Considerations Toward Coordinated Control of DFIG-Based Wind Farms
Considerations Toward Coordinated Control of DFIG-Based Wind Farms
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DOI：
10.1109/pesgm.2014.6939885
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发表时间：
2013-06
影响因子：
4.4
通讯作者：
B. Chaudhuri;N. Chaudhuri
中科院分区：
文献类型：
--
作者：
B. Chaudhuri;N. Chaudhuri
本文重点介绍了双馈感应发电机（DFIG）为基础的风电场协调控制的功率振荡阻尼的重要考虑。分析了用双馈发电机（DFIG）取代原有同步发电机并加装电力系统稳定器（PSS）后对系统局部模态和临界区域间模态振型的影响。从DFIG机械侧几乎为零的参与和非常小的可观测性的低频振荡模式的信号本地可用在风电场，适当的远程反馈信号的选择进行了讨论。比较了双馈风力发电机转子电流分量的相对稳定性，以确定最有效的控制结构。一个协调控制设计方法，旨在阻尼多个振荡模式，通过一个以上的DFIG为基础的风电场。启发式优化用于设计问题，否则很难解决使用分析方法。模态分析和非线性仿真结果证实了研究结果。
This paper highlights the important considerations toward coordinated control of doubly fed induction generator (DFIG)-based wind farms for power oscillation damping. The effect of replacing one existing synchronous generator with a power system stabilizer (PSS) by a DFIG on the local mode and the mode shapes of the critical interarea modes are analyzed. With almost zero participation from the DFIG mechanical side and very little observability of low-frequency oscillatory modes in signals locally available at the wind farms, the choice of appropriate remote feedback signals is discussed. Relative controllabilities of the DFIG rotor current components are compared to determine the most effective control structure. A coordinated control design approach aimed at damping multiple oscillatory modes through more than one DFIG-based wind farm is demonstrated. Heuristic optimization is used for the design problem which is otherwise difficult to solve using an analytical approach. Modal analysis and nonlinear simulation results are presented to substantiate the findings.