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UPS電源和EPS電源的區別

2020/5/18 9:24:11??????點擊:
      隨著經(jing)濟(ji)的(de)發(fa)(fa)展(zhan)和社會安全意識(shi)的(de)加強,消防安全越來(lai)越被人們重視。EPS以其(qi)特有(you)的(de)優越性得到(dao)廣泛(fan)的(de)應用。同時,許多企(qi)業(ye)紛(fen)紛(fen)建(jian)立企(qi)業(ye)內部(bu)局域網,網絡(luo)化辦公正(zheng)逐(zhu)漸成為(wei)一種趨(qu)勢(shi),UPS不(bu)間斷電源產業(ye)也得到(dao)了(le)廣闊的(de)發(fa)(fa)展(zhan),其(qi)中,生產應急電源的(de)企(qi)業(ye)在(zai)近(jin)十(shi)幾年中迅速增加。

  為了適應應急電源(yuan)迅速發展的(de)需要,國(guo)家相關部門(men)也陸續出(chu)臺了諸如《消防應急燈具》(GB17945-2000)、《不間斷電源(yuan)設(she)(she)備》(GB/T7260-187)、《信(xin)息技(ji)術設(she)(she)備用(yong)不間斷電源(yuan)通用(yong)技(ji)術條件(jian)》(GB/T14715-1993)、《低壓直流電源(yuan)設(she)(she)備的(de)特性和安全要求》(GB/T17478-1998)等(deng)相關標準。

  然而(er),應急電源設計(ji)與使(shi)用對電氣工程師而(er)言(yan)還是一種比較新的(de)(de)技術,很多工程師對EPS和UPS的(de)(de)區別(bie)與聯系并(bing)不清楚(chu)。將對UPS和EPS電源的(de)(de)區別(bie)進行介紹。

  EPS電源簡介

  EPS(EmergencySystem)是一種允許短時電(dian)(dian)(dian)(dian)源中斷的(de)(de)應急(ji)電(dian)(dian)(dian)(dian)源裝置(zhi),主(zhu)要(yao)針(zhen)對城市中高(gao)層建筑中的(de)(de)應急(ji)照明、消(xiao)防設(she)施以及(ji)特別重要(yao)負荷,尤(you)其(qi)在解(jie)決照明用電(dian)(dian)(dian)(dian)或(huo)只有(you)一路市電(dian)(dian)(dian)(dian)缺少(shao)第(di)二路電(dian)(dian)(dian)(dian)源,代替發電(dian)(dian)(dian)(dian)機組構(gou)成第(di)二電(dian)(dian)(dian)(dian)源或(huo)在需要(yao)第(di)三電(dian)(dian)(dian)(dian)源的(de)(de)場合使(shi)用時,能夠收到非(fei)常好(hao)的(de)(de)效果。EPS電(dian)(dian)(dian)(dian)源裝置(zhi)在供電(dian)(dian)(dian)(dian)網絡(luo)正常供電(dian)(dian)(dian)(dian)時,其(qi)應急(ji)供電(dian)(dian)(dian)(dian)系統處于(yu)“睡(shui)眠”的(de)(de)充電(dian)(dian)(dian)(dian)浮狀態,只有(you)在應急(ji)狀態下才(cai)為負載供電(dian)(dian)(dian)(dian)。

  EPS電(dian)(dian)(dian)(dian)源的(de)特點:當電(dian)(dian)(dian)(dian)網有(you)電(dian)(dian)(dian)(dian)時(shi)(shi),EPS處于(yu)靜態,無(wu)噪音。有(you)市(shi)(shi)電(dian)(dian)(dian)(dian)時(shi)(shi),噪音小于(yu)60db,不需排煙、防震處理(li),而且無(wu)公(gong)害、無(wu)火災隱患(huan);市(shi)(shi)電(dian)(dian)(dian)(dian)斷(duan)電(dian)(dian)(dian)(dian),EPS可(ke)自(zi)動切換,實現無(wu)人(ren)值守(shou)。電(dian)(dian)(dian)(dian)網供電(dian)(dian)(dian)(dian)與(yu)EPS電(dian)(dian)(dian)(dian)源供電(dian)(dian)(dian)(dian)相互切換的(de)時(shi)(shi)間均為0.1~0.25s。其帶載(zai)能(neng)力強,適用于(yu)電(dian)(dian)(dian)(dian)感性、電(dian)(dian)(dian)(dian)容性及(ji)綜(zong)合性負(fu)載(zai)的(de)設備(bei),如(ru)電(dian)(dian)(dian)(dian)梯、水泵、風機、辦公(gong)自(zi)動化設備(bei)、應急照明等(deng),而且使用可(ke)靠。

  由于EPS在市電(dian)正常時處于“睡眠”狀態,只有(you)市電(dian)斷電(dian)EPS才正式(shi)投入工作(zuo),所以主(zhu)機壽命(ming)很長,某些廠家生產的(de)EPS電(dian)源(yuan)壽命(ming)可達20年以上(shang)。EPS可以適應惡(e)劣的(de)環境,如地下室、配電(dian)室甚(shen)至建筑豎井(jing),也(ye)可以緊靠應急負荷使用場所就地設置,減少供電(dian)線路。

