本發明(ming)涉及電力(li)設(she)備，具體是一種雙向直(zhi)流(liu)故(gu)障(zhang)中斷裝(zhuang)置(zhi)及其控制方(fang)法。

背景技術：

1、隨著對(dui)于直(zhi)流(liu)負(fu)載的(de)廣泛(fan)使(shi)用，如(ru)電(dian)(dian)動汽車充電(dian)(dian)站，大型直(zhi)流(liu)數據(ju)中(zhong)心(xin)等，直(zhi)流(liu)網絡在(zai)輸配電(dian)(dian)網系(xi)統(tong)(tong)占的(de)比(bi)重增加。直(zhi)流(liu)斷(duan)路(lu)(lu)(lu)器(qi)因(yin)(yin)為具(ju)有快速(su)且(qie)選擇(ze)性的(de)保(bao)護直(zhi)流(liu)線(xian)路(lu)(lu)(lu)免受于因(yin)(yin)直(zhi)流(liu)短(duan)路(lu)(lu)(lu)故障而(er)(er)(er)造成的(de)重大停(ting)電(dian)(dian)事故而(er)(er)(er)被廣泛(fan)關注且(qie)研究。和交流(liu)斷(duan)路(lu)(lu)(lu)器(qi)相(xiang)比(bi)，對(dui)于直(zhi)流(liu)斷(duan)路(lu)(lu)(lu)器(qi)的(de)設計和研究必須考(kao)慮兩點(dian)，其一(yi)是(shi)因(yin)(yin)為直(zhi)流(liu)系(xi)統(tong)(tong)的(de)低慣性因(yin)(yin)素，當發生短(duan)路(lu)(lu)(lu)故障時，故障電(dian)(dian)流(liu)上升速(su)度(du)會(hui)比(bi)交流(liu)系(xi)統(tong)(tong)中(zhong)的(de)故障電(dian)(dian)流(liu)快得多，因(yin)(yin)此需(xu)要直(zhi)流(liu)斷(duan)路(lu)(lu)(lu)器(qi)具(ju)有較快的(de)響應(ying)速(su)度(du)，在(zai)短(duan)時間內對(dui)短(duan)路(lu)(lu)(lu)故障部(bu)分(fen)進行(xing)切(qie)除；其二是(shi)在(zai)直(zhi)流(liu)系(xi)統(tong)(tong)中(zhong)電(dian)(dian)流(liu)并無如(ru)在(zai)交流(liu)系(xi)統(tong)(tong)中(zhong)自然存在(zai)的(de)電(dian)(dian)流(liu)過(guo)零點(dian)，交流(liu)斷(duan)路(lu)(lu)(lu)器(qi)是(shi)在(zai)電(dian)(dian)流(liu)過(guo)零點(dian)處實(shi)現(xian)(xian)對(dui)于電(dian)(dian)弧(hu)的(de)熄滅，而(er)(er)(er)如(ru)何實(shi)現(xian)(xian)對(dui)于直(zhi)流(liu)故障電(dian)(dian)流(liu)進行(xing)無弧(hu)切(qie)斷(duan)操作是(shi)研究難點(dian)。

2、國內外對于直(zhi)流斷路器(qi)的(de)研(yan)究主(zhu)要有以下三種：

3、機(ji)械(xie)式直流(liu)斷路器：導(dao)通(tong)損耗極低，開(kai)斷容量較大，但其(qi)開(kai)斷時間較長，為有弧操(cao)作；

4、固態式直流斷路器：具有極快的響應速(su)度，但是(shi)導通損耗極高，發熱(re)量(liang)嚴重(zhong)，開斷容量(liang)較(jiao)小，在實際(ji)使用中通常是(shi)數(shu)個進行串聯(lian)并(bing)聯(lian)提高其開斷容量(liang)，且需要(yao)配(pei)備價格較(jiao)為昂(ang)貴的輔(fu)助散熱(re)設備。

5、混合(he)式直流(liu)斷(duan)路器(qi)：結合(he)了機(ji)械式直流(liu)斷(duan)路器(qi)低損(sun)耗(hao)的(de)(de)優點(dian)和固(gu)態(tai)式直流(liu)斷(duan)路器(qi)響應(ying)速度快的(de)(de)優點(dian)，而(er)被廣大學者重點(dian)研究。但傳統的(de)(de)混合(he)式直流(liu)斷(duan)路器(qi)需要主通(tong)流(liu)回路中的(de)(de)機(ji)械開(kai)關ms與人為創造的(de)(de)電流(liu)過零點(dian)精確配合(he)才能實現(xian)對于(yu)短路電路的(de)(de)無(wu)弧(hu)切(qie)斷(duan)操(cao)作，因此對于(yu)機(ji)械開(kai)關ms的(de)(de)控制(zhi)難(nan)度較高。

技術實現思路

1、鑒(jian)于上述(shu)存在的(de)問題，提出了本發(fa)明。

2、因(yin)此，本發明(ming)解決的技術問題是(shi)：如何降低對于機械開關ms的控(kong)制(zhi)難度，提升電力(li)控(kong)制(zhi)的可(ke)靠性(xing)(xing)和穩定性(xing)(xing)。

3、為(wei)解決上述技(ji)術(shu)問題，本發明提供如下(xia)技(ji)術(shu)方(fang)案(an)：

4、第一(yi)(yi)方面，本(ben)發(fa)明實施(shi)例提供了一(yi)(yi)種雙向(xiang)直流故(gu)障中斷裝置，包括主通(tong)流回路、充電(dian)回路、電(dian)壓(ya)注入回路和換向(xiang)單元；

5、所述(shu)主通(tong)流回路中不包(bao)含任何功率器件用以實現低通(tong)態損耗(hao)和高傳(chuan)輸(shu)效(xiao)率；

6、所述充電回路(lu)用于為儲能電容進行充電；

7、所(suo)述電(dian)壓(ya)注(zhu)入回(hui)路(lu)是(shi)用于在(zai)發生短路(lu)故障時(shi)，向(xiang)主通流回(hui)路(lu)中注(zhu)入電(dian)壓(ya)；

