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直(zhi)流(liu)系(xi)(xi)(xi)统(tong)接(jie)(jie)地(di)故(gu)障(zhang)是电(dian)(dian)(dian)(dian)力系(xi)(xi)(xi)统(tong)中一种发(fa)生率高(gao)且(qie)危害性较大的(de)(de)(de)故(gu)障(zhang)。直(zhi)流(liu)系(xi)(xi)(xi)统(tong)通常所(suo)接(jie)(jie)设(she)备较多(duo)，回路(lu)结构复杂(za)。回路(lu)设(she)计的(de)(de)(de)不完善(shan)、误接(jie)(jie)线(xian)、元件生产工(gong)艺落后以及长期运行(xing)导致(zhi)的(de)(de)(de)电(dian)(dian)(dian)(dian)缆及接(jie)(jie)头老化等因素均可(ke)(ke)能(neng)导致(zhi)直(zhi)流(liu)电(dian)(dian)(dian)(dian)源接(jie)(jie)地(di)或短路(lu)，轻(qing)则开(kai)关(guan)断开(kai)装置失电(dian)(dian)(dian)(dian)，重则会造(zao)成(cheng)熔断器熔断、继电(dian)(dian)(dian)(dian)器烧毁、断路(lu)器误动或拒动，甚至有可(ke)(ke)能(neng)会引发(fa)全站(zhan)停(ting)电(dian)(dian)(dian)(dian)事故(gu)，极大的(de)(de)(de)妨害了发(fa)电(dian)(dian)(dian)(dian)厂、电(dian)(dian)(dian)(dian)网的(de)(de)(de)安全稳定运行(xing)。就如(ru)何(he)预防故(gu)障(zhang)发(fa)生，以及故(gu)障(zhang)发(fa)生后如(ru)何(he)快速处理，我公司(si)科(ke)研(yan)人员进行(xing)了广(guang)泛(fan)(fan)研(yan)究。在(zai)多(duo)年研(yan)究小(xiao)电(dian)(dian)(dian)(dian)流(liu)接(jie)(jie)地(di)选(xuan)线(xian)的(de)(de)(de)基础上(shang)，丹(dan)华(hua)昊(hao)博(bo)开(kai)发(fa)出了适用(yong)(yong)于(yu)(yu)直(zhi)流(liu)系(xi)(xi)(xi)统(tong)的(de)(de)(de)接(jie)(jie)地(di)选(xuan)线(xian)装置。装置采(cai)用(yong)(yong)适合直(zhi)流(liu)系(xi)(xi)(xi)统(tong)的(de)(de)(de)“群体比(bi)幅比(bi)相”法(fa)，可(ke)(ke)有效解决直(zhi)流(liu)系(xi)(xi)(xi) 统(tong)接(jie)(jie)地(di)选(xuan)线(xian)困难(nan)的(de)(de)(de)问题，选(xuan)线(xian)准(zhun)确度(du)高(gao)，性能(neng)优越(yue)，可(ke)(ke)广(guang)泛(fan)(fan)应(ying)用(yong)(yong)于(yu)(yu)电(dian)(dian)(dian)(dian)力、石(shi)化、冶(ye)金、邮电(dian)(dian)(dian)(dian)、铁路(lu)等行(xing)业的(de)(de)(de)发(fa)电(dian)(dian)(dian)(dian)厂或变电(dian)(dian)(dian)(dian)站(zhan)。