考虑通信时延的事件触发电压分布式协同控制  

Event-triggered Voltage Distributed Cooperative Control With Communication Delay

作　　者：张占强 窦春霞 岳东 张博 张怀品 ZHANG Zhanqiang;DOU Chunxia;YUE Dong;ZHANG Bo;ZHANG Huaipin(Institute of Electrical Engineering,Yanshan University,Qinhuangdao 066044,Hebei Province,China;Institute of Advanced Technology,Nanjing University of Posts&Telecommunications,Nanjing 210023,Jiangsu Province,China)

机构地区：[1]燕山大学电气工程学院,河北省秦皇岛市066044 [2]南京邮电大学先进技术研究院,江苏省南京市210023

出　　处：《中国电机工程学报》2020年第17期5426-5434,共9页Proceedings of the CSEE

基　　金：国家重点研发计划项目(2018YFA0702200);国家自然科学基金项目(61833008);江苏省重点研发计划项目(BE2016184)。

摘　　要：在由多个分布式发电单元(distributed generation units,DG)构成的孤岛微电网(microgrid,MG)中,为减小由不匹配馈线阻抗导致的无功均分偏差,该文提出一种事件触发电压分布式协同控制(voltage distributed cooperative control,VDCC),旨在通过稳定的DGs电压同步来改善无功均分精度。首先,采用事件触发电压一致性控制方法,通过减少采样电压的传输来节约通信资源;其次,在逆变器电压内环采用具有通信输入时延的电压H∞跟踪控制,并采用李雅普诺夫泛函方法推导稳定性判据;最后,在MATLAB/Simulink中建立MG仿真模型,通过结果证明该方法的有效性。To reduce reactive power sharing error caused by mismatched feeder impedance in an islanded microgrid(MG)with multiple distributed generation units(DGs),this paper proposes an event-triggered voltage distributed cooperative control(VDCC).It aims to improve the accuracy of reactive power sharing by the stable voltage synchronization between DGs.Firstly,an event-triggered voltage consensus control was used to save communication resources by reducing the transmission of sampling voltage.Then,a voltage H∞tracking control with communication input-delay was designed in the voltage inner-loop of inverter,and its stability criterion was derived by using the Lyapunov functional method.Finally,the effectiveness of the proposed method was proved by a MG simulation model in MATLAB/Simulink.

关 键 词：孤岛微电网 无功均分 事件触发电压一致性 通信输入时延 H∞跟踪控制 

分 类 号：TM73[电气工程—电力系统及自动化]