流体机械
流體機械
류체궤계
FLUID MACHINERY
2013年
11期
26-31,70
,共7页
王松岭%许小刚%刘锦廉%李非%戴谦
王鬆嶺%許小剛%劉錦廉%李非%戴謙
왕송령%허소강%류금렴%리비%대겸
风机%性能曲线模型%支持向量机%神经网络%优化%在线监测
風機%性能麯線模型%支持嚮量機%神經網絡%優化%在線鑑測
풍궤%성능곡선모형%지지향량궤%신경망락%우화%재선감측
fan%performance curve model%support vector machine%neural network%optimize%online monitoring
风机性能实时监测对电厂安全、经济运行具有重要意义，而对风机流量的准确实时监测是风机性能在线监测的关键。针对现场缺乏大管径流量准确测量手段的现状，本文采用风机无因次性能曲线中性能参数之间稳定的映射规律，并通过不同智能算法建立了风机全程流量测量模型，结果发现改进的支持向量机模型拟合精度更高，效果更好。最后，在改进支持向量机模型基础上，采用Visual Basic语言与Matlab混合编程方法，建立了风机性能在线监测平台，实现了对风机实际工况下的流量、性能的实时监测。
風機性能實時鑑測對電廠安全、經濟運行具有重要意義，而對風機流量的準確實時鑑測是風機性能在線鑑測的關鍵。針對現場缺乏大管徑流量準確測量手段的現狀，本文採用風機無因次性能麯線中性能參數之間穩定的映射規律，併通過不同智能算法建立瞭風機全程流量測量模型，結果髮現改進的支持嚮量機模型擬閤精度更高，效果更好。最後，在改進支持嚮量機模型基礎上，採用Visual Basic語言與Matlab混閤編程方法，建立瞭風機性能在線鑑測平檯，實現瞭對風機實際工況下的流量、性能的實時鑑測。
풍궤성능실시감측대전엄안전、경제운행구유중요의의，이대풍궤류량적준학실시감측시풍궤성능재선감측적관건。침대현장결핍대관경류량준학측량수단적현상，본문채용풍궤무인차성능곡선중성능삼수지간은정적영사규률，병통과불동지능산법건립료풍궤전정류량측량모형，결과발현개진적지지향량궤모형의합정도경고，효과경호。최후，재개진지지향량궤모형기출상，채용Visual Basic어언여Matlab혼합편정방법，건립료풍궤성능재선감측평태，실현료대풍궤실제공황하적류량、성능적실시감측。
Monitoring the fan performance and running state in real time is very important for the safety and economy of power plant.Besides, an accurate measurement of fan flow is the key of real time monitoring .Considering the current situation of the lack of accurate methods to measure the flow of large pipe , the mapping principle of steady operating parameters of fan based on dimensionless performance maps is discussed and the flow measurement models of fan based on different modeling intelligence al -gorithms are derived, we find that the accuracy of the modified support vector machine (SVM) model is higher.Finally, the on-line monitoring platform of fan is established by using Visual Basic language mixed with Matlab programming on the basis of im -proved SVM model , which can monitor the flow and performance of fan in different conditions on-line.
