VAV空气处理机组故障检测与诊断方法及应用  

Method and Application of Fault Detection and Diagnosis for Variable Air Volume Air Handling Units

作　　者：王海涛[1,2] 陈友明[2] 

机构地区：[1]河南工业大学土木建筑学院,郑州450001 [2]湖南大学土木工程学院,长沙410082

出　　处：《北京工业大学学报》2014年第2期290-295,共6页Journal of Beijing University of Technology

基　　金：湖南省科技计划重点项目(2010WK4018)

摘　　要：针对变风量空气处理机组故障,考虑到变风量空调系统的动态性,给出了一种变风量空气处理机组故障检测与诊断方法.残差累积和(cumlative sum,CUSUM)控制图被用于检测空气处理机组故障,残差CUSUM控制图不仅可很好地适应变风量空调系统的动态性,还可消除数据自相关性对控制图性能的不利影响,有助于提高故障检测的准确性.根据质量守恒、能量守恒和控制原理,设计了3个基于规则的故障分类器,可用于寻找故障源.该故障检测与诊断方法在实际建筑中进行了在线应用,利用多种变风量空气处理机组故障验证了故障诊断方法的有效性和可靠性.Aimed at faults of variable air volume （VAV） air handling units, a fault detection and diagnosis （FDD） strategy using a hybrid approach is presented for VAV air handling units in this paper. Fault detection and diagnosis software is also developed based on the FDD strategy. Residual-based cumulative sum （CUSUM） control charts are utilized to detect faults in VAV air handing units. The residual-based CUSUM control chart can cope with the dynamic characteristics of the air handing units well. It can also improve the accuracy of fault detection by eliminating the effects of serial correlation on the performance of control charts. Three rule-based fault classifiers, derived from mass and energy balances, are used to find fault sources. The FDD strategy for VAV air handling units was online validated and tested on real VAV air-conditioning systems.

关 键 词：变风量空气处理机组 故障检测 故障诊断 残差累积和(CUSUM)控制图 专家规则 

分 类 号：TU831.3[建筑科学—供热、供燃气、通风及空调工程]