  對于(yu)某些功(gong)率(lv)教大的用電(dian)(dian)設(she)施,如:消防水泵、風機(ji),EPS可直接與電(dian)(dian)機(ji)相連變頻啟動后,再進入正常運行狀態,省去電(dian)(dian)機(ji)的軟啟動和控制箱(xiang)等設(she)置(zhi)。標準(zhun)型EPS應(ying)(ying)急(ji)電(dian)(dian)源(yuan)應(ying)(ying)急(ji)時(shi)間為1h(有延時(shi)接口),可長可短,應(ying)(ying)用范圍廣泛。綜上所(suo)述,EPS應(ying)(ying)急(ji)電(dian)(dian)源(yuan)是(shi)一種可靠的綠色應(ying)(ying)急(ji)供電(dian)(dian)電(dian)(dian)源(yuan),它非常適用于(yu)高層建筑消防設(she)施沒有第二路(lu)市(shi)電(dian)(dian),又(you)不便(bian)使用柴油(you)發(fa)電(dian)(dian)機(ji)組的場合(he)。

  使(shi)用EPS應(ying)急(ji)電(dian)(dian)(dian)(dian)源(yuan)(yuan)既可(ke)(ke)以滿足規范要求,又節省了人力、物力。同時,EPS電(dian)(dian)(dian)(dian)源(yuan)(yuan)也適用于一些(xie)工程中的局部重(zhong)要場合,作為(wei)末端(duan)應(ying)急(ji)備用電(dian)(dian)(dian)(dian)源(yuan)(yuan)。EPS電(dian)(dian)(dian)(dian)源(yuan)(yuan)作為(wei)一種(zhong)可(ke)(ke)靠的應(ying)急(ji)供(gong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源(yuan)(yuan),可(ke)(ke)以靈活(huo)地運用于消防供(gong)電(dian)(dian)(dian)(dian)回路末端(duan)、個別重(zhong)要場合。EPS應(ying)急(ji)電(dian)(dian)(dian)(dian)源(yuan)(yuan)的使(shi)用,為(wei)消防安全提供(gong)了更(geng)有力的保障。

  UPS電源簡介
  UPS(UninterruptiblePowerSystem)不間斷電源,是一種含有儲能裝置,以逆變器為主要組成部分的恒壓、恒頻的不間斷電源。其主要作用是通過UPS系統,對計算機網絡系統或其他電力電子設備可靠而不間斷地進行供電。


  當(dang)(dang)市電(dian)輸入正(zheng)常時(shi),UPS將市電(dian)穩壓后供(gong)給負載使(shi)用,此(ci)時(shi),UPS的作(zuo)用相當(dang)(dang)于一臺交(jiao)(jiao)流市電(dian)穩壓器,同時(shi)它還向機內儲(chu)(chu)能部分供(gong)電(dian)。當(dang)(dang)市電(dian)中斷(事(shi)(shi)故停電(dian))時(shi),UPS立即將機內存儲(chu)(chu)的電(dian)能通過(guo)逆變轉(zhuan)換的方法向負載繼續供(gong)應220V交(jiao)(jiao)流電(dian),使(shi)負載維持正(zheng)常工作(zuo)并保護負載軟(ruan)、硬(ying)件(jian)不(bu)受損壞,使(shi)整(zheng)個(ge)網(wang)絡數據不(bu)會因斷電(dian)事(shi)(shi)故而導致數據丟失。電(dian)源按其工作(zuo)原理可分為后備式、在線式以及在線互(hu)動式三種。

  后備式(shi)UPS:平時處于(yu)蓄電(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)狀態,在停電(dian)(dian)(dian)時逆變器緊急切換到工作(zuo)狀態,將(jiang)電(dian)(dian)(dian)池(chi)提供(gong)的直(zhi)流電(dian)(dian)(dian)轉變為穩定的交流電(dian)(dian)(dian)輸出,后備式(shi)UPS也被稱為離線式(shi)UPS。后備式(shi)UPS電(dian)(dian)(dian)源(yuan)的優點是:運(yun)行效率高、噪音低(di)、價(jia)格相對便宜(yi),主要(yao)適用于(yu)市電(dian)(dian)(dian)波(bo)動小,對供(gong)電(dian)(dian)(dian)質(zhi)量要(yao)求(qiu)低(di)的場合,比較適合家庭使用。

