发(Fa)电(Dian)厂(Chang)和(He)变(Bian)电(Dian)站(Zhan)中(Zhong)的(De)电(Dian)力(Li)操(Cao)作(Zuo)电(Dian)源(Yuan)现(Xian)今(Jin)采(Cai)用(Yong)的(De)都(Du)是(Shi)直(Zhi)流(Liu)电(Dian)源(Yuan),(?)而(?)直(Zhi)流(Liu)屏(Ping)就(Jiu)是(Shi)用(Yong)来(Lai)供(Gong)应(Ying)这(Zhe)种(Zhong)直(Zhi)流(Liu)电(Dian)源(Yuan)的(De),(?)它(Ta)为(Wei)控(Kong)制(Zhi)负(Fu)荷(He)和(He)动(Dong)力(Li)负(Fu)荷(He)以(Yi)及(Ji)直(Zhi)流(Liu)事(Shi)故(Gu)照(Zhao)明(Ming)负(Fu)荷(He)等(Deng)提(Ti)供(Gong)电(Dian)源(Yuan),(?)是(Shi)当(Dang)代(Dai)电(Dian)力(Li)系(Xi)统(Tong)控(Kong)制(Zhi)、(?)保(Bao)护(Hu)的(De)基(Ji)础(Chu),(?)也(Ye)因(Yin)此(Ci)应(Ying)用(Yong)了(Liao)大(Da)量(Liang)的(De)**的(De)科(Ke)学(Xue)技(Ji)术(Shu)。(?)它(Ta)主(Zhu)要(Yao)由(You)电(Dian)源(Yuan)进(Jin)线(Xian)系(Xi)统(Tong)((?)交(Jiao)流(Liu)进(Jin)线(Xian))(?)、(?)电(Dian)源(Yuan)双(Shuang)路(Lu)互(Hu)投(Tou)系(Xi)统(Tong)、(?)充(Chong)电(Dian)机(Ji)控(Kong)制(Zhi)系(Xi)统(Tong)、(?)充(Chong)电(Dian)机(Ji)、(?)直(Zhi)流(Liu)分(Fen)配(Pei)系(Xi)统(Tong)、(?)绝(Jue)缘(Yuan)监(Jian)测(Ce)系(Xi)统(Tong)、(?)综(Zong)合(He)控(Kong)制(Zhi)器(Qi)((?)系(Xi)统(Tong)监(Jian)视(Shi)控(Kong)制(Zhi)系(Xi)统(Tong),(?)为(Wei)直(Zhi)流(Liu)屏(Ping)的(De)大(Da)脑(Nao))(?)、(?)闪(Shan)光(Guang)系(Xi)统(Tong)、(?)通(Tong)讯(Xun)系(Xi)统(Tong)、(?)蓄(Xu)电(Dian)池(Chi)这(Zhe)几(Ji)大(Da)部(Bu)分(Fen)组(Zu)成(Cheng)。(?)