高渗透率下变速风力机组虚拟惯性控制的研究

发布时间：2018-03-09 21:48

本文选题：虚拟惯性　切入点：双馈感应发电机　出处：《中国电机工程学报》2017年02期 　论文类型：期刊论文

【摘要】：由于双馈感应发电机的电力电子变换器将风机转速和电网频率进行了解耦,导致其对电力系统的惯性控制几乎没有任何贡献。随着风电场在电网中的渗透率的不断提高,这种电网频率的波动会越来越明显。为了能够将“隐藏”在双馈感应发电机中的惯性进行有效的利用,将双馈感应发电机的旋转质量块和并联在转子侧变换器和电网侧变换器之间的超级电容器同时作为虚拟惯性源,并采用自适应模糊控制策略来进行控制。通过在实时仿真平台RT-LAB上对不同比例的风电装机容量的电力系统进行实验分析。与其他控制方法进行对比发现,当系统负荷突然发生变化后,所提出的混合虚拟惯性控制法能够迅速地提供有功功率支持,并能在频率误差减少后很快地恢复到MPPT状态。
[Abstract]:Since the power electronic converter of doubly-fed induction generator decouples the fan speed from the frequency of the power grid, it makes little contribution to the inertial control of power system. In order to make the "hidden" inertia in the doubly-fed induction generator more and more obvious, The rotating mass block of the doubly-fed induction generator and the supercapacitor parallel between the rotor side converter and the grid side converter are used as the virtual inertial source simultaneously. The adaptive fuzzy control strategy is used to control the power system with different proportion of wind power installed capacity on the real-time simulation platform RT-LAB. The results are compared with other control methods. When the load of the system changes suddenly, the hybrid virtual inertial control method can provide active power support rapidly and recover to the MPPT state quickly after the frequency error is reduced.
【作者单位】：徐州工业职业技术学院机电工程学院;中国矿业大学信电学院;
【分类号】：TM315

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