Small-signal analysis of power system swing modes as affected by wind turbine-generators

F. Wilches-Bernal, C. Lackner, J. Chow, J. Sanchez-Gasca
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引用次数: 4

Abstract

The power electronic grid interface of converter-based energy systems such as wind turbine-generators (WTGs) is modifying the dynamics governing power systems. For a fundamental understanding of the impact of power electronic interface on the electromechanical modes, that is, the synchronizing and damping torque on synchronous machines, this paper provides a small-signal analysis about the impact of WTGs on the local mode of a single-machine infinite-bus (SMIB) system. The main contribution is the incorporation of the WTG voltage control into the modal decomposition diagram of Heffron-Phillips and deMello-Concordia. Sensitivity coefficients are developed for the WTG voltage control loop and their impact on the real and imaginary parts of the local mode is illustrated with an example.
风力发电机组对电力系统摆动模式影响的小信号分析
风力发电机组等以变流器为基础的能源系统的电力电子电网接口正在改变电力系统的动力学特性。为了从根本上了解电力电子接口对机电模式的影响,即同步电机上的同步和阻尼扭矩,本文提供了关于wtg对单机无限总线(SMIB)系统本地模式影响的小信号分析。主要贡献是将WTG电压控制纳入Heffron-Phillips和deMello-Concordia的模态分解图中。建立了WTG电压控制回路的灵敏度系数,并举例说明了灵敏度系数对局部模态实部和虚部的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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