  然而(er)這種UPS的(de)(de)切換(huan)(huan)時(shi)間很短,一(yi)般(ban)(ban)介于2~10ms,而(er)計算機本身的(de)(de)交換(huan)(huan)式電(dian)源供應器在(zai)(zai)斷(duan)電(dian)時(shi)可維持10ms左右,所以(yi)個人(ren)計算機系統一(yi)般(ban)(ban)不(bu)會因為這個切換(huan)(huan)時(shi)間而(er)出(chu)現問題。因此不(bu)適(shi)合用(yong)在(zai)(zai)關鍵性的(de)(de),供電(dian)不(bu)能(neng)中斷(duan)的(de)(de)場所。后(hou)備式UPS一(yi)般(ban)(ban)只能(neng)持續供電(dian)幾(ji)分(fen)鐘(zhong)(zhong)到幾(ji)十分(fen)鐘(zhong)(zhong),主要是讓您(nin)有時(shi)間備份數據,并盡(jin)快(kuai)結束手頭工作,其價格也比(bi)較低,比(bi)如(ru)個人(ren)家(jia)庭用(yong)戶,就(jiu)可配備小功率的(de)(de)后(hou)備式UPS。

  在線(xian)式UPS:這種UPS一(yi)直(zhi)使(shi)其逆(ni)(ni)變器(qi)處于工(gong)作狀(zhuang)態,首先通(tong)過(guo)電(dian)路將(jiang)外部交流(liu)(liu)電(dian)轉(zhuan)變為(wei)直(zhi)流(liu)(liu)電(dian),再通(tong)過(guo)高(gao)質量的逆(ni)(ni)變器(qi)將(jiang)直(zhi)流(liu)(liu)電(dian)轉(zhuan)換(huan)為(wei)高(gao)質量的正弦波(bo)交流(liu)(liu)電(dian)輸出給(gei)計(ji)算機。在線(xian)式UPS在供電(dian)狀(zhuang)況下的主要(yao)功能是穩壓及防止(zhi)電(dian)波(bo)干擾(rao)。停電(dian)時(shi)則使(shi)用(yong)(yong)備用(yong)(yong)直(zhi)流(liu)(liu)電(dian)源(蓄電(dian)池組(zu))給(gei)逆(ni)(ni)變器(qi)供電(dian)。由于逆(ni)(ni)變器(qi)一(yi)直(zhi)在工(gong)作,不存在切(qie)換(huan)時(shi)間問題,因此適用(yong)(yong)于對(dui)電(dian)源有嚴格要(yao)求的場合。

  在(zai)線式(shi)UPS不同于(yu)(yu)后備式(shi)UPS,持(chi)續供電時(shi)間長,一(yi)(yi)般為幾(ji)個小時(shi),甚至十幾(ji)個小時(shi)。它(ta)的主要功能是(shi)讓您在(zai)停電的情況下仍可像(xiang)平常(chang)一(yi)(yi)樣工作。顯然,由(you)于(yu)(yu)其功能的特殊性,價格也明顯貴(gui)很多。比較適用于(yu)(yu)計算機、交通、銀行、證券、通信(xin)、醫療、工業控制等電源要求嚴格的行業。

  在(zai)線互動式UPS:這(zhe)是(shi)一(yi)種(zhong)智(zhi)能(neng)(neng)(neng)化的(de)UPS,是(shi)指在(zai)市電(dian)(dian)正(zheng)常輸入時,UPS的(de)逆變(bian)器處于反向工(gong)作(即整流(liu)工(gong)作狀(zhuang)態),給電(dian)(dian)池組充電(dian)(dian)。在(zai)市電(dian)(dian)異常時逆變(bian)器立刻轉為(wei)逆變(bian)工(gong)作狀(zhuang)態,將電(dian)(dian)池組電(dian)(dian)能(neng)(neng)(neng)轉換(huan)為(wei)交流(liu)電(dian)(dian)輸出,同后(hou)備式UPS相比(bi),在(zai)線互動式UPS的(de)保護功能(neng)(neng)(neng)較強,逆變(bian)器輸出電(dian)(dian)壓波(bo)形(xing)較好,一(yi)般為(wei)正(zheng)弦波(bo)。具有較強的(de)軟(ruan)件功能(neng)(neng)(neng),可以方(fang)便地上網(wang)進行UPS的(de)遠程控(kong)制和智(zhi)能(neng)(neng)(neng)化管理(li)。

  可自動監(jian)測(ce)外部輸入電壓(ya)是(shi)否處于正常(chang)范圍之內,如有(you)偏差(cha)可由穩壓(ya)電器升壓(ya)或降壓(ya),提供(gong)比較穩定的(de)正弦波輸出電壓(ya)。而且它與計算機之間可以通過(guo)數(shu)據(ju)接(jie)口(kou)(如RS-232串口(kou))進(jin)行(xing)數(shu)據(ju)通訊(xun),通過(guo)監(jian)控軟件(jian),用(yong)戶可直接(jie)從電腦屏幕上(shang)監(jian)控電源及(ji)UPS狀況,方便管(guan)理工作并可提高(gao)計算機系統(tong)的(de)可靠性(xing)。這種UPS集(ji)中了后備(bei)式(shi)UPS效(xiao)率高(gao)和在(zai)線式(shi)UPS供(gong)電質(zhi)量高(gao)的(de)優點,但其穩頻性(xing)不是(shi)十(shi)分理想,不適合做(zuo)長延時的(de)UPS電源。
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