8、所述換向單元是用(yong)于在發生正向/反向短路(lu)故障時，使得注(zhu)入于主通流(liu)回(hui)路(lu)中的電(dian)壓(ya)極性為反向/正向。

9、作(zuo)為(wei)本發明所(suo)述雙向直流(liu)(liu)故障(zhang)中(zhong)斷(duan)裝置的(de)一種優(you)選方案，其中(zhong)：所(suo)述主(zhu)通流(liu)(liu)回路中(zhong)包含機械開關、限流(liu)(liu)電感(gan)和耦(ou)合電感(gan)的(de)二次側繞組；

10、所述充(chong)電回路中(zhong)包含(han)第(di)五半控(kong)型(xing)功率器件(jian)、第(di)一(yi)分(fen)(fen)壓電阻(zu)、第(di)二(er)(er)分(fen)(fen)壓電阻(zu)、第(di)三分(fen)(fen)壓電阻(zu)、第(di)一(yi)防逆流(liu)二(er)(er)極管和第(di)二(er)(er)防逆流(liu)二(er)(er)極管；

11、所(suo)述電壓注入回路中包含(han)第(di)一儲能電容、第(di)二儲能電容、第(di)一全控(kong)型功率器件(jian)、第(di)二全控(kong)型功率器件(jian)、第(di)三防逆(ni)流二極管、第(di)四防逆(ni)流二極管和(he)耦(ou)合電感一次側繞組；

12、所述換向單元(yuan)包(bao)含第一半(ban)控(kong)型(xing)(xing)功率(lv)(lv)器件(jian)、第二半(ban)控(kong)型(xing)(xing)功率(lv)(lv)器件(jian)、第三(san)半(ban)控(kong)型(xing)(xing)功率(lv)(lv)器件(jian)、第四(si)半(ban)控(kong)型(xing)(xing)功率(lv)(lv)器件(jian)。

13、第二方(fang)面(mian)，本發(fa)明實(shi)施(shi)例提供了一種(zhong)雙向(xiang)直(zhi)流(liu)(liu)故(gu)障(zhang)中(zhong)斷(duan)裝(zhuang)置的控制(zhi)方(fang)法，包(bao)括：對所述(shu)的基于雙向(xiang)直(zhi)流(liu)(liu)故(gu)障(zhang)中(zhong)斷(duan)裝(zhuang)置進行控制(zhi)，所述(shu)控制(zhi)方(fang)法分為正向(xiang)、反向(xiang)短(duan)路故(gu)障(zhang)控制(zhi)兩(liang)種(zhong)模式(shi)。

14、作為(wei)(wei)本發(fa)明所述雙(shuang)向(xiang)(xiang)直流(liu)故(gu)(gu)障(zhang)中(zhong)斷裝(zhuang)置(zhi)的控制方法(fa)的一種優選(xuan)方案，其(qi)中(zhong)：所述的雙(shuang)向(xiang)(xiang)直流(liu)故(gu)(gu)障(zhang)中(zhong)斷裝(zhuang)置(zhi)在對于正向(xiang)(xiang)故(gu)(gu)障(zhang)部分(fen)(fen)(直流(liu)斷路(lu)器(qi)左(zuo)端為(wei)(wei)直流(liu)母線，右端為(wei)(wei)故(gu)(gu)障(zhang)部分(fen)(fen))進行(xing)無弧隔(ge)離時，有以下工作模態,

15、正向故障第(di)一(yi)工作(zuo)模態：主通流(liu)回路(lu)中(zhong)(zhong)的機械(xie)開(kai)關ms閉合，導通路(lu)徑中(zhong)(zhong)僅包含機械(xie)開(kai)關ms、限流(liu)電(dian)(dian)感(gan)和耦合電(dian)(dian)感(gan)二次側(ce)繞組，不(bu)包含任何功(gong)(gong)率(lv)型器(qi)件(jian)，所以其具有(you)較(jiao)低的通態損耗和較(jiao)高的功(gong)(gong)率(lv)傳輸(shu)效率(lv)；充(chong)(chong)電(dian)(dian)回路(lu)中(zhong)(zhong)的第(di)五半(ban)控型功(gong)(gong)率(lv)器(qi)件(jian)被施加導通信號，則第(di)一(yi)儲(chu)能(neng)電(dian)(dian)容和第(di)二儲(chu)能(neng)電(dian)(dian)容得(de)到能(neng)量的存儲(chu)，當(dang)充(chong)(chong)電(dian)(dian)完畢之(zhi)后，第(di)五半(ban)控型功(gong)(gong)率(lv)器(qi)件(jian)會自動關閉；

16、正向故(gu)障(zhang)第二工作模態：發生短路故(gu)障(zhang)后(hou)，由于直(zhi)流線路的低阻抗和低慣性因素，主通流回路中的故(gu)障(zhang)電流迅速增加(jia)；

17、正向故障(zhang)第(di)三工(gong)(gong)作模態：當(dang)主(zhu)通(tong)流(liu)(liu)(liu)回路(lu)(lu)中的(de)(de)故障(zhang)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)達到(dao)所預設(she)的(de)(de)斷(duan)路(lu)(lu)器動作電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)閾值(zhi)時，電(dian)(dian)(dian)(dian)壓(ya)(ya)注入模態隨即開始工(gong)(gong)作，對第(di)一(yi)全控(kong)型功率器件(jian)(jian)、第(di)一(yi)半控(kong)型功率器件(jian)(jian)和第(di)三半控(kong)型功率器件(jian)(jian)施加(jia)導通(tong)信號(hao)，則(ze)第(di)一(yi)儲(chu)(chu)能(neng)電(dian)(dian)(dian)(dian)容和第(di)二(er)儲(chu)(chu)能(neng)電(dian)(dian)(dian)(dian)容串聯進行放電(dian)(dian)(dian)(dian)，通(tong)過換向單元和耦合電(dian)(dian)(dian)(dian)感(gan)的(de)(de)作用，在主(zhu)通(tong)流(liu)(liu)(liu)回路(lu)(lu)中注入極性為左正右負但幅值(zhi)高于直流(liu)(liu)(liu)母線的(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)，使得(de)主(zhu)通(tong)流(liu)(liu)(liu)回路(lu)(lu)中的(de)(de)故障(zhang)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)迅(xun)速(su)下降；

