西門子現(xiàn)場(chǎng)總線在電廠輸煤控制系統(tǒng)的應(yīng)用(已修改)
2025-07-19 16:03 本頁面
【正文】 摘 要PROFIBUS現(xiàn)場(chǎng)總線技術(shù)是隨著數(shù)字信號(hào)系統(tǒng)的發(fā)展而產(chǎn)生的,它是世界上第一個(gè)開放式現(xiàn)場(chǎng)總線標(biāo)準(zhǔn)，其應(yīng)用領(lǐng)域覆蓋了從機(jī)械加工、過程控制、電力、交通到樓宇自動(dòng)化的各個(gè)領(lǐng)域。PROFIBUSDP是一種經(jīng)過優(yōu)化的模塊，有比較高的數(shù)據(jù)傳輸率，適用于系統(tǒng)和外部設(shè)備之間的通信，遠(yuǎn)程I/O系統(tǒng)尤為適合。它允許高速度周期性的小批量數(shù)據(jù)通信，適用于對(duì)時(shí)間要求比較高的自動(dòng)化場(chǎng)合。本設(shè)計(jì)是應(yīng)用西門子現(xiàn)場(chǎng)總線對(duì)電廠輸煤系統(tǒng)的改造， 電廠輸煤系統(tǒng)是火電廠電力生產(chǎn)的重要生產(chǎn)過程?；鹆Πl(fā)電廠輸煤系統(tǒng)的工藝設(shè)備布置具有高度分散性，鍋爐的單爐單磨燃煤的計(jì)量準(zhǔn)確問題一直是影響電廠發(fā)電成本正平衡統(tǒng)計(jì)的頑癥，更是燃煤發(fā)熱量和鍋爐燃燒效率統(tǒng)計(jì)計(jì)算尚無法解決的棘手問題。而現(xiàn)場(chǎng)總線技術(shù)對(duì)于高度分散性、電磁干擾大的設(shè)備有其獨(dú)特的優(yōu)勢(shì)，因而輸煤系統(tǒng)可以采用將DCS 遠(yuǎn)程I/0 總線模式與智能通訊模塊總線模式相結(jié)合的控制方式，技術(shù)先進(jìn)，提高了輸煤系統(tǒng)控制水平。本設(shè)計(jì)分兩步對(duì)該項(xiàng)目進(jìn)行改造，先期進(jìn)行輸煤控制系統(tǒng)的改造，而后進(jìn)行輸煤和入爐煤軟測(cè)量的改造．以期最終達(dá)到單爐瞬時(shí)燃料計(jì)量及動(dòng)態(tài)生產(chǎn)成本核算的目的。關(guān)鍵詞 輸煤系統(tǒng)，PCS，PROFIBUSDP37 / 40ABSTRACT PROFIBUS field bus technology is with the development of the digital signal system, it is the world39。s first open field bus standard, its application field covers from mechanical processing, process control, electric power, traffic to building automation fields. PROFIBUSDP is an optimized module, have higher data transfer rate, applied to the munication between system and external equipment, especially suitable for the remote I/O system. It allows high speed periodic small batch data munication, suitable for high automation demands on time. This design is the application of Siemens field bus in power plant coal conveying system, power plant coal conveying system is the important process of the electric power production in power plants. Thermal power plant coal conveying system of process equipment layout is highly decentralized, single furnace boiler problem of accurate measurement of single grinding of coal has been affect the cost of power generation is equilibrium statistical problems, especially coal calorific value and statistical calculation of boiler bustion efficiency is still unable to solve intractable problems. And