【正文】 make the control function modular firstly, and then designed each module control process, bined the modules anic finally in order to realize the synthetic automatic control function. In this pointtopoint control system, the PLC can acplish the function which including automatic start and stop the generator, the frequency and load regulation, and treatment of machine or electric fault, etc. The upper puter realized automatic paralleling, disengaging, and asking overload, etc. Meanwhile HumanMachine Interaction can display and record the generators state and various parameters. This distribution control system fully embodies the advantages of distributed control and central management. Key Words: Ship Power Station, Automatic Control System, PLC III 目 錄 前 言 ........................................................................................................................................ 1 1 課題的組成及背景 ................................................................................................................ 3 船舶電站自動化系統(tǒng)的定義、組成和特點 ............................................................. 3 船舶電站自動化的發(fā)展與展望 ................................................................................. 3 PLC 在船舶電站自動化系統(tǒng)中的應(yīng)用 ...................................................................... 4 PLC 概述 .......................................................................................................... 4 PLC 的工作原理 .............................................................................................. 5 PLC 在船舶電站自動化系統(tǒng)中應(yīng)用的優(yōu)勢 ................................................. 5 本課題背景及選題意義 ............................................................................................. 5 本文的主要內(nèi)容和結(jié)構(gòu)安排 ..................................................................................... 6 2 船舶電站自動化管理系統(tǒng) .................................................................................................... 7 船舶電站自動化管理系統(tǒng)的總體構(gòu)成 ..................................................................... 7 船舶電站自動化管理系統(tǒng)主要功能 ......................................................................... 7 集散式船舶電站管理系統(tǒng) ......................................................................................... 9 集散式電站 ...................................................................................................... 9 信號的采集及處理 ........................................................................................ 10 檢測單元的設(shè)計 .............................................................................................11 3 集散式船舶電站管理系統(tǒng)的功能流程 .............................................................................. 13 機組的自動起動模塊及流程圖 ............................................................................... 13 并車運行模塊及流程圖 ........................................................................................... 14 調(diào)頻調(diào)載模塊及流程圖 ........................................................................................... 17 重載詢問模塊及流程圖 ........................................................................................... 18 自動解列和自動停機模塊及流程圖 ....................................................................... 19 電力管理系統(tǒng)參數(shù)在線監(jiān)視與在線修改 ............................................................... 20 OP393 的連接與登錄 ..................................................................................... 22 定時器的在線監(jiān)視與在線修改 .................................................................... 23 數(shù)據(jù)塊的在線監(jiān)視與在線修改 .................................................................... 25 船舶電站管理系統(tǒng)的監(jiān)控單元設(shè)計 ....................................................................... 26 上位機監(jiān)控系統(tǒng)功能 .................................................................................... 26 工業(yè) PC 機控制軟件和監(jiān)測軟件結(jié)構(gòu) ......................................................... 27 監(jiān)控界面簡介 ................................................................................................ 28 安全保護系統(tǒng) ........................................................................................................... 29 IV 欠壓保護 ........................................................................................................ 29 過流保護 ........................................................................................................ 29 逆功率保護 .................................................................................................... 29 故障報警的設(shè)置 ............................................................................................ 30 4 系統(tǒng)聯(lián)調(diào)與測試 .................................................................................................................. 31 系統(tǒng)仿真 ................................................................................................................... 31 系統(tǒng)調(diào)試 ................................................................................................................... 32 總 結(jié) ...................................................................................................................................... 33 致 謝 ...................................................................................................................................... 34 參考文獻 .................................................................................................................................. 35 附 錄 ...................................................................................................................................... 36 山東交通學(xué)院畢業(yè)設(shè)計 (論文 ) 1 前 言 為實現(xiàn)船 舶電站自動化的各種功能，船舶電站自動化技術(shù)經(jīng)歷了由繼電器、接觸器組成的有觸點控制系統(tǒng)到有分立元件和集成元件組成的無觸點控制系統(tǒng)。同時，上位機的人機界面可以顯示、記錄機組的運行狀態(tài)和主要參數(shù)。本文將電站的控制功能模塊化，再設(shè)計出各模塊的流程，然后將各模塊有機的結(jié)合，以 實現(xiàn)電站的綜合自動控制。 論文作者 (簽字 )： 日期： 年 月 I 摘 要 本文以兩臺發(fā)電機組的船舶電站為例，在論述自動化電站功能和要求的基礎(chǔ)上，設(shè)計了集散控制式系統(tǒng)。 山東交通學(xué)院 畢業(yè)生畢業(yè)論文（設(shè)計）