本(ben)實用新型(xing)涉(she)及10kV 輸(shu)配電(dian)網設備(bei)，尤其涉(she)及一種戶外型(xing)供電(dian)兼零序電(dian)壓測(ce)量(liang)裝置。

背景技術：

單相(xiang)(xiang)接(jie)地故障(zhang)是10kV 輸配電(dian)(dian)網最為常見的故障(zhang)類型, 單相(xiang)(xiang)接(jie)地后引(yin)起系統零(ling)序(xu)電(dian)(dian)壓升高(gao), 運行中(zhong)曾(ceng)多次(ci)出現由于線(xian)路(lu)單相(xiang)(xiang)接(jie)地引(yin)起相(xiang)(xiang)鄰變(bian)壓器中(zhong)性點(dian)間隙擊穿導致繼電(dian)(dian)保(bao)護失(shi)去選(xuan)擇性的案例。目前具(ju)備供電(dian)(dian)兼零(ling)序(xu)電(dian)(dian)壓測量(liang)功(gong)能的主(zhu)要為三相(xiang)(xiang)一體式電(dian)(dian)磁式電(dian)(dian)壓互感器。

電磁式(shi)電壓互感器的阻(zu)抗(kang)很小，一(yi)旦副(fu)邊發生短路，電流將急劇增長而燒(shao)毀線圈(quan)。為此，零序電壓互感器的原(yuan)邊接有(you)熔(rong)斷器，副(fu)邊二次電壓回路有(you)一(yi)相須可靠接地，以(yi)免原(yuan)、副(fu)邊絕(jue)緣(yuan)損毀時(shi)，副(fu)邊出現對地高電位而造(zao)成人身和(he)設備事故。

存在(zai)鐵心飽和諧(xie)振過電(dian)壓(ya)問(wen)題。由于我國10kV 配電(dian)網(wang)主要是中(zhong)(zhong)(zhong)性點(dian)不接地(di)( 或(huo)經消弧線圈接地(di)) 系統，除了變電(dian)站(zhan)母線上安(an)裝(zhuang)(zhuang)一(yi)臺三相五柱式(shi)電(dian)磁式(shi)電(dian)壓(ya)互(hu)感器( 原邊繞組中(zhong)(zhong)(zhong)性點(dian)接地(di))，一(yi)般不允(yun)許在(zai)配電(dian)線路(lu)上大(da)量安(an)裝(zhuang)(zhuang)中(zhong)(zhong)(zhong)性點(dian)接地(di)的電(dian)磁式(shi)電(dian)壓(ya)互(hu)感器，以避免因(yin)多個中(zhong)(zhong)(zhong)性點(dian)接地(di)而引(yin)起(qi)線路(lu)諧(xie)振過電(dian)壓(ya)事故。

在實際應用時，線(xian)路開關配套的饋線(xian)終(zhong)端單元(FTU)、開閉所終(zhong)端單元(DTU)、故障電流指示(shi)裝置(FCI) 等故障檢測裝置只(zhi)能通(tong)過零序電流互(hu)感器的電流大(da)小來判斷接地故障，測量不到零序電壓，計算不出零序電流的方向，容易誤報警(jing)或漏報警(jing)，準(zhun)確性(xing)不高。

技術實現要素：

為了(le)克服上述現有技術的(de)不足，本實用(yong)新(xin)型提(ti)供了(le)一(yi)種無需(xu)使用(yong)者貼近墻(qiang)面或門面就可以直觀，清晰的(de)觀察到所需(xu)位置或空(kong)間的(de)情況的(de)戶外型供電(dian)(dian)兼零序電(dian)(dian)壓測量裝置。

