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arXiv 1503.07914math.OC
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电力系统参数稳定性分析的代数度量

An algebraic metric for parametric stability analysis of power systems

Lewis Roberts, Alan Champneys, Keith Bell, Mario di Bernardo

摘要:

从电力系统稳定性的直接法中导出了临界切除时间(CCT)指标的解析近似。该公式的设计旨在纳入尽可能多的暂态稳定分析特征,例如不同的故障位置和不同的故障后网络状态。该度量的目的是分析电力系统在系统参数变化下的稳定性(CCT)趋势。我们证明了这种度量的性能,以衡量聚合电力网络的稳定性趋势,所谓的两个机器的无限总线网络,通过改变负载参数的全总线导纳矩阵,使用数值连续。我们的度量相比,其他两个表达式的CCT,其中包括额外的非线性模型中存在的。

英文摘要:

An analytic approximation for the critical clearing time (CCT) metric is derived from direct methods for power system stability. The formula has been designed to incorporate as many features of transient stability analysis as possible such as different fault locations and different post-fault network states. The purpose of this metric is to analyse trends in stability (in terms of CCT) of power systems under the variation of a system parameter. We demonstrate the performance of this metric to measure stability trends on an aggregated power network, the so-called two machine infinite bus network, by varying load parameters in the full bus admittance matrix using numerical continuation. Our metric is compared to two other expressions for the CCT which incorporate additional non-linearities present in the model.

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