6ES72784BD320XB0
6ES72784BD320XB0
6ES72784BD320XB0
6ES72784BD320XB0
變頻調(diào)速由安裝在鍋爐操作臺(tái)上的啟動(dòng)、停機(jī)、轉(zhuǎn)速調(diào)整開關(guān)進(jìn)行遠(yuǎn)程控制,并可同DCS系統(tǒng)接口,通過(guò)DCS實(shí)現(xiàn)變頻器的調(diào)速控制,變頻調(diào)速裝置還提供報(bào)警指示、故障指示、待機(jī)狀態(tài)、運(yùn)行狀態(tài)、旁路狀態(tài)、高壓合閘允許、高壓緊急分?jǐn)嗟缺Wo(hù)信息以及轉(zhuǎn)速給定值和風(fēng)機(jī)實(shí)際轉(zhuǎn)速值等必要指示,以便操作人員進(jìn)行操作控制。
設(shè)備從2003年4月24日到貨至4月28日安裝調(diào)試結(jié)束,總共4天時(shí)間,還進(jìn)行了一系列的動(dòng)態(tài)試驗(yàn),如:變頻器50Hz滿載運(yùn)行試驗(yàn)、電機(jī)—風(fēng)機(jī)系統(tǒng)臨界振動(dòng)實(shí)驗(yàn)、母線電壓波動(dòng)試驗(yàn)、變頻器與高壓開關(guān)的聯(lián)鎖試驗(yàn)、連續(xù)快速增減負(fù)荷試驗(yàn)等,一切正常后,再進(jìn)行連續(xù)的72小時(shí)試運(yùn)行,至5月1日投入正常工作運(yùn)行,設(shè)備運(yùn)行至今一切正常,沒(méi)有發(fā)生過(guò)任何異常情況。
在變頻器改造以前,根據(jù)統(tǒng)計(jì)情況,鍋爐引風(fēng)機(jī)的運(yùn)行工頻電流在25A左右,通過(guò)變頻器調(diào)節(jié)裝置改造后,目前在鍋爐相同運(yùn)行情況下,鍋爐引風(fēng)機(jī)在變頻后的電流為9—10A左右,平均降低電流達(dá)到15—16A。根據(jù)計(jì)算,平均節(jié)電128—136wh/h ,考慮裝置自耗電及將來(lái)空調(diào)用電16kwh/h,總體節(jié)電可達(dá)到112—120 kwh/h,節(jié)電率達(dá)到53%—56%,經(jīng)濟(jì)效益相當(dāng)顯著。因此,鍋爐引風(fēng)機(jī)高壓變頻器節(jié)能技術(shù)改造項(xiàng)目是相當(dāng)成功的,我公司將進(jìn)一步計(jì)劃對(duì)其它鍋爐引風(fēng)機(jī)也進(jìn)行變頻器調(diào)節(jié)裝置改造,以取得更大經(jīng)濟(jì)效益。
3 補(bǔ)水泵電機(jī)應(yīng)用變頻器進(jìn)行補(bǔ)水調(diào)節(jié)控制
我公司熱電廠日消耗水量約6000—7000噸,主要用于凈化水處理、工業(yè)用水和生活用水,泵房共有補(bǔ)水泵三臺(tái),其電動(dòng)機(jī)的技術(shù)參數(shù)分別為:
一方面,3#泵出力太小,不能滿足日耗水需要,而1#、2#泵的出力又太大,水泵不好控制和調(diào)節(jié),使得電機(jī)啟停過(guò)于頻繁。另一方面,從凈水器的凈水效果來(lái)看,最理想的凈化方法應(yīng)該是保持一定水量進(jìn)行連續(xù)供水,這樣凈水效率高,效果也好。如果水泵經(jīng)常啟動(dòng)、停止,易造成斷水的嚴(yán)重后果。
Power One 電源
相關(guān)型號(hào)
Power One
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