為了實(shi)現(xian)上述(shu)目的，本實(shi)用(yong)新型采用(yong)的技術方案是：

一(yi)種(zhong)戶(hu)外型供電(dian)(dian)兼零序(xu)電(dian)(dian)壓(ya)(ya)測量裝置，包(bao)括(kuo)一(yi)固(gu)封(feng)底(di)(di)座(zuo)，所(suo)(suo)述(shu)(shu)(shu)(shu)固(gu)封(feng)底(di)(di)座(zuo)內澆(jiao)注有(you)(you)電(dian)(dian)壓(ya)(ya)測量組件(jian)，所(suo)(suo)述(shu)(shu)(shu)(shu)電(dian)(dian)壓(ya)(ya)測量組件(jian)包(bao)括(kuo)一(yi)電(dian)(dian)容式(shi)電(dian)(dian)壓(ya)(ya)傳感器(qi)，所(suo)(suo)述(shu)(shu)(shu)(shu)電(dian)(dian)容式(shi)電(dian)(dian)壓(ya)(ya)傳感器(qi)的接(jie)線端分別連(lian)接(jie)有(you)(you)熔(rong)(rong)管(guan)(guan)A、熔(rong)(rong)管(guan)(guan)B和熔(rong)(rong)管(guan)(guan)C，所(suo)(suo)述(shu)(shu)(shu)(shu)熔(rong)(rong)管(guan)(guan)A、熔(rong)(rong)管(guan)(guan)B和熔(rong)(rong)管(guan)(guan)C的輸(shu)入(ru)端分別連(lian)接(jie)有(you)(you)高(gao)(gao)(gao)(gao)壓(ya)(ya)端子(zi)A、高(gao)(gao)(gao)(gao)壓(ya)(ya)端子(zi)B和高(gao)(gao)(gao)(gao)壓(ya)(ya)端子(zi)C，所(suo)(suo)述(shu)(shu)(shu)(shu)有(you)(you)高(gao)(gao)(gao)(gao)壓(ya)(ya)端子(zi)A、高(gao)(gao)(gao)(gao)壓(ya)(ya)端子(zi)B和高(gao)(gao)(gao)(gao)壓(ya)(ya)端子(zi)C設置在所(suo)(suo)述(shu)(shu)(shu)(shu)固(gu)封(feng)底(di)(di)座(zuo)的上(shang)(shang)端，所(suo)(suo)述(shu)(shu)(shu)(shu)熔(rong)(rong)管(guan)(guan)A的輸(shu)入(ru)端與(yu)熔(rong)(rong)管(guan)(guan)B的輸(shu)入(ru)端之間(jian)連(lian)接(jie)有(you)(you)一(yi)單(dan)相PT，所(suo)(suo)述(shu)(shu)(shu)(shu)固(gu)封(feng)底(di)(di)座(zuo)上(shang)(shang)設置有(you)(you)第一(yi)接(jie)地端子(zi)，所(suo)(suo)述(shu)(shu)(shu)(shu)電(dian)(dian)容式(shi)電(dian)(dian)壓(ya)(ya)傳感器(qi)的輸(shu)出端與(yu)所(suo)(suo)述(shu)(shu)(shu)(shu)第一(yi)接(jie)地端子(zi)連(lian)接(jie)。

作為上述(shu)方案(an)的(de)進一步改進，所述(shu)電(dian)(dian)(dian)容(rong)(rong)(rong)式電(dian)(dian)(dian)壓(ya)(ya)傳感器包(bao)括高(gao)壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)A、高(gao)壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)B和(he)高(gao)壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)C，所述(shu)高(gao)壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)A、高(gao)壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)B和(he)高(gao)壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)C的(de)輸入(ru)端(duan)(duan)(duan)分別與(yu)所述(shu)熔管(guan)A、熔管(guan)B和(he)熔管(guan)C的(de)輸出(chu)(chu)端(duan)(duan)(duan)連接(jie)，所述(shu)高(gao)壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)A、高(gao)壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)B和(he)高(gao)壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)C的(de)輸出(chu)(chu)端(duan)(duan)(duan)并聯至一低壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)的(de)輸入(ru)端(duan)(duan)(duan)，所述(shu)低壓(ya)(ya)電(dian)(dian)(dian)容(rong)(rong)(rong)的(de)輸出(chu)(chu)端(duan)(duan)(duan)與(yu)所述(shu)第一接(jie)地(di)端(duan)(duan)(duan)子(zi)連接(jie)。

作為上述(shu)方案的進(jin)一步改進(jin)，所述(shu)固(gu)封底座的下表面(mian)設(she)置有(you)第一低(di)壓(ya)端(duan)(duan)子(zi)，第二低(di)壓(ya)端(duan)(duan)子(zi)，第三低(di)壓(ya)端(duan)(duan)子(zi)與第四低(di)壓(ya)端(duan)(duan)子(zi)。

