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首頁 > 技術文章 > 三相繼電保護測試儀操作有哪些注意事項?
三相繼電保護測試儀操作有哪些注意事項?
更新日期:2020-05-06      瀏覽次數:681

三相繼電保護測試(shi)(shi)儀(也稱為微機繼電器(qi)保護測試(shi)(shi)儀)是能夠向(xiang)值班人員發(fa)出報警信號(hao)或(huo)直接向(xiang)控(kong)制斷路器(qi)發(fa)出跳閘指令的自動方法(fa)和設備,在電力系(xi)統的元件和系(xi)統發(fa)生故(gu)(gu)障或(huo)危機的安全運行時,消除故(gu)(gu)障或(huo)停止風(feng)險事(shi)件。

在(zai)過(guo)去的(de)意義(yi)上,這種(zhong)自(zi)動化方法是(shi)工廠硬件設備完成,用戶維(wei)護(hu)電(dian)(dian)(dian)(dian)源(yuan)部(bu)件(發(fa)電(dian)(dian)(dian)(dian)機、變(bian)壓(ya)器(qi)、線路等),俗稱(cheng)(cheng)繼電(dian)(dian)(dian)(dian)器(qi)維(wei)護(hu)設備,用于電(dian)(dian)(dian)(dian)力(li)系(xi)(xi)(xi)(xi)統維(wei)護(hu),一般(ban)稱(cheng)(cheng)為電(dian)(dian)(dian)(dian)力(li)系(xi)(xi)(xi)(xi)統安全自(zi)動化設備。 也就是(shi)說(shuo),三相繼電(dian)(dian)(dian)(dian)保(bao)護(hu)測試儀是(shi)電(dian)(dian)(dian)(dian)力(li)系(xi)(xi)(xi)(xi)統的(de)完整(zheng)運(yun)行(xing)(xing),反(fan)映(ying)了電(dian)(dian)(dian)(dian)力(li)系(xi)(xi)(xi)(xi)統電(dian)(dian)(dian)(dian)氣元件的(de)故障和異(yi)常運(yun)行(xing)(xing),作用于斷(duan)路器(qi)的(de)跳閘和信號發(fa)送,避免了長期大面積(ji)停(ting)電(dian)(dian)(dian)(dian)的(de)嚴重系(xi)(xi)(xi)(xi)統事(shi)故,如系(xi)(xi)(xi)(xi)統失(shi)穩、電(dian)(dian)(dian)(dian)壓(ya)崩潰、頻率崩潰等。

電力(li)系統中的(de)(de)電源單元(yuan)(如發(fa)電機、線(xian)路(lu)等(deng))或電力(li)系統本(ben)身(shen)威脅電力(li)系統的(de)(de)安(an)全運行時,可(ke)以立即向值(zhi)班人員發(fa)布(bu)正信號或向控制斷路(lu)器發(fa)布(bu)跳閘指(zhi)令(ling),停止這些東西和設備的(de)(de)運行。 工廠完成這種自(zi)動化的(de)(de)方法被稱(cheng)為繼電保護維護設備。

可(ke)(ke)(ke)靠(kao)(kao)性(xing)是指一(yi)個部件、設(she)(she)備(bei)或系(xi)統在一(yi)定時間內完(wan)成適當正常功能的能力(li)。 可(ke)(ke)(ke)靠(kao)(kao)性(xing)工(gong)程(cheng)涉及零部件失控數據的處理與計算、系(xi)統可(ke)(ke)(ke)靠(kao)(kao)性(xing)的定量評估、運行維護、經濟(ji)性(xing)與可(ke)(ke)(ke)靠(kao)(kao)性(xing)的協調等。 對于繼電器維護設(she)(she)備(bei),其可(ke)(ke)(ke)靠(kao)(kao)性(xing)意味著設(she)(she)備(bei)規則(ze)范圍內有故障,不應該(gai)拒絕(jue)其工(gong)作,維護不宜(yi)工(gong)作的其他情(qing)況,不應該(gai)超過錯誤的工(gong)作。

