Robust Output Feedback Control Design for Inertia Emulation by Wind Turbine Generators
Robust Output Feedback Control Design for Inertia Emulation by Wind Turbine Generators
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DOI：
10.1109/tpwrs.2021.3070276
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发表时间：
2021-11
影响因子：
6.6
通讯作者：
S. Morovati;Yichen Zhang;S. Djouadi;K. Tomsovic;Andrew Wintenberg;M. Olama
中科院分区：
文献类型：
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作者：
S. Morovati;Yichen Zhang;S. Djouadi;K. Tomsovic;Andrew Wintenberg;M. Olama
风力发电作为一种可再生能源得到了广泛的应用。大多数风力涡轮机和其他可再生能源通过变流器连接到电网，导致对电网频率变化的自然惯性响应降低。双馈感应发电机(DFIG)可以被控制来补偿这种减少，事实上，提供比传统同步电机更快的响应。本文提出设计基于观测器的输出反馈线性二次型调节器(LQR)和H_(Inty)控制律，以实现惯性仿真功能和快速频率支持。其目的是通过柴油同步发电机(DSG)跟踪参考速度，以达到期望的惯性。控制信号是基于降阶模型使用平衡截断技术计算的。与选择模态分析(SMA)和平衡截断模型降阶技术进行了比较。综合结果表明，通过对一个非线性三相柴油机-风力系统实施控制律，可以有效地仿真合成惯量。针对不同的短路比(SCR)情况，对所提出的方法进行了分析。
Wind generation has gained widespread use as a renewable energy source. Most wind turbines and other renewables connected to the grid through converters result in a reduction in the natural inertial response to grid frequency changes. The doubly-fed induction generator (DFIG) can be controlled to compensate for this reduction and, in fact, provide faster response than traditional synchronous machines. This paper proposes to design observer based output feedback linear quadratic regulator (LQR) and $H_{\infty }$ control laws to realize the inertia emulation function and deliver fast frequency support. The aim is to track the reference speed by a diesel synchronous generator (DSG) in order to reach the desired inertia. The control signal is computed based on a reduced order model using the balanced truncation technique. A comparison with selective modal analysis (SMA) and balanced truncation model reduction techniques is presented. Comprehensive results show the effective emulation of synthetic inertia by implementing the control laws on a nonlinear three-phase diesel-wind system. The proposed technique is analyzed for different short circuit ratio (SCR) scenarios.