基于PIC单片机和PID算法的火电厂锅炉全面腐蚀控制方法研究  

Research on Comprehensive Corrosion Control Method for Boilers in Thermal Power Plants Based on PIC Microcontroller and PID Algorithm

作　　者：钱飞强 QIAN Fei-qiang(Guoneng Chenjiagang Power Generation Co.,Ltd.Yancheng 224600,China)

机构地区：[1]国能陈家港发电有限公司,江苏盐城224600

出　　处：《全面腐蚀控制》2025年第3期265-268,共4页Total Corrosion Control

摘　　要：现行方法在火电厂锅炉全面腐蚀控制中应用效果不佳,腐蚀面积比较大且高温腐蚀区域腐蚀指数比较高,无法达到预期的控制效果。因此,提出了基于PIC单片机和PID算法的火电厂锅炉全面腐蚀控制方法。利用PIC单片机采集火电厂锅炉运行氧量、入口烟气量数据,并生成控制指令,驱动控制程序。利用PID算法计算误差(即设定点与实际输出之间的差值)的比例(P)、积分(I)和微分(D)的加权并生成控制信号,调控火电厂锅炉运行氧量、入口烟气量,控制锅炉全面腐蚀。实验证明,应用设计方法后锅炉腐蚀面积不超过0.1cm^(2),高温腐蚀区域的腐蚀指数不超过0.1,在火电厂锅炉全面腐蚀控制领域具有良好的应用前景。Current methods for comprehensive corrosion control in thermal power plant boilers have shown unsatisfactory results,with large corrosion areas and high corrosion indices in high-temperature corrosion zones,failing to achieve the desired control effectiveness.Therefore,a comprehensive corrosion control method for thermal power plant boilers based on PIC microcontroller and PID algorithm is proposed.The PIC microcontroller is used to collect data on the operating oxygen level and inlet flue gas volume of the boiler,and generate control commands to drive the control program.The PID algorithm calculates the error(i.e.,the difference between the setpoint and the actual output)and generates a control signal by weighting the proportional(P),integral(I),and derivative(D)terms,thereby regulating the operating oxygen level and inlet flue gas volume to control boiler corrosion.Experimental results demonstrate that the corrosion area of the boiler does not exceed 0.1 cm^(2),and the corrosion index in hightemperature corrosion zones does not exceed 0.1 after applying the proposed method.This indicates that the method has promising application prospects in the field of comprehensive corrosion control for thermal power plant boilers.

关 键 词：PIC单片机 PID算法 全面腐蚀 运行氧量 入口烟气量 

分 类 号：TK16[动力工程及工程热物理—热能工程]