| 引用本文: | 孙伟伟,付 蓉,陈永华.计及无功裕度的双馈风电场无功电压协调控制[J].电力自动化设备,2014,34(10): |
| SUN Weiwei,FU Rong,CHEN Yonghua.Coordinated var and voltage control of doubly-fed wind farm considering reactive power margin[J].Electric Power Automation Equipment,2014,34(10): |
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| 摘要: |
| 针对双馈风电场的无功补偿能力和电压稳定问题，提出考虑双馈风电场无功裕度的无功电压控制方案。该方案以双馈风电机组为主要补偿设备，以静止无功补偿器作为辅助无功补偿设备，并引入风电场风功率预测，优化计算未来一个时段内的无功补偿优化参考值。在MATLAB／Simulink中建立双馈风电场模型，连接无穷大电网，采用粒子群优化算法优化出风电场无功补偿参考值。仿真结果表明，风电机组按照该无功优化参考值进行无功输出，可留有更大的无功裕度，增强了风电场无功调节能力，并且满足电压要求，提高了风电场的电压稳定性，同时双馈发电机组无需连续无功调节。 |
| 关键词: 风电场 无功裕度 补偿 电压控制 粒子群优化算法 协调控制 预测 优化 |
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| Coordinated var and voltage control of doubly-fed wind farm considering reactive power margin |
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SUN Weiwei1,2, FU Rong1, CHEN Yonghua2
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1.College of Automation，Nanjing University of Posts and Telecommunications，Nanjing 210046，China;2.State Grid Electric Power Research Institute／Nanjing Nari Group Corporation，Nanjing 210003，China
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| Abstract: |
| Aiming at the reactive power compensation ability and voltage stability of doubly-fed wind farm，a scheme of coordinated var and voltage control considering the reactive power margin is proposed，which takes the doubly-fed wind turbine as the main compensation device and the static var compensator as the auxiliary one. The wind power forecast is used to calculate the optimal var compensation reference of the following short period. A model of doubly-fed wind farm connected to an infinite system is built with MATLAB／Simulink and the optimal var compensation reference is calculated with the particle swarm optimization algorithm. The simulative result shows that，the wind farm outputting the reactive power according to the optimal reference may maintain a larger reactive power margin，improve the reactive power regulation ability，satisfy the voltage requirement，enhance the voltage stability and avoid the continuous reactive power regulation. |
| Key words: wind farms reactive power margin compensation voltage control particle swarm optimization algorithm coordinated control forecasting optimization |
