同步电动机励磁系统故障分析及改造

Analysis and Reform for Faults of Excitation System for Synchronous Motor

同步电动机具有运行稳定、输出功率大等优点,特别是能向电网发送无功功率,支持电网电压,提高功率因数。但由于同步电动机的频繁损坏,直接影响安全、经济及稳定运行,文章阐述同步电动机频繁损坏的根本原因不在电动机本身,而在于励磁装置技术性能差。针对励磁装置技术性能的缺陷,提出切实可行,行之有效的改造技术措施。

The synchronous motor is with such advantages as stable operation and great output power, especially it could send reactive power to power grid to support grid voltage and improve power factor. Since frequent damages of synchronous motor could directly influence security, economics and stable operation, it is elaborated that their root cause is not the motor itself, but because of poor technical performances of excitation device in the paper. Moreover, the practical and effective technical measures for transformation are put forward.