电力系统保护与控制2025，Vol.53Issue(3)：37-46,10.DOI:10.19783/j.cnki.pspc.240461
适用于光伏接入中压直流配电网的改进型LADRC恒压控制策略
Improved LADRC constant voltage control strategy for photovoltaic integration into MVDC distribution networks
摘要
Abstract
When external disturbances occur,the bus voltage of a MVDC distribution system with PV integration will fluctuate,posing challenges to the stable operation of the power system.In this paper,a PV constant voltage control strategy based on improved linear active disturbance rejection control(LADRC)is proposed to address the insufficient disturbance rejection of traditional PV constant voltage control strategies.For the two-stage integrated DC/DC converter,a linear extended state observer(LESO)based on differential feedback is used to design the improved LADRC structure,and the parameter tuning,disturbance rejection,and stability of the controller are analyzed in detail.The effects of PV constant voltage control using PI control,traditional LADRC,and improved LADRC are compared on a simulation platform.The results show that the PV constant voltage control strategy based on the improved LADRC has excellent anti-interference capability and can restore the DC bus voltage to stability with smaller overshoot and faster response speed.关键词
光伏发电系统/中压直流系统/线性自抗扰控制/抗干扰能力Key words
photovoltaic power generation system/MVDC system/linear active disturbance rejection control/anti-interference capability引用本文复制引用
李辰佳,李琰,范译文,刘超,王聪,何杨..适用于光伏接入中压直流配电网的改进型LADRC恒压控制策略[J].电力系统保护与控制,2025,53(3):37-46,10.基金项目
This work is supported by the National Natural Science Foundation of China(No.U23B20120). 国家自然科学基金项目资助(U23B20120) （No.U23B20120）
