基于模糊物元模型的中速磨煤机运行状态评价
|
摘要
针对某机组RP型中速磨煤机运行状态,以煤粉细度、磨煤机出力、磨煤机电流和分离器出口温度为评价指标,利用模糊物元理论结合欧氏贴近度原理,构造出欧氏贴近度复合模糊物元,建立磨煤机运行状态评价的模糊物元模型,采用层次分析法(AHP)确定各评价指标的权重系数,对磨煤机运行状态进行定量和定性评价。在某300MW机组锅炉的RP903X型中速磨煤机上的实际应用结果表明,该模型可快速、有效地对RP型中速磨煤机的运行状态进行合理评价,提高了机组运行的安全性和稳定性。
By taking a RP medium-speed coal pulverizer as the research object,the status evaluation model for medium-speed coal pulverizers was established.According to running state of the RP medium-speed pulverizer,such factors as the coal fineness,the pulverizer capacity and current,and the separator outlet temperature were regarded as the evaluation indices.The fuzzy matter element theory and the Euclid approach degree principle were applied to construct the Euclid approach degree composite fuzzy matter element.Then the fuzzy matter element model for operation status evaluation of coal pulverizers was established.The analytic hierarchy process(AHP) method was employed to determine the weight coefficient of each evaluation index,and to evaluate running state of the coal pulverizer quantitatively and qualitatively.The new model was verified on the RP903X medium-speed coal pulverizer for a 300 MW unit boiler and the results showed that,this model can make a reasonable evaluation for running state of the RP medium-speed coal pulverizer rapidly and effectively,which enhanced the safety and stability of the unit operation.
By taking a RP medium-speed coal pulverizer as the research object,the status evaluation model for medium-speed coal pulverizers was established.According to running state of the RP medium-speed pulverizer,such factors as the coal fineness,the pulverizer capacity and current,and the separator outlet temperature were regarded as the evaluation indices.The fuzzy matter element theory and the Euclid approach degree principle were applied to construct the Euclid approach degree composite fuzzy matter element.Then the fuzzy matter element model for operation status evaluation of coal pulverizers was established.The analytic hierarchy process(AHP) method was employed to determine the weight coefficient of each evaluation index,and to evaluate running state of the coal pulverizer quantitatively and qualitatively.The new model was verified on the RP903X medium-speed coal pulverizer for a 300 MW unit boiler and the results showed that,this model can make a reasonable evaluation for running state of the RP medium-speed coal pulverizer rapidly and effectively,which enhanced the safety and stability of the unit operation.
引文
[1]李文华,杨建国,崔福兴,等.提高中速磨煤机出口温度对锅炉运行的影响[J].中国电力,2010(10):27-30.LI Wenhua,YANG Jianguo,CUI Fuxing,et al.Influ-ence of improving medium-speed pulverizer outlet tem-perature on the operation of boiler[J].Electric Power,2010(10):27-30.
[2]金文,陈长征,金志浩,等.燃气轮发电机组多故障诊断的物元分析方法[J].中国电机工程学报,2007,27(17):57-60.JIN Wen,CHEN Changzheng,JIN Zhihao,et al.Mat-ter-element Analysis method of multiple fault diagnosis for gas turbines[J].Proceedings of the CSEE,2007,27(17):57-60.
[3]杨丽徙,于发威,包毅.基于物元理论的变压器绝缘状态分级评估[J].电力自动化设备,2010,30(6):55-59.YANG Lixi,YU Fawei,BAO Yi.Classification evalua-tion of transformer insulation condition based on mat-ter-element theory[J].Electric Power Automation E-quipment,2010,30(6):55-59.
[4]张翠珍,杨茉,卢玫,等.基于混合层次分析法的加热炉余热利用综合评价[J].热力发电,2010(11):22-26.YANG Cuizhen,YANG Mo,LU Mei,et al.Compre-hensive evaluation of residual heat utilization for heat-ing furnace based on mixed hierarchical analysis meth-od[J].Thermal Power Generation,2010(11):22-26.
[5]周栋,乔宗良,冯利法,等.基于模糊物元模型的凝汽器运行状态评价[J].华东电力,2009(8):1408-1411.ZHOU Dong,QIAO Zongliang,FENG Lifa,et al.As-sessment of the operation status of condenser based on fuzzy matter element model[J].East China Electric Power,2009(8):1408-1411.
[2]金文,陈长征,金志浩,等.燃气轮发电机组多故障诊断的物元分析方法[J].中国电机工程学报,2007,27(17):57-60.JIN Wen,CHEN Changzheng,JIN Zhihao,et al.Mat-ter-element Analysis method of multiple fault diagnosis for gas turbines[J].Proceedings of the CSEE,2007,27(17):57-60.
[3]杨丽徙,于发威,包毅.基于物元理论的变压器绝缘状态分级评估[J].电力自动化设备,2010,30(6):55-59.YANG Lixi,YU Fawei,BAO Yi.Classification evalua-tion of transformer insulation condition based on mat-ter-element theory[J].Electric Power Automation E-quipment,2010,30(6):55-59.
[4]张翠珍,杨茉,卢玫,等.基于混合层次分析法的加热炉余热利用综合评价[J].热力发电,2010(11):22-26.YANG Cuizhen,YANG Mo,LU Mei,et al.Compre-hensive evaluation of residual heat utilization for heat-ing furnace based on mixed hierarchical analysis meth-od[J].Thermal Power Generation,2010(11):22-26.
[5]周栋,乔宗良,冯利法,等.基于模糊物元模型的凝汽器运行状态评价[J].华东电力,2009(8):1408-1411.ZHOU Dong,QIAO Zongliang,FENG Lifa,et al.As-sessment of the operation status of condenser based on fuzzy matter element model[J].East China Electric Power,2009(8):1408-1411.