基于自抗扰技术的直流微电网分布式二次控制策略研究  

Research on Distributed Secondary Control Strategy of DC Microgrid Based on Active Disturbance Rejection Technology

作　　者：杨照光 尚彦赟 宋红为 张永强 卢广旗 YANG Zhaoguang;SHANG Yanyun;SONG Hongwei;ZHANG Yongqiang;LU Guangqi(State Grid Gansu Comprehensive Energy Service Co.,Ltd.,Lanzhou 730070,China;State Grid Tianshui Power Supply Company,Tianshui 741000,China)

机构地区：[1]国网甘肃综合能源服务有限公司,甘肃兰州730070 [2]国网天水供电公司,甘肃天水741000

出　　处：《控制工程》2024年第11期1954-1962,共9页Control Engineering of China

基　　金：甘肃省电力公司科技项目(522702220002)。

摘　　要：直流下垂控制因其易于实现而被广泛应用于直流微电网。然而,下垂控制自身的局限性不容忽视。并且对于直流微电网这个不确定、强耦合和多扰动的系统来说,应对系统的不确定性也是控制方法的研究重点。因此,提出了一种新型的直流微电网分布式二次控制方案,用于实现功率精准分配和母线电压调节。在所提控制方法中将自抗扰控制技术引入到二次控制器的设计中,以提升系统应对干扰的能力。分析验证了所提二次控制方法的稳定性和控制性能。并且研究了控制参数变化对所提控制器的影响,仿真和实验证明了所提分布式二次控制方法的有效性。DC droop control is widely used in DC microgrids because of its ease of implementation.However,the limitations of droop control itself can't be ignored.The DC microgrid,which is an uncertain,strongly coupled and multi-disturbed system,coping with the uncertainty of the system is also the focus of the control method.Therefore,a novel distributed secondary control scheme for DC microgrids is proposed to achieve precise power distribution and bus voltage regulation.The active disturbance rejection control technology is introduced into the design of the secondary controller to improve the anti-disturbance performance of the system.The analysis verifies the stability and control performance of the proposed secondary control method.The influence of the control parameter changes on the proposed controller is studied.Simulation and experimental studies demonstrate the feasibility and good dynamic performance of the proposed distributed secondary control method.

关 键 词：线性自抗扰控制 分布式二次控制 直流微电网 下垂控制 

分 类 号：TP712[自动化与计算机技术—检测技术与自动化装置]