作為上(shang)述方案的(de)進(jin)一步改進(jin)，所(suo)述單相PT設(she)置有高壓(ya)線(xian)(xian)圈抽(chou)(chou)頭(tou)(tou)A、高壓(ya)線(xian)(xian)圈抽(chou)(chou)頭(tou)(tou)B、低(di)壓(ya)線(xian)(xian)圈抽(chou)(chou)頭(tou)(tou)A和(he)(he)(he)低(di)壓(ya)線(xian)(xian)圈抽(chou)(chou)頭(tou)(tou)B，所(suo)述高壓(ya)線(xian)(xian)圈抽(chou)(chou)頭(tou)(tou)A和(he)(he)(he)高壓(ya)線(xian)(xian)圈抽(chou)(chou)頭(tou)(tou)B分別(bie)連(lian)接至所(suo)述熔(rong)管A和(he)(he)(he)熔(rong)管B的(de)輸入端，所(suo)述低(di)壓(ya)線(xian)(xian)圈抽(chou)(chou)頭(tou)(tou)A和(he)(he)(he)低(di)壓(ya)線(xian)(xian)圈抽(chou)(chou)頭(tou)(tou)B分別(bie)與所(suo)述第(di)三低(di)壓(ya)端子和(he)(he)(he)第(di)四低(di)壓(ya)端子連(lian)接。

作為上(shang)述(shu)方案(an)的進(jin)一步改進(jin)，所述(shu)固(gu)封底(di)座(zuo)的下(xia)表面設置(zhi)有安(an)裝(zhuang)座(zuo)。

本實用新型的(de)有益(yi)效果：

本(ben)實用新型(xing)一(yi)種戶外型(xing)供電(dian)(dian)兼零序電(dian)(dian)壓測量(liang)裝置，集成有零序電(dian)(dian)壓測量(liang)功(gong)能和(he)供電(dian)(dian)功(gong)能，通過(guo)熔管和(he)電(dian)(dian)容進行零序電(dian)(dian)壓的測量(liang)，阻抗高(gao)，不容易發(fa)生短路故障和(he)諧振過(guo)電(dian)(dian)壓，對電(dian)(dian)力系統影響小；連接(jie)方便，組合式的結(jie)構(gou)體積(ji)小、重量(liang)輕，方便戶外安裝與檢(jian)修，經(jing)濟實用性更(geng)好。

附圖說明

為(wei)了更清楚地說(shuo)明(ming)本實(shi)用新型實(shi)施(shi)例(li)(li)中的(de)(de)技(ji)術方案，下(xia)(xia)面將對實(shi)施(shi)例(li)(li)描述中所需要使用的(de)(de)附圖(tu)作簡單說(shuo)明(ming)。顯然，所描述的(de)(de)附圖(tu)只(zhi)是(shi)本實(shi)用新型的(de)(de)一部分實(shi)施(shi)例(li)(li)，而不是(shi)全部實(shi)施(shi)例(li)(li)，本領域(yu)的(de)(de)技(ji)術人員在不付出創(chuang)造性勞動的(de)(de)前(qian)提下(xia)(xia)，還可以根據這些(xie)附圖(tu)獲得的(de)(de)其他設(she)計方案和附圖(tu)：

圖1為(wei)本實用新(xin)型較佳實施例電氣原理圖；

圖2為(wei)本(ben)實(shi)用新型(xing)較(jiao)佳實(shi)施例主視(shi)圖；

圖3為本實用(yong)新型較(jiao)佳(jia)實施例仰(yang)視(shi)圖；

圖4為本實用新(xin)型(xing)較佳實施(shi)例俯(fu)視圖。

具體實施方式

以(yi)下將(jiang)結(jie)合(he)實(shi)(shi)施(shi)例(li)和(he)附圖對本實(shi)(shi)用(yong)新(xin)型的(de)構思、具體結(jie)構及產生的(de)技術效果進行(xing)清(qing)楚、完整地(di)描(miao)(miao)述，以(yi)充分(fen)地(di)理解本實(shi)(shi)用(yong)新(xin)型的(de)目的(de)、特征和(he)效果。顯(xian)然，所描(miao)(miao)述的(de)實(shi)(shi)施(shi)例(li)只(zhi)是本實(shi)(shi)用(yong)新(xin)型的(de)一部分(fen)實(shi)(shi)施(shi)例(li)，而不是全部實(shi)(shi)施(shi)例(li)，基于本實(shi)(shi)用(yong)新(xin)型的(de)實(shi)(shi)施(shi)例(li)，本領(ling)域(yu)的(de)技術人員在不付出創(chuang)造(zao)性勞動的(de)前提下所獲得的(de)其他(ta)實(shi)(shi)施(shi)例(li)，均屬于本實(shi)(shi)用(yong)新(xin)型保(bao)護的(de)范圍。

