的启动方式。真空断路器可能发生多次重击，并可能在电机端子处造成瞬态过电压。这种情况会损坏电机定子绕组。介绍了真空断路器的多次重击现象及其测量方法。它还讨论了Avenor在加拿大不列颠哥伦比亚省金河和安大略省桑德湾的纸浆和造纸厂以及加拿大安大略省索罗尔德的QUNO造纸厂的经验。包括修改建议，以保护炼油厂电机进一步损坏。

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Multiple re-strikes phenomenon when using vacuum circuit breakers to start refiner motors

15 kV class vacuum circuit breakers have become the most popular method of starting large chip refiner synchronous motors. Multiple re-strikes, can occur in vacuum circuit breakers and may cause transient overvoltages at the motor terminals. This condition damages motor stator windings. The paper describes multiple re-strikes in vacuum circuit breakers and how they are measured. It also discusses the experience at Avenor's Canadian pulp and paper mills in Gold River, British Columbia and Thunder Bay, Ontario and at the QUNO mill, Thorold, Ontario, Canada. Included are modifications recommended to protect the refiner motors from further damage.

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Conference Record of 1998 Annual Pulp and Paper Industry Technical Conference (Cat. No.98CH36219)

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