暂态谐波电网下双馈风力发电机建模与控制技术OA北大核心CSTPCD
Modeling and Control Technology of Doubly-fed Induction Generator Based Wind Turbine in Power Grid with Transient Harmonic
换相失败、励磁涌流、冲击性负荷等引起的暂态谐波进入电网易造成双馈感应发电机(DFIG)产生变流器过流脱网、机组稳定性破坏等严重后果.为提高暂态谐波电网下DFIG的运行性能,改善其馈入电网的电能质量,首先,建立了暂态谐波电网下DFIG的数学模型;其次,提出了一种基于重复控制调节器的控制策略,在暂态谐波冲击下分别实现了转子电流平衡且正弦和定子电流平衡且正弦的控制目标;然后,分析了所提控制策略的控制性能,包括谐波电压抗干扰性能及控制目标切换后的稳定性能;最后,基于硬件在环仿真平台,对所提控制策略的有效性进行了实验验证.
Transient harmonics caused by commutation failure,excitation inrush current and impulsive loads entering the power grid can easily lead to serious consequences such as converter overcurrent and disconnection as well as unit stability damage in the doubly-fed induction generator(DFIG).To improve the operating performance of DFIG in the power grid with transient harmonic and improve its power quality fed into the power grid,the mathematical model of DFIG in the power grid with transient harmonic is firstly established.Secondly,a control strategy based on repetitive control regulator is proposed,which achieves the control objectives of rotor current balance and sine as well as stator current balance and sine under transient harmonic impact,respectively.Afterwards,the control performance of the proposed control strategy is analyzed,including harmonic voltage anti-interference performance and stability performance after switching the control target.Finally,based on the hardware-in-loop simulation platform,the effectiveness of the proposed control strategy is experimentally verified.
焦浩然;金萧;许国东;周波;年珩
浙江大学电气工程学院,浙江省杭州市 310027浙江运达风电股份有限公司,浙江省杭州市 311106国网四川省电力公司电力科学研究院,四川省成都市 610041
暂态谐波双馈风力发电机重复控制控制策略
transient harmonicdoubly-fed induction generator(DFIG)repetitive controlcontrol strategy
《电力系统自动化》 2024 (003)
82-92 / 11
国家自然科学基金资助项目(52325702). 本文研究受到国网四川省电力公司科技项目(52199722000H)资助,特此感谢! This work is supported by National Natural Science Foundation of China(No.52325702).
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