电工技术学报  2020, Vol. 35 Issue (11): 2427-2438    DOI: 10.19595/j.cnki.1000-6753.tces.181500
电力系统 |
一种用于消除孤岛微网结构扰动的鲁棒控制策略
孙孝峰1, 马宏磊1, 贾磊磊1, 2, 李昕1
1.电力电子节能与传动控制河北省重点实验室(燕山大学) 秦皇岛 066004;
2.电磁变换与探测河南省重点实验室(洛阳师范学院) 洛阳 471934
A Robust Control Strategy for Eliminating the Structure Disturbance of Islanding Microgrid
Sun Xiaofeng1, Ma Honglei1, Jia Leilei1, 2, Li Xin1
1. Key Lab of Power Electronics for Energy Conservation & Motor Drive of Hebei Province Yanshan University Qinhuangdao 066004 China;;
2. Key Lab of Electromagnetic Transformation and Detection of Henan Province Luoyang Normal University Luoyang 471934 China
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摘要 分布式发电装置通过固态变压器(SST)接入配电网中,利用通信系统,可形成智能电网。智能电网孤岛运行时,利用其可进行通信的优势,采用主从控制。系统运行过程中,若从机出现故障,切除或修复故障以后重新并入,会改变系统的结构,从而影响系统的稳定性。针对此问题,该文分析了主机模型的不确定性,然后基于混合灵敏度问题设计用于微网主从控制的鲁棒控制器。主机采用所设计的鲁棒控制器为整个系统提供电压支持。通过所设计的鲁棒控制器,增强了系统电压对于从机数量变化带来的扰动的鲁棒性,使得从机数量或者负荷发生改变时整个系统电压幅值和频率仍能保持稳定。最后利用Matlab/Simulink 仿真平台与RTDS硬件在环实验平台进行了仿真和实验验证,结果说明了所提控制器的有效性。
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关键词 混合灵敏度鲁棒控制智能电网主从控制    
Abstract:The distributed generation devices are operated in parallel by solid state transformer (SST), after utilizeing the communication system, an intelligent microgrid can be formed, the master-slave control can be adopted by utilizeing the advantage of communication when the smart grid is running in islanded condition. During the operation of the system, if the slave is cut off because of the fault or reconnected after repaired, the structure of the system will be changed, which will affect the stability of the system. For dealing with this problem, the uncertainty of the master’s model is analyzed in this paper, and then the robust controller is designed based on the mixed sensitivity for master-slave control of microgrid. The master uses the designed robust controller to supprot voltage for the entire system. Through the designed robust controller, the robustness of the system voltage to the disturbance caused by the change of the number of slaves is enhanced, so that the system voltage amplitude and frequency can be stabilized when the number of slaves or load changes. Finally, the simulation and experimental verification of the Matlab/Simulink simulation platform and the RTDS controller hardware in the loop (CHIL) platformare carried out. The results show the effectiveness of the proposed controller.
Key wordsMixed sensitivity    robust control    smart grid    master-slave control   
收稿日期: 2018-09-04     
PACS: TM46  
基金资助:国家自然科学基金(51677162)、河北省自然科学基金(E2017203337)和河北省重点研发计划(19214405D)资助项目
通讯作者: 孙孝峰 男,1970年生,教授,博士生导师,主要研究方向为变流器拓扑及波形控制技术、功率因数校正与有源滤波技术、新能源变换与组网技术。E-mail:sxf@ysu.edu.cn   
作者简介: 马宏磊 男,1993 年生,硕士研究生,研究方向为新能源并网及控制技术。 E-mail:mahonglei@greatwall.com.cn
引用本文:   
孙孝峰, 马宏磊, 贾磊磊, 李昕. 一种用于消除孤岛微网结构扰动的鲁棒控制策略[J]. 电工技术学报, 2020, 35(11): 2427-2438. Sun Xiaofeng, Ma Honglei, Jia Leilei, Li Xin. A Robust Control Strategy for Eliminating the Structure Disturbance of Islanding Microgrid. Transactions of China Electrotechnical Society, 2020, 35(11): 2427-2438.
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