Pressure Difference Prediction of Air Preheater in Coal-Fired Power Plant Based on BP Neural Network and Support Vector Regression

doi:10.12096/j.2096-4528.pgt.22160

Abstract

CLC Number:

TK 01

Jingcheng SU, Zhiqiang WANG, Jiangjiang QU, Kai ZHANG. Pressure Difference Prediction of Air Preheater in Coal-Fired Power Plant Based on BP Neural Network and Support Vector Regression[J]. Power Generation Technology, 2023, 44(4): 550-556.

Figures/Tables 10

References 23

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变量符号	变量名称	变量符号	变量名称
X₁	锅炉机组负荷	X₁₁	吸收塔原烟气SO₂浓度
X₂	SCR反应器入口NO _x 浓度	X₁₂	吸收塔原烟气O₂浓度
X₃	SCR反应器入口O₂浓度	X₁₃	吸收塔净烟气SO₂浓度折算值
X₄	SCR反应器出口NO _x 浓度	X₁₄	SCR反应器入口温度
X₅	SCR反应器出口O₂浓度	X₁₅	SCR反应器出口温度
X₆	SCR反应器出口烟气流量	X₁₆	一次风机入口温度
X₇	尿素溶液流量	X₁₇	空预器出口热一次风温度
X₈	吸收塔净烟气NO _x 浓度折算值	X₁₈	空预器出口热二次风温度
X₉	吸收塔净烟气O₂浓度	Y₁	空预器进出口压差
X₁₀	空预器出口烟气温度

变量符号	变量名称	变量符号	变量名称
X₁	锅炉机组负荷	X₁₁	吸收塔原烟气SO₂浓度
X₂	SCR反应器入口NO _x 浓度	X₁₂	吸收塔原烟气O₂浓度
X₃	SCR反应器入口O₂浓度	X₁₃	吸收塔净烟气SO₂浓度折算值
X₄	SCR反应器出口NO _x 浓度	X₁₄	SCR反应器入口温度
X₅	SCR反应器出口O₂浓度	X₁₅	SCR反应器出口温度
X₆	SCR反应器出口烟气流量	X₁₆	一次风机入口温度
X₇	尿素溶液流量	X₁₇	空预器出口热一次风温度
X₈	吸收塔净烟气NO _x 浓度折算值	X₁₈	空预器出口热二次风温度
X₉	吸收塔净烟气O₂浓度	Y₁	空预器进出口压差
X₁₀	空预器出口烟气温度

评价指标	BP神经网络	SVR	PSO-BP神经网络
均方误差	0.008 7	0.009 2	0.006 3
训练时间/s	26	43 500	15
相关系数	0.988 18	0.923 36	0.987 69
收敛速度	较快	慢	最快
最优值	局部最优	全局最优	全局最优

评价指标	BP神经网络	SVR	PSO-BP神经网络
均方误差	0.008 7	0.009 2	0.006 3
训练时间/s	26	43 500	15
相关系数	0.988 18	0.923 36	0.987 69
收敛速度	较快	慢	最快
最优值	局部最优	全局最优	全局最优

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Pressure Difference Prediction of Air Preheater in Coal-Fired Power Plant Based on BP Neural Network and Support Vector Regression

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