導語：EPS應急電(dian)源分析論文一文來源于網友上傳，不代表本站(zhan)觀點，若(ruo)需要原創文章(zhang)可咨詢客服老師，歡迎參考(kao)。

摘要：應急電源eps的工(gong)(gong)作(zuo)原理(li),以(yi)及(ji)如何使用戶能夠理(li)性的去選擇產品。文(wen)中詳(xiang)細分析了EPS的構造(zao)和工(gong)(gong)作(zuo)原理(li)以(yi)及(ji)帶負載(zai)時的工(gong)(gong)作(zuo)特性和運行參(can)數。

關鍵詞：應急電源EPS應急電源工(gong)作原理(li)EPS特性

EPS應(ying)急電(dian)源(yuan)工作(zuo)原(yuan)理(li)及(ji)選型要點

韋德電子有限公司(si)陳(chen)偉環

摘要:應急電源EPS的工作原理,以及如何使用戶能夠理性的去選擇產品。文中詳細分析了EPS的構造和工(gong)作(zuo)原理以及帶負載(zai)時的工(gong)作(zuo)特(te)性和運行(xing)參數。

隨著社(she)會(hui)(hui)的(de)(de)(de)發(fa)(fa)(fa)展，建(jian)(jian)筑(zhu)(zhu)技術水平的(de)(de)(de)不(bu)斷提(ti)高，城市的(de)(de)(de)建(jian)(jian)筑(zhu)(zhu)趨向于(yu)大規模，高層化(hua)(hua)發(fa)(fa)(fa)展隨之而來對建(jian)(jian)筑(zhu)(zhu)的(de)(de)(de)供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)要(yao)求越來越高，社(she)會(hui)(hui)的(de)(de)(de)信息(xi)化(hua)(hua)，建(jian)(jian)筑(zhu)(zhu)的(de)(de)(de)現代(dai)化(hua)(hua)，使(shi)建(jian)(jian)筑(zhu)(zhu)對供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)依賴(lai)也越來越大，尤其(qi)是(shi)(shi)一(yi)些重(zhong)(zhong)要(yao)的(de)(de)(de)公共建(jian)(jian)筑(zhu)(zhu)，一(yi)旦中斷供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)，將造成重(zhong)(zhong)大的(de)(de)(de)政治(zhi)影響或經(jing)(jing)濟(ji)損失，如果是(shi)(shi)發(fa)(fa)(fa)生(sheng)火災，后果就(jiu)(jiu)更不(bu)堪設想(xiang)。所(suo)以現行(xing)的(de)(de)(de)《高層民用(yong)(yong)建(jian)(jian)筑(zhu)(zhu)設計(ji)防火規范》及(ji)《民用(yong)(yong)建(jian)(jian)筑(zhu)(zhu)電(dian)(dian)(dian)(dian)(dian)(dian)氣設計(ji)規范》就(jiu)(jiu)有嚴格規定：“一(yi)級負荷應(ying)(ying)由兩個電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)，當(dang)一(yi)個電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)發(fa)(fa)(fa)生(sheng)故(gu)障時，另(ling)一(yi)個電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)不(bu)致同時受到損壞(huai)。一(yi)級負荷中特別(bie)重(zhong)(zhong)要(yao)的(de)(de)(de)負荷，除上述兩個電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)外，還必須(xu)增設應(ying)(ying)急(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，常用(yong)(yong)的(de)(de)(de)應(ying)(ying)急(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)有：(1)獨(du)立(li)于(yu)正(zheng)常電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)的(de)(de)(de)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)機組；(2)供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)網絡中有效地獨(du)立(li)于(yu)正(zheng)常電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)的(de)(de)(de)專門供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)線路(lu)(lu)；(3)蓄(xu)(xu)電(dian)(dian)(dian)(dian)(dian)(dian)池。”多年(nian)(nian)來，運行(xing)經(jing)(jing)驗表明(ming)，電(dian)(dian)(dian)(dian)(dian)(dian)網供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)時采用(yong)(yong)兩路(lu)(lu)獨(du)立(li)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)．若主供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)線路(lu)(lu)停(ting)電(dian)(dian)(dian)(dian)(dian)(dian)，則由備(bei)用(yong)(yong)才(cai)路(lu)(lu)供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)，采用(yong)(yong)這(zhe)種方(fang)式(shi)雖然(ran)簡單、可靠，但供(gong)(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)線路(lu)(lu)復雜。當(dang)發(fa)(fa)(fa)生(sheng)大面積停(ting)電(dian)(dian)(dian)(dian)(dian)(dian)事故(gu)時，兩路(lu)(lu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)均可能發(fa)(fa)(fa)生(sheng)停(ting)電(dian)(dian)(dian)(dian)(dian)(dian)事故(gu)。因此，應(ying)(ying)急(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)作(zuo)為(wei)獨(du)立(li)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)網之外的(de)(de)(de)備(bei)用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)．被廣(guang)泛應(ying)(ying)用(yong)(yong)于(yu)各種建(jian)(jian)筑(zhu)(zhu)工程之中。目(mu)前，應(ying)(ying)急(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)包(bao)括柴油發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)(dian)機組和(he)蓄(xu)(xu)電(dian)(dian)(dian)(dian)(dian)(dian)池，近年(nian)(nian)來，含蓄(xu)(xu)電(dian)(dian)(dian)(dian)(dian)(dian)池的(de)(de)(de)EPS作(zuo)為(wei)應(ying)(ying)急(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，被廣(guang)泛應(ying)(ying)用(yong)(yong)，尤其(qi)是(shi)(shi)被用(yong)(yong)做消(xiao)防應(ying)(ying)急(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)。

