針對(duì)三臺(tái)30MW 燃煤熱水鍋爐特點(diǎn)，由西門(mén)子S7-300PLC 和工控機(jī)組成三級(jí)DCS 控制系統(tǒng)，并采用了模糊控制、鍋爐熱效率實(shí)時(shí)在線監(jiān)控、風(fēng)煤比自尋優(yōu)算法等先進(jìn)的控制算法，時(shí)間證明系統(tǒng)運(yùn)行穩(wěn)定可靠，實(shí)現(xiàn)了鍋爐的按需供熱，經(jīng)濟(jì)節(jié)能和環(huán)保運(yùn)行。
關(guān)鍵詞 PLC；工控機(jī)；鍋爐熱效率；最佳風(fēng)煤比；經(jīng)濟(jì)燃燒
Abstract Based on the Simatic S7—300 PLC and IPC, a DCS control system of three 30 MW coal boiler is formed．In this control system a Fuzzy controller, an on-line computation method of real time coal boiler thermal efficiency and an adaptive and online automatic control to adjust the ratio of air to coal have been used. This system has stable running effect. Especially, the economic operation of coal boiler are realized.
KeyWords PLC; IPC; boiler thermal efficiency; Optimum air-coal ratio; Economic combustion