DSG型抛物面槽式太阳能热电站热力系统实时动态仿真模型研究  

Study on Real-time Dynamic Simulation Model for DSG Parabolic Trough Solar Power Station Thermodynamic System

作　　者：崔凝[1] 徐国强[1] 马士英[2] 

机构地区：[1]北京航空航天大学,北京市海淀区100191 [2]保定华仿科技有限公司,河北省保定市071051

出　　处：《中国电机工程学报》2014年第11期1787-1798,共12页Proceedings of the CSEE

摘　　要：采用模块化建模方法研究了无蓄热装置再循环方式直接产生蒸汽型抛物面槽式太阳能热动力发电站(solar thermal power plant using direct steam generation in parabolic trough collectors filed,DSG-PTCs-STTP)热力系统动态仿真模型。依照守恒定律和热力学、传热学、流体力学等基本关系式,在一定简化条件下,研究了抛物面槽式聚光集热系统的聚光器、预热段、蒸发段、过热段及汽水缓冲分离器的数学模型,结合其他已有的仿真模型(如流体网络、汽轮机、凝汽器、除氧器、水泵、发电励磁等过程及设备模型等),建立了完整的DSG-PTCs-STTP热力系统实时动态仿真模型。仿真试验表明所开发的仿真模型能够正确反映研究对象热力系统动态特性和全工况运行过程,模型运算稳定可靠。可用于DSG-PTCs-STTP机组实时仿真系统的开发,还可为机组运行特性研究和控制系统验证提供良好的非线性对象模型。With an modular modeling method, a real-time dynamic simulation model for the thermodynamics system of a solar thermal power plant using direct steam generation in parabolic trough collectors filed （DSG-PTCs-STTP） without heat storage was developed. With certain simplification and assumption, the mathematics model about the solar collector fields, pre-heat, evaporator, super-heat system and buffer steam accumulator in a DSG solar collection and heating system were studied on the basis of the conservation principle and the basic equations of engineering thermodynamics, heat transfer theory and hydrodynamics. The complete real-time dynamic simulation model for the thermodynamic system of DSG-PTCs-STTP was built on the basis of above mathematics models and combined other relevant model （such as fluid network, turbine, condenser, deaerator, pump, alternator and excitation system）. The simulation tests show that the developed simulation model can correctly simulate the dynamic characteristic and overall operating process of the DSG-PTCs-STTP, the iterative method applied in the models is stable. The dynamic simulation model can be used to develop the DSG-PTCs-STTP simulator, and is a good nonlinear object model for testing and validating the control system, and studying the operating performance of the DSG-PTCs-STTP.

关 键 词：直接产生蒸汽 抛物面槽式聚光集热 太阳能热力电站 动态模型 仿真 

分 类 号：TM615[电气工程—电力系统及自动化] TP319[自动化与计算机技术—计算机软件与理论]