1、EPS的工作原理

應(ying)急電(dian)源(yuan)采用單體(ti)逆變技術,集(ji)充電(dian)器、蓄電(dian)池、逆變器及控制器于(yu)一(yi)體(ti)。系統內(nei)部設(she)計(ji)了(le)電(dian)池檢測(ce)、分路檢測(ce)回路,其他主要部件的工(gong)作原理框圖如1所示

WY、WYS、WYS/B系列智(zhi)能化應急電(dian)源,采(cai)用后備式(shi)運行(xing)方(fang)式(shi)。

⑴當市(shi)電(dian)(dian)(dian)(dian)(dian)(dian)正常時(shi)，由(you)市(shi)電(dian)(dian)(dian)(dian)(dian)(dian)經過互投裝置給重要負載供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)，同時(shi)進行市(shi)電(dian)(dian)(dian)(dian)(dian)(dian)檢測及蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)管理(li),然后再由(you)電(dian)(dian)(dian)(dian)(dian)(dian)池組向(xiang)(xiang)逆變器提(ti)供(gong)直流(liu)能源(yuan)。在這里,充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器是(shi)一個僅需向(xiang)(xiang)蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)池組提(ti)供(gong)相當于10%蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)池組容(rong)量(Ah)的(de)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)小功率直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan),它并不具備直接向(xiang)(xiang)逆變器提(ti)供(gong)直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)能力(li)。此時(shi),市(shi)電(dian)(dian)(dian)(dian)(dian)(dian)經由(you)EPS的(de)交流(liu)旁路和轉換開關所組成(cheng)的(de)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)系統(tong)向(xiang)(xiang)用戶的(de)各種應急(ji)負載供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)。與(yu)此同時(shi),在EPS的(de)邏輯控(kong)制板的(de)調控(kong)下,逆變器停止工作處于自(zi)動(dong)關機狀態。在此條件下,用戶負載實際(ji)使用的(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)是(shi)來自(zi)電(dian)(dian)(dian)(dian)(dian)(dian)網的(de)市(shi)電(dian)(dian)(dian)(dian)(dian)(dian),因此,EPS應急(ji)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)也是(shi)通常說的(de)一直工作在睡眠狀態,可以有(you)效的(de)達(da)到節(jie)能的(de)效果。

