摘要
针对可再生能源聚合而形成带混合负载的直流微电网稳定性与协调性问题,提出一种将无源控制与改进非线性干扰观测器前馈补偿相结合的新型控制算法,在消除恒功率负载对直流微电网的影响的同时提高了系统鲁棒性,再利用线路阻抗补偿来改善分流精度与实现电压无偏差。该文利用Matlab/Simulink搭建并联DC-DC变换器仿真模型进行验证,通过对比传统无源控制与比例积分调节的无源控制表明,提出的控制策略抑制了恒功率负载与线路阻抗对直流微电网的影响。最后,在Opal-RT半实物实验平台验证了该策略的有效性。
Aiming at the stability and coordination of DC microgrid with mixed load formed by renewable energy aggregation,a new control algorithm combining passive control and improved nonlinear disturbance observer feedforward compensation is proposed,which not only eliminates the influence of constant power load on DC microgrid,but also improves the system robustness,Then the line impedance compensation is used to improve the shunt accuracy and realize no voltage deviation. The research uses Matlab/Simulink to build a parallel DC-DC converter,simulation model for verification. By comparing the traditional passive control and proportional integral regulation passive control,it is shown that the proposed control strategy suppresses the influence of constant power load and line impedance. Finally,the effectiveness of the strategy was verified on the Opal-RT semi-physical experiment platform.
作者
张泽华
宋桂英
侯明宣
杨博伟
张晓璐
刘畅
Zhang Zehua;Song Guiying;Hou Mingxuan;Yang Bowei;Zhang Xiaolu;Liu Chang(State Key Laboratory of Reliability and Intelligence of Electrical Equipment(School of Electrical Engineering,Hebei University of Technology),Tianjin 300130,China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province(School of Electrical Engineering,Hebei University of Technology),Tianjin 300130,China;Horqin District Power Supply Branch of Inner Mongolia East Electric Power Co.,Ltd.,Tongliao 028000,China;North China Electric Power Research Institute Limited Liability Company,Beijing 100045,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2022年第11期501-507,共7页
Acta Energiae Solaris Sinica
基金
河北省自然科学基金(E2020202177)
智能电网保护和运行控制国家重点实验室开放课题(SGNR0000KJJS1907542)。
