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Analysis of factors affecting power system normal form results

机译:影响电力系统正态结果的因素分析

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This paper discusses the experience in the use of normal form (NF) theory to study nonlinear modal behavior in stressed power systems. Making use of NF theory, we examine the use of several analytical indices to quantify system nonlinear modal interaction and discuss major factors affecting NF results and interpretation. Specifically, the influence of the initial conditions and the effect of strong modal resonance on the normal form analysis is studied. Based on this understanding, heuristic criteria for guessing initial conditions area devised for assessing model adequacy. New insights into the nature of system oscillations are offered and criteria for characterizing nonlinear effects are discussed. The analysis of factors affecting NF results is illustrated on a four-machine two-area test power network. Numerical calculations are presented and discussed to check the accuracy of the method analysis.
机译:本文讨论了使用范式(NF)理论研究应力电力系统中非线性模态行为的经验。利用NF理论,我们研究了使用几种分析指标来量化系统非线性模态相互作用,并讨论了影响NF结果和解释的主要因素。具体来说,研究了初始条件的影响以及强模态共振对正态分析的影响。基于这种理解,设计了用于猜测初始条件的启发式标准,以评估模型的适当性。提供了对系统振荡性质的新见解,并讨论了表征非线性效应的标准。在四台机器的两区域测试电源网络上说明了影响NF结果的因素分析。提出并讨论了数值计算,以检查方法分析的准确性。

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