【英文題名】 Application of Intelligent Algorithm to Bed Temperature-Main Steam Pressure Control of 450t/h CFB Boiler
【作者】 李亮;
【導(dǎo)師】 于希寧;
【學(xué)位授予單位】 華北電力大學(xué)（河北）;
【學(xué)科專業(yè)名稱】 控制理論與控制工程
【論文級(jí)別】 碩士
【網(wǎng)絡(luò)出版投稿人】 華北電力大學(xué)（河北）
【關(guān)鍵詞】 CFB鍋爐; 燃燒系統(tǒng); 智能算法; 解耦控制; 仿真研究;
【英文關(guān)鍵詞】 CFB boiler; firing system; intelligent algorithm; decoupling control; simulation research;
【中文摘要】 循環(huán)流化床(CFB)鍋爐燃燒控制系統(tǒng)是一個(gè)分布參數(shù)、非線性、時(shí)變、大滯后、多變量緊密耦合的被控對(duì)象,燃燒控制難,自動(dòng)投運(yùn)率低,實(shí)際運(yùn)行中主要依靠手動(dòng)控制。本文在分析CFB鍋爐運(yùn)行特性的基礎(chǔ)上,針對(duì)某機(jī)組原控制系統(tǒng)存在問(wèn)題,對(duì)子系統(tǒng)的常規(guī)PID控制方案進(jìn)行改進(jìn),提出負(fù)荷分段控制,結(jié)合實(shí)際運(yùn)行經(jīng)驗(yàn),采用智能算法對(duì)燃燒控制系統(tǒng)的床溫及主蒸汽壓力控制子系統(tǒng)進(jìn)行設(shè)計(jì)、仿真、組態(tài)與調(diào)試,并采用參數(shù)自整定模糊PID多變量解耦控制的思想力求實(shí)現(xiàn)CFB鍋爐床溫-主蒸汽壓力的解耦控制。通過(guò)對(duì)設(shè)計(jì)方案的仿真研究,結(jié)果表明:該設(shè)計(jì)方案具有良好的解耦效果,控制系統(tǒng)的調(diào)節(jié)品質(zhì)令人滿意,并具有良好的魯棒性和抗干擾能力。
【英文摘要】 The combustion control system of CFB boiler is an object that has many features: distributed parameters, nonlinear, time-varying, big lagging and a lot of tightly coupled variables. It is difficult to control and the automation level is low, mainly based on manual control in actual operation. The article analysis the operating characteristics of CFB boiler, in order to solve the problem of primary control system, the regulatory PID control is improved. The load piecewise control is proposed, in conjun...
【DOI】 CNKI:CDMD:2.2008.073342