參照圖1至圖4，一(yi)種戶外型供電兼(jian)零序電壓(ya)測量(liang)(liang)裝置，包括(kuo)一(yi)固封底(di)(di)(di)座(zuo)6，所(suo)(suo)述(shu)(shu)(shu)(shu)固封底(di)(di)(di)座(zuo)6內澆注有電壓(ya)測量(liang)(liang)組件(jian)，所(suo)(suo)述(shu)(shu)(shu)(shu)固封底(di)(di)(di)座(zuo)6的(de)下表面設置有安裝座(zuo)7，所(suo)(suo)述(shu)(shu)(shu)(shu)安裝座(zuo)7用來固定在戶外電網(wang)上(shang)。所(suo)(suo)述(shu)(shu)(shu)(shu)電壓(ya)測量(liang)(liang)組件(jian)包括(kuo)一(yi)電容(rong)式電壓(ya)傳感器(qi)1，所(suo)(suo)述(shu)(shu)(shu)(shu)電容(rong)式電壓(ya)傳感器(qi)1的(de)接(jie)線端(duan)(duan)(duan)分別(bie)連接(jie)有熔(rong)(rong)(rong)管(guan)A2、熔(rong)(rong)(rong)管(guan)B3和(he)熔(rong)(rong)(rong)管(guan)C4，所(suo)(suo)述(shu)(shu)(shu)(shu)熔(rong)(rong)(rong)管(guan)A2、熔(rong)(rong)(rong)管(guan)B3和(he)熔(rong)(rong)(rong)管(guan)C4的(de)輸入端(duan)(duan)(duan)分別(bie)連接(jie)有高(gao)壓(ya)端(duan)(duan)(duan)子(zi)A61、高(gao)壓(ya)端(duan)(duan)(duan)子(zi)B62和(he)高(gao)壓(ya)端(duan)(duan)(duan)子(zi)C63，所(suo)(suo)述(shu)(shu)(shu)(shu)有高(gao)壓(ya)端(duan)(duan)(duan)子(zi)A61、高(gao)壓(ya)端(duan)(duan)(duan)子(zi)B62和(he)高(gao)壓(ya)端(duan)(duan)(duan)子(zi)C63設置在所(suo)(suo)述(shu)(shu)(shu)(shu)固封底(di)(di)(di)座(zuo)6的(de)上(shang)端(duan)(duan)(duan)，所(suo)(suo)述(shu)(shu)(shu)(shu)熔(rong)(rong)(rong)管(guan)A2的(de)輸入端(duan)(duan)(duan)與(yu)熔(rong)(rong)(rong)管(guan)B3的(de)輸入端(duan)(duan)(duan)之間連接(jie)有一(yi)單相PT5，所(suo)(suo)述(shu)(shu)(shu)(shu)固封底(di)(di)(di)座(zuo)上(shang)設置有第(di)一(yi)接(jie)地(di)端(duan)(duan)(duan)子(zi)66，所(suo)(suo)述(shu)(shu)(shu)(shu)電容(rong)式電壓(ya)傳感器(qi)的(de)輸出端(duan)(duan)(duan)與(yu)所(suo)(suo)述(shu)(shu)(shu)(shu)第(di)一(yi)接(jie)地(di)端(duan)(duan)(duan)子(zi)66連接(jie)。

所述(shu)電(dian)(dian)(dian)(dian)容(rong)式電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)傳(chuan)感(gan)器(qi)包括高(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)A11、高(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)B12和高(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)C13，所述(shu)高(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)A11、高(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)B12和高(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)C13的輸(shu)入(ru)(ru)端分(fen)別(bie)與所述(shu)熔(rong)管(guan)A2、熔(rong)管(guan)B3和熔(rong)管(guan)C4的輸(shu)出端連接，所述(shu)高(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)A11、高(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)B12和高(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)C13的輸(shu)出端并聯至(zhi)一低(di)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)14的輸(shu)入(ru)(ru)端，所述(shu)低(di)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)容(rong)14的輸(shu)出端與所述(shu)第一接地端子66連接。

