無(wu)功(gong)補(bu)(bu)償(chang)對電網的(de)(de)(de)經濟運(yun)行具有作用(yong)。合理選擇無(wu)功(gong)補(bu)(bu)償(chang)方案和無(wu)功(gong)補(bu)(bu)償(chang)元(yuan)器件意(yi)義重大，投切開(kai)關(guan)的(de)(de)(de)選擇更加是決(jue)定了(le)電容(rong)器的(de)(de)(de)使用(yong)壽(shou)命。本文(wen)分(fen)析(xi)了(le)常用(yong)無(wu)功(gong)補(bu)(bu)償(chang)元(yuan)器件投切開(kai)關(guan)的(de)(de)(de)特點，并對各種投切開(kai)關(guan)的(de)(de)(de)性能進行了(le)比較(jiao)。

醫院配電(dian)系統無功補(bu)償柜的補(bu)償標準是什么

自(zi)愈式電(dian)(dian)(dian)(dian)容器產品(pin)特點：產品(pin)具有良好的(de)自(zi)愈性能，即(ji)在(zai)(zai)電(dian)(dian)(dian)(dian)介(jie)質局部(bu)(bu)擊穿(chuan)后(hou)(hou)，能自(zi)動(dong)地迅速恢復其絕緣性能。電(dian)(dian)(dian)(dian)容器電(dian)(dian)(dian)(dian)容偏(pian)差值不超過額(e)定值的(de)0～10%；在(zai)(zai)工(gong)頻額(e)定電(dian)(dian)(dian)(dian)壓下(xia)，20℃時損耗角正切(qie)值不大(da)于0.001；產品(pin)內部(bu)(bu)安(an)裝放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)阻，在(zai)(zai)斷(duan)電(dian)(dian)(dian)(dian)后(hou)(hou)1分鐘內可將(jiang)端子上(shang)的(de)電(dian)(dian)(dian)(dian)壓降低至50V以下(xia)；電(dian)(dian)(dian)(dian)容器內設過壓隔離(li)裝置，一(yi)旦電(dian)(dian)(dian)(dian)容器出現(xian)故障，內部(bu)(bu)產生的(de)過壓力將(jiang)使(shi)隔離(li)裝置動(dong)作，從(cong)而自(zi)動(dong)切(qie)斷(duan)電(dian)(dian)(dian)(dian)源。

在10 kV無功(gong)補償裝置中(zhong)，以(yi)(yi)前的(de)產(chan)品是用油(you)斷(duan)(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)來投切電容(rong)器(qi)(qi)(qi)的(de)，不(bu)能滿足(zu)頻(pin)繁投切的(de)需要。隨(sui)著高壓(ya)開關無油(you)化技(ji)術的(de)發展，10 kV油(you)斷(duan)(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)已被(bei)真(zhen)空(kong)(kong)斷(duan)(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)和(he)SF6斷(duan)(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)替代(dai)。這兩種斷(duan)(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)的(de)電氣壽命(ming)和(he)機械壽命(ming)長，都(dou)可以(yi)(yi)滿足(zu)頻(pin)繁投切的(de)要求(qiu)。但(dan)真(zhen)空(kong)(kong)斷(duan)(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)在滅弧原理上會出(chu)現截流過電壓(ya)的(de)情(qing)況，影響電容(rong)器(qi)(qi)(qi)的(de)絕緣(yuan)壽命(ming)，所以(yi)(yi)以(yi)(yi)選用SF6斷(duan)(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)為(wei)宜。