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| 摘要: |
| 供电系统发生暂时性故障，引起感应电动机短时跳闸是常见现象。电源电压变化时，异步电动机主磁通随之变化．与之相应的激磁电感参数将是一个变数。因此，在研究电源电压瞬时骤降引起的异步电动机瞬变过程时．应采取考虑主磁路饱和的较精确的异步电动机动态数学模型。为此，建立了考虑主磁路饱和情况的三相异步电动机在d，q静止坐标系下的动态数学模型，通过实例对瞬时电压骤降引起的三相异步电动机瞬间断电又重新合闸的瞬态运行过程进行了计算机仿真，并对仿真结果进行分析．为自动重合闸装置的设计人员提供了有价值的参考依据。 |
| 关键词: 异步电动机 电源电压骤降 重合闸瞬态 |
| DOI： |
| 分类号:TM346 |
| 基金项目: |
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| Transient analysis on reclosing of three-phase asynchronous motor |
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DENG Jian-guo
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| Abstract: |
| Momentary power trip of induction motor is often caused by the temporal fault of power supply system.The main flux of asynchronous motor varies with the power voltage and the para-meter of excited inductance becomes a variable.Therefore,a precise dynamic mathematical model of asynchronous motor,considering of main flux saturation,should be applied in the transient analysis of asynchronous motor due to the momentary voltage dip.A dynamic mathematical model of three-phase asynchronous motor considering the main flux saturation in(d,q)static coordinates system is thus established.An example is given for the computer simulation of the reclosing transient after the momentary power trip of3-phase asynchronous motor caused by the voltage dip and the simu-lation results are analyzed,which may be used as a reference for recloser designers. |
| Key words: asynchronous motor,momentary voltage dip,reclosing transient |
