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电网技术  2012 

次同步谐振复杂系统同型机等值

, PP. 147-152

Keywords: 动态电力系统,同型机组,次同步谐振

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Abstract:

提出了遭受均衡扰动是同型机组的等值条件,基于均衡扰动同型机状态变量相关性发展了一种适合2组以上同型机系统等值的新方法。原同型机系统与等值后同型机系统的特征结构分析结果表明,遭受均衡扰动的同型机系统的模式可以分为冗余模式和公共模式,冗余模式相互抵消,对系统的动态过程不起作用,只有公共模式对系统动态过程起作用。文中给出的均衡扰动同型机等值方法保留了所有公共模式,消去了全部冗余模式。以我国的一个2组同型机的次同步谐振实际复杂系统为例,验证了所提理论和方法的正确性。

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