⑵當(dang)市電(dian)(dian)(dian)(dian)供電(dian)(dian)(dian)(dian)中(zhong)斷(duan)或(huo)市電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓超限(±15%或(huo)±20%額定(ding)輸(shu)入電(dian)(dian)(dian)(dian)壓)時,互投裝置將立即投切(qie)至逆變(bian)器(qi)供電(dian)(dian)(dian)(dian)，在(zai)電(dian)(dian)(dian)(dian)池組所提供的(de)(de)直流能源(yuan)的(de)(de)支持下,此(ci)時,用戶負(fu)載所使用的(de)(de)電(dian)(dian)(dian)(dian)源(yuan)是通過EPS的(de)(de)逆變(bian)器(qi)轉換的(de)(de)交流電(dian)(dian)(dian)(dian)源(yuan),而(er)不是來自市電(dian)(dian)(dian)(dian)。

⑶當(dang)市電(dian)電(dian)壓恢復正(zheng)常工(gong)作(zuo)時(shi)，EPS的(de)控制(zhi)中(zhong)心發出信號對逆變(bian)(bian)器執行(xing)自動關(guan)機操作(zuo),同時(shi)還(huan)通(tong)過(guo)它的(de)轉換(huan)開關(guan)執行(xing)從逆變(bian)(bian)器供電(dian)向(xiang)交流旁路(lu)供電(dian)的(de)切換(huan)操作(zuo)。此后,EPS在經交流旁路(lu)供電(dian)通(tong)路(lu)向(xiang)負載提供市電(dian)的(de)同時(shi),還(huan)通(tong)過(guo)充電(dian)器向(xiang)電(dian)池組充電(dian)。

2、如何選配EPS

EPS通常產品(pin)特(te)征分為以下(xia)三類產品(pin)

⑴WY系列(lie)EPS(0.5～10KW)

WY系列EPS由單(dan)路、雙路供(gong)電(dian)輸入二類產品組成(輸入電(dian)壓(ya)220Vac或380Vac,輸出電(dian)壓(ya)220Vac),適(shi)應(ying)于(yu)應(ying)急(ji)照(zhao)(zhao)明和事(shi)故照(zhao)(zhao)明的照(zhao)(zhao)明負載(zai)。

(2)WYS系列EPS(2.2～400KW)

WYS系列EPS由(you)單路、雙路供電輸(shu)入二(er)類產品組成(輸(shu)入電壓(ya)380Vac,輸(shu)出電壓(ya)380Vac),除可用于應急(ji)照(zhao)明、事故照(zhao)明,同(tong)時也適應于消(xiao)防電梯(ti)、卷簾門、風機、水(shui)泵、淋浴泵、供水(shui)泵等(deng)電感性負載或混(hun)合供電。

(3)WYS/B系列(lie)EPS(2.2～400KW)

WYS/B系列(lie)EPS由單(dan)逆變單(dan)臺負載、單(dan)逆變單(dan)臺負載一(yi)用一(yi)備用、雙逆變單(dan)臺負載一(yi)用一(yi)備用三類產品組(zu)成(輸入電(dian)(dian)(dian)壓3800Vac,輸出(chu)電(dian)(dian)(dian)壓380Vac),僅為只(zhi)有(you)一(yi)路(lu)電(dian)(dian)(dian)源(yuan)的(de)(de)消防(fang)設施(shi)或一(yi)級(ji)負荷中(zhong)的(de)(de)電(dian)(dian)(dian)動(dong)機(ji)(ji)提供一(yi)種可(ke)變頻的(de)(de)三相應(ying)(ying)急(ji)電(dian)(dian)(dian)源(yuan)系統,在電(dian)(dian)(dian)源(yuan)和電(dian)(dian)(dian)機(ji)(ji)之間無需任何啟動(dong)裝(zhuang)置就可(ke)以解決電(dian)(dian)(dian)動(dong)機(ji)(ji)的(de)(de)應(ying)(ying)急(ji)供電(dian)(dian)(dian)及其啟動(dong)過(guo)程(cheng)中(zhong)對供電(dian)(dian)(dian)設備的(de)(de)沖擊。適應(ying)(ying)于高層(ceng)建筑的(de)(de)電(dian)(dian)(dian)梯、中(zhong)央空調、消防(fang)水泵等電(dian)(dian)(dian)機(ji)(ji)負載。

