描述

DSQC658 3HAC025779-001

機(jī)組整套啟動(dòng)時(shí)從鍋爐點(diǎn)火至發(fā)電機(jī)并網(wǎng)帶初始負(fù)荷夠?qū)崿F(xiàn)全過(guò)程的自動(dòng)程序控制。(當(dāng)然可以設(shè)有限幾個(gè)斷點(diǎn)人工分析判斷決定后介入操作)，或機(jī)組停機(jī)時(shí)DCS能安全停機(jī)。
機(jī)組自啟?？刂频囊笫牵?br /> 機(jī)組正常起動(dòng)時(shí)，當(dāng)發(fā)電機(jī)達(dá)到額定轉(zhuǎn)速時(shí)，DCS將投入AVR。當(dāng)發(fā)電機(jī)電壓達(dá)到額定值時(shí)，DCS將投入同期裝置。發(fā)電機(jī)與電網(wǎng)的同期是由同期裝置自動(dòng)實(shí)現(xiàn)，在同期過(guò)程中通過(guò)DCS控制AVR、DEH，當(dāng)同期條件滿足時(shí)，向發(fā)電機(jī)斷路器發(fā)合閘指令。在同期合閘成功，發(fā)電機(jī)電負(fù)荷達(dá)到一定值之后，DCS將高壓廠用電系統(tǒng)快速?gòu)膯渥兦袚Q到高壓廠變上。
機(jī)組正常停機(jī)時(shí)，DCS控制降低機(jī)組負(fù)荷，當(dāng)機(jī)組負(fù)荷降到某一定值時(shí)，DCS將高壓廠用電系統(tǒng)快速切換到啟／備變系統(tǒng)供電；當(dāng)機(jī)組負(fù)荷繼續(xù)降到零，跳開(kāi)主開(kāi)關(guān)，聯(lián)跳汽輪機(jī)(主汽門(mén)關(guān)閉)，發(fā)電機(jī)滅磁。
對(duì)于廠用電源系統(tǒng)控制的要求是：
在機(jī)組啟動(dòng)時(shí)通過(guò)啟／備變向廠用負(fù)荷供電；在機(jī)組正常用電時(shí)，由廠變供電并經(jīng)低壓廠變向400VMCC低壓負(fù)荷供電以啟動(dòng)機(jī)組所必需的輔機(jī)；在廠用電消失時(shí)，為了保護(hù)設(shè)備和系統(tǒng)的安全，廠用電快切裝置應(yīng)快速將廠用工作負(fù)荷自動(dòng)切換至啟／備變；當(dāng)確認(rèn)保安段母線失壓后，應(yīng)啟動(dòng)事故備用柴油機(jī)供電以保證設(shè)備安全。
依據(jù)以上控制水平的要求，電氣監(jiān)控納入DCS技術(shù)的要求是：
（1）發(fā)電機(jī)系統(tǒng)能實(shí)現(xiàn)程序控制和軟手操控制使發(fā)電機(jī)由零起升速、升壓直到并網(wǎng)帶初始負(fù)荷。
（2）廠用電系統(tǒng)能按啟動(dòng)／停止階段和正常運(yùn)行階段的要求程序控制和軟手操來(lái)實(shí)現(xiàn)。
（3）能實(shí)時(shí)顯示和記錄上述發(fā)變組系統(tǒng)和廠用電系統(tǒng)的正常運(yùn)行、異常運(yùn)行和事故狀態(tài)下的各種數(shù)據(jù)和狀態(tài)，并提供操作指導(dǎo)和應(yīng)急處理措施。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢(shì)價(jià)格，大量現(xiàn)貨。

主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門(mén)子，摩托羅拉，安川。力士樂(lè)。ACSO，橫河等進(jìn)口品牌。Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA

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