电网技术2017，Vol.41Issue(12)：3824-3831,8.DOI:10.13335/j.1000-3673.pst.2017.0748
基于线性自抗扰的微电网平滑切换控制策略
Control Strategy for Microgrid Seamless Switching via Linear Active Disturbance Rejection
摘要
Abstract
A novel seamless switching strategy for microgrid operation between grid-connection and island modes was proposed based on its essential premise of microgrid security and reliability. Taking a microgrid with master/slave control mode as research object, the outer voltage controller of the master control unit was designed based on principle of linear active disturbance rejection control (LADRC). Since extended state observer (ESO) estimated the total real-time disturbances by taking them as an extended state, these disturbances can be compensated actively to the settings of inner current loop, resulting in quick disturbance elimination and smooth transition operation. The transfer functions of the first order LADRC and master control system were deduced and amplitude-frequency analysis demonstrated superiority of the proposed strategy in setting tracking and disturbance rejection performance. Simulation results show that it can smooth transient oscillation during switching process effectively and possesses strong robustness; and it is easy to tune and implement.关键词
微电网/平滑切换/线性自抗扰控制/扩张状态观测器Key words
microgrid/seamless switching/linear active disturbance rejection control/expanded state observer分类
信息技术与安全科学引用本文复制引用
袁晓冬,楼冠男,陈亮,李强,柳丹,顾伟..基于线性自抗扰的微电网平滑切换控制策略[J].电网技术,2017,41(12):3824-3831,8.基金项目
国家自然科学基金(51477029) （51477029）
国家重点研发计划项目(2016YFB0900400).Project Supported by National Natural Science Foundation of China (NSFC) (51477029) （2016YFB0900400）
The National Key Research and Development Program of China (2016YFB 0900400). （2016YFB 0900400）
