双回路槽式太阳能电站集热系统动态特性  

Dynamic Characteristics of Collector System of Double Loop Trough Solar Power Station

作　　者：李换兵 崔凝[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,河北省保定市071003

出　　处：《电力建设》2015年第11期141-147,共7页Electric Power Construction

摘　　要：为研究双回路抛物面槽式太阳能光热电站聚光集热系统动态响应特性,以美国SEGS电站Ⅵ号机组(SEGSⅥ)为对象,采用理论建模和数字仿真的方法研究了双回路抛物面槽式太阳能电站聚光集热系统动态仿真模型。基于质量、能量、动量平衡方程,结合相关专业知识,建立了以导热油/蒸汽为工质的抛物面槽式太阳能聚光集热系统的数学模型。分析了太阳辐射强度、集热管入口油体积流量、入口油温度以及集热管真空度改变情况下集热管出口油温动态变化特性。试验结果表明,集热管出口油温随着太阳辐射强度、集热管入口温度的增大而升高,但随体积流量的增加而降低。真空度的破坏对集热管出口油温的影响较大。模型能够正确反映研究对象的动态特性,运算稳定可靠;模型不仅可用于对仿真对象运行特性进行研究,还可为双回路抛物面槽式太阳能热动力发电系统动态特性的研究,提供良好的基础模型。In order to study the dynamic response characteristics of thecollector systemof the double loop parabolic trough solar power. As America SEGS power plant unit Ⅵ（ SEGS Ⅵ） is the research object,with the theoretical modeling and numerical calculation,the dynamic simulation model about the double loop parabolic trough solar power station collector system is studied. Based on the mass,energy and momentum conservation equations and elements knowledge of relevant specialties,the mathematical model of a parabolic trough solar collector with heat conduction oil / steam is studied. Analysis of dynamic characteristics change of collector outlet temperature in the change of the intensity of solar radiation,oilentrance volume of collector,oil entrance temperature of collector,and the vacuum of collector. The experimental results showthat the outlet temperature of the collector increases with increase of the intensity of solar radiationand the temperature of the collector entrance,but it will decreases with the increase of the the volume flow. Vacuum damage has great influence on the outlet temperature of the collector. The model can correctly reflect the dynamic characteristic of the research object,the operation is stable and reliable; model not only can be used to study on the operation characteristics of the simulation object,provide a good basis for model for double loop parabolic trough solar thermal power generation system dynamic characteristics research.

关 键 词：集热系统 数学模型 仿真 动态分析 

分 类 号：TM615[电气工程—电力系统及自动化]