基于特征参数的冷水机组模型抗干扰性分析  

Anti-interference analysis of chiller model based on characteristic parameters

作　　者：赵琳 梁彩华[1] 张小松[1] ZHAO Lin, LIANG Caihua, ZHANG Xiaosong(School of Energy and Environment, Southeast University, Nanjing 210096, Chin)

机构地区：[1]东南大学能源与环境学院,江苏南京210096

出　　处：《中南大学学报（自然科学版）》2018年第5期1265-1271,共7页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51676033);"十二五"国家科技支撑计划项目(2015BAL02B01)~~

摘　　要：基于将冷水机组未知的结构参数进行集总并由实测数据获取机组集总的结构参数(即特征参数)的建模方法,建立基于特征参数的冷水机组模型,并研究获取机组特征参数所需的实测数据中存在的测量误差对该建模方法及模型精度的影响规律。研究结果表明:当冷冻/冷却水流量、进/出口温度等机组实测值存在测量器具精度范围内的最大测量偏差时,冷水机组性能模拟值COP的相对误差小于2.5%,说明基于特征参数的冷水机组模型具有较高的抗干扰性。A modeling method which lumps unknown structural parameters of chiller and gets the lumped parameters by measured data was used to build the chiller model. The influence of measurement error in measured data on the modeling method and accuracy of the model was studied. The results show that when the measured data of freezing/cooling water flow, the inlet/outlet temperature and other units have the maximum measurement error within the accuracy range of the measuring instrument, the relative error of simulated coefficient of performance（COP） is less than 2.5%, which indicates that the chiller model based on characteristic parameters has high anti-interference ability.

关 键 词：测量误差 特征参数 冷水机组 抗干扰性 

分 类 号：TK413.74[动力工程及工程热物理—动力机械及工程]