摘要
光伏-光热联合发电系统将光伏发电系统与光热发电系统有机融合,兼具灵活的调节特性和高效互补技术特点,为可再生能源消纳开辟了一条新途径,但其建模与功率控制仍需深入研究。针对这一问题,采用微元分段线性化方法刻画系统的多变量耦合和介质相变换热动态过程,表征多能量转化环节和多时间尺度特征,建立了光伏-光热联合发电系统动态模型;构建了分层控制架构,提出了一种考虑系统储能状态的功率协调控制策略,实现了不同工况和控制模式下的光伏与光热子系统协同,从而提升了系统调节能力和响应性能;基于MATLAB/Simulink软件搭建了仿真模型,验证了模型的正确性和所提控制策略的有效性。
A hybrid PV-CSP(PhotoVoltaic and Concentrated Solar Power)system,which combines PV and CSP generation subsystems,has both the flexible regulation characteristics,and high-effective complementary technological features.The hybrid PV-CSP system brings a new path to accommodate renewable energy,however,more efforts are required in the modeling and control strategy of the hybrid PV-CSP system.A dynamic model of the hybrid PV-CSP system is built by subsection linearization method to describe the multi-variable coupling and thermal dynamic process of medium phase change,so that multiple energy conversion levels and multi-time scale characteristics are considered.A hierarchical control structure is built and a power coordinated control strategy based on the state of energy storage system is proposed to coordinate PV and CSP subsystems under various control modes and operating conditions.Thus,the regulation ability and response performance of the system are improved.A model is built based on MATLAB/Simulink software,and the correctness of the model and the effectiveness of the proposed control strategy are verified.
作者
林克曼
王召珩
吴峰
王欣蕊
王璨珉
林明耀
LIN Keman;WANG Zhaoheng;WU Feng;WANG Xinrui;WANG Canmin;LIN Mingyao(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China;School of Electrical Engineering,Southeast University,Nanjing 210096,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2021年第9期110-117,共8页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(52107086)
中央高校基本科研业务费专项资金资助项目(B17020017)。
