HU Nanjiang, CHEN Gang, LIAN Kunzhou, et al. PLC-based design of combustion control system for biomass-fired boilers[J]. Thermal power generation, 2015, 44(4): 120-123.
HU Nanjiang, CHEN Gang, LIAN Kunzhou, et al. PLC-based design of combustion control system for biomass-fired boilers[J]. Thermal power generation, 2015, 44(4): 120-123.DOI:
基于PLC的生物质锅炉燃烧控制系统设计
摘要
为了提高生物质锅炉燃烧效率、降低烟气污染
以燃烧控制系统为对象
针对某自备电厂生物质锅炉控制系统应用中存在的鲁棒性差、精度低等问题
通过分析生物质燃烧过程
基于PLC设计了生物质锅炉燃烧控制系统。应用表明
该控制系统的稳定性和调节速度均较好
蒸汽压力最大超调量为0.5%
响应时间为65s。
Abstract
To improve combustion efficiency and reduce flue gas pollution in biomass-fired boilers
the combustion control system was taken as the research object and the problems like poor robustness and low accuracy occurred in a power plant were investigated.Through analyzing the biomass combustion process
a control system using Siemens S7-300 programmable logic controller(PLC)was presented.The practical application shows this control system has good performance in stability and response speed
of which the maximum overshoot of the steam pressure is 0.5%