根據產品所帶負(fu)載特(te)征如(ru)何選用您所需求的EPS及其注意的要點:

2.1應急照明或事故照明用EPS(1~50KVA)

按GB17945-2000國家標準(消防(fang)應急(ji)燈具),為確保(bao)大樓的應急(ji)照明系統能正常運(yun)行,對EPS提出如下基(ji)本要求(qiu):

(1)要(yao)(yao)求負(fu)責向普通應急(ji)照明燈供(gong)(gong)電(dian)EPS的(de)供(gong)(gong)電(dian)中斷時間<5s.但對于高危(wei)險工作區及關鍵(jian)工作區的(de)應急(ji)照明而(er)言,則(ze)要(yao)(yao)求EPS的(de)供(gong)(gong)電(dian)中斷時間<0.25s。

(2)為(wei)盡可能的利用市電(dian),當市電(dian)電(dian)壓在187~242V(220V,-15%,+10%)的范圍內不(bu)允許EPS進入逆變器(qi)供電(dian)狀態。

(3)要求EPS配(pei)置(zhi)足夠容(rong)量的電(dian)(dian)池(chi)組,以(yi)便在市電(dian)(dian)供電(dian)(dian)中(zhong)斷時,至少確(que)保應急(ji)照(zhao)明燈(deng)可以(yi)繼續工作90min以(yi)上(shang)。

(4)EPS中(zhong)的(de)充(chong)電(dian)(dian)(dian)器對電(dian)(dian)(dian)池組(zu)的(de)最長充(chong)電(dian)(dian)(dian)時(shi)間小于(yu)24H,最大充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流小于(yu)0.4C(A)

在市(shi)(shi)電(dian)(dian)(dian)供電(dian)(dian)(dian)正常時(shi),EPS是通過它的(de)交流旁(pang)路向負(fu)(fu)載供電(dian)(dian)(dian).原則上,它可以帶具(ju)有各種不同功(gong)(gong)(gong)率(lv)(lv)因數(shu)的(de)負(fu)(fu)載.然而.在市(shi)(shi)電(dian)(dian)(dian)供電(dian)(dian)(dian)中斷或(huo)市(shi)(shi)電(dian)(dian)(dian)電(dian)(dian)(dian)壓或(huo)頻率(lv)(lv)超(chao)限時(shi),則是有EPS中的(de)逆變器來(lai)供電(dian)(dian)(dian)的(de).在此條件下,EPS的(de)帶載能(neng)力不僅需要考慮逆變器在不同功(gong)(gong)(gong)率(lv)(lv)因數(shu)值負(fu)(fu)載時(shi)的(de)降額(e)度輸出特性(xing).而且,還需要根據(ju)所使用的(de)應急(ji)照明燈具(ju)的(de)不同來(lai)選配EPS的(de)輸出功(gong)(gong)(gong)率(lv)(lv)和(he)機型.在選配EPS時(shi)應注意以下幾個問題:

(1)普通(tong)的(de)應急照明燈具.由于應急照明的(de)功(gong)耗(hao)是(shi)用有(you)功(gong)功(gong)率P(KW)來標注的(de),而EPS逆變(bian)器的(de)輸(shu)出功(gong)率是(shi)用功(gong)率因(yin)數(shu)cosφ=0.8(滯后)時的(de)視在功(gong)率S(KVA)來標注的(de).所以,實際(ji)選(xuan)用EPS的(de)滿載輸(shu)出功(gong)率應為:S=P/0.8。

(2)應急照明燈具(ju)為(wei)(wei)熒光燈時,所選用的(de)(de)EPS滿載輸出功率應為(wei)(wei)S=(1.3~1.5)P/0.8.其原因(yin)是(shi)熒光燈啟動時存在較大的(de)(de)”啟動浪涌”電流。

