摘要
研究了由区域电网间互联形成的互联电网动态稳定性的特点、低频振荡产生的原因,提出了互联系统动态稳定性的控制策略,并提出以下结论:励磁系统中自动电压调节器的负阻尼作用仍然是互联电网发生低频振荡的主要原因;PSS已被证明是阻尼低频振荡的最有效、经济的装置,对本地振荡模式和区域间振荡模式均有很好的效果;直流调制、可控串补及可控静补对改善系统阻尼可有重要作用,今后应对这些领域进行更多的研究。
This paper is focused on the new issues of low frequency oscillation brought about by area grid interconnecfion. The characteristics of inter-area oscillation mode are discussed, Strategies on improving the dynamic stability of interconnected grids are summarized. The negative damping effect caused by automatic voltage regulator （AVR） in the Excitation System is still the main cause for low frequency oscillation in interconnected power system. PSS has been proved to be the most economical and effective equipment for damping low frequency oscillation, which can perform well to both the local mode and the inter-area one. HVDC modulation, thyristor controlled series capacitor（TCSC） and controllable SVC may contribute a lot to improve power system damping. Therefore, more researches are needed in these fields.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2007年第1期1-7,共7页
Proceedings of the CSEE
关键词
互联电网
动态稳定性
区域间振荡模式
本地模式
低频振荡
电力系统稳定器
直流调制
可控串补
interconnected grid
dynamic stability
inter-area oscillation mode
local mode
low frequency oscillation
PSS
HVDC modulation
thyristor controlled series capacitor
