| 引用本文: | 张安安,郭红鼎,于兵,李楠,李超.一种风电机组在低风速区间的功率控制方法[J].电力系统保护与控制,2015,43(23):84-89.[点击复制] |
| ZHANG Anan,GUO Hongding,YU Bing,LI Nan,LI Chao.A power control method of wind turbines in low wind speed area[J].Power System Protection and Control,2015,43(23):84-89[点击复制] |
|
| 摘要: |
| 由于在低风速区间风速变化较快、风能密度较低，因此对风电机组的功率转换效率造成了较大影响。针对风电机组在低风速区域的运行特点，从功率控制角度出发，以提高风电机组功率输出效率为目的，采用最大功率点跟踪控制策略(MPPT)实现对风能最大限度的捕获，提出了大范围快速对焦最优转速的控制策略。与传统爬山法相比，该方法具有寻优速度快、精确度高、简单易行的优点。在Power Simulation(PSIM)环境中仿真分析，研究结果表明：该控制策略对提高机组稳定性和功率转换效率具有一定的价值。 |
| 关键词: 低风速区间 D-PMSG 功率控制 MPPT 大范围快速对焦法 |
| DOI：10.7667/j.issn.1674-3415.2015.23.013 |
| 投稿时间：2015-02-02修订日期：2015-08-12 |
| 基金项目:国家自然科学基金资助项目(51107107)；中国博士后基金面上项目资助(2014M562335) |
|
| A power control method of wind turbines in low wind speed area |
| ZHANG Anan,GUO Hongding,YU Bing,LI Nan,LI Chao |
| (School of Electrical Engineering and Information, Southwest Petroleum University, Chengdu 610500, China;XJ Protection & Automation Systems Company, Xuchang 461000, China;State Grid Chengdu Electric Power Supply Company, Chengdu 610045, China) |
| Abstract: |
| Wind velocity alters rapidly and the density of wind energy is lower in low wind speed area, which greatly affect power conversion efficiency of wind turbines. Aimed at enhancing wind turbines efficiency of power output, MPPT is adopted to capture maximum wind power from the perspective of power control according to operating peculiarity of wind turbine in low wind speed area. On the basis, a control strategy of fast focusing optimal rotating speed in wide range is simple, highly accurate and quicker to achieve optimal solution compared with conventional climbing method. Simulation in Power Simulation (PSIM) shows that this control strategy has a certain value for improving wind turbine stability and power conversion efficiency. |
| Key words: low wind area D-PMSG power control MPPT fast focusing in wide range |
