摘要
为研究先进绝热压缩空气储能(AA-CAES)系统启动过程中膨胀机运行调控策略、复杂性和稳定性,基于所建立的膨胀机释能模型,对膨胀机入口处的温度与压力参数实施比例-积分-微分(PID)控制。系统分析了压力增益系数K和温度比例系数Kp对膨胀机启动特性的影响,包括输出功率、出口温度与出口压力的动态响应以及启动过程的稳定性,从而提升系统应对关键设备突发故障的抗干扰能力。研究结果显示:K=0.5时,相较于K=1.5,其输出功率峰值高出4.2%,压力下降更为平缓,曲线变化斜率较小,表现出更好的响应平滑性;Kp=0.1时膨胀比峰值较Kp=0.5高约0.54%,而不同Kp下的等熵效率峰值一致,均达到0.88;K=1.0时,出口温度峰值最小且稳定时间最短;Kp=0.3时,等熵效率能够迅速趋于稳定。结果表明,通过合理调控PID参数可显著改善膨胀机启动性能,可为解决因关键设备故障导致的机组稳定性下降问题提供控制策略。
To investigate the operational regulation strategy,complexity,and stability of the expander during the startup process of an advanced adiabatic compressed air energy storage(AA-CAES)system,proportional-integral-derivative(PID)control was implemented on the temperature and pressure parameters at the expander inlet based on the established expander energy release model.The effects of the pressure gain coefficient K and temperature proportional coefficient Kp on the startup characteristics of the expander were systematically analyzed,including the dynamic responses of output power,outlet temperature,and outlet pressure,as well as the stability during the startup process,thereby enhancing the system's anti-interference capability to address sudden failures of key equipment.The results showed that when K=0.5,compared with K=1.5,the output power peak was 4.2%higher,the pressure decline was more gradual,and the curve slope was smaller,exhibiting better response smoothness.When Kp=0.1,the peak expansion ratio was about 0.54%higher than that when Kp=0.5,while the peak isentropic efficiency at different Kp values remained consistent,both reaching 0.88.When K=1.0,the peak outlet temperature was the smallest and the stabilization time was the shortest.When Kp=0.3,the isentropic efficiency could rapidly stabilize.The findings indicate that reasonable regulation of PID parameters can significantly improve the expander startup performance,thereby providing control strategies for solving the problem of unit stability degradation caused by key equipment failures.
作者
文贤馗
李雅琴
张世海
范强
叶华洋
谢毅颖
李新卓
WEN Xiankui;LI Yaqin;ZHANG Shihai;FAN Qiang;YE Huayang;XIE Yiying;LI Xinzhuo(Electric Power Research Institute,Guizhou Power Grid Company Limited,Guiyang 550002,China;College of Energy and Power Engineering,Changsha University of Science and Technology,Changsha 410114,China)
出处
《综合智慧能源》
2025年第12期81-88,共8页
Integrated Intelligent Energy
基金
贵州省科技计划项目(黔科合平台人才-CXTD〔2022〕008)。
关键词
先进绝热压缩空气储能系统
膨胀机释能
PID控制
启动稳定性
温度比例系数
压力增益系数
advanced adiabatic compressed air energy storage system
expander energy release
PID control
startup stability
temperature proportional coefficient
pressure gain coefficient
