Short-Circuit Model for Type-IV Wind Turbine Generators With Decoupled Sequence Control
Short-Circuit Model for Type-IV Wind Turbine Generators With Decoupled Sequence Control
复制标题
解耦顺序控制的 IV 型风力发电机短路模型
DOI：
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发表时间：
2019
影响因子：
4.4
通讯作者：
J. Mahseredjian
中科院分区：
文献类型：
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作者：
T. Kauffmann;U. Karaagac;I. Kocar;S. Jensen;E. Farantatos;A. Haddadi;J. Mahseredjian
由于转换器接口可再生能源渗透水平的快速增加，电力系统规划和保护研究变得更具挑战性。IV型风力涡轮机发电机（WTG）和光伏板通过满量程转换器连接到电网，并且它们的短路电流贡献主要由转换器控制和相关电流限制指定。本文提出了一种新的相量域建模方法的风力发电场（WP）与IV型风力发电机，使用基于控制的等效电路的概念。所提出的模型精确地代表了详细的电磁暂态（EMT）型模型在稳态下，并能够占故障穿越功能的风力发电机控制，以及其特定的解耦顺序控制方案，除了传统的耦合控制方案。虽然WP内的集电器电网和WTG用其聚合模型表示，但通过考虑中央WP控制器来保留WP的整体无功功率控制结构。通过详细的EMT仿真验证了该模型的准确性。
The power system planning and protection studies are becoming more challenging due to the rapid increase in penetration levels of converter-interfaced renewables. Type-IV wind turbine generators (WTGs) and photovoltaic panels are interfaced to the grid through a full-scale converter, and their short-circuit current contributions are mainly designated by the converter control and associated current limits. This paper proposes a new phasor domain modeling approach for the wind parks (WPs) with Type-IV WTGs, using the concept of control-based equivalent circuits. The proposed model precisely represents the detailed electromagnetic transient (EMT)-type model in steady state, and is able to account for the fault-ride-through function of the WTG control as well as its specific decoupled sequence control scheme in addition to the traditional coupled control scheme. Although the collector grid and WTGs inside the WP are represented with their aggregated models, the overall reactive power control structure of the WP is preserved by taking the central WP controller into account. The accuracy of the proposed model is validated through detailed EMT simulations.