可再生能源2024，Vol.42Issue(5)：675-684,10.
考虑可再生能源接入的多端MMC交直流混合系统协调控制
Coordinated control of multi-terminal MMC AC/DC hybrid system considering renewable energy access
摘要
Abstract
The characteristics of zero moment of inertia of modular multilevel converter,it can not support the frequency fluctuation of AC power grid,so that the overall inertia of AC/DC hybrid system decreases,affecting the dynamic performance and stability of the system.Therefore,an improved power-voltage droop control combined with a virtual synchronous machine technology of coordinated control strategy,in the case of dc voltage stability of ac power grid frequency adjustment,at the same time,reasonable allocation of power between the converter,in the case of without communication system to establish effective energy management system.In order to verify the feasibility and effectiveness of the proposed control strategy,a comparative test was conducted with the traditional double closed-loop control.The results show that the proposed control strategy effectively solves the dynamic performance and stability problems of the system caused by low inertia and under damping.关键词
模块化多电平变换器/改进功率-电压下垂控制/虚拟同步机技术/频率调节Key words
modular multilevel converter/improved power-voltage droop control/virtual synchronous generator technology/frequency regulation分类
能源科技引用本文复制引用
李晓萍,袁至,王维庆,何山..考虑可再生能源接入的多端MMC交直流混合系统协调控制[J].可再生能源,2024,42(5):675-684,10.基金项目
国家自然科学基金(52067020,51767024) （52067020,51767024）
新疆维吾尔自治区重点实验室开放课题(2018D04005) （2018D04005）
新疆维吾尔自治区高校科研计划项目(XJEDU20211010). （XJEDU20211010）