18、正(zheng)向故(gu)障第(di)四工作模態(tai)：當主(zhu)通(tong)(tong)流回(hui)(hui)路(lu)(lu)中(zhong)的故(gu)障電(dian)(dian)(dian)流下降至零點時，對第(di)一全(quan)控(kong)(kong)型功(gong)(gong)率器(qi)件施加(jia)(jia)關斷(duan)信號，并對第(di)二全(quan)控(kong)(kong)型功(gong)(gong)率器(qi)件施加(jia)(jia)導通(tong)(tong)信號，則第(di)二儲能電(dian)(dian)(dian)容(rong)開(kai)始單獨放電(dian)(dian)(dian)，在主(zhu)通(tong)(tong)流回(hui)(hui)路(lu)(lu)中(zhong)注入極性為左正(zheng)右負但(dan)幅(fu)值低于直流母(mu)線(xian)的電(dian)(dian)(dian)壓，使得主(zhu)通(tong)(tong)流回(hui)(hui)路(lu)(lu)中(zhong)的故(gu)障電(dian)(dian)(dian)流開(kai)始回(hui)(hui)升；

19、正向(xiang)故障(zhang)(zhang)第五工作(zuo)模態：當主通(tong)流回(hui)路中的(de)故障(zhang)(zhang)電(dian)(dian)流回(hui)升至所預設調制紋(wen)波電(dian)(dian)流的(de)波峰值時(shi)，對(dui)第一全控型功率器件施加開通(tong)信號(hao)，則主通(tong)流回(hui)路中的(de)故障(zhang)(zhang)電(dian)(dian)流又(you)開始下降；

20、正向(xiang)(xiang)故障(zhang)(zhang)第六工作模(mo)態(tai)：重復(fu)正向(xiang)(xiang)故障(zhang)(zhang)第四工作模(mo)態(tai)和(he)正向(xiang)(xiang)故障(zhang)(zhang)第五工作模(mo)態(tai)的(de)操作，即可將故障(zhang)(zhang)電流(liu)調制(zhi)(zhi)成(cheng)為在零點附近的(de)紋波(bo)電流(liu)，并(bing)在所調制(zhi)(zhi)的(de)紋波(bo)電流(liu)時間窗口內斷開機械(xie)開關(guan)ms，即可實現對于(yu)故障(zhang)(zhang)部分的(de)無(wu)弧隔離；

21、正向(xiang)故障第(di)七(qi)工(gong)作模態：短路故障部分被無弧(hu)隔離后，殘存于耦合電感中(zhong)的(de)能(neng)量通(tong)過(guo)第(di)一(yi)半(ban)控型功(gong)率器(qi)(qi)件(jian)、第(di)三(san)半(ban)控型功(gong)率器(qi)(qi)件(jian)和(he)第(di)四防逆(ni)流二極(ji)管的(de)內阻進(jin)行(xing)耗散，當能(neng)量耗散完畢之后，第(di)一(yi)半(ban)控型功(gong)率器(qi)(qi)件(jian)和(he)第(di)三(san)半(ban)控型功(gong)率器(qi)(qi)件(jian)會(hui)自動關閉。

22、作為本(ben)發(fa)明(ming)所述(shu)雙向(xiang)直(zhi)流(liu)故(gu)障中(zhong)斷裝(zhuang)置(zhi)的(de)控制方法的(de)一(yi)種優(you)選方案(an)，其中(zhong)：所述(shu)雙向(xiang)直(zhi)流(liu)故(gu)障中(zhong)斷裝(zhuang)置(zhi)在對于反向(xiang)故(gu)障部分(直(zhi)流(liu)斷路器(qi)左端為故(gu)障部分，右端為直(zhi)流(liu)母線)進行無弧隔離時，有以下工作模態,

23、反向故障第(di)一工作模態(tai)：主通(tong)流回路(lu)中(zhong)(zhong)的(de)(de)機械開(kai)關(guan)ms閉(bi)合，導通(tong)路(lu)徑中(zhong)(zhong)僅(jin)包含機械開(kai)關(guan)ms、限流電(dian)(dian)感和耦合電(dian)(dian)感二(er)次側繞組，不包含任(ren)何(he)功(gong)率(lv)(lv)型器件，所以其具有較低的(de)(de)通(tong)態(tai)損(sun)耗和較高的(de)(de)功(gong)率(lv)(lv)傳輸效率(lv)(lv)；充電(dian)(dian)回路(lu)中(zhong)(zhong)的(de)(de)第(di)五半(ban)控(kong)型功(gong)率(lv)(lv)器件被施加(jia)導通(tong)信號，則(ze)第(di)一儲(chu)能(neng)電(dian)(dian)容和第(di)二(er)儲(chu)能(neng)電(dian)(dian)容得(de)到能(neng)量的(de)(de)存儲(chu)，當充電(dian)(dian)完畢之后，第(di)五半(ban)控(kong)型功(gong)率(lv)(lv)器件會自動關(guan)閉(bi)；

24、反向故障(zhang)第二(er)工作模態：發生短(duan)路故障(zhang)后，由于(yu)直流線路的(de)低(di)阻抗(kang)和低(di)慣性因素，主(zhu)通流回路中(zhong)的(de)故障(zhang)電流迅速增加；