field bus technology for highly decentralized, electromagnetic interference, big equipment has its unique advantages, thus conveying system can be used with the DCS remote I / 0 bus mode of intelligent munication module bus pattern with the bination of control mode, advanced technology, improve the level of the coal conveying control system. This design for the project in two steps, first coal conveying control system renovation, and then the soft measurement of the coal and coal into the furnace. In order to ultimately achieve instantaneous single furnace fuel metering and dynamic production cost accounting purpose.Keywords Coal handling system,PCS,ProfibusDP目 錄摘 要 IABSTRACT II1 緒論 22 輸煤段工藝及控制要求 3 3 3 4 4 53 ProfibusDP協(xié)議 6 ProfibusDP的基本功能 6 ProfibusDP的通信原理 8 電子設(shè)備數(shù)據(jù)文件(GSD) 8 ProfibusDP的技術(shù)優(yōu)勢(shì) 94 系統(tǒng)的網(wǎng)絡(luò)結(jié)構(gòu) 10 SIMATIC PCS 7系統(tǒng)概述 10 SIMASTIC PCS 7結(jié)構(gòu)圖 105 系統(tǒng)硬件及功能配置 12 12 模塊的選擇 13 程序設(shè)計(jì) 13 14 通訊設(shè)置 16 S7300與S7200的EM277之間的ProfibusDP通訊 186 上位機(jī)監(jiān)控軟件的研究與設(shè)計(jì) 25 WINCC組態(tài)軟件的功能和特點(diǎn) 25 利用組態(tài)軟件WinCC設(shè)計(jì)系統(tǒng)監(jiān)控界面 25結(jié) 論 36參考文獻(xiàn) 37致 謝 381 緒論 在電廠輸煤系統(tǒng)中，輸煤的特點(diǎn)是工藝線路很長(zhǎng)、設(shè)備數(shù)量多、系統(tǒng)跨度大而且布置分散、設(shè)備多采用強(qiáng)電控制、燃料敞露運(yùn)輸、電纜用的數(shù)量較大、運(yùn)行的環(huán)境惡劣、電磁對(duì)設(shè)備干擾大、設(shè)備間工藝聯(lián)鎖關(guān)系比較復(fù)雜。隨著總線技術(shù)的發(fā)展，遵循現(xiàn)場(chǎng)總線通訊協(xié)議DCS 順序控制的系統(tǒng)顯示出越來越大的優(yōu)勢(shì)。目前國(guó)內(nèi)外現(xiàn)場(chǎng)總線技術(shù)的應(yīng)用，可分為兩類，一種是DCS 遠(yuǎn)程 I/O 通訊采用現(xiàn)場(chǎng)總線標(biāo)準(zhǔn)的協(xié)議技術(shù)的應(yīng)用，國(guó)內(nèi)工程已經(jīng)有經(jīng)驗(yàn)；第二種是現(xiàn)場(chǎng)總線技術(shù)標(biāo)準(zhǔn)的智能現(xiàn)場(chǎng)設(shè)備中植入具有控制器功能的控制模塊，并且以符合某種現(xiàn)場(chǎng)總線協(xié)議標(biāo)準(zhǔn)的通訊方式與DCS 相聯(lián)接的現(xiàn)場(chǎng)總線控制系統(tǒng)。在電廠輸煤系統(tǒng)中，輸煤系統(tǒng)的工藝設(shè)備的布置具高度分散性，而現(xiàn)場(chǎng)總線技術(shù)對(duì)于電磁干擾大、高度分散性的設(shè)備有其獨(dú)特的優(yōu)勢(shì)，因此輸煤系統(tǒng)采用將DCS 遠(yuǎn)程I/0 總線模式與智能通訊模塊總線模式相結(jié)合的控制方式，技術(shù)比較先進(jìn)，進(jìn)一步提高了輸煤系統(tǒng)控制水平。2 輸煤段工藝及控制要求 各工藝段所包含的設(shè)備由輸煤皮帶機(jī)、葉輪給煤機(jī)、往復(fù)式給煤機(jī)、碎煤機(jī)，滾軸篩帶式除鐵器、圓盤除鐵器、精細(xì)除鐵器、犁煤器、切換擋板拉繩開關(guān)
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