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 |
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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 |
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 |