异步电动机残余电压及其对电力恢复影响的研究

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Pub Date : 2008-04-06 DOI:10.1109/DRPT.2008.4523801

Cui Xue-shen, Yang Yulei, Zhou Zhenhua, Zhao Hai-sen

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引用次数: 5

摘要

异步电动机交流卸压后的残余电压(RVACD)会在异步电动机重合闸或切换到备用电源时产生浪涌电流和浪涌转矩，从而对电动机造成损坏或引起馈线保护误动、电压跌落等电源问题。本文建立了基于空间矢量的电机模型，对RVACD进行了研究，从而深入分析了倾倒后电机的电气质量和磁场的变化规律，推导出了一台电机的剩余电压的解析表达式，得到了异步电机组的解。给出了电源在倾倒后不同时刻恢复所需的浪涌电流和转矩。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The research on residual voltage of asynchronous motors and its impact on power restoration

The residual voltage of asynchronous motors after AC dump(RVACD) could have result in inrush current and inrush torque when asynchronous motors were reclosed or reswitched on the alternate power source, which would have cause damage to motors or bring power source problems such as mal-operation of feeder protection and voltage sag, etc. In this paper we built the space vector based model of motors to research the RVACD so as to thoroughly analyze the varying laws of electrical qualities and magnetic field after dumping, deduce the analytical expression of residual voltage of one motor, and get the solution for the group of asynchronous motors. The inrush current and torque are presented for power source to be restored at different moment after dumping.

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2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies

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