3HAC026103-001
3HAC026103-001
3HAC026103-001
3HAC026103-001
為把這一重要的交通工程建成代表首都形象的示范工程，城鐵總公司設(shè)計(jì)了大型電力監(jiān)控及車站環(huán)境控制系統(tǒng)，和利時(shí)公司憑借在監(jiān)控系統(tǒng)、變電站系統(tǒng)、PLC 系統(tǒng)上的綜合實(shí)力，一舉拿下這一國(guó)內(nèi)自動(dòng)化公司在地鐵/輕軌項(xiàng)目上的最大合同。其中和利時(shí)公司PLC產(chǎn)品 承擔(dān)16 個(gè)車站的環(huán)控和全部變電站內(nèi)380V 部分的監(jiān)控及負(fù)荷控制管理，使用量超過(guò)3000 個(gè)模塊，這也是和利時(shí)公司PLC產(chǎn)品 推出以來(lái)獲得的最大訂單，充分體現(xiàn)了用戶對(duì)和利時(shí)公司國(guó)產(chǎn)PLC 系統(tǒng)的信任。
城鐵監(jiān)控系統(tǒng)是一個(gè)分層分布式的網(wǎng)絡(luò)化監(jiān)控系統(tǒng)，和利時(shí)公司PLC產(chǎn)品 在車站內(nèi)通過(guò)以太網(wǎng)和現(xiàn)場(chǎng)總線
（Profibus-DP）把諸如給排水系統(tǒng)、暖通空調(diào)系統(tǒng)、電梯/扶梯系統(tǒng)、照明系統(tǒng)等子系統(tǒng)連接成一個(gè)有機(jī)整體，某些單元裝置采用局部就地控制，而象燈光照明則采用集中控制，所有設(shè)備的運(yùn)行信息都會(huì)聚在車站以太網(wǎng)上傳輸?shù)杰囌揪C控室。車站綜控室內(nèi)設(shè)有操作計(jì)算機(jī)，不僅可以監(jiān)控、記錄、打印本站內(nèi)設(shè)備工作情況，通過(guò)密碼直接操控設(shè)備運(yùn)轉(zhuǎn)，而且還可以向設(shè)在西直門的城鐵調(diào)度中心匯總數(shù)據(jù)，使調(diào)度中心可以監(jiān)控全線的運(yùn)行。
除監(jiān)控系統(tǒng)之外，車站內(nèi)還包括很多子設(shè)備，如風(fēng)機(jī)、電梯、鍋爐等，這些子設(shè)備大多采用PLC 控制。由于和利時(shí)公司PLC產(chǎn)品 系統(tǒng)的通訊能力很強(qiáng)，為使用戶統(tǒng)一備品備件，便于將來(lái)維護(hù)，許多子設(shè)備供應(yīng)商都用和利時(shí)公司PLC產(chǎn)品替代原來(lái)其它品牌的PLC 進(jìn)行控制，以Profibus-DP 通訊協(xié)議接入環(huán)控系統(tǒng)。這樣既省去了傳統(tǒng)以干接點(diǎn)方式接入所需的大量電纜，又可以為環(huán)控系統(tǒng)提供傳統(tǒng)方式提供不了的運(yùn)行信息，如轉(zhuǎn)速、軸溫等。
和利時(shí)公司PLC產(chǎn)品 還承擔(dān)了車站380V 低壓部分的控制，包括備自投、負(fù)荷聯(lián)切和開(kāi)關(guān)控制。在每個(gè)車站內(nèi)分布安裝了5 個(gè)PLC 控制柜，盡量靠近所控制的設(shè)備，每套PLC 都帶Profibus-DP 從站接口，通過(guò)敷設(shè)在上下站臺(tái)之間的通訊電纜與中控室內(nèi)電力監(jiān)控通訊控制器相連。5 套PLC 各自承擔(dān)不同的功能，在出現(xiàn)意外情況時(shí)，彼此之間可以通過(guò)Profibus-DP 總線傳遞動(dòng)作指令。如當(dāng)供電母線故障而導(dǎo)致備自投動(dòng)作時(shí)，安裝在380V 開(kāi)關(guān)柜上的PLC 會(huì)及時(shí)通知站廳配電室內(nèi)的PLC 切除所有三級(jí)負(fù)荷。
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