【论文推荐】华北电力大学徐衍会等：基于转子等值电阻特性的风电场次同步频域等值建模

摘要

大型风电场的等值简化对于评估电力系统的安全性至关重要。然而，次同步振荡会严重影响此类电力系统的稳定性。虽然详细的风电场数学模型有助于准确分析振荡机理，但是求解过程复杂可能会导致诸如“维度灾难”之类的问题。因此，本文提出了一种基于转子等效电阻性质的次同步频域风电场等值建模方法，以准确分析次同步振荡问题。最后，使用Matlab/Simulink对风电场单机倍乘模型、详细模型和等值模型的精度进行了仿真对比，证明本文提出的等值模型的有效性。

Sub-synchronous frequency domain-equivalent modeling for wind farms based on rotor equivalent resistance characteristics

基于转子等值电阻特性的风电场次同步频域等值建模

Yanhui XU¹, Tianchu GAO¹

(1.North China Electric Power University, Beijing, China)

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A wind farm sub-synchronous frequency domain equivalent mod

Abstract

The equivalent simplification of large wind farms is essential for evaluating the safety of power systems. However, sub-synchronous oscillations can significantly affect the stability of such power systems. Although detailed mathematical models of the wind farms can help accurately analyze the oscillation mechanisms, the solution process is complicated and may lead to problems such as the "dimensional disaster." Therefore, this paper proposes a sub-synchronous frequency domain-equivalent modeling method for wind farms based on the nature of the equivalent resistance of the rotor, in order to analyze sub-synchronous oscillations. To this end, Matlab/Simulink is used to simulate a detailed model, a single-unit model, and an equivalent model, considering a wind farm as an example. A simulation analysis is then performed under the sub-synchronous frequency to prove that the model is effective and that the wind farm equivalence model is valid.

Keywords

wind farm, sub-synchronous frequency domain, dynamic equivalence, rotor equivalent resistance characteristics

Fig.1 Single double-fed wind turbine output wind power system topology through series compensation

Fig.2 Equivalent circuit diagram of IGE

Fig.3 C_p curves

Fig.4 Block diagram for pitch angle controller

Fig.5 Structural diagram of a wind power system

Fig.6 Simplified equivalence diagram of a wind farm

Fig.7 Comparison of wind farm active power for different models

Fig.8 Comparison of wind farm reactive power for different models

Fig.9 Spectrum analysis diagram

Fig.10 Wind farm active power comparison diagram

Fig.11 Comparison of reactive powers

本文引文信息

Xu YH, Gao TC (2022) Sub-synchronous frequency domain-equivalent modeling for wind farms based on rotor equivalent resistance characteristics. Global Energy Interconnection, 5(3):293-300

徐衍会，高天初 (2022) 基于转子等值电阻特性的风电场次同步频域等值建模. 全球能源互联网（英文）, 5(3):293-300

Biographies

Yanhui Xu

Yanhui Xu received his PhD from North China Electric Power University in 2010, where he is currently working. His research interests include dynamic power system analyses and wind turbine equivalence.

Tianchu Gao

Tianchu Gao is working towards her master’s degree at North China Electric Power University. Her research interests include wind turbine equivalence and grid stability analyses

编辑：王彦博

审核：王伟

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Sub-synchronous frequency domain-equivalent modeling for wind farms based on rotor equivalent resistance characteristics

【论文推荐】华北电力大学 徐衍会等：基于转子等值电阻特性的风电场次同步频域等值建模

郑重声明

【论文推荐】华北电力大学徐衍会等：基于转子等值电阻特性的风电场次同步频域等值建模