摘要
交流串补输电技术和直流输电技术,在提高电力系统的暂态稳定、增加线路送出功率、加强互联电网稳定性的同时也为发电机组的轴系带来了发生扭振的安全隐患问题。由于上述技术中使用了电容元件和大量的晶闸管元件,在一定条件下造成"LC"谐振和HVDC控制系统激发扭振,对发电机组轴系安全带来威胁。文章分析了机组轴系扭振产生的原因,介绍了交、直流系统次同步谐振/振荡问题的分析方法和应对措施,以及在具体工程中采用注意的问题。
Although AC TCSC (thyristor controlled series capacitor and DC transmission technology improve transient state stability and sending power of circuits,as well as strengthen interconnected grid stability,they bring potential trouble like torsional vibration to shafting of generating sets.This article analyzed the causes for the above mentioned trouble,introduced analysis methods and countermeasures of AC-DC system synchronous resonance or oscillation,and problems might face in practice.
出处
《神华科技》
2010年第1期30-33,共4页
Shenhua Science and Technology
