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基于数据融合的燃料量软测量及煤质发热量在线校正 预览 被引量:14

Soft Measurement of Fuel Quantity Based on Data Fusion and On-line Calibration of Coal Heat Values
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摘要 为了提高燃料量测量的准确性和可靠性。提出了基于数据融合的燃料量软测量方法。主要通过与燃料量相关的测量值和对现场运行数据的统计分析,建立了燃料量软测量模型。利用数据融合技术对多个传感器的数据进行了处理,有效提高了软测量数据的准确性。通过仿真验证,建立的燃料量软测量模型能够较好反映实际燃料量的变化,提高了系统的安全性和可靠性。同时针对煤质时变的现状,通过统计分析56种不同煤质的元素和工业分析结果。发现了低位发热量与理论空气量的关系,及煤质收到基水分和灰分与低位发热量之间的关系,由此提出了两种低位发热量在线校正的方法,以低位发热量的变化表征煤质的变化,优化风煤配比,为性能计算和燃烧优化提供了煤质变化的在线依据。 To guarantee the accuracy and reliability of fuel quantity measurement,a method for soft measurement of fuel quantity is presented based on data fusion.A model for the soft measurement of fuel quantity has been established mainly through an analysis of the measured values relating to fuel quantity and a statistical analysis of on-site operation data.The data from several sensors were processed by using the data fusion technique,effectively enhancing the accuracy of the data from the soft measurement.The model for soft measurement of fuel quantity established through a simulation verification can reflect comparatively well the change in actual fuel quantity,improving the safety and reliability of the whole system.Meanwhile,taking into consideration the status quo of time-related variation of coal quality and through a statistical analysis of the elements and industrial analytic results of 56 kinds of coal,one can find out the relation between the low heat value and theoretical air quantity as well as the relation between the water and ash content in coals on an as received basis on the one hand and the fuel low heat value on the other.Two methods for an on-line calibration of fuel low heat values are thereby presented.With the change in the low heat value representing a change in coal quality,the coal-air ratio can be optimized,thus providing an on-line basis of coal quality changes for performance calculations and combustion optimization.
作者 赵征 刘吉臻 田亮 ZHAO Zheng,LIU Ji-zhen,TIAN Liang(Education Ministry Key Laboratory on Power Plant Equipment Condition Monitoring and Control,North China University of Electric Power,Baoding,China,Post Code: 071003)
出处 《热能动力工程》 EI CAS 北大核心 2007年第1期 42-45,60,共5页 Journal of Engineering for Thermal Energy and Power
基金 国家自然科学基金资助项目(50576022)
关键词 软测量 数据融合 燃料量 低位发热量 soft measurement, data fusion,fuel quantity,low heat value
作者简介 赵征(1978-),女,河北保定人,华北电力大学博士研究生.
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