Locked-rotor of Asynchronous Motor and Its Adaptive Protection

Zhang Su  Wang Liping

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Locked-rotor of Asynchronous Motor and Its Adaptive Protection

更新时间：2025-11-18

- Locked-rotor of Asynchronous Motor and Its Adaptive Protection
- Issue 3, Pages: 16-17(2002)
- 作者机构：
  
  1.   四川大学电气信息学院
  2.   成都电业局四川成都610065
  3.   四川成都610016
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM343
- Published：2002
- 稿件说明：
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[1]张肃,王利平.异步电动机的堵转及其自适应保护[J].四川电力技术,2002(03):16-17.

Zhang Su Wang Liping. Locked-rotor of Asynchronous Motor and Its Adaptive Protection[J]. 2002, (3): 16-17.
[1]张肃,王利平.异步电动机的堵转及其自适应保护[J].四川电力技术,2002(03):16-17. DOI：

Zhang Su Wang Liping. Locked-rotor of Asynchronous Motor and Its Adaptive Protection[J]. 2002, (3): 16-17. DOI：

摘要

由于机械故障、负荷过大、电压过低等原因

转子不能正常起动

始终处于静止状态或电动机运行在转速很低的状态下

而达不到设计的额定转速

称之为堵转状态

利用无功电流与有功电流之比实现堵转保护的方法

能对起动过程和正常运行过程中发生的堵转实现快速保护

解决了常规保护不能保护堵转时间小于起动时间的难题。

Abstract

Rotor of asynchronism motor is still in respect that mechanical failure?overload?low voltage or run at low rotate speed

it is called block-up. To solve the problem that routine protection can not run when block-up time is less than startup time

we can use K LR （the ratio of nonework current compare with work current） to realize quick protection of block-up.

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