變電站的主要作用是匯集和分配電能，然后根據用電需要進行電壓的轉換。在這個過程中，高壓開關柜具有舉足輕重的作用。所以高壓開關柜出現了毛病，不能正常運轉，對于變電站來說是個“劫難”。安徽得潤電氣專注高低壓開關柜30年，有足夠的技術資源和經驗來處理類似的問題，就讓得潤電氣為您分析高壓開關柜幾(ji)個(ge)故(gu)障形式，并支招該如何處(chu)理其(qi)故(gu)障。

變電(dian)(dian)站高壓(ya)(ya)開(kai)關(guan)柜常見(jian)故(gu)障表現形式主(zhu)要有正在(zai)運行設備突然跳閘(zha)(zha)和電(dian)(dian)動(dong)手動(dong)不(bu)(bu)能(neng)(neng)分(fen)合(he)閘(zha)(zha)。高壓(ya)(ya)開(kai)關(guan)柜常見(jian)故(gu)障類型可(ke)分(fen)為電(dian)(dian)氣故(gu)障和機械故(gu)障兩(liang)類。電(dian)(dian)氣故(gu)障可(ke)以(yi)分(fen)為電(dian)(dian)動(dong)不(bu)(bu)能(neng)(neng)儲(chu)能(neng)(neng)、電(dian)(dian)動(dong)不(bu)(bu)能(neng)(neng)合(he)閘(zha)(zha)、電(dian)(dian)動(dong)不(bu)(bu)能(neng)(neng)分(fen)閘(zha)(zha)等。

一、高壓開關柜在運行(xing)中(zhong)突然跳閘故障的判斷(duan)和處理

1)故障現象(xiang)：這種故障原因是保護動(dong)作。高壓柜上裝有過流、速斷、瓦斯和溫度等保護。

2)判(pan)斷(duan)(duan)方法：判(pan)斷(duan)(duan)故障原因(yin)(yin)可以根(gen)據繼(ji)電(dian)器(qi)掉牌、遙信(xin)信(xin)息等(deng)情況進(jin)行(xing)判(pan)斷(duan)(duan)。在高壓柜中瓦斯(si)、溫度保(bao)護動(dong)作(zuo)(zuo)(zuo)后(hou)都有相應的(de)信(xin)號繼(ji)電(dian)器(qi)掉牌指示。過流(liu)繼(ji)電(dian)器(qi)(GL型)動(dong)作(zuo)(zuo)(zuo)時(shi)不能區分(fen)(fen)過流(liu)和速斷(duan)(duan)。在定(ding)時(shi)限(xian)保(bao)護電(dian)路中過流(liu)和速斷(duan)(duan)分(fen)(fen)別由(you)兩塊(JL型)電(dian)流(liu)繼(ji)電(dian)器(qi)保(bao)護。繼(ji)電(dian)器(qi)動(dong)作(zuo)(zuo)(zuo)時(shi)紅色的(de)發光二極管亮(liang)，可以明確(que)判(pan)斷(duan)(duan)動(dong)作(zuo)(zuo)(zuo)原因(yin)(yin)。

3)處理方法：過(guo)流(liu)繼(ji)電(dian)器(qi)(qi)(qi)(qi)動(dong)作(zuo)使開(kai)關(guan)跳閘，是(shi)因為線路過(guo)負(fu)荷(he)(he)。在送(song)(song)電(dian)前應當與用戶協商減少負(fu)荷(he)(he)防止(zhi)送(song)(song)電(dian)后(hou)(hou)再次跳閘。速斷(duan)跳閘時，應當檢(jian)查母線、變(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)、線路。找到(dao)短路故(gu)障(zhang)點(dian)，將故(gu)障(zhang)排除后(hou)(hou)方可(ke)(ke)(ke)送(song)(song)電(dian)。過(guo)流(liu)和速斷(duan)保護(hu)動(dong)作(zuo)使開(kai)關(guan)跳閘后(hou)(hou)繼(ji)電(dian)器(qi)(qi)(qi)(qi)可(ke)(ke)(ke)以(yi)(yi)復位，利用這一特點(dian)可(ke)(ke)(ke)以(yi)(yi)和溫(wen)(wen)度(du)(du)、瓦(wa)(wa)斯保護(hu)區分。變(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)發生內部故(gu)障(zhang)或過(guo)負(fu)荷(he)(he)時瓦(wa)(wa)斯和溫(wen)(wen)度(du)(du)保護(hu)動(dong)作(zuo)。如(ru)果(guo)(guo)是(shi)變(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)內部故(gu)障(zhang)使重瓦(wa)(wa)斯動(dong)作(zuo)，必(bi)須檢(jian)修變(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)。如(ru)果(guo)(guo)是(shi)新(xin)移動(dong)、加油的(de)變(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)發生輕瓦(wa)(wa)斯動(dong)作(zuo)，可(ke)(ke)(ke)以(yi)(yi)將內部氣體放(fang)出后(hou)(hou)繼(ji)續(xu)投入運行(xing)。溫(wen)(wen)度(du)(du)保護(hu)動(dong)作(zuo)是(shi)因為變(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)溫(wen)(wen)度(du)(du)超過(guo)整(zheng)定(ding)(ding)值。如(ru)果(guo)(guo)定(ding)(ding)值整(zheng)定(ding)(ding)正確，必(bi)須設法降低(di)(di)(di)變(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)的(de)溫(wen)(wen)度(du)(du)。可(ke)(ke)(ke)以(yi)(yi)通風降低(di)(di)(di)環境溫(wen)(wen)度(du)(du)，也可(ke)(ke)(ke)以(yi)(yi)減少負(fu)荷(he)(he)減低(di)(di)(di)變(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)溫(wen)(wen)升(sheng)。如(ru)果(guo)(guo)整(zheng)定(ding)(ding)值偏小，可(ke)(ke)(ke)以(yi)(yi)將整(zheng)定(ding)(ding)值調大。通過(guo)以(yi)(yi)上(shang)幾個方法使溫(wen)(wen)度(du)(du)接點(dian)打開(kai)，開(kai)關(guan)才能送(song)(song)電(dian)。

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