摘要
励磁系统是提高电力系统运行稳定性,挖掘稳定储备和改善系统动态品质的有力手段。分析了励磁系统在电力系统稳定控制中的调节作用,研究了辨识的原理和线性模式分析法。利用小干扰稳定计算分析程序PSD-SSAP,对重庆电网进行了小干扰稳定计算。通过对重庆电网主力机组进行励磁系统模型及参数的辨识研究,得到可抑制电网低频振荡的准确励磁模型。小干扰稳定计算结果表明:励磁系统的准确辨识,可抑制电网低频振荡,对电网的稳定性具有重要作用。
Excitation system is a powerful tool for improving the power system operation stability,mining reserves and enhancing system stability dynamic quality.The regulation of excitation system in the power system stability control has been analyzed,the principle of identification and linear model analysis method have been studied.Carried on small signal stability calculation of Chongqing Grid via PSD-SSAP.Through the identification of excitation system models and parameters of the main power unit in Chongqing,getting accurate excitation models that suppress low frequency oscillation.Results show that accurate identification of suppression of excitation system will suppress lowfrequency oscillations and play a key role in power system stability.
出处
《电力与能源》
2014年第4期464-467,共4页
Power & Energy
关键词
低频振荡
励磁系统
系统辨识
小干扰
Low frequency oscillation
Excitation System
System Identification
small signal stability