25、反向故障(zhang)第(di)三工作(zuo)(zuo)(zuo)(zuo)模態(tai)：當主(zhu)通流(liu)回路(lu)中的(de)(de)故障(zhang)電(dian)(dian)流(liu)達到所(suo)預設的(de)(de)斷路(lu)器動作(zuo)(zuo)(zuo)(zuo)電(dian)(dian)流(liu)閾值時，電(dian)(dian)壓注入模態(tai)隨即開始工作(zuo)(zuo)(zuo)(zuo)，對第(di)一(yi)全控(kong)型(xing)(xing)功率(lv)器件、第(di)二(er)半控(kong)型(xing)(xing)功率(lv)器件和第(di)四半控(kong)型(xing)(xing)功率(lv)器件施(shi)加導通信號，則(ze)第(di)一(yi)儲能(neng)電(dian)(dian)容(rong)和第(di)二(er)儲能(neng)電(dian)(dian)容(rong)串聯進行放電(dian)(dian)，通過換向單元和耦合(he)電(dian)(dian)感的(de)(de)作(zuo)(zuo)(zuo)(zuo)用，在主(zhu)通流(liu)回路(lu)中注入極性為右正左負(fu)且幅(fu)(fu)值高于(yu)直流(liu)母線的(de)(de)電(dian)(dian)壓，使(shi)得主(zhu)通流(liu)回路(lu)中的(de)(de)故障(zhang)電(dian)(dian)流(liu)的(de)(de)幅(fu)(fu)值迅速減小；

26、反(fan)向故障(zhang)第四(si)工作(zuo)模(mo)態：當主(zhu)通(tong)流(liu)(liu)回路(lu)中(zhong)的(de)故障(zhang)電(dian)流(liu)(liu)的(de)幅(fu)值(zhi)減(jian)小至零(ling)點時(shi)，對第一(yi)全控型(xing)功(gong)率器件(jian)施加(jia)關(guan)斷信號，并對第二全控型(xing)功(gong)率器件(jian)施加(jia)導(dao)通(tong)信號，則第二儲能電(dian)容開始單(dan)獨放電(dian)，在主(zhu)通(tong)流(liu)(liu)回路(lu)中(zhong)注入極性為右正左(zuo)負但幅(fu)值(zhi)低于(yu)直流(liu)(liu)母(mu)線的(de)電(dian)壓(ya)，使得主(zhu)通(tong)流(liu)(liu)回路(lu)中(zhong)的(de)故障(zhang)電(dian)流(liu)(liu)的(de)幅(fu)值(zhi)開始回升(sheng)；

27、反向故障(zhang)第五工作模態(tai)：當(dang)主(zhu)通流(liu)回(hui)路中(zhong)的(de)故障(zhang)電(dian)流(liu)回(hui)升至所預設調制紋波(bo)電(dian)流(liu)的(de)波(bo)谷值(zhi)時，對第一全控型功率器(qi)件施加(jia)開(kai)通信(xin)號，則主(zhu)通流(liu)回(hui)路中(zhong)的(de)故障(zhang)電(dian)流(liu)又(you)開(kai)始減(jian)小；

28、反(fan)向(xiang)故障(zhang)第六工作模態(tai)：重復反(fan)向(xiang)故障(zhang)第四工作模態(tai)和反(fan)向(xiang)故障(zhang)第五(wu)工作模態(tai)中的(de)操作，即可將故障(zhang)電流調制成為在(zai)零點附近的(de)紋(wen)波(bo)電流，并在(zai)所調制的(de)紋(wen)波(bo)電流時(shi)間窗口(kou)內斷開機械開關ms，即可實現對于故障(zhang)部分的(de)無(wu)弧隔離(li)；

29、反向故障第(di)七工作(zuo)模態：短路故障部分被無弧隔離后，殘存(cun)于耦合電感中的(de)能量通過(guo)第(di)二半(ban)控(kong)型(xing)(xing)功(gong)率器件(jian)(jian)(jian)、第(di)四(si)半(ban)控(kong)型(xing)(xing)功(gong)率器件(jian)(jian)(jian)和(he)第(di)四(si)防逆(ni)流二極管的(de)內阻進行耗散，當(dang)能量耗散完畢之后，第(di)二半(ban)控(kong)型(xing)(xing)功(gong)率器件(jian)(jian)(jian)和(he)第(di)四(si)半(ban)控(kong)型(xing)(xing)功(gong)率器件(jian)(jian)(jian)會(hui)自動關閉。

30、作為(wei)(wei)本發明所述雙向(xiang)直(zhi)流(liu)(liu)故障(zhang)中斷裝置(zhi)的(de)(de)控(kong)制方法的(de)(de)一種優選方案，其中：在(zai)對(dui)(dui)于(yu)(yu)正向(xiang)故障(zhang)部分(fen)(直(zhi)流(liu)(liu)斷路(lu)器(qi)左端為(wei)(wei)直(zhi)流(liu)(liu)母線(xian)，右(you)端為(wei)(wei)故障(zhang)部分(fen))進行(xing)無弧隔離(li)時，對(dui)(dui)于(yu)(yu)第二全(quan)控(kong)型功率(lv)(lv)(lv)器(qi)件、第一半(ban)控(kong)型功率(lv)(lv)(lv)器(qi)件和(he)第三半(ban)控(kong)型功率(lv)(lv)(lv)器(qi)件只(zhi)需(xu)要在(zai)主(zhu)通(tong)流(liu)(liu)回路(lu)中的(de)(de)故障(zhang)電(dian)流(liu)(liu)達(da)到所預設的(de)(de)動作閾值(zhi)電(dian)流(liu)(liu)時施加導(dao)通(tong)信(xin)號，在(zai)故障(zhang)被(bei)無弧隔離(li)后施加關(guan)斷信(xin)號；對(dui)(dui)于(yu)(yu)第一全(quan)控(kong)型功率(lv)(lv)(lv)器(qi)件需(xu)要再發生故障(zhang)時，施加高頻pwm信(xin)號控(kong)制其開(kai)通(tong)或關(guan)斷；

