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基于投影寻踪最佳方向的同调机群识别方法

DOI: 10.13334/j.0258-8013.pcsee.2015.02.013, PP. 359-367

Keywords: 广域量测信息,同调辨识,投影寻踪方法,遗传算法

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Abstract:

提出一种基于投影寻踪最佳投影方向的电力系统机群同调识别新方法。引入投影寻踪方法对广域量测时间序列建模,将其投影到低维子空间中,通过优化算法寻找并提取反映机组同调特征的关键投影方向向量,用于判断机组的同调性。所提方法计算简单,易于实现,基于实测数据进行分群,可避免模型参数对分群的影响,实现同调机群在线辨识。研究结果表明,电力系统在振荡过程的同调机群构成与系统功率振荡模式间存在对应关系,通过对典型两区域互联交直流系统和南方电网的仿真分析,验证了所提方法的有效性和可行性。

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