摘要
从一起火电厂因变频器电压暂降导致高压辅机跳闸而引起的机组RB动作的事故入手,详细阐述了高压变频器的低电压穿越对火电厂安全运行的重要性以及其具体实现方式。对于高压变频器,通过改变矢量控制方式实现变频器在电压暂降期间能够不跳闸,实现高压变频器的安全运行;对于低压变频器则采用外加电源或补偿装置来保证低电压穿越的实现。为火电厂实现高低压变频器的低电压穿越提供了实现方法。
Starting from a generation RB accident caused by voltage dip of frequency converters. Elaborating the importance and implementation of high voltage frequency converter＇s low voltage ride through （LVRT）. For a high voltage frequency converter, it＇s save function is realized by changing vector control mode to make sure it not driping when voltage temporary dip. For a low voltage frequency converter, LVRT is realized by adding power supply or compensators. Providing a realizing method for LVRT in power plants.
出处
《能源研究与管理》
2014年第4期99-100,110,共3页
Energy Research and Management
关键词
节能
变频设备
低电压穿越
energy saving
frequency-conversion devices
LVRT