31、對(dui)于(yu)反向(xiang)故(gu)障(zhang)(zhang)部分(fen)(直流斷路器(qi)左端為故(gu)障(zhang)(zhang)部分(fen)，右端為直流母線(xian))進行(xing)無弧隔(ge)離(li)時，對(dui)于(yu)第(di)(di)二(er)全控(kong)型(xing)(xing)功(gong)率(lv)器(qi)件、第(di)(di)二(er)半控(kong)型(xing)(xing)功(gong)率(lv)器(qi)件和第(di)(di)四(si)半控(kong)型(xing)(xing)功(gong)率(lv)器(qi)件只(zhi)需要在主通(tong)流回路中的故(gu)障(zhang)(zhang)電流達(da)到所預設的動作閾(yu)值電流時施(shi)加(jia)導(dao)通(tong)信(xin)(xin)號，在故(gu)障(zhang)(zhang)被(bei)無弧隔(ge)離(li)后施(shi)加(jia)關斷信(xin)(xin)號；對(dui)于(yu)第(di)(di)一全控(kong)型(xing)(xing)功(gong)率(lv)器(qi)件需要再(zai)發(fa)生故(gu)障(zhang)(zhang)時，施(shi)加(jia)高頻(pin)pwm信(xin)(xin)號控(kong)制其(qi)開通(tong)或關斷。

32、作(zuo)為本發明所述雙向(xiang)直(zhi)(zhi)流(liu)故(gu)障中(zhong)斷裝(zhuang)置的(de)控制方法的(de)一(yi)種優選(xuan)方案，其中(zhong)：對于正向(xiang)故(gu)障部分(fen)(直(zhi)(zhi)流(liu)斷路(lu)器(qi)左端為直(zhi)(zhi)流(liu)母(mu)線(xian)，右端為故(gu)障部分(fen))進行無弧隔離時，在對于第(di)(di)一(yi)全控型功率期間的(de)控制信號(hao)pwm波形中(zhong)，當(dang)處(chu)于高(gao)電平(ping)時，第(di)(di)一(yi)儲(chu)能(neng)電容和(he)第(di)(di)二儲(chu)能(neng)電容串(chuan)聯進行放電，通(tong)過換向(xiang)單(dan)元和(he)耦合(he)電感的(de)作(zuo)用(yong)下在主通(tong)流(liu)回路(lu)中(zhong)注入(ru)幅值高(gao)于直(zhi)(zhi)流(liu)母(mu)線(xian)但(dan)極性與直(zhi)(zhi)流(liu)母(mu)線(xian)相(xiang)反的(de)電壓，迫使故(gu)障電流(liu)下降；當(dang)處(chu)于低(di)電平(ping)時，第(di)(di)一(yi)儲(chu)能(neng)電容停止放電，只有第(di)(di)二儲(chu)能(neng)電容單(dan)獨放電，通(tong)過換向(xiang)單(dan)元和(he)耦合(he)電感的(de)作(zuo)用(yong)在主通(tong)流(liu)回路(lu)中(zhong)注入(ru)幅值低(di)于直(zhi)(zhi)流(liu)母(mu)線(xian)但(dan)極性與直(zhi)(zhi)流(liu)母(mu)線(xian)相(xiang)反的(de)電壓，使得故(gu)障電流(liu)能(neng)夠(gou)得以緩(huan)慢回升。

33、作為(wei)本發明所述雙向(xiang)(xiang)直(zhi)(zhi)(zhi)流故障中(zhong)斷(duan)(duan)裝置的控(kong)制(zhi)(zhi)方(fang)法的一種(zhong)優選方(fang)案，其中(zhong)：對于(yu)反向(xiang)(xiang)故障部分(fen)(直(zhi)(zhi)(zhi)流斷(duan)(duan)路(lu)器(qi)左端為(wei)故障部分(fen)，右端為(wei)直(zhi)(zhi)(zhi)流母(mu)線(xian))進(jin)行(xing)無弧隔離時(shi)，在對于(yu)第一全(quan)控(kong)型功(gong)率期(qi)間的控(kong)制(zhi)(zhi)信號pwm波形中(zhong)，當處于(yu)高電(dian)(dian)(dian)(dian)平時(shi)，第一儲(chu)(chu)能(neng)(neng)(neng)(neng)電(dian)(dian)(dian)(dian)容(rong)和第二儲(chu)(chu)能(neng)(neng)(neng)(neng)電(dian)(dian)(dian)(dian)容(rong)串聯進(jin)行(xing)放電(dian)(dian)(dian)(dian)，通(tong)過(guo)換(huan)向(xiang)(xiang)單(dan)(dan)元和耦合(he)電(dian)(dian)(dian)(dian)感的作用(yong)下在主通(tong)流回路(lu)中(zhong)注(zhu)入(ru)幅值高于(yu)直(zhi)(zhi)(zhi)流母(mu)線(xian)但極性與(yu)直(zhi)(zhi)(zhi)流母(mu)線(xian)相反的電(dian)(dian)(dian)(dian)壓(ya)，迫(po)使故障電(dian)(dian)(dian)(dian)流幅值下降；當處于(yu)低電(dian)(dian)(dian)(dian)平時(shi)，第一儲(chu)(chu)能(neng)(neng)(neng)(neng)電(dian)(dian)(dian)(dian)容(rong)停止放電(dian)(dian)(dian)(dian)，只有第二儲(chu)(chu)能(neng)(neng)(neng)(neng)電(dian)(dian)(dian)(dian)容(rong)單(dan)(dan)獨放電(dian)(dian)(dian)(dian)，通(tong)過(guo)換(huan)向(xiang)(xiang)單(dan)(dan)元和耦合(he)電(dian)(dian)(dian)(dian)感的作用(yong)在主通(tong)流回路(lu)中(zhong)注(zhu)入(ru)幅值低于(yu)直(zhi)(zhi)(zhi)流母(mu)線(xian)但極性與(yu)直(zhi)(zhi)(zhi)流母(mu)線(xian)相反的電(dian)(dian)(dian)(dian)壓(ya)，使得(de)故障電(dian)(dian)(dian)(dian)流的幅值能(neng)(neng)(neng)(neng)夠(gou)得(de)以緩慢增加。

