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基于参考机的单机等面积暂态稳定分析
引用本文:吴政球,周野,匡文凯,刘堂伟. 基于参考机的单机等面积暂态稳定分析[J]. 湖南大学学报(自然科学版), 2011, 38(6): 49-54
作者姓名:吴政球  周野  匡文凯  刘堂伟
作者单位:湖南大学电气与信息工程学院,湖南长沙,410082
基金项目:湖南省科技厅重大专项资助项目
摘    要:提出了相对参考机的单机稳定裕度评估方法.研究了单一机组功角曲线的表达方式,将多机系统中单机功角曲线表达为本机相对参考机转子角度的函数,提出了基于泰勒级数的功角曲线预测拟合方法.提出了稳定裕度的预测评估方法与事后评估方法,比较了事后评估与预测评估所得稳定裕度的差异.SGEAC方法在判别系统是否稳定时没有任何假设,不需要进...

关 键 词:暂态分析  裕度预测  功角曲线拟合  单机等面积判据  泰勒级数

A Fast Quantitative Transient Stability Margin Determination Method Based on SGEAC
WU Zheng-qiu,ZHOU Ye,KUAN Wen-kai,LIU Tan-wei. A Fast Quantitative Transient Stability Margin Determination Method Based on SGEAC[J]. Journal of Hunan University(Naturnal Science), 2011, 38(6): 49-54
Authors:WU Zheng-qiu  ZHOU Ye  KUAN Wen-kai  LIU Tan-wei
Abstract:Based on single machine equal area criterion, the stability margin based on single study generator and reference generator was defined.The power angle curve expression for single study machine was analyzed.Based on the Taylor series, the power angle curve of single study generator can be expressed as the function of the rotor angle of the study generator with respect to the reference machine angle, which is fitted by using polynomial function.The stability margins obtained by both prediction method and post event method were compared.Single Generator Equal Area Criterion(SGEAC) based stability margin is the real evaluation of the global stability margin, and it does not need the identification of the two group mode.Lots of example analysis verified the proposed method.
Keywords:transient analysis   margin prediction  power angle curve prediction   single machine stability margin   Taylor series
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