Assessment of Frequency Support from Wind Turbines under Alternative Control Schemes
Assessment of Frequency Support from Wind Turbines under Alternative Control Schemes
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DOI：
10.1109/isgteurope.2019.8905511
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发表时间：
2019-09
期刊：
影响因子：
--
通讯作者：
Zhongda Chu;Fei Teng
中科院分区：
文献类型：
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作者：
Zhongda Chu;Fei Teng
随着风力发电在电网中的渗透率不断提高，对系统的运行和稳定性提出了挑战，突出了风力涡轮机（WT）频率支持的重要性。在这种情况下，本文提出了一种新的控制框架，从风力发电机在电力系统中的频率支持。与频率支持传递相关联的WT的恢复效应被明确地包括在系统频率动态中，使得可以消除次级频率下降。各种控制方案（恒定功率，惯性响应和下垂响应）的有效性进行了分析和比较，以取代主频率响应（PFR），同时保持系统的频率最低点以上的限制。通过Matlab/Simulink仿真验证了所提出的控制设计。特别是在风力发电渗透率高的系统中，可以观察到PFR要求的显着降低。
The increasing penetration of wind generation in power grid introduces challenges for the system operation and stability, highlighting the importance of the frequency support from wind turbines (WTs). In this context, this paper proposes a novel control framework for the frequency support from WTs in power systems. The recovery effect of WTs associated with the frequency support delivering is explicitly included in the system frequency dynamics such that the secondary frequency dip can be eliminated. Various control schemes (constant power, inertia response and droop response) are analyzed and compared in terms of the effectiveness to replace primary frequency response(PFR) while maintaining the system frequency nadir above the limit. The proposed control design is verified through Matlab/Simulink simulations. A significant reduction of PFR requirement is observed especially in a system with high penetration of wind generation.