34、所述的(de)(de)雙(shuang)向直(zhi)流(liu)(liu)(liu)(liu)故(gu)(gu)障中(zhong)斷(duan)裝置對正向故(gu)(gu)障部(bu)分進行無弧隔離時首先(xian)判(pan)(pan)斷(duan)主(zhu)(zhu)通(tong)(tong)(tong)流(liu)(liu)(liu)(liu)回(hui)(hui)路(lu)中(zhong)的(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)iload是否超過(guo)了所預(yu)設的(de)(de)動(dong)作(zuo)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)閾值(zhi)，如果(guo)未大于(yu)(yu)(yu)，則(ze)(ze)(ze)(ze)直(zhi)流(liu)(liu)(liu)(liu)斷(duan)路(lu)器工作(zuo)在待(dai)機(ji)狀態；若(ruo)(ruo)(ruo)大于(yu)(yu)(yu)，則(ze)(ze)(ze)(ze)對第(di)(di)(di)一(yi)全控(kong)(kong)(kong)型(xing)(xing)功(gong)率器件(jian)、第(di)(di)(di)二全控(kong)(kong)(kong)型(xing)(xing)功(gong)率器件(jian)、第(di)(di)(di)一(yi)半控(kong)(kong)(kong)型(xing)(xing)功(gong)率器件(jian)、第(di)(di)(di)三半控(kong)(kong)(kong)型(xing)(xing)功(gong)率器件(jian)施(shi)加導通(tong)(tong)(tong)信號(hao)(hao)，迫(po)使故(gu)(gu)障電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)開(kai)始下(xia)降；再(zai)判(pan)(pan)斷(duan)故(gu)(gu)障電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)是否小于(yu)(yu)(yu)所預(yu)調制(zhi)紋(wen)(wen)波(bo)(bo)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)(de)波(bo)(bo)谷值(zhi)itro，若(ruo)(ruo)(ruo)不成(cheng)立(li)(li)，則(ze)(ze)(ze)(ze)保持(chi)上一(yi)狀態；若(ruo)(ruo)(ruo)成(cheng)立(li)(li)，則(ze)(ze)(ze)(ze)對第(di)(di)(di)一(yi)全控(kong)(kong)(kong)型(xing)(xing)功(gong)率器件(jian)施(shi)加關(guan)(guan)(guan)斷(duan)信號(hao)(hao)，則(ze)(ze)(ze)(ze)故(gu)(gu)障電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)開(kai)始回(hui)(hui)升(sheng)；再(zai)判(pan)(pan)斷(duan)故(gu)(gu)障電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)是否大于(yu)(yu)(yu)所預(yu)調制(zhi)的(de)(de)紋(wen)(wen)波(bo)(bo)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)(de)波(bo)(bo)峰值(zhi)，若(ruo)(ruo)(ruo)不成(cheng)立(li)(li)，則(ze)(ze)(ze)(ze)保持(chi)上一(yi)狀態；若(ruo)(ruo)(ruo)成(cheng)立(li)(li)；則(ze)(ze)(ze)(ze)導通(tong)(tong)(tong)第(di)(di)(di)一(yi)全控(kong)(kong)(kong)型(xing)(xing)功(gong)率器件(jian)，致(zhi)使故(gu)(gu)障電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)開(kai)始下(xia)降；再(zai)判(pan)(pan)斷(duan)主(zhu)(zhu)通(tong)(tong)(tong)流(liu)(liu)(liu)(liu)回(hui)(hui)路(lu)中(zhong)的(de)(de)機(ji)械開(kai)關(guan)(guan)(guan)是否關(guan)(guan)(guan)閉，若(ruo)(ruo)(ruo)未關(guan)(guan)(guan)閉，則(ze)(ze)(ze)(ze)返(fan)回(hui)(hui)判(pan)(pan)斷(duan)故(gu)(gu)障電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)是否小于(yu)(yu)(yu)所預(yu)調制(zhi)紋(wen)(wen)波(bo)(bo)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)(de)波(bo)(bo)谷值(zhi)；若(ruo)(ruo)(ruo)成(cheng)立(li)(li)，則(ze)(ze)(ze)(ze)對第(di)(di)(di)一(yi)全控(kong)(kong)(kong)型(xing)(xing)功(gong)率器件(jian)和第(di)(di)(di)二全控(kong)(kong)(kong)型(xing)(xing)功(gong)率期器件(jian)施(shi)加關(guan)(guan)(guan)斷(duan)信號(hao)(hao)。

