一、EPS應急電源有哪些組成部分
EPS應急電源主要由整(zheng)流充電(dian)器(qi)(qi)(qi)(qi)、蓄電(dian)池(chi)(chi)(chi)組、逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)(qi)、互投(tou)裝置和系(xi)(xi)統(tong)控(kong)(kong)制(zhi)器(qi)(qi)(qi)(qi)等部分組成。其中,逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)(qi)是(shi)核心部分,作用(yong)是(shi)將蓄電(dian)池(chi)(chi)(chi)組存儲的直流電(dian)能變(bian)(bian)換成交(jiao)流電(dian)輸出(chu),供給(gei)負載設(she)備穩定(ding)持續的電(dian)力。整(zheng)流充電(dian)器(qi)(qi)(qi)(qi)的作用(yong)是(shi)在(zai)市電(dian)輸入正常時,對蓄電(dian)池(chi)(chi)(chi)組進行(xing)適(shi)時充電(dian)。互投(tou)裝置則保證(zheng)負載在(zai)市電(dian)及逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)(qi)輸出(chu)間的順利(li)切換。系(xi)(xi)統(tong)控(kong)(kong)制(zhi)器(qi)(qi)(qi)(qi)負責整(zheng)個系(xi)(xi)統(tong)的實時控(kong)(kong)制(zhi),可以發(fa)出(chu)故(gu)障(zhang)告警信(xin)(xin)號和接收(shou)遠程(cheng)聯動(dong)控(kong)(kong)制(zhi)信(xin)(xin)號,同時還(huan)可通過標準通訊接口實現EPS系(xi)(xi)統(tong)的遠程(cheng)監(jian)控(kong)(kong)。
除(chu)了以(yi)(yi)上(shang)核心部分(fen),EPS應(ying)急電(dian)(dian)源(yuan)(yuan)還(huan)包(bao)括輸(shu)入(ru)輸(shu)出單元(yuan)(yuan)、充(chong)(chong)電(dian)(dian)模塊(kuai)、電(dian)(dian)池(chi)組(zu)(zu)(zu)、監控器等(deng)組(zu)(zu)(zu)成部分(fen)。其(qi)中(zhong),輸(shu)入(ru)輸(shu)出單元(yuan)(yuan)負責(ze)市電(dian)(dian)與EPS應(ying)急電(dian)(dian)源(yuan)(yuan)之間的輸(shu)入(ru)輸(shu)出切換,電(dian)(dian)池(chi)組(zu)(zu)(zu)則是存儲直流電(dian)(dian)能的裝置,為(wei)逆變器提(ti)供直流電(dian)(dian)源(yuan)(yuan)。充(chong)(chong)電(dian)(dian)模塊(kuai)則是對(dui)電(dian)(dian)池(chi)組(zu)(zu)(zu)進行充(chong)(chong)電(dian)(dian)的設(she)備(bei),監控器則是對(dui)整個EPS應(ying)急電(dian)(dian)源(yuan)(yuan)進行監控和管理的設(she)備(bei),可以(yi)(yi)實時監測電(dian)(dian)源(yuan)(yuan)狀態(tai)、電(dian)(dian)池(chi)電(dian)(dian)量、負載情況等(deng)信息,并通(tong)過人機界面進行顯(xian)示和設(she)置。