三相(xiang)繼(ji)(ji)電(dian)(dian)(dian)(dian)保(bao)護(hu)(hu)測試儀的(de)(de)(de)(de)拒(ju)絕(jue)(jue)(jue)和(he)誤動(dong)(dong)嚴重危害(hai)電(dian)(dian)(dian)(dian)力(li)系(xi)統(tong)(tong)。 但(dan)是,提(ti)高兩(liang)者可(ke)靠(kao)(kao)性(xing)(xing)(xing)的(de)(de)(de)(de)方法通(tong)常(chang)彼此相(xiang)反(fan)。 繼(ji)(ji)電(dian)(dian)(dian)(dian)保(bao)護(hu)(hu)設(she)(she)備(bei)(bei)(bei)(bei)的(de)(de)(de)(de)可(ke)靠(kao)(kao)性(xing)(xing)(xing)比(bi)繼(ji)(ji)電(dian)(dian)(dian)(dian)保(bao)護(hu)(hu)設(she)(she)備(bei)(bei)(bei)(bei)的(de)(de)(de)(de)可(ke)靠(kao)(kao)性(xing)(xing)(xing)更重要(yao)。 例如,在(zai)系(xi)統(tong)(tong)有足(zu)夠旋轉(zhuan)余量(liang)的(de)(de)(de)(de)情(qing)況下(xia),存在(zai)大量(liang)的(de)(de)(de)(de)傳(chuan)輸(shu)線(xian)(xian)路,由于繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)維(wei)(wei)護(hu)(hu)設(she)(she)備(bei)(bei)(bei)(bei)的(de)(de)(de)(de)誤動(dong)(dong)作,電(dian)(dian)(dian)(dian)源(yuan)(yuan)與(yu)各系(xi)統(tong)(tong)的(de)(de)(de)(de)連接(jie)非常(chang)接(jie)近負載。 發(fa)(fa)電(dian)(dian)(dian)(dian)機變壓器(qi)(qi)和(he)輸(shu)電(dian)(dian)(dian)(dian)線(xian)(xian)路一旦發(fa)(fa)生(sheng)故障(zhang),繼(ji)(ji)電(dian)(dian)(dian)(dian)保(bao)護(hu)(hu)維(wei)(wei)護(hu)(hu)設(she)(she)備(bei)(bei)(bei)(bei)拒(ju)絕(jue)(jue)(jue)工(gong)作,損(sun)(sun)害(hai)了設(she)(she)備(bei)(bei)(bei)(bei)和(he)系(xi)統(tong)(tong)的(de)(de)(de)(de)安全(quan),損(sun)(sun)失(shi)適當且(qie)無限。 在(zai)這種(zhong)情(qing)況下(xia),在(zai)系(xi)統(tong)(tong)中的(de)(de)(de)(de)旋轉(zhuan)備(bei)(bei)(bei)(bei)用容量(liang)少,系(xi)統(tong)(tong)、負載和(he)電(dian)(dian)(dian)(dian)源(yuan)(yuan)之間的(de)(de)(de)(de)連接(jie)薄的(de)(de)(de)(de)情(qing)況下(xia),繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)維(wei)(wei)護(hu)(hu)設(she)(she)備(bei)(bei)(bei)(bei)會誤動(dong)(dong)作,拾(shi)取發(fa)(fa)電(dian)(dian)(dian)(dian)機變壓器(qi)(qi)和(he)輸(shu)電(dian)(dian)(dian)(dian)線(xian)(xian),即使負載電(dian)(dian)(dian)(dian)源(yuan)(yuan)停(ting)止,或(huo)者導致系(xi)統(tong)(tong)穩定性(xing)(xing)(xing)的(de)(de)(de)(de)破壞,損(sun)(sun)失(shi)也是適當且(qie)無限的(de)(de)(de)(de)。 由于即使檢查(cha)設(she)(she)備(bei)(bei)(bei)(bei)被拒(ju)絕(jue)(jue)(jue),備(bei)(bei)(bei)(bei)份(fen)檢查(cha)也能(neng)夠正常(chang)工(gong)作,排除(chu)故障(zhang),因此在(zai)這種(zhong)情(qing)況下(xia),三相(xiang)繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)保(bao)護(hu)(hu)測試器(qi)(qi)的(de)(de)(de)(de)試驗設(she)(she)備(bei)(bei)(bei)(bei)的(de)(de)(de)(de)可(ke)靠(kao)(kao)性(xing)(xing)(xing)更為(wei)重要(yao)。

裝(zhuang)置配備專用(yong)的(de)(de)自恢復(fu)CF卡,防止非法(fa)關機(ji)、刪(shan)除或(huo)修改(gai)硬盤上(shang)的(de)(de)文(wen)件(jian)和桌(zhuo)面上(shang)的(de)(de)圖(tu)標等(deng)導致(zhi)操作系(xi)統損(sun)壞。 需要(yao)在(zai)本機(ji)中(zhong)保存數(shu)據時,請(qing)將數(shu)據保存到d磁盤。 使(shi)(shi)用(yong)USB磁盤復(fu)制(zhi)數(shu)據時,請(qing)務必(bi)確認u盤干凈,無病毒(du)。 此外,請(qing)勿使(shi)(shi)用(yong)u盤在(zai)本系(xi)統中(zhong)安裝(zhuang)其(qi)他軟件(jian)程序。 在(zai)使(shi)(shi)用(yong)機(ji)器(qi)之前要(yao)進行(xing)外觀檢查(cha),將3芯電(dian)(dian)(dian)源線的(de)(de)接(jie)地端切實接(jie)地,然后向機(ji)器(qi)供電(dian)(dian)(dian)。 此時,必(bi)須在(zai)兩個頭點亮的(de)(de)狀(zhuang)態下,接(jie)通秒(miao)表的(de)(de)電(dian)(dian)(dian)源開(kai)關,使(shi)(shi)秒(miao)表的(de)(de)開(kai)關正常(chang)。 用(yong)手觸(chu)摸(mo)“輸出選擇(ze)”按鈕(niu)開(kai)關,輸出狀(zhuang)態指示燈將從左至右正常(chang)選擇(ze),輸出狀(zhuang)態選擇(ze)為(wei)“AC0~250V”段(duan),按下油箱(xiang)右下的(de)(de)主回路“輸出控制(zhi)開(kai)關”,即可慢慢調節調節器(qi)的(de)(de)大旋鈕(niu)。 此時,電(dian)(dian)(dian)壓(ya)/電(dian)(dian)(dian)流計用(yong)“0~250V”的(de)(de)交流電(dian)(dian)(dian)壓(ya)進行(xing)顯示。 要(yao)輸出“DC0~350V”,請(qing)將輸出狀(zhuang)態選擇(ze)為(wei)“DC0~350V”段(duan),調整方法(fa)同上(shang)。

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