10MW塔式太阳能热发电系统动态仿真模型研究

发布时间：2019-01-10 09:25

【摘要】：太阳能是一次能源和清洁能源的代表，塔式太阳能热发电技术是目前应用最广泛的太阳能热发电技术。只有建立塔式太阳能热发电系统动态数学模型，同时考虑系统的完整性(包含主辅系统)和各个设备部件在运行中的相互作用与影响，才能准确分析不同因素变化对塔式太阳能热发电系统各参数的影响，因此研究塔式太阳能热发电系统的动态特性模型具有非常重要的意义。本文以10MW塔式太阳能热发电系统为研究对象，将系统划分为聚光集热子系统、储能子系统和汽轮机发电子系统，并借助一体化模型开发平台，将各个子系统分解成各个设备和过程环节。基于简化的物理模型，根据质量守恒方程、能量守恒方程、动量守恒方程及其它补充方程和机理过程，建立了各设备和过程的动态数学模型，采用Fortran语言编制各设备和过程环节的算法程序并进行标准化处理，得到塔式太阳能热发电系统各设备的动态仿真模型，再通过流体网络连接和系统集成，建立了整个发电系统的仿真模型。选取光照充足和光照不足的两种典型运行模式进行仿真试验，分别研究10MW塔式太阳能热发电系统在光照强度为1000W/m2和750W/m2下的静态特性和加入光照强度扰动的动态特性，得到各热力设备模块内工质的压力、温度和流量等参数随光强扰动的响应曲线，，并对仿真试验的结果进行理论分析，得到一些有价值的结论，为后续大容量塔式太阳能热发电站的设计和优化运行提供了一定的参考。
[Abstract]:Solar energy is the representative of primary energy and clean energy. Tower solar thermal power generation technology is the most widely used solar thermal power technology. Only the dynamic mathematical model of the tower solar thermal power system is established, and the interaction and influence of the integrity of the system (including the main-auxiliary system) and the components of each equipment in the operation are considered at the same time. In order to accurately analyze the influence of different factors on the parameters of the tower solar thermal power generation system, it is very important to study the dynamic characteristic model of the tower solar thermal power generation system. In this paper, the 10MW tower solar thermal power generation system is taken as the research object. The system is divided into three parts: the concentrated heat collection subsystem, the energy storage subsystem and the steam turbine generation electronic system, and the integrated model development platform is used to develop the system. Decompose each subsystem into each equipment and process link. Based on the simplified physical model and the mass conservation equation, energy conservation equation, momentum conservation equation and other supplementary equations and mechanism processes, the dynamic mathematical models of each equipment and process are established. The algorithm program of each equipment and process link is compiled and standardized by Fortran language, and the dynamic simulation model of each equipment in the tower solar thermal power generation system is obtained, and then the system is integrated through fluid network connection. The simulation model of the whole power generation system is established. Two typical operation modes with sufficient and insufficient illumination were selected for simulation experiments to study the static characteristics and dynamic characteristics of 10MW tower solar thermal power system under the illumination intensity of 1000W/m2 and 750W/m2 respectively. The response curves of the parameters such as pressure, temperature and flow rate of the working fluid in each thermal equipment module with light intensity disturbance are obtained. The simulation results are analyzed theoretically and some valuable conclusions are obtained. It provides a certain reference for the design and optimization operation of the large-capacity solar thermal power station.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM615

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