考虑储氢压强的风氢耦合系统构网型自适应控制策略
Self-adaptive control strategy of wind-hydrogen coupling system considering hydrogen storage pressure
张维昊 1任永峰 1贺彬 1照日格图 1方琛智 1陈建1
作者信息
- 1. 内蒙古工业大学能源与动力工程学院,内蒙古 呼和浩特 010051
- 折叠
摘要
针对风氢耦合系统接入弱电网下负荷变动导致系统频率波动及越限问题,提出基于储氢系统压强动态反馈的构网型虚拟同步发电机(virtual synchronous generator,VSG)转动惯量自适应控制策略.首先建立了构网型风氢耦合系统物理仿真模型,推导有功功率闭环传递函数,分析了转动惯量和阻尼系数对系统功频振荡特性的影响情况;然后考虑储氢系统压强的动态变化实时优化转动惯量的计算,保证风氢耦合系统在电网频率波动及负荷有功波动下稳定运行;最后通过MATLAB/SIMULINK进行策略验证.研究结果表明:采用构网型自适应方法可加快系统频率恢复,大幅度提升系统的动态响应能力,实现风氢耦合系统稳定运行.
Abstract
To address the frequency fluctuations and exceeding limits caused by load changes when wind hydrogen coupling system is connected to the weak current grid,a grid type virtual synchronous generator(VSG)moment of inertia self-adaptive control strategy based on dynamic feedback of hydrogen storage system pressure is proposed.Firstly,a physical simulation model of the grid type wind hydrogen coupling system is established,the closed-loop transfer function of active power is derived,and the influence of rotational inertia and damping coefficient on the power frequency oscillation characteristics of the system is analyzed.Then,considering the dynamic changes in pressure of the hydrogen storage system,the moment of inertia calculation is optimized in real time to ensure stable operation of the wind hydrogen coupling system under grid frequency fluctuations and load active power fluctuations.Finally,the strategy is validated using MATLAB/SIMULINK platform.The results show that,using the grid type self-adaptive method can accelerate the frequency recovery of the system,significantly improve the dynamic response ability of the system,and achieve stable operation of the wind hydrogen coupling system.
关键词
风氢耦合系统/构网型虚拟同步发电机/自适应控制/转动惯量Key words
wind-hydrogen coupling system/grid-forming VSG/self-adaptive control/moment of inertia引用本文复制引用
基金项目
国家自然科学基金项目(52367022)
国家自然科学基金项目(51967016)
内蒙古自治区重点研发和成果转化项目(2023YFHH0077)
内蒙古自治区科技创新重大示范工程"揭榜挂帅"项目(2023JBGS0013)
自治区直属高校基本科研业务费项目(JY20220094)
自治区直属高校基本科研业务费项目(JY20230066)
自治区直属高校基本科研业务费项目(ZTY2023034)
出版年
2024
国家科技期刊平台
NSTL
万方数据