(3)應(ying)急照明燈(deng)具(ju)為高(gao)壓(ya)氣(qi)(qi)體(ti)燈(deng)時(shi)(shi)(例:高(gao)壓(ya)鈉(na)燈(deng),高(gao)壓(ya)鈀燈(deng)等),宜選用切(qie)換時(shi)(shi)間(jian)小于20ms的(de)EPS產品(pin).這是(shi)因為.如(ru)果對高(gao)壓(ya)氣(qi)(qi)體(ti)燈(deng)的(de)供(gong)電(dian)中(zhong)(zhong)斷(duan)時(shi)(shi)間(jian)超(chao)過20ms時(shi)(shi),就有可(ke)能致使氣(qi)(qi)體(ti)燈(deng)中(zhong)(zhong)的(de)放(fang)電(dian)電(dian)弧”熄滅或中(zhong)(zhong)斷(duan)”.一旦發生(sheng)放(fang)電(dian)電(dian)弧中(zhong)(zhong)斷(duan)現(xian)象,即使馬上(shang)恢復供(gong)電(dian)也(ye)可(ke)能導致長達數(shu)分(fen)鐘的(de)燈(deng)具(ju)熄滅現(xian)象發生(sheng).這因為它需要足夠(gou)長時(shi)(shi)間(jian)來(lai)重(zhong)新預熱高(gao)壓(ya)氣(qi)(qi)體(ti)燈(deng)中(zhong)(zhong)燈(deng)絲的(de)緣故.顯(xian)然,對于大型體(ti)育館(guan)和演出場地(di)的(de)照明系統來(lai)說,是(shi)不允許出現(xian)這種故障的(de)。

2.2應急(ji)照明+電(dian)動機混合型(xing)負載用EPS(三相,5~400KVA)

為(wei)了(le)正確(que)的(de)(de)選用(yong)EPS的(de)(de)輸出功率,應(ying)首先(xian)分別(bie)統計(ji)電(dian)(dian)阻性照明(ming)負(fu)載與(yu)電(dian)(dian)感(gan)性機電(dian)(dian)負(fu)載的(de)(de)比例(li).對于電(dian)(dian)機負(fu)載而(er)言(yan),因用(yong)戶所選的(de)(de)機型及工作方式(shi)的(de)(de)不(bu)同(tong),它的(de)(de)啟動電(dian)(dian)流可(ke)能高達5~10倍(bei)額(e)定工作電(dian)(dian)流.為(wei)確(que)保(bao)電(dian)(dian)機及EPS本身的(de)(de)安全運(yun)行,對這部分電(dian)(dian)機負(fu)載而(er)言(yan),不(bu)僅要求所選的(de)(de)EPS輸出功率應(ying)為(wei)6倍(bei)以上(shang)的(de)(de)電(dian)(dian)機標稱功率.而(er)且,還(huan)宜選用(yong)其切換時間小于15ms的(de)(de)EPS機型。

2.3帶電機(ji)負載的EPS

(1)采(cai)用電(dian)機(ji)”硬(ying)啟動:工作(zuo)方式(shi),對于這種(zhong)EPS輸出功(gong)(gong)率的(de)選用方案同22所述.采(cai)用這種(zhong)方案的(de)優點是:不管在市(shi)(shi)電(dian)供電(dian)中斷時(shi)還是在市(shi)(shi)電(dian)恢復正常工作(zuo)時(shi),EPS均可(ke)確保電(dian)機(ji)的(de)連續運行.其缺點是:需選用大功(gong)(gong)率的(de)EPS,成本較高。

