用于0.4kV微电网的四桥臂APF改进型控制策略研究  

IMPROVED CONTROL STRATEGY OF FOUR-LEGGED ACTIVE POWER FILTERS IN 0.4 kV MICRO GRID

作　　者：刘翼肇 许进 王金浩 雷达 李慧蓬 Liu Yizhao;Xu Jin;Wang Jinhao;Lei Da;Li Huipeng(Electric Power Research Institute,State Grid Shanxi Electric Power Company,Taiyuan 030001,China;Measurement Center of State Grid Shanxi Electric Power Company,Taiyuan 030032,China)

机构地区：[1]国网山西省电力公司电力科学研究院,太原030001 [2]国网山西省电力公司计量中心,太原030032

出　　处：《太阳能学报》2019年第11期3119-3126,共8页Acta Energiae Solaris Sinica

摘　　要：采用无谐波检测控制原理,提出一种基于多内模原理的四桥臂APF改进型控制策略。首先通过等量代换直接将网侧电流、直流母线电压作为状态变量,建立四桥臂APF在αβγ静止坐标系下的数学模型。然后,针对应用于0.4 kV微电网的四桥臂APF的特殊要求:功率波动频繁、动态响应速度快,在αβγ静止坐标系下采用所提出的四桥臂APF改进型控制策略,即由比例积分PI、矢量谐振VR、重复控制RC构成的多内模复合控制器作为四桥臂APF的电流环控制器,使得四桥臂APF具有动态响应速度快、稳态精度高、计算量小的特点,为0.4 kV微电网的优质电能提供保障。最后通过仿真和实验验证所提控制策略的可行性。In order to solve the deterioration of power quality caused by power electronic devices in 0.4 kV micro grid,it is necessary to improve the four-legged APF control strategy. This paper adopts the use of non-harmonic detection and proposes an improved control strategy of four-legged APF based on multi-model principle. Firstly,the mathematical model of the four-legged APF in the stationary coordinate system is established by replacing the network side current and the DC bus voltage directly as the state variables. Secondly,the four-legged APF in 0.4 kV micro grid requirements the power fluctuation and fast dynamic response,the proposed control strategy of the four-legged APF in the stationary coordinate system is applied,namely proportional integral,vector resonant and repetitive control composite controller as the current loop controller of the four-legged APF with fast dynamic response,high accuracy and small amount of calculation,provide guarantee for the power quality in 0.4 kV micro grid. Finally,the feasibility of the proposed control strategy is verified by simulation and experiments.

关 键 词：微电网 四桥臂APF 无谐波检测 多内模原理 矢量谐振 重复控制 

分 类 号：TM77[电气工程—电力系统及自动化]