注入模式下DSG槽式系统滑模温度控制器设计  

Design of a Sliding Mode Temperature Controller in a DSG(Direct Steam Generation) Trough Type System Under an Injection Mode

作　　者：潘小弟[1] 王桂荣[1] 纪云锋[2] 

机构地区：[1]中国计量学院机电工程学院,浙江杭州310018 [2]杭州和利时自动化有限公司,浙江杭州310018

出　　处：《热能动力工程》2011年第4期466-470,498,共5页Journal of Engineering for Thermal Energy and Power

基　　金：浙江省自然科学基金资助项目(Y11108131)

摘　　要：以注入模式下DSG(直接产汽)槽式太阳能热发电系统中的太阳能阵列为研究对象,创新性地运用滑模控制,结合PI与串级控制算法设计温度控制器,以理论分析与仿真研究相结合的方法进行蒸汽温度控制研究,以在光照强度允许且给水已加热并稳定在200℃的条件下,通过调节给水阀给水流量控制太阳能阵列出口蒸汽温度稳定、准确地达到320℃,并控制各级集热器出口蒸汽温度稳定于期望值,初步解决太阳能阵列出口蒸汽温度稳定性与准确性控制问题。研究表明,将滑模算法用于太阳能阵列蒸汽温度控制是完全可行的,其稳定性、准确性与抗干扰控制性能较好。With a solar energy array in a DSG（direct steam generation） trough type solar energy power generation system under an injection mode serving as an object of study,designed was a temperature controller by creatively employing a sliding mode control and combining the PI（proportional and integal） control algorithm with the cascade one.Moreover,the steam temperature control was studied by using a method integrating the theoretical analysis with the simulation investigation.Under the condition that the sunshine illumination intensity is allowed and the feedwater has been heated and stabilized at 200 ℃,the steam temperature at the outlet of the solar energy array was controlled to stably and accurately attain 320 ℃ by adjusting the feedwater flow rate of the feedwater valve and the steam temperature at the outlet of various stages of the heat accumulator was controlled and stabilized at a value above the expected one,thus preliminarily solving the problem in controlling the stability and accuracy of the steam temperature at the outlet of the solar energy array.It has been found that to use the sliding mode algorithm to control the steam temperature of a solar energy array is fully feasible and the stability,accuracy and disturbance-resistant control performance are realatively good.

关 键 词：DSG 太阳能阵列 注入模式 非线性方程 出口温度 串级控制 滑模算法 

分 类 号：TM615[电气工程—电力系统及自动化] O232[理学—运筹学与控制论]