Adaptive linear active disturbance-rejection control strategy reduces the impulse current of compressed air energy storage connected to the grid  

作　　者：Jianhui Meng Yaxin Sun Zili Zhang 

机构地区：[1]State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Baoding 071003,P.R.China [2]State Grid Handan Electric Power Supply Company,Handan 056035,P.R.China

出　　处：《Global Energy Interconnection》2024年第5期577-589,共13页全球能源互联网（英文版）

基　　金：supported by National Natural Science Foundation of China(Project No.52077079).

摘　　要：The merits of compressed air energy storage(CAES)include large power generation capacity,long service life,and environmental safety.When a CAES plant is switched to the grid-connected mode and participates in grid regulation,using the traditional control mode with low accuracy can result in excess grid-connected impulse current and junction voltage.This occurs because the CAES output voltage does not match the frequency,amplitude,and phase of the power grid voltage.Therefore,an adaptive linear active disturbance-rejection control(A-LADRC)strategy was proposed.Based on the LADRC strategy,which is more accurate than the traditional proportional integral controller,the proposed controller is enhanced to allow adaptive adjustment of bandwidth parameters,resulting in improved accuracy and response speed.The problem of large impulse current when CAES is switched to the grid-connected mode is addressed,and the frequency fluctuation is reduced.Finally,the effectiveness of the proposed strategy in reducing the impact of CAES on the grid connection was verified using a hardware-in-the-loop simulation platform.The influence of the k value in the adaptive-adjustment formula on the A-LADRC was analyzed through simulation.The anti-interference performance of the control was verified by increasing and decreasing the load during the presynchronization process.

关 键 词：Compressed air energy storage Linear active disturbance-rejection control Smooth grid connection Impulse current Adaptive adjustment of bandwidth parameters 

分 类 号：TM73[电气工程—电力系统及自动化] TK02[动力工程及工程热物理]