直流系統維護
2019/6/6 10:52:09??????點擊：
一(yi)、直流系統維護
1）高頻開關電源模(mo)塊內部灰塵定期清掃；
2）直流屏(ping)內灰(hui)塵定期清(qing)掃；
3）蓄電(dian)(dian)(dian)池(chi)每(mei)(mei)年(nian)應以(yi)實際負荷做一(yi)次放(fang)電(dian)(dian)(dian)放(fang)電(dian)(dian)(dian)應保(bao)持(chi)電(dian)(dian)(dian)流(liu)穩定，放(fang)出額定容量的30％左右（以(yi)0.1C放(fang)電(dian)(dian)(dian)3小時），放(fang)電(dian)(dian)(dian)每(mei)(mei)小時應測一(yi)次單體電(dian)(dian)(dian)池(chi)及電(dian)(dian)(dian)池(chi)組電(dian)(dian)(dian)壓、放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)、溫度等，放(fang)電(dian)(dian)(dian)后應進(jin)行均(jun)衡(heng)充(chong)電(dian)(dian)(dian)然后轉浮充(chong)進(jin)行。
4)每月應測一(yi)次電(dian)池(chi)單(dan)體電(dian)壓及終端電(dian)壓，檢(jian)查外(wai)觀有無異常(chang)變(bian)形和發熱(re)，并(bing)保持完整運(yun)行記(ji)錄。
5)每年應檢查(cha)一次連接導線是否牢固，是否有(you)腐(fu)蝕、松動應擰(ning)緊(jin)至規定扭距，腐(fu)蝕應及時更換；
6)不要單獨增加(jia)或減少電(dian)(dian)池(chi)組中(zhong)幾個(ge)單體電(dian)(dian)池(chi)的負荷，這將(jiang)造成(cheng)單體電(dian)(dian)池(chi)容(rong)量的不平衡和充(chong)電(dian)(dian)的不均性，降低(di)電(dian)(dian)池(chi)的使(shi)用(yong)壽命。
7）常(chang)見故障及處(chu)理(li)
(1)蓄電(dian)池殼體異常。造成原(yuan)因有：充(chong)電(dian)電(dian)流過大，單(dan)只電(dian)池充(chong)電(dian)電(dian)壓超過了2.4V，內部(bu)有短(duan)路或局部(bu)放(fang)電(dian)、溫升超標、閥控失靈(ling)。處(chu)理(li)方法(fa)：減小充(chong)電(dian)電(dian)流，降低(di)充(chong)電(dian)電(dian)壓，檢查安(an)全閥體是(shi)否堵死。
(2)運行中浮充(chong)電(dian)(dian)(dian)(dian)壓(ya)正常(chang)，但一放電(dian)(dian)(dian)(dian)，電(dian)(dian)(dian)(dian)壓(ya)很快就下(xia)降到終止電(dian)(dian)(dian)(dian)壓(ya)值原因是蓄電(dian)(dian)(dian)(dian)池(chi)內部(bu)失(shi)水干(gan)涸、電(dian)(dian)(dian)(dian)解物(wu)質(zhi)(zhi)變質(zhi)(zhi)。此時(shi)應(ying)通知廠家更換電(dian)(dian)(dian)(dian)池(chi)。
二、應急處理的原(yuan)則
A、電(dian)(dian)源(yuan)系統故(gu)障(zhang)的(de)應(ying)急處理的(de)基本原則是：維持系統的(de)直流供電(dian)(dian)不(bu)中斷(duan)。
B、電源系(xi)統出現(xian)威脅通信(xin)安全(quan)或(huo)(huo)造成(cheng)通信(xin)中斷的故障主要包括：交(jiao)流(liu)電電路不可恢(hui)復性(xing)損壞；直(zhi)流(liu)負載或(huo)(huo)直(zhi)流(liu)配電發(fa)生短路；整流(liu)模塊(kuai)全(quan)部(bu)癱瘓；監控(kong)(kong)模塊(kuai)失控(kong)(kong)造成(cheng)的關機事故；直(zhi)流(liu)輸出過(guo)壓(ya)造成(cheng)的模塊(kuai)封(feng)鎖等。
1）直流配電的應急處理(li)
（1）負(fu)載(zai)局(ju)部短路(lu)：將損壞的負(fu)載(zai)直流(liu)斷路(lu)器(qi)斷開(kai)或(huo)饋(kui)電(dian)(dian)(dian)(dian)熔斷器(qi)分(fen)(fen)離。（2）配電(dian)(dian)(dian)(dian)斷路(lu)：由(you)于操作人(ren)員(yuan)的粗心(xin)或(huo)地震(zhen)等人(ren)為的或(huo)自然的因(yin)素造(zao)成的直流(liu)配電(dian)(dian)(dian)(dian)短路(lu)故(gu)(gu)障將直接影響(xiang)直流(liu)系(xi)統的安全。故(gu)(gu)障發生后，一般應按(an)照以下步驟進(jin)行處(chu)理：切斷交流(liu)供(gong)電(dian)(dian)(dian)(dian)；將電(dian)(dian)(dian)(dian)池強制從系(xi)統中分(fen)(fen)離；利(li)用電(dian)(dian)(dian)(dian)池或(huo)整流(liu)模塊直接給(gei)負(fu)載(zai)供(gong)電(dian)(dian)(dian)(dian)。2）監控系(xi)統故(gu)(gu)障的應急處(chu)理監控系(xi)統故(gu)(gu)障影響(xiang)直流(liu)供(gong)電(dian)(dian)(dian)(dian)安全時，只(zhi)需關掉監控模塊即(ji)可(ke)，但此時應注(zhu)意電(dian)(dian)(dian)(dian)池的管理和維護。
3）模塊故障的應急處理
（1）模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)內(nei)(nei)部(bu)(bu)短路：模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)內(nei)(nei)部(bu)(bu)短路時能自動退(tui)出系(xi)統(tong)。（2）部(bu)(bu)分模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)損壞：部(bu)(bu)分模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)損壞后(hou)，只要剩(sheng)余(yu)完好模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)能滿足負載供電(dian)要求，關掉損壞模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)的(de)交流電(dian)源即可。（3）模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)輸(shu)出過(guo)(guo)(guo)壓(ya)：當負載電(dian)流低于單個模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)容量(liang)時，某(mou)(mou)一個模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)輸(shu)出過(guo)(guo)(guo)壓(ya)將造成系(xi)統(tong)過(guo)(guo)(guo)壓(ya)，所有模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)過(guo)(guo)(guo)壓(ya)保(bao)護，并且不能自動恢復(fu)。處理方(fang)法為：關掉所有模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)的(de)交流開(kai)關，然后(hou)逐一打(da)開(kai)模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)，當打(da)開(kai)某(mou)(mou)一模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)系(xi)統(tong)再次出現過(guo)(guo)(guo)壓(ya)保(bao)護時，關掉該模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)，打(da)開(kai)其它模(mo)(mo)(mo)(mo)塊(kuai)(kuai)(kuai)，系(xi)統(tong)即恢復(fu)正常(chang)工作了。