目前(qian)變電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)站(zhan)的(de)直(zhi)流(liu)(liu)饋電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網絡多采用(yong)(yong)(yong)樹狀結(jie)構，從蓄電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)到(dao)站(zhan)內用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)設 備(bei)(bei)，一(yi)般經(jing)過三級配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，每(mei)級配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)大多采用(yong)(yong)(yong)直(zhi)流(liu)(liu)斷(duan)(duan)路(lu)(lu)(lu)器作(zuo)為(wei)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器。由于上(shang)下級直(zhi)流(liu)(liu)斷(duan)(duan)路(lu)(lu)(lu)器保(bao)護(hu)動(dong)(dong)作(zuo)特(te)(te)性(xing)不匹配(pei)，在直(zhi)流(liu)(liu)系(xi)(xi)(xi)統(tong)(tong)運(yun)行(xing)(xing)(xing)過程中(zhong)(zhong)，當下級用(yong)(yong)(yong) 電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)設備(bei)(bei)出現(xian)短(duan)路(lu)(lu)(lu)故障時，經(jing)常引(yin)(yin)起上(shang)一(yi)級直(zhi)流(liu)(liu)斷(duan)(duan)路(lu)(lu)(lu)器的(de)越級跳閘，從而引(yin)(yin)起其(qi)它(ta)饋電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)線路(lu)(lu)(lu)的(de)斷(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)事故，進(jin)(jin)而引(yin)(yin)起變電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)站(zhan)一(yi)次設備(bei)(bei)如高壓開關(guan)、變壓器、 電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器等的(de)事故。為(wei)防止因(yin)直(zhi)流(liu)(liu)斷(duan)(duan)路(lu)(lu)(lu)器及其(qi)它(ta)直(zhi)流(liu)(liu)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器動(dong)(dong)作(zuo)特(te)(te)性(xing)不匹配(pei)帶來(lai)的(de)隱患，國家電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網公(gong)司對于新裝和(he)(he)運(yun)行(xing)(xing)(xing)中(zhong)(zhong)的(de)直(zhi)流(liu)(liu)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器，規定(ding)(ding)了必(bi)須 進(jin)(jin)行(xing)(xing)(xing)安(an)秒(miao)特(te)(te)性(xing)測試，保(bao)證性(xing)能(neng)與設計相符，以確保(bao)直(zhi)流(liu)(liu)回路(lu)(lu)(lu)級差配(pei)合的(de)正確 性(xing)。2005年發布的(de)《直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源系(xi)(xi)(xi)統(tong)(tong)運(yun)行(xing)(xing)(xing)規范》第十二條第八(ba)款規定(ding)(ding)“直(zhi)流(liu)(liu)熔(rong)斷(duan)(duan)器和(he)(he)空氣斷(duan)(duan)路(lu)(lu)(lu)器應采用(yong)(yong)(yong)質量合格(ge)的(de)產品，其(qi)熔(rong)斷(duan)(duan)體或定(ding)(ding)值應按有關(guan)規定(ding)(ding)分級配(pei)置和(he)(he)整定(ding)(ding)，并(bing)定(ding)(ding)期進(jin)(jin)行(xing)(xing)(xing)核對，防止因(yin)其(qi)不正確動(dong)(dong)作(zuo)而擴(kuo)大事故” ；《直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源系(xi)(xi)(xi)統(tong)(tong)技術(shu)監督(du)規定(ding)(ding)》第二十七條中(zhong)(zhong)規定(ding)(ding)： “自動(dong)(dong)空氣斷(duan)(duan)路(lu)(lu)(lu)器使用(yong)(yong)(yong)前(qian) 應進(jin)(jin)行(xing)(xing)(xing)特(te)(te)性(xing)和(he)(he)動(dong)(dong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)抽查。”《預防直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源系(xi)(xi)(xi)統(tong)(tong)事故措施(shi)》第十一(yi)條中(zhong)(zhong)規定(ding)(ding)：“使用(yong)(yong)(yong)前(qian)宜進(jin)(jin)行(xing)(xing)(xing)安(an)秒(miao)特(te)(te)性(xing)和(he)(he)動(dong)(dong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)抽檢(jian)”。

