基于线性自抗扰的微电网无功控制  

Reactive power control of micro grid based on linear active distbance rejection control

作　　者：朱一昕 钱新 王靖芸 宗晨曦 宗瑜 Zhu Yixin;Qian Xin;Wang Jingyun;Zong Chenxi;Zong Yu(Key Laboratory of Light Industry,Ministry of Education,College of Internet of Things Engineering,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学物联网工程学院教育部轻工重点实验室,江苏无锡214122

出　　处：《可再生能源》2021年第11期1509-1514,共6页Renewable Energy Resources

基　　金：国家自然科学基金项目(51807079)。

摘　　要：针对下垂控制中因线路阻抗不匹配,导致微电网无功环流问题,文章采用了基于线性自抗扰(Linear Active Disturbance Rejection Control,LADRC)改进的一致性控制策略,均分网内无功功率。与传统的自抗扰控制器相比,由于LADRC代替了PID环节,不再需要积分控制项,避免了积分饱和现象,并且各分布式发电(Distributed Generation,DG)单元也摆脱了对中央处理器的依赖。仿真结果表明,文章所提出的LADRC改进一致性控制策略,可以有效地测量DG单元的无功功率数值,并实现对各DG单元的无静差控制、均分网内的无功功率。As a supplement to large power grid,micro power grid effectively realizes the flexible use of distributed generation(DG).To solve the problem of reactive circulation caused by line impedance mismatch in the microgrid dropper control,this paper uses the consistent control strategy improved linear Active disturbance Rejection Control(LADRC)to provide equal distribution of the reactive power in the network.Compared to the traditional active disturbance rejection controller,LADRC needs to design fewer parameters and provides a simpler value.Because of LADRC replaces the corresponding PID link,the system is no longer needed integral control,avoiding the integral saturation phenomenon,and through the DG units distributed control strategy can get rid of the dependence on the central processing unit(CPU),the results show that the proposed LADRC can effectively comprehend the DG unit reactive power value,and through the estimated compensation part of the implementation of DG units astatic control,finally in the consistency control strategies under the DG unit can split the network reactive power.The research results verify the effectiveness of this strategy.

关 键 词：微电网 分布式发电 无功环流 一致性理论 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程] TK51