| 引用本文: | 凌禹,高强,蔡旭.紧急变桨与撬棒协调控制改善双馈风电机组低电压穿越能力[J].电力自动化设备,2013,33(4): |
| LING Yu,GAO Qiang,CAI Xu.Improvement of low-voltage ride-through by coordinated pitch control and Crowbar control for DFIG wind turbine[J].Electric Power Automation Equipment,2013,33(4): |
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| 摘要: |
| 针对撬棒保护电路技术存在的问题，介绍了一种快速变桨控制技术和撬棒保护电路技术协调的控制方法，利用该方法不仅能够限制双馈机组转子过电流，还能够抑制其转速的快速增加，从而防止机组过速跳闸，改善系统转速稳定性，确保双馈风电机组成功穿越电网电压跌落故障。利用仿真软件MATLAB／Simulink，完成了基于2个不同时间尺度的电压故障条件下的仿真实验。仿真实验结果验证了所提故障穿越方案的有效性，尤其是对于较长时间的电压故障，故障穿越能力提高的效果更为明显。 |
| 关键词: 双馈电机 撬棒保护 风电 变桨控制 协调控制 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（50907040）；上海市科学基金资助项目（10dz1203902） |
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| Improvement of low-voltage ride-through by coordinated pitch control and Crowbar control for DFIG wind turbine |
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LING Yu1,2, GAO Qiang1, CAI Xu1,3
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1.WPRC，School of Electronic Information and Electrical Engineering，Shanghai Jiao Tong University，Shanghai 200240，China;2.Department of Electrical Engineering，Shanxi Datong University，Datong 037003，China;3.SKLOE，School of Naval Architecture，Ocean and Civil Engineering，
Shanghai Jiao Tong University，Shanghai 200240，China
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| Abstract: |
| A scheme of coordination between pitch control and Crowbar control is presented，which prevents the over-speed trip，improves the system speed stability and ensures the low-voltage ride-through of DFIG （Doubly Fed Induction Generator） wind turbines by limiting the over current of rotor and suppressing the rapid increase of its speed. Simulative experiments are performed with MATLAB／Simulink for two voltage faults with different time durations and results show that the enhancement of ride-through capability is more obvious for long time voltage fault，verifying the validity of the proposed ride-through scheme. |
| Key words: doubly fed induction generator Crowbar protection wind power pitch control coordinated control |