35、所述的(de)雙向直流(liu)(liu)(liu)(liu)故障(zhang)(zhang)(zhang)(zhang)(zhang)中斷裝置對(dui)(dui)正向故障(zhang)(zhang)(zhang)(zhang)(zhang)部分進(jin)行無弧隔離時首先判(pan)斷主(zhu)通流(liu)(liu)(liu)(liu)回(hui)路(lu)中的(de)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)iload是否小于(yu)(yu)(yu)了所預(yu)(yu)(yu)設的(de)動作電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)閾值(zhi)(zhi)，如果未小于(yu)(yu)(yu)，則(ze)直流(liu)(liu)(liu)(liu)斷路(lu)器(qi)(qi)(qi)工作在待機狀(zhuang)態(tai)(tai)；若(ruo)大于(yu)(yu)(yu)，則(ze)對(dui)(dui)第(di)(di)(di)一全(quan)(quan)控型(xing)(xing)(xing)(xing)功(gong)(gong)率(lv)器(qi)(qi)(qi)件、第(di)(di)(di)二(er)全(quan)(quan)控型(xing)(xing)(xing)(xing)功(gong)(gong)率(lv)器(qi)(qi)(qi)件、第(di)(di)(di)二(er)半(ban)控型(xing)(xing)(xing)(xing)功(gong)(gong)率(lv)器(qi)(qi)(qi)件、第(di)(di)(di)四(si)半(ban)控型(xing)(xing)(xing)(xing)功(gong)(gong)率(lv)器(qi)(qi)(qi)件施加(jia)導通信(xin)號，迫使(shi)故障(zhang)(zhang)(zhang)(zhang)(zhang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)開始下降；再判(pan)斷故障(zhang)(zhang)(zhang)(zhang)(zhang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)是否大于(yu)(yu)(yu)所預(yu)(yu)(yu)調制紋(wen)(wen)波(bo)(bo)(bo)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)波(bo)(bo)(bo)峰值(zhi)(zhi)icre，若(ruo)不成(cheng)立，則(ze)保持上(shang)一狀(zhuang)態(tai)(tai)；若(ruo)成(cheng)立，則(ze)對(dui)(dui)第(di)(di)(di)一全(quan)(quan)控型(xing)(xing)(xing)(xing)功(gong)(gong)率(lv)器(qi)(qi)(qi)件施加(jia)關(guan)斷信(xin)號，則(ze)故障(zhang)(zhang)(zhang)(zhang)(zhang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)開始下降；再判(pan)斷故障(zhang)(zhang)(zhang)(zhang)(zhang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)是否小于(yu)(yu)(yu)所預(yu)(yu)(yu)調制的(de)紋(wen)(wen)波(bo)(bo)(bo)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)波(bo)(bo)(bo)谷值(zhi)(zhi)itro，若(ruo)不成(cheng)立，則(ze)保持上(shang)一狀(zhuang)態(tai)(tai)；若(ruo)成(cheng)立，則(ze)導通第(di)(di)(di)一全(quan)(quan)控型(xing)(xing)(xing)(xing)功(gong)(gong)率(lv)器(qi)(qi)(qi)件，致使(shi)故障(zhang)(zhang)(zhang)(zhang)(zhang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)開始上(shang)升；再判(pan)斷主(zhu)通流(liu)(liu)(liu)(liu)回(hui)路(lu)中的(de)機械開關(guan)是否關(guan)閉，若(ruo)未關(guan)閉，則(ze)返(fan)回(hui)判(pan)斷故障(zhang)(zhang)(zhang)(zhang)(zhang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)是否大于(yu)(yu)(yu)所預(yu)(yu)(yu)調制紋(wen)(wen)波(bo)(bo)(bo)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)波(bo)(bo)(bo)峰值(zhi)(zhi)；若(ruo)成(cheng)立，則(ze)對(dui)(dui)第(di)(di)(di)一全(quan)(quan)控型(xing)(xing)(xing)(xing)功(gong)(gong)率(lv)器(qi)(qi)(qi)件和第(di)(di)(di)二(er)全(quan)(quan)控型(xing)(xing)(xing)(xing)功(gong)(gong)率(lv)期器(qi)(qi)(qi)件施加(jia)關(guan)斷信(xin)號。

36、作為本發明所述(shu)雙向直(zhi)流故障(zhang)中斷裝置的(de)控制方法的(de)一種優(you)選方案(an)，其中：所述(shu)充(chong)(chong)電(dian)回路的(de)第五半控型功率器(qi)件(jian)施加開通信號，通過第一分壓(ya)電(dian)阻(zu)、第二分壓(ya)電(dian)阻(zu)和第三分壓(ya)電(dian)阻(zu)對第一儲能(neng)電(dian)容和第二儲能(neng)電(dian)容進(jin)行(xing)充(chong)(chong)電(dian)，當儲能(neng)電(dian)容被完全充(chong)(chong)滿電(dian)后，第五半控型功率器(qi)件(jian)會自(zi)動關(guan)斷；

37、在第(di)一儲(chu)(chu)(chu)能(neng)電(dian)容和(he)第(di)二儲(chu)(chu)(chu)能(neng)電(dian)容充滿電(dian)后，通過第(di)一防逆流(liu)二極(ji)管和(he)第(di)二防逆流(liu)二極(ji)管的(de)作用(yong)，保(bao)證(zheng)第(di)一儲(chu)(chu)(chu)能(neng)電(dian)容和(he)第(di)二儲(chu)(chu)(chu)能(neng)電(dian)容中所儲(chu)(chu)(chu)存(cun)的(de)能(neng)量不會流(liu)失；

38、對(dui)于第一儲能電(dian)容(rong)和第二(er)儲能電(dian)容(rong)的充電(dian)是取自于直流母線(xian)，不需要額外的直流輔助電(dian)源，從(cong)而降低了(le)投入成本。

39、在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓注(zhu)入回路(lu)(lu)中的(de)(de)第三防(fang)逆流二(er)(er)極管(guan)是為了(le)防(fang)止在(zai)第一儲(chu)(chu)(chu)(chu)(chu)能(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容和(he)第二(er)(er)儲(chu)(chu)(chu)(chu)(chu)能(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容串聯放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)注(zhu)入幅值較高電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓時(shi)，放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)徑(jing)不(bu)(bu)經過(guo)換向單(dan)元和(he)耦合(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感而造(zao)成(cheng)第一儲(chu)(chu)(chu)(chu)(chu)能(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容的(de)(de)短路(lu)(lu)情(qing)況發(fa)生(sheng)；在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓注(zhu)入回路(lu)(lu)中的(de)(de)第四防(fang)逆流二(er)(er)極管(guan)是為了(le)防(fang)止在(zai)第一儲(chu)(chu)(chu)(chu)(chu)能(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容和(he)第二(er)(er)儲(chu)(chu)(chu)(chu)(chu)能(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容串聯放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)或第二(er)(er)儲(chu)(chu)(chu)(chu)(chu)能(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容單(dan)獨放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)，放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)徑(jing)不(bu)(bu)經過(guo)換向單(dan)元和(he)耦合(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感而造(zao)成(cheng)儲(chu)(chu)(chu)(chu)(chu)能(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容短路(lu)(lu)事(shi)故的(de)(de)發(fa)生(sheng)。

