摘要
高压直流输电(High Voltage Direct Current,HVDC)换流器控制不当和固定串联电容补偿均可能引起次同步振荡,严重影响系统的安全稳定运行。灵活交流输电系统(Flexible AC Transmission Systems,FACTS)装置基于大功率电力电子技术,其快速灵活的控制为抑制次同步振荡(Subsynchronous Oscillation,SSO)提供了新的有效手段。首先阐述了次同步振荡的产生机理和抑制措施,然后介绍了几种典型的FACTS装置抑制次同步振荡的机理研究,最后介绍了控制器和辅助控制器的设计方法及控制器输入信号的选取问题。
HVDC and series capacitor compensation in AC transmission lines may result in subsynchronous oscillation （SSO）, which seriously affects system safety and stability. FACTS device is an economical method for mitigating SSO, which only need providing corresponding control strategies. The occurring mechanism and mitigation methods of SSO are introduced. Several typical FACTS devices in the application of SSO mitigation are described. The design methods and the input information of controllers and their auxiliary controllers are presented.
出处
《现代电力》
2008年第4期1-6,共6页
Modern Electric Power
基金
国家自然科学基金资助项目(5059541250577044)
国家科技支撑计划项目(2008BAA13B01)
