摘要
根据单机等面积定则原理SGEAC(single generator equal area cirterion)对基于动态单等值机群的稳定裕度与基于动态二等值机群相对运动的稳定裕度进行了比较研究,发现两者完全一致。利用物理系统多变量函数的高阶导数,得到了单一等值机群与单一机组功角曲线的理论表达方式,由时域仿真与曲线拟合得到单一机群或单一机组的功角曲线,最终得到系统的能量型稳定裕度。实例验证了所提方法的有效性。
Based on single machine equal area criterion,the stability margin based on dynamic single machine group is compared with the stability margin based on the mutual motion of dynamic two groups of machines.The power angle curve expression for both single equivalent machine and single generator is analyzed.Based on the Taylor series,the power angle curve for both single equivalent machine and single generator is fitted by using polynomial function.It is discovered that SGEAC based stability margin is identical with the stability margin based on two group machine motion.Lots of example analysis verified the proposed method.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2010年第4期64-70,共7页
Proceedings of the CSU-EPSA
基金
湖南省科技厅重点项目(2008FJ2003)
关键词
单机等面积
单机稳定裕度
单等值机群
二等值机群
功角曲线拟合
扩展等面积准则
single generator equal area（SGEA）
single generator stability margin
single equivalent generator
two equivalent generator
power angle curve fitting
equal employment advisory council（EEAC）
