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Qualitative analysis of the CCEBC/EEAC method

机译:CCEBC / EEAC方法的定性分析

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The CCEBC/EEAC method is an effective method in the quantitative analysis of power system transient stability. This paper provides a qualitative analysis of the CCEBC/EEAC method and shows that from a geometrical point of view, the CCCOl-RM transformation used in the CCEBC/EEAC method can be regarded as a projection.of the variables of the system model on a weighted vector space, from which a generalized p-bar-Anti mu trajectory is obtained. Since a transient process of power systems can be approximately regarded as a time-piecewise simple Hamiltonian system, in order to qualitatively analyse the CCEBC/EEAC method, this paper compares the potential energy of a two-machine infinite bus system with its CCEBC/EEAC energy. Numerical result indicates their similarity. Clarifying the qualitative relation between these two kinds of energies is significant in verifying mathematically the CCEBC/EEAC method for judging the criterion of power system transient stability. Moreover, the qualitative analysis of the CCEBC/EEAC method enables us to better understand some important phenomena revealed by quantitative analysis, such as multi-swing loss of stability and isolated stable domain.
机译:CCEBC / EEAC方法是定量分析电力系统暂态稳定性的有效方法。本文对CCEBC / EEAC方法进行了定性分析,表明从几何学角度来看,CCEBC / EEAC方法中使用的CCCO1-RM变换可以看作是对系统模型变量的投影。加权向量空间,从中可以获得广义的p-bar-Anti mu轨迹。由于电力系统的暂态过程可以近似地视为按时间分段的简单哈密顿系统,为了定性分析CCEBC / EEAC方法,本文将两机无限母线系统的势能与其CCEBC / EEAC进行了比较。能源。数值结果表明它们的相似性。澄清这两种能量之间的定性关系,对于数学上验证CCEBC / EEAC方法以判断电力系统暂态稳定判据具有重要意义。此外,对CCEBC / EEAC方法的定性分析使我们能够更好地理解定量分析揭示的一些重要现象,例如稳定性的多摆动损失和孤立的稳定域。

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