摘要
吸附压缩二氧化碳储能系统(Adsorption Compressed Carbon Dioxide Energy Storage System, ACCES)可克服CO_(2)高密度存储、充放及系统高效运行等技术难题,市场前景广阔,但对其动态特性缺乏深入认识,阻碍了系统设计与安全调控运行技术的发展。本文基于模块化建模思想建立了2 MW ACCES的动态仿真模型,用于模拟系统启动过程中各设备运行参数的变化规律。结果表明:储能阶段压缩机启动后轴功率迅速上升,并在120 s后稳定,且压缩机级数越高,所需稳定时间越长;释能阶段膨胀机轴功率从峰值下降,在500 s时稳定在915.6 kW、811.2 kW和601.8 kW;设定释能过程质量流量波动±1%,膨胀机输出轴功率波动范围接近±1%,需防范可能引起的电网冲击等问题。所建模型及研究结果为深入认识系统动态特性、系统设计和安全调控运行提供了有效的分析工具和数据参考,对推进ACCES的应用具有实际意义。
The ACCES can overcome the technical problems of high-density CO_(2) storage,charging and discharging,and efficient system operation,and has a promising market.This paper establishes a dynamic simulation model of a 2 MW ACCES based on the modular modeling idea,which is used to simulate the changes in the operating parameters of each piece of equipment during the system start-up process.The results show that the compressor’s shaft power rises rapidly after the start of the energy storage phase and stabilizes after 120 s.The higher the number of compressor stages,the longer the stabilization time required;the shaft power of the expander decreases from the peak during the energy release phase and stabilizes at 915.6 kW,811.2 kW,and 601.8 kW at 500 s;the mass flow rate fluctuates±1%during the energy release process and the output shaft power of the expander fluctuates in a range close to±1%,which needs to be guarded against possible grid shocks and other problems.The model and the results of the study provide an effective analysis tool and data reference for the in-depth understanding of the dynamic characteristics of the system,system design,and safety regulation and operation,and are of practical significance for promoting the application of ACCES technology.
作者
宋一丹
冯冬冬
张宇
董鹤鸣
杜谦
高建民
SONG Yi-dan;FENG Dong-dong;ZHANG Yu;DONG He-ming;DU Qian;GAO Jian-min(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)
出处
《节能技术》
CAS
2023年第4期291-300,共10页
Energy Conservation Technology
基金
2022年黑龙江省“碳达峰碳中和”榜单揭榜挂帅科技攻关项目(吸附压缩二氧化碳储能关键技术研究与示范:2022ZXJ09C01)
中央高校基本科研业务费专项资金(2022FRFK060006)。
关键词
ACCES
动态仿真模型
动态特性
储能过程
释能过程
AACES
dynamic simulation models
dynamic characteristics
energy storage processes
energy release processes
作者简介
宋一丹(2000~),男,硕士研究生,研究方向为超临界二氧化碳储能技术。
