國電南自PDS763電容器保護裝置

適用(yong)于 10kV 及以(yi)下各種(zhong)電(dian)壓等級的(de)中性(xing)點不(bu)接地(di)或經電(dian)阻接地(di)系統(tong)并聯(lian)電(dian)容(rong)器的(de)保護和測控。裝置自帶操作回路。

A、B 型裝置在功能配(pei)置上的(de)區別在于不平衡(heng)(heng)保(bao)護，A 型為單相電壓型不平衡(heng)(heng)元件，B

型為(wei)單相(xiang)電流型不平衡元件，其他功能*相(xiang)同。

電流 I 段元件作(zuo)為電容器組(zu)內部相間(jian)短(duan)路(lu)或引(yin)出線(xian)相間(jian)故障的保護(hu)(hu)元件，可瞬時或帶一短(duan)延(yan)時動(dong)作(zuo)于跳閘，保護(hu)(hu)設置獨立的電流 I 段壓板。

2  電(dian)流(liu) II 段元件作(zuo)為(wei)(wei)電(dian)容器(qi)過(guo)電(dian)流(liu)保護元件，可作(zuo)為(wei)(wei)過(guo)負荷元件使用，若(ruo)能(neng)提供(gong)電(dian)容器(qi)的過(guo)電(dian)流(liu)損(sun)壞(huai)曲線，可選擇反時限特性(xing)。

設置獨立的(de)電流 II 段(duan)壓板，并可(ke)通過控(kong)制(zhi)字選擇為定時限或(huo)反時限保(bao)護(hu)。

3  應用于(yu)經小電(dian)阻接地系統中，接地零序(xu)(xu)電(dian)流(liu)相對較大，有必要采用直(zhi)接跳閘(zha)的(de)方式，故(gu)裝置(zhi)配(pei)置(zhi)了兩(liang)段式零序(xu)(xu)電(dian)流(liu)保護，其中零序(xu)(xu) II 段通過控制字(zi)選用動(dong)作跳閘(zha)/告警。零序(xu)(xu)保護總共設(she)置(zhi)了兩(liang)塊(kuai)壓板(ban)，分別(bie)是零序(xu)(xu)電(dian)流(liu) I、II 段保護壓板(ban)

國電南自PDS763電容器保護裝置

PDS－760 系列(lie)數字式保護(hu)測控(kong)裝(zhuang)置是我公司推出的全系列(lie)保護(hu)測控(kong)裝(zhuang)置，主要適用(yong)于發電(dian)(dian)(dian)(dian)(dian)廠(chang)廠(chang)用電(dian)(dian)(dian)(dian)(dian)、大型廠(chang)礦及企業廠(chang)用電(dian)(dian)(dian)(dian)(dian)部分。產(chan)(chan)品包括饋(kui)電(dian)(dian)(dian)(dian)(dian)線路保(bao)護(hu)、并聯電(dian)(dian)(dian)(dian)(dian)容器保(bao)護(hu)、電(dian)(dian)(dian)(dian)(dian)動(dong)機保(bao)護(hu)、廠(chang)用變(bian)壓器保(bao)護(hu)、備(bei)用電(dian)(dian)(dian)(dian)(dian)源自投、廠(chang)用電(dian)(dian)(dian)(dian)(dian)源切換等。也可(ke)適用于 35/66kV 及以下電(dian)(dian)(dian)(dian)(dian)壓等級變(bian)電(dian)(dian)(dian)(dian)(dian)站(zhan)，與(yu) PDS 系列其他產(chan)(chan)品一(yi)起可(ke)以構(gou)成變(bian)電(dian)(dian)(dian)(dian)(dian)站(zhan)自動(dong)化系統（SAS）及發電(dian)(dian)(dian)(dian)(dian)廠(chang)電(dian)(dian)(dian)(dian)(dian)氣(qi)自動(dong)化系統（ECS）。