光热电站动态建模与递阶控制  

Dynamic Modelling of Concentrated Solar Power Plant and Hierarchical Control

作　　者：姚凌翔 王杨 肖先勇[1] 马志程 姚小明 YAO Lingxiang;WANG Yang;XIAO Xianyong;MA Zhicheng;YAO Xiaoming(College of Electrical Engineering,Sichuan University,Chengdu 610065,Sichuan Province,China;State Grid Gansu Electric Power Research Institute,Lanzhou 730070,Gansu Province,China;Lanzhou Dacheng Technology Co.,Ltd.,Lanzhou 730070,Gansu Province,China)

机构地区：[1]四川大学电气工程学院,四川省成都市610065 [2]国网甘肃省电力公司电力科学研究院,甘肃省兰州市730070 [3]兰州大成科技股份有限公司,甘肃省兰州市730070

出　　处：《中国电机工程学报》2023年第14期5512-5524,共13页Proceedings of the CSEE

基　　金：甘肃省科技计划重大专项项目支持(19ZD2GA003)。

摘　　要：光热发电具备优异的调峰调频性能,能为构建新型电力系统提供可靠支撑。由于光热发电技术仍处于快速更迭阶段,技术透明度较低,控制系统信息匮乏,严重阻碍了光热电站动态响应机理与支撑能力分析等研究。针对上述问题,该文建立光热电站精细化动态模型,并提出完整的控制系统设计框架与原理。该控制系统具备多种运行模式,能高效地实现各主次量之间的分层协调控制。通过西北某50MW光热电站的实际运行数据进行验证,结果表明,所建立的系统级光热电站模型在稳态和动态仿真中均与实际运行特性保持高度一致。进一步,基于实测数据分析各种内外扰动下所提控制系统的性能,表明主控系统能够有效地满足负荷及压力控制需求,而各子控系统也能高效地完成水位、汽温和盐流量的快速可靠控制。As an emerging power generation technology,the concentrated solar power(CSP)plant has excellent peak load and frequency regulation performance,and can provide reliable support for a new electric power system.The rapid updates of CSP technology results in low technical transparency and thus the lack of control system information,which seriously hinders the research on the dynamic response mechanism and support capability analysis of CSP plants.To deal with the problem,this paper establishes a detailed dynamic model of the CSP plant and proposes a complete control system.The control system can operate in different primary control modes,which can efficiently realize the hierarchical coordinated control between the primary and secondary quantities.The effectiveness of the established model is verified by the actual operation data of a real-life 50MW CSP plant located in northwest China.The results show that the established system-level CSP plant model is highly consistent with the actual operating characteristics in both steady-state and dynamic simulations.Furthermore,the performances of the proposed control system under various internal and external disturbances are analyzed in detail.The results show that the main control system can effectively meet the load and pressure control requirements,and the sub-control systems can also efficiently control the water level,steam temperature,and salt flow.

关 键 词：光热发电 动态建模 控制系统设计 实测验证 

分 类 号：TK514[动力工程及工程热物理—热能工程]