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基于功率调整的直驱风电场次/超同步振荡后抑制策略

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近年来,次/超同步振荡(S/SSO)问题严重影响了电力系统的安全运行.在建立了直驱风电机组与直驱风电场等值阻抗模型的基础上,推导出直驱风电场发生场-网振荡的必要条件,并通过分析机组出力变化对系统导纳模型的影响,提出了一种基于功率调整的振荡事故后振荡恢复策略.通过MATLAB/Simulink仿真,验证了所提策略能在保持直驱风电场出力水平的基础上消除振荡.
Sub/sup-Synchronous Oscillation Suppression Strategy of PMSG Wind Farm Based on Power Adjustment
In recent years,the sub/sup-synchronous oscillation(S/SSO)problem has seriously affected the safe operation of power system.This paper establishes the impedance model of wind farm based on the actual collecting network structure,considering the different unit operating conditions,and obtains the difference analysis of the contributing factors of different wind turbines to the actual oscillation of the grid-connected system.Through the analysis of the impact of the change of the actual wind farm wind turbine operating state on the system admittance model,a power adjustment-based oscillation elimination strategy after the oscillation accident is proposed.The proposed oscillation recovery strategy can eliminate oscillations while maintaining the output level of the direct drive wind farm is validated in the simulation of MATLAB/Simulink.

PMSG wind farmsub/sup-synchronous oscillationfrequency couplingsimpedance modelsoscillation elimination

瞿晟珉、黄玲玲

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教育部海上风电技术工程研究中心(上海电力大学),上海 200090

直驱风电场 次/超同步振荡 频率耦合 阻抗模型 振荡后抑制

国网科技项目

4000-201999350A-0-0-00

2024

上海电力大学学报
上海电力学院

上海电力大学学报

影响因子:0.401
ISSN:2096-8299
年,卷(期):2024.40(1)
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