(2)選(xuan)用帶變頻啟動功能(neng)的電機(ji)專用型EPS

市電(dian)(dian)(dian)供(gong)電(dian)(dian)(dian)正(zheng)常時(shi),經交(jiao)流旁路和轉(zhuan)換開關(guan)向電(dian)(dian)(dian)機(ji)負載供(gong)電(dian)(dian)(dian).與此同時(shi),市電(dian)(dian)(dian)還經充電(dian)(dian)(dian)器(qi)向電(dian)(dian)(dian)池組充電(dian)(dian)(dian).當市電(dian)(dian)(dian)供(gong)電(dian)(dian)(dian)中斷時(shi),為確保EPS的(de)安全運(yun)行(xing)(xing),希望(wang)他執(zhi)行(xing)(xing)”延時(shi)切換”操作(zuo),以便讓(rang)電(dian)(dian)(dian)機(ji)徹(che)底停止轉(zhuan)動(dong)后再啟動(dong)變頻器(qi),由它對后接電(dian)(dian)(dian)機(ji)執(zhi)行(xing)(xing)從0~220Hz的(de)頻率逐漸增高(gao)的(de)變頻啟動(dong)的(de)操作(zuo)(啟動(dong)時(shi)間(jian)為幾(ji)秒(miao)鐘).采用變頻啟動(dong)方案帶(dai)來的(de)好處是:

①防止在EPS與處(chu)于”慣性運動狀態”下的(de)電(dian)機所產生(sheng)(sheng)的(de)自激勵(li)電(dian)源處(chu)于互相”非同(tong)步入鎖”狀態而產生(sheng)(sheng)的(de)鼓(gu)掌(zhang)隱患(huan);

②可(ke)(ke)以降低(di)EPS的輸(shu)出功(gong)率和降低(di)投資成本.此時,EPS的輸(shu)出功(gong)率只需選取1.2~1.4倍電(dian)機(ji)的額定(ding)功(gong)率就可(ke)(ke)滿足要(yao)求(qiu)。

其缺點是:

①要求用戶的(de)電機負載首先(xian)停機,然后(hou)在滿速”變頻啟動”,從(cong)而造成電機負載工(gong)作的(de)”不(bu)連(lian)續性”

②如果后接的(de)幾臺電(dian)(dian)機需要在不同的(de)時(shi)刻進(jin)行”分時(shi)啟動(dong)”操作(zuo)時(shi),可(ke)能會遇到這樣的(de)技術難題(ti):在啟動(dong)處(chu)于(yu)靜止(zhi)狀態的(de)電(dian)(dian)機時(shi),若EPS的(de)輸(shu)出功(gong)率足夠大(da)它可(ke)能承(cheng)受5~10倍的(de)電(dian)(dian)機啟動(dong)浪涌(yong)電(dian)(dian)流的(de)沖擊.否則,就會迫使EPS重新(xin)進(jin)入新(xin)一輪的(de)”變頻啟動(dong)”工作(zuo)狀態.由此(ci)帶(dai)來的(de)問題(ti)之一是:原來處(chu)于(yu)正常工作(zuo)轉(zhuan)(zhuan)速(su)(su)的(de)電(dian)(dian)機,會再次(ci)轉(zhuan)(zhuan)入轉(zhuan)(zhuan)速(su)(su)由0~50Hz的(de)變速(su)(su)啟動(dong)階段,從(cong)而給用戶的(de)工作(zuo)帶(dai)來麻煩。

3結語

隨著社會(hui)的(de)(de)(de)進步和發(fa)展(zhan)，環境要求的(de)(de)(de)不斷(duan)提(ti)高(gao)，消防意識也越(yue)來越(yue)被(bei)人們(men)(men)重視(shi)。EPS以(yi)其特有的(de)(de)(de)優越(yue)性將(jiang)被(bei)人們(men)(men)認(ren)識和采用，在(zai)(zai)一個(ge)工(gong)程中，它(ta)可以(yi)靈活的(de)(de)(de)運用在(zai)(zai)消防供電(dian)回路末(mo)端、個(ge)別重要場合等多種情況。在(zai)(zai)選擇應(ying)急(ji)電(dian)源上(shang)，不再(zai)只局限于柴油發(fa)電(dian)機了，因為它(ta)們(men)(men)各自的(de)(de)(de)特點(dian)分別適用于不同的(de)(de)(de)工(gong)程，這將(jiang)為整個(ge)社會(hui)的(de)(de)(de)安全提(ti)供更有力的(de)(de)(de)保障。

參考文獻

1《民用建筑電氣設計規(gui)范》中國計劃出版社,1993

2GB17945-2000國家標準(消防應急燈(deng)具(ju))

3《應急電源(yuan)用的(de)EPS和UPS》李成章