電(dian)(dian)(dian)(dian)能質(zhi)(zhi)量(liang)(liang)從嚴格意(yi)(yi)思上講，衡量(liang)(liang)電(dian)(dian)(dian)(dian)能質(zhi)(zhi)量(liang)(liang)的主要(yao)指(zhi)標有電(dian)(dian)(dian)(dian)壓、頻率和波(bo)形。從普(pu)遍(bian)意(yi)(yi)義上講是指(zhi)優質(zhi)(zhi)供電(dian)(dian)(dian)(dian)，包括(kuo)電(dian)(dian)(dian)(dian)壓質(zhi)(zhi)量(liang)(liang)、電(dian)(dian)(dian)(dian)流(liu)質(zhi)(zhi)量(liang)(liang)、供電(dian)(dian)(dian)(dian)質(zhi)(zhi)量(liang)(liang)和用電(dian)(dian)(dian)(dian)質(zhi)(zhi)量(liang)(liang)。為(wei)了改善(shan)電(dian)(dian)(dian)(dian)能質(zhi)(zhi)量(liang)(liang)，需要(yao)采(cai)取相應的措施，并聯逆變器(qi)進(jin)行(xing)非線(xian)性負(fu)載諧(xie)波(bo)電(dian)(dian)(dian)(dian)流(liu)及無功補償使用的是 PWM 電(dian)(dian)(dian)(dian)流(liu)控制技術(shu)，起到調節電(dian)(dian)(dian)(dian)容(rong)直流(liu)電(dian)(dian)(dian)(dian)壓的作(zuo)用。而串聯逆變器(qi)使用的是 PWM 電(dian)(dian)(dian)(dian)壓控制技術(shu)，其主要(yao)是對輸出的電(dian)(dian)(dian)(dian)壓進(jin)行(xing)控制以達(da)到抑(yi)制諧(xie)波(bo)、降(jiang)低負(fu)荷的敏(min)感程(cheng)度(du)。

光(guang)纖無功補償柜的補償標準是(shi)什么

在(zai)重(zhong)載下(xia)，電(dian)(dian)(dian)(dian)壓將(jiang)大幅度下(xia)降(jiang)甚至(zhi)系(xi)統垮臺。電(dian)(dian)(dian)(dian)壓下(xia)降(jiang)如引起低電(dian)(dian)(dian)(dian)壓保護動作，會導致許多負荷停(ting)電(dian)(dian)(dian)(dian)。然而(er)在(zai)輕載時，系(xi)統電(dian)(dian)(dian)(dian)容(rong)過(guo)(guo)補償，同步發電(dian)(dian)(dian)(dian)機短時間過(guo)(guo)激，引起變壓器飽和，它將(jiang)產(chan)生(sheng)過(guo)(guo)多的諧波(bo)，如有可能(neng)會與(yu)電(dian)(dian)(dian)(dian)容(rong)器組、輸電(dian)(dian)(dian)(dian)線(xian)路等發生(sheng)鐵(tie)磁諧振，這可能(neng)使避雷器動作和損壞(huai)、電(dian)(dian)(dian)(dian)容(rong)器和電(dian)(dian)(dian)(dian)動機因諧波(bo)而(er)過(guo)(guo)熱、用戶(hu)設備損壞(huai)。

母線(xian)除必(bi)要(yao)的(de)彎(wan)頭及(ji)斜度(du)(du)外，不(bu)允許(xu)有(you)彎(wan)曲(qu)和(he)歪扭現象，要(yao)求母線(xian)寬面(mian)彎(wan)曲(qu)度(du)(du)每米(mi)不(bu)大于(yu)2mm，窄面(mian)每米(mi)不(bu)大于(yu)3mm。母線(xian)表面(mian)不(bu)得有(you)明顯的(de)錘痕、銼(cuo)痕、劃痕。母線(xian)與電器元件搭接，母線(xian)應按電器元件接線(xian)端子孔徑和(he)孔數要(yao)求。母線(xian)與電器元件接線(xian)端根部應有(you)不(bu)小于(yu)5mm的(de)空出位置。