此外,針對不同(tong)(tong)負(fu)載和(he)應(ying)(ying)用場(chang)景(jing),EPS應(ying)(ying)急(ji)(ji)電(dian)源(yuan)還可(ke)以配(pei)備(bei)不同(tong)(tong)的(de)功能模塊,如(ru)消防(fang)聯動接口、智(zhi)能電(dian)池(chi)管理、防(fang)雷保護等,以滿(man)足更(geng)為(wei)復雜(za)和(he)精細的(de)電(dian)力保障需(xu)求。需(xu)要注意(yi)的(de)是(shi),在選擇和(he)使(shi)用EPS應(ying)(ying)急(ji)(ji)電(dian)源(yuan)時,需(xu)要遵循負(fu)載容量選型原則,同(tong)(tong)時要考慮(lv)EPS應(ying)(ying)急(ji)(ji)電(dian)源(yuan)的(de)備(bei)用時間(jian)等因(yin)素,以確保其能夠滿(man)足應(ying)(ying)急(ji)(ji)情況(kuang)下的(de)電(dian)力需(xu)求。
二、eps電源的工作原理
1、當市電正常時,由市電經過互投裝置給重要負載供電,同時進行市電檢測及蓄電池充電管理,然后再由電池組向逆變器提供直流能源。在這里,充電器是一個僅需向蓄電池組提供相當于10%蓄電池組容量(Ah)的充電電流的小功率直流電源,它并不具備直接向逆變器提供直流電源的能力。此時,市電經由EPS的交流旁路和轉換開關所組成的供電系統向用戶的各種應急負載供電。與此同時,在EPS的邏輯控制板的調控下,逆變器停止工作處于自動關機狀態。在此條件下,用戶負載實際使用的電源是來自電網的市電,因此,EPS應急電源也是通常說的(de)一(yi)直工作在睡眠(mian)狀態,可以有效的(de)達到節能的(de)效果。
2、當(dang)市電(dian)(dian)供(gong)電(dian)(dian)中斷或市電(dian)(dian)電(dian)(dian)壓(ya)超限(±15%或±20%額定輸入電(dian)(dian)壓(ya))時,互投(tou)(tou)裝(zhuang)置(zhi)將(jiang)立(li)即(ji)投(tou)(tou)切(qie)至逆(ni)變(bian)器(qi)供(gong)電(dian)(dian),在電(dian)(dian)池組所(suo)提供(gong)的(de)直流能源的(de)支持下,此時,用(yong)戶負載所(suo)使用(yong)的(de)電(dian)(dian)源是(shi)通過EPS的(de)逆(ni)變(bian)器(qi)轉換的(de)交流電(dian)(dian)源,而不是(shi)來自市電(dian)(dian)。
3、當市(shi)電(dian)(dian)(dian)電(dian)(dian)(dian)壓恢復正常工作時,EPS的(de)控制(zhi)中心發出信號(hao)對(dui)逆變器執行自動(dong)關(guan)機操(cao)作,同時還通(tong)過它的(de)轉換(huan)(huan)開關(guan)執行從逆變器供(gong)(gong)電(dian)(dian)(dian)向交(jiao)流旁路供(gong)(gong)電(dian)(dian)(dian)的(de)切換(huan)(huan)操(cao)作。此后,EPS在經交(jiao)流旁路供(gong)(gong)電(dian)(dian)(dian)通(tong)路向負載(zai)提供(gong)(gong)市(shi)電(dian)(dian)(dian)的(de)同時,還通(tong)過充(chong)電(dian)(dian)(dian)器向電(dian)(dian)(dian)池組充(chong)電(dian)(dian)(dian)。
4、除用于(yu)應(ying)(ying)急(ji)(ji)照明系(xi)統外,其(qi)中三(san)相智能化(hua)變(bian)頻(pin)應(ying)(ying)急(ji)(ji)電(dian)源主要是為(wei)一(yi)級負荷中的(de)電(dian)動(dong)(dong)機提供一(yi)種可變(bian)頻(pin)的(de)應(ying)(ying)急(ji)(ji)電(dian)源系(xi)統,該(gai)產品方便解決了(le)電(dian)動(dong)(dong)機的(de)應(ying)(ying)急(ji)(ji)供電(dian)及其(qi)啟(qi)動(dong)(dong)過程中對供電(dian)設備的(de)沖擊(ji)影(ying)響。智能化(hua)應(ying)(ying)急(ji)(ji)電(dian)源可接受消防聯動(dong)(dong)信號(hao)、建筑智能總(zong)線信號(hao)控制(zhi),并(bing)可設定優先級,防止越級控制(zhi)。