Under-frequency Load Shedding Strategy for Power System Based on Analytical Frequency Response Model of Doubly-fed Wind Turbines

被引：0
|
作者：
Jiang C. [1 ]
Cai G. [1 ]
Yang D. [1 ]
Liu C. [1 ]
Sun Z. [1 ]
Liu X. [1 ]
机构：
[1] Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University), Jilin
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2023年 / 47卷 / 21期
关键词：
doubly-fed wind turbine; frequency regulation; inertia control; under-frequency load shedding (UFLS);
D O I：
10.7500/AEPS20230316007
中图分类号：
学科分类号：
摘要：
The active participation of large-scale doubly-fed wind turbines in the frequency response of the system makes a significant impact on its dynamic and steady-state characteristics. However, current studies on the under-frequency load shedding (UFLS) strategies do not have a clear understanding and full consideration of the impact. Therefore, an UFLS strategy and a load shedding decision-making model for the power system considering doubly-fed wind turbines participating in frequency regulation are proposed. Firstly, Based on the vector control method oriented towards stator flux, a linearized analytical model for the comprehensive inertia control of doubly-fed wind turbines is derived. Furthermore, the impact of comprehensive inertia control of doubly-fed wind turbines on the load shedding amount of UFLS is analyzed and elaborated, which quantitatively characterizes the partial power shortfall offset by the participation of doubly-fed wind turbines in frequency regulation, thereby the load shedding decision quantity of UFLS is determined. Finally, through numerical cases, it has been proven that the proposed linearized analytical model can accurately characterize the frequency response characteristics of doubly-fed wind turbines, and the improved UFLS strategy can reduce load shedding amount while ensuring frequency safety, fully verifying the steady-state power support value of doubly-fed wind turbines participating in frequency response. © 2023 Automation of Electric Power Systems Press. All rights reserved.
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页码：108 / 118
页数：10
相关论文
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