電(dian)(dian)(dian)(dian)(dian)能質(zhi)量(liang)(liang)從(cong)嚴格意思上講，衡(heng)量(liang)(liang)電(dian)(dian)(dian)(dian)(dian)能質(zhi)量(liang)(liang)的(de)(de)主(zhu)要指標有電(dian)(dian)(dian)(dian)(dian)壓(ya)、頻率和(he)(he)波形。從(cong)普(pu)遍意義上講是(shi)指優(you)質(zhi)供(gong)電(dian)(dian)(dian)(dian)(dian)，包括電(dian)(dian)(dian)(dian)(dian)壓(ya)質(zhi)量(liang)(liang)、電(dian)(dian)(dian)(dian)(dian)流質(zhi)量(liang)(liang)、供(gong)電(dian)(dian)(dian)(dian)(dian)質(zhi)量(liang)(liang)和(he)(he)用電(dian)(dian)(dian)(dian)(dian)質(zhi)量(liang)(liang)。為了改善電(dian)(dian)(dian)(dian)(dian)能質(zhi)量(liang)(liang)，需(xu)要采(cai)取相應的(de)(de)措施，并聯逆變器進行非線性(xing)負載諧(xie)波電(dian)(dian)(dian)(dian)(dian)流及無功補償使用的(de)(de)是(shi) PWM 電(dian)(dian)(dian)(dian)(dian)流控制(zhi)技術，起到調節(jie)電(dian)(dian)(dian)(dian)(dian)容直流電(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)作用。而串聯逆變器使用的(de)(de)是(shi) PWM 電(dian)(dian)(dian)(dian)(dian)壓(ya)控制(zhi)技術，其(qi)主(zhu)要是(shi)對輸出的(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)進行控制(zhi)以達到抑(yi)制(zhi)諧(xie)波、降低負荷的(de)(de)敏感(gan)程度。

光纖(xian)無功補(bu)償柜的補(bu)償標準是什(shen)么

在(zai)重(zhong)載下，電(dian)(dian)(dian)壓將(jiang)大(da)幅度下降甚(shen)至系(xi)統垮臺。電(dian)(dian)(dian)壓下降如(ru)引(yin)(yin)起(qi)低電(dian)(dian)(dian)壓保護動作，會導致許(xu)多(duo)負荷停電(dian)(dian)(dian)。然(ran)而在(zai)輕載時，系(xi)統電(dian)(dian)(dian)容(rong)過(guo)(guo)補償(chang)，同步發(fa)電(dian)(dian)(dian)機短時間過(guo)(guo)激，引(yin)(yin)起(qi)變壓器飽和(he)，它將(jiang)產生過(guo)(guo)多(duo)的(de)諧(xie)波(bo)，如(ru)有可(ke)能會與(yu)電(dian)(dian)(dian)容(rong)器組、輸電(dian)(dian)(dian)線路等發(fa)生鐵磁諧(xie)振，這可(ke)能使(shi)避雷器動作和(he)損(sun)壞、電(dian)(dian)(dian)容(rong)器和(he)電(dian)(dian)(dian)動機因諧(xie)波(bo)而過(guo)(guo)熱(re)、用戶設備損(sun)壞。

母線(xian)(xian)(xian)除必要(yao)的(de)彎頭及斜度(du)外，不(bu)允許有(you)彎曲和歪扭(niu)現(xian)象，要(yao)求母線(xian)(xian)(xian)寬面彎曲度(du)每(mei)米不(bu)大于(yu)2mm，窄面每(mei)米不(bu)大于(yu)3mm。母線(xian)(xian)(xian)表面不(bu)得(de)有(you)明顯的(de)錘痕、銼(cuo)痕、劃痕。母線(xian)(xian)(xian)與(yu)電器(qi)元件搭接，母線(xian)(xian)(xian)應按電器(qi)元件接線(xian)(xian)(xian)端(duan)子孔徑和孔數(shu)要(yao)求。母線(xian)(xian)(xian)與(yu)電器(qi)元件接線(xian)(xian)(xian)端(duan)根部應有(you)不(bu)小于(yu)5mm的(de)空(kong)出位置。