【摘要】 灵活交流输电系统技术是近年来出现的一项新技术。本文回顾了该技术产生的背景；介绍了可控硅控制的串联补偿，可控硅控制的移相器以及统一潮流控制器的基本结构及原理；分析了这项新技术在电力系统潮流控制，抑制系统低频振荡，次同步谐振以及提高电力系统暂态稳定性等方面的作用。更多还原

【Abstract】 Flexible AC Transmission System(FACTS)is a new technology occurred in recent years,ThisPaPer reviews the background of the technology,describes the basic structures and principles of thyristor con-trolled series compensator,thyristor controlled phase-shifter and unified power-flow controller,and anal-yses the applications of the new technology in controlling power flow,damping low-frequence cocillation,suppressing subsynchronous resonance and enhancing transient stability of power systems.更多还原