所(suo)(suo)(suo)述(shu)固封(feng)底座(zuo)6的下表(biao)面設(she)置有(you)第(di)(di)一(yi)低(di)壓(ya)(ya)(ya)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)64，第(di)(di)二低(di)壓(ya)(ya)(ya)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)65，第(di)(di)三低(di)壓(ya)(ya)(ya)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)67與(yu)第(di)(di)四低(di)壓(ya)(ya)(ya)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)68，所(suo)(suo)(suo)述(shu)單相PT5設(she)置有(you)高(gao)(gao)壓(ya)(ya)(ya)線(xian)圈(quan)抽頭(tou)(tou)A51、高(gao)(gao)壓(ya)(ya)(ya)線(xian)圈(quan)抽頭(tou)(tou)B52、低(di)壓(ya)(ya)(ya)線(xian)圈(quan)抽頭(tou)(tou)A53和低(di)壓(ya)(ya)(ya)線(xian)圈(quan)抽頭(tou)(tou)B54，所(suo)(suo)(suo)述(shu)高(gao)(gao)壓(ya)(ya)(ya)線(xian)圈(quan)抽頭(tou)(tou)A51和高(gao)(gao)壓(ya)(ya)(ya)線(xian)圈(quan)抽頭(tou)(tou)B52分(fen)別連接至所(suo)(suo)(suo)述(shu)熔(rong)(rong)管A2和熔(rong)(rong)管B3的輸入端(duan)(duan)(duan)(duan)(duan)，所(suo)(suo)(suo)述(shu)低(di)壓(ya)(ya)(ya)線(xian)圈(quan)抽頭(tou)(tou)A53和低(di)壓(ya)(ya)(ya)線(xian)圈(quan)抽頭(tou)(tou)B54分(fen)別與(yu)所(suo)(suo)(suo)述(shu)第(di)(di)三低(di)壓(ya)(ya)(ya)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)67和第(di)(di)四低(di)壓(ya)(ya)(ya)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)68連接。所(suo)(suo)(suo)述(shu)接地(di)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)A66接地(di)，則低(di)壓(ya)(ya)(ya)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)A64與(yu)低(di)壓(ya)(ya)(ya)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)B65之(zhi)間(jian)的電壓(ya)(ya)(ya)即零序(xu)電壓(ya)(ya)(ya)，低(di)壓(ya)(ya)(ya)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)C67與(yu)低(di)壓(ya)(ya)(ya)端(duan)(duan)(duan)(duan)(duan)子(zi)(zi)D68之(zhi)間(jian)的電壓(ya)(ya)(ya)即線(xian)電壓(ya)(ya)(ya)，線(xian)電壓(ya)(ya)(ya)可用于(yu)給元件(jian)供電。

與(yu)電(dian)(dian)(dian)(dian)(dian)磁式電(dian)(dian)(dian)(dian)(dian)壓(ya)互(hu)感器相(xiang)比，電(dian)(dian)(dian)(dian)(dian)子式零序電(dian)(dian)(dian)(dian)(dian)壓(ya)互(hu)感器阻抗高，不容易發生短路故障和諧(xie)振過電(dian)(dian)(dian)(dian)(dian)壓(ya)，對電(dian)(dian)(dian)(dian)(dian)力系(xi)統(tong)影(ying)響小，電(dian)(dian)(dian)(dian)(dian)壓(ya)測量組件的體積小、重量輕，方便安裝與(yu)檢修(xiu)，經濟實用性更(geng)好。

以上是對本實(shi)(shi)用(yong)新(xin)型的(de)(de)(de)較佳(jia)實(shi)(shi)施(shi)(shi)例進行了(le)具體說明，但本實(shi)(shi)用(yong)新(xin)型創造(zao)并不(bu)限(xian)于所(suo)述實(shi)(shi)施(shi)(shi)例，熟悉本領域的(de)(de)(de)技術人員在不(bu)違背(bei)本實(shi)(shi)用(yong)新(xin)型精(jing)神的(de)(de)(de)前提下還可作出種種的(de)(de)(de)等同變型或替換，這(zhe)些等同的(de)(de)(de)變型或替換均(jun)包含(han)在本申請權利(li)要(yao)求所(suo)限(xian)定的(de)(de)(de)范圍內(nei)。