摘要
直流电压同步性的控制一直以来都是微电网系统中的一大挑战,它直接影响着微电网间的通信和能量传输效率。提出了一种基于光伏新能源的直流微电网光电压控制方法,旨在改善直流电压同步性能。采用分布式协同控制策略和光通信隔离技术,引入了基于积分的线性光通信二次稳压器,实现了输出电压和导数的同步控制。通过引入全局性能指标,有效减少电压纹波和稳态误差,并在实验中验证了其有效性。该方法不仅降低了当地微电网电压同步误差,还最大限度地减少了邻近微电网同步误差,将DC-DC降压转换器之间的相互作用从物理层转移到通信层。仿真实验结果表明,在输入电压扰动下,该方法具有良好的电压同步性能、电压纹波消除能力和电压收敛速度,突出了光通信技术在光伏新能源直流微电网中的重要作用。
The control of DC voltage synchronization has always been a major challenge in microgrid systems,as it directly affects the communication and energy transfer efficiency between microgrids.This article proposes a photovoltaic new energy based photovoltaic voltage control method for DC microgrids,aiming to improve the synchronization performance of DC voltage.By adopting a distributed collaborative control strategy and optical communication isolation technology,a linear optical communication secondary regulator based on integration is introduced to achieve synchronous control of output voltage and derivative.By introducing global performance indicators,voltage ripple and steady-state error were effectively reduced,and their effectiveness was verified in experiments.The voltage synchronization error of the local microgrid was reduced.The synchronization error of adjacent microgrids was minimized.The interaction between DC-DC buck converters were transfered from the physical layer to the communication layer.The simulation experiment results show that under input voltage disturbances,this method has good voltage synchronization performance,voltage ripple elimination ability,and voltage convergence speed,highlighting the important role of optical communication technology in photovoltaic new energy DC microgrids.
作者
赵郭燚
张全
董玉璐
刘明明
陈鑫
赵金利
ZHAO Guo-yan;ZHANG Quan;DONG Yu-lu;LIU Ming-ming;CHEN Xin;ZHAO Jin-li(Customer Service Center of State Grid Corporation Limited,Tianjin 300304,China;Beijing CLP Puhua Information Technology Co.,LTD,Beijing 100089,China)
出处
《光学与光电技术》
2025年第1期53-60,共8页
Optics & Optoelectronic Technology
关键词
光伏新能源
直流隔离微电网
光通信
光电压控制
s photovoltaic new energy
DC isolated microgrid
optical communication
photovoltage control
作者简介
赵郭燚(1984-),男,硕士,高级工程师,主要研究方向为电力营销稽查。