40、作為(wei)(wei)(wei)(wei)本(ben)發明所述(shu)雙向(xiang)直(zhi)流(liu)故障(zhang)中斷裝置(zhi)的(de)控制方(fang)(fang)法的(de)一種優選(xuan)方(fang)(fang)案，其中：所述(shu)的(de)第(di)(di)一儲(chu)能電(dian)(dian)容c1的(de)電(dian)(dian)壓(ya)(ya)(ya)為(wei)(wei)(wei)(wei)udc，第(di)(di)二(er)儲(chu)能電(dian)(dian)容c2的(de)電(dian)(dian)壓(ya)(ya)(ya)為(wei)(wei)(wei)(wei)其中udc為(wei)(wei)(wei)(wei)直(zhi)流(liu)母(mu)線(xian)電(dian)(dian)壓(ya)(ya)(ya)、uc2為(wei)(wei)(wei)(wei)第(di)(di)二(er)儲(chu)能電(dian)(dian)容的(de)預(yu)充(chong)電(dian)(dian)電(dian)(dian)壓(ya)(ya)(ya)、r1為(wei)(wei)(wei)(wei)第(di)(di)一分(fen)壓(ya)(ya)(ya)電(dian)(dian)阻、r2為(wei)(wei)(wei)(wei)第(di)(di)二(er)分(fen)壓(ya)(ya)(ya)電(dian)(dian)阻、r3為(wei)(wei)(wei)(wei)第(di)(di)三分(fen)壓(ya)(ya)(ya)電(dian)(dian)阻。

41、作為本發明所述雙向直流(liu)故障(zhang)中斷裝置的控制方法的一種(zhong)優(you)選方案(an)，其中：所述主通流(liu)回(hui)路中的故障(zhang)電流(liu)經過(guo)調制之后產生一段紋波電流(liu)時(shi)間窗口(kou)(kou)，在此時(shi)間窗口(kou)(kou)對機(ji)械開關(guan)ms施加關(guan)斷信號，實現(xian)對于故障(zhang)部(bu)分的無弧隔離。

42、本(ben)發明(ming)有(you)益效果為(wei)(wei):本(ben)發明(ming)提供(gong)了(le)一種雙(shuang)向直流(liu)(liu)故(gu)障中斷(duan)(duan)裝置及其控(kong)制方法(fa)用(yong)(yong)以實(shi)現對于(yu)直流(liu)(liu)短路(lu)(lu)故(gu)障的(de)(de)無弧隔離操作(zuo)，所(suo)述直流(liu)(liu)斷(duan)(duan)路(lu)(lu)器采用(yong)(yong)兩個儲(chu)能電容放電，通過(guo)換向單元和(he)耦合電感的(de)(de)作(zuo)用(yong)(yong)，在(zai)(zai)主(zhu)通流(liu)(liu)回(hui)路(lu)(lu)中注(zhu)入(ru)與直流(liu)(liu)母線極性相(xiang)反(fan)的(de)(de)電壓，能夠將故(gu)障電流(liu)(liu)調制成為(wei)(wei)在(zai)(zai)零點上下波動的(de)(de)紋波電流(liu)(liu)，為(wei)(wei)主(zhu)通流(liu)(liu)回(hui)路(lu)(lu)中的(de)(de)機械開(kai)關(guan)斷(duan)(duan)開(kai)提供(gong)了(le)較長的(de)(de)工作(zuo)時間(jian)窗口(kou)，在(zai)(zai)此時間(jian)窗口(kou)內斷(duan)(duan)開(kai)機械開(kai)關(guan)即可實(shi)現對于(yu)直流(liu)(liu)短路(lu)(lu)故(gu)障部分的(de)(de)無弧隔離。

43、(1)本發(fa)明是通(tong)(tong)(tong)過兩個儲(chu)能(neng)電容(rong)實現在(zai)主通(tong)(tong)(tong)流(liu)(liu)回(hui)(hui)路(lu)中(zhong)進行多電平的(de)注入。第一儲(chu)能(neng)電容(rong)和第二儲(chu)能(neng)電容(rong)串聯進行放電時(shi)，是在(zai)主通(tong)(tong)(tong)流(liu)(liu)回(hui)(hui)路(lu)中(zhong)注入極性與(yu)直流(liu)(liu)母線相反(fan)但(dan)幅(fu)值高原(yuan)直流(liu)(liu)母線的(de)電壓；第二儲(chu)能(neng)電容(rong)單獨放電時(shi)，是在(zai)主通(tong)(tong)(tong)流(liu)(liu)回(hui)(hui)路(lu)中(zhong)注入極性與(yu)直流(liu)(liu)母線相反(fan)但(dan)幅(fu)值低于直流(liu)(liu)母線的(de)電壓。

44、(2)本(ben)發明(ming)(ming)相比較于其他(ta)注入式直(zhi)流斷路器，本(ben)發明(ming)(ming)能夠(gou)在不顯著增(zeng)加(jia)投入成本(ben)的情況下(xia)實(shi)現對于雙(shuang)向(xiang)短(duan)路故障(zhang)的無弧隔離操作。

45、(3)本發明所(suo)使用的(de)儲能電(dian)容(rong)充(chong)電(dian)操作是直(zhi)接取自于(yu)直(zhi)流母線，而不需要配(pei)備(bei)額(e)外的(de)輔助(zhu)電(dian)源裝置，進一步降低了直(zhi)流斷(duan)路器的(de)投入成本。

46、(4)本發明所提出的故(gu)(gu)障電(dian)(dian)流調制(zhi)(zhi)，使(shi)得主通流回(hui)路(lu)中的故(gu)(gu)障電(dian)(dian)流可以被(bei)調制(zhi)(zhi)為(wei)在(zai)零點(dian)附(fu)近波(bo)動的高頻紋波(bo)電(dian)(dian)流，創造(zao)很(hen)多個直流電(dian)(dian)流過零點(dian)，在(zai)此紋波(bo)電(dian)(dian)流時(shi)間(jian)窗(chuang)口內斷開(kai)主通流回(hui)路(lu)中的機械(xie)開(kai)關(guan)ms即可實(shi)現對于(yu)直流短路(lu)故(gu)(gu)障部分(fen)的無弧切除。與傳統的混合式直流斷路(lu)器(qi)相(xiang)比，不需要機械(xie)開(kai)關(guan)ms與單個或者數(shu)個直流電(dian)(dian)流過零點(dian)精確配合，而降(jiang)低了對于(yu)機械(xie)開(kai)關(guan)ms的控制(zhi)(zhi)難(nan)度，其可靠性和穩定(ding)性更(geng)高。