　　直流保護(hu)電(dian)器(qi)的(de)安秒特性(xing)(xing)一般在國家級實驗(yan)室或檢(jian)測(ce)(ce)(ce)站(zhan)進(jin)行測(ce)(ce)(ce)試，設備 占(zhan)地面積大，需要配置專門(men)的(de)充電(dian)裝(zhuang)置和大電(dian)流負載箱，操作(zuo)復雜；部分運行單位利用變(bian)電(dian)站(zhan)蓄電(dian)池組對(dui)直流保護(hu)電(dian)器(qi)的(de)級差配合進(jin)行試驗(yan)，但無法準 確測(ce)(ce)(ce)試其電(dian)流-動作(zuo)時(shi)間(jian)特性(xing)(xing)。因而造成直流系統投運后，現場(chang)檢(jian)修維護(hu)人員因不具備相(xiang)應的(de)測(ce)(ce)(ce)試手段和工具，無法檢(jian)驗(yan)直流保護(hu)電(dian)器(qi)的(de)安秒特性(xing)(xing)是否滿 足要求。

　　根(gen)據直流(liu)保護電(dian)(dian)器(qi)安秒(miao)特(te)性(xing)測試(shi)的(de)(de)(de)現(xian)(xian)實狀況，本公司推(tui)出了一種適(shi)合(he)變電(dian)(dian)站(zhan)現(xian)(xian)場(chang)使(shi)用、便(bian)于攜(xie)帶、自動化(hua)程度高的(de)(de)(de)直流(liu)斷路器(qi)安秒(miao)特(te)性(xing)測試(shi)及級(ji)差(cha)配合(he)綜合(he)系(xi)(xi)統，可(ke)以為運(yun)行(xing)(xing)維(wei)護部門提供直流(liu)保護電(dian)(dian)器(qi)動作(zuo)特(te)性(xing)的(de)(de)(de)測試(shi)手(shou)段(duan)，對(dui)直流(liu)保護電(dian)(dian)器(qi)的(de)(de)(de)動作(zuo)特(te)性(xing)以及級(ji)差(cha)配合(he)進行(xing)(xing)校驗，以便(bian)提高直流(liu)系(xi)(xi)統運(yun)行(xing)(xing)的(de)(de)(de)可(ke)靠(kao)(kao)性(xing)，保證電(dian)(dian)網的(de)(de)(de)安全(quan)可(ke)靠(kao)(kao)運(yun)行(xing)(xing)。

1.儀器既可以單獨使(shi)用，也可以與 PC 機(ji)聯機(ji)使(shi)用。

2. 儀器提供(gong)直(zhi)流大電流源(yuan)使用簡便，無需提供(gong)蓄電池等直(zhi)流電源(yuan)。

3. 320×240 液(ye)晶顯(xian)示器、高速(su)熱敏打印機(ji)(ji)，人機(ji)(ji)對話全(quan)鍵盤操作(zuo)方式，智能化工(gong)作(zuo)全(quan)過(guo)程。

4. 采用電力電子控制技術產(chan)生(sheng)直流(liu)大(da)電流(liu)輸(shu)出(chu)，輸(shu)出(chu)電流(liu)響(xiang)應速度快、精度高、連(lian)續可調。

5. 多(duo)個高精度傳感器(qi)自(zi)動切換電流量(liang)程和高性能 14 位(wei) AD 采集芯(xin)片。

6. 具有掉電存儲功能，可(ke)以存 1000 組試驗數(shu)據。

7. 自動保(bao)存設置數據，掉電后開(kai)機后顯示上一次的設置數據。

8. 具(ju)有安秒動作試(shi)驗(yan)(yan)方(fang)式、通流不動作試(shi)驗(yan)(yan)、脫扣測(ce)試(shi)試(shi)驗(yan)(yan)、差級配合試(shi)驗(yan)(yan)、內阻(zu)測(ce)試(shi)試(shi)驗(yan)(yan)五大試(shi)驗(yan)(yan)。完全兼容全點(dian)測(ce)試(shi)和抽點(dian)測(ce)試(shi)。

9. 儀器提供 RS232 通信接(jie)口，電(dian)腦完全可以控制儀器并導出試驗數據。

10. 聯機(ji)使(shi)用方式時，可以操作控制儀器(qi)、導入(ru)試驗(yan)數(shu)(shu)據、存儲試驗(yan)數(shu)(shu)據、生成(cheng)數(shu)(shu)據報表(biao)、生成(cheng)數(shu)(shu)據曲(qu)線、生成(cheng) EXCEL 報表(biao)等。

11. 儀器帶有過(guo)熱、過(guo)流(liu)、過(guo)壓保護保護功能。

12. 儀器抗干擾能力(li)強，電磁兼容(rong)性能強。