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1．二次壓降(jiang)(jiang)及負荷(he)測(ce)(ce)(ce)試儀開(kai)機后沒有(you)顯示處理(li)辦法(fa)：電(dian)(dian)池沒有(you)電(dian)(dian)？請(qing)(qing)先(xian)外接充電(dian)(dian)器(qi)(qi)，如果仍然(ran)不能(neng)工(gong)作，請(qing)(qing)立刻(ke)停(ting)止使用(yong)，廠家(jia),請(qing)(qing)勿自行(xing)打開(kai)儀器(qi)(qi)，否則可能(neng)不能(neng)享受(shou)包修服務。2．二次壓降(jiang)(jiang)及負荷(he)測(ce)(ce)(ce)試儀測(ce)(ce)(ce)試過程中(zhong)，出現數據不穩定請(qing)(qing)檢查接線是否正(zheng)確，接線是否接觸良好，同時周(zhou)圍(wei)是否有(you)特別(bie)大的干擾。3．負荷(he)測(ce)(ce)(ce)試過程中(zhong)出現負荷(he)為負的情(qing)(qing)況(kuang)：處理(li)辦法(fa)：請(qing)(qing)將鉗表反(fan)向即可。4．電(dian)(dian)壓互感器(qi)(qi)二次回路壓降(jiang)(jiang)的測(ce)(ce)(ce)試，一(yi)般均在實際負荷(he)運行(xing)情(qing)(qing)況(kuang)下現場帶電(dian)(dian)進(jin)行(xing)，為此必須嚴格執行(xing)《電(dian)(dian)業安全規(gui)程》（電(dian)(dian)力線路部分(fen)）有(you)關(guan)內容；5．電(dian)(dian)...

在(zai)防雷檢測(ce)(ce)(ce)中(zhong)，引(yin)起接地(di)(di)電(dian)阻(zu)(zu)讀數不(bu)準確(que)的(de)因(yin)素(su)很多。總結起來一般有(you)以下九(jiu)個方面的(de)原因(yin)。*，由于接地(di)(di)電(dian)阻(zu)(zu)測(ce)(ce)(ce)試儀是通過(guo)鐵釬(han)(han)發(fa)射和接收電(dian)流來測(ce)(ce)(ce)試接地(di)(di)體的(de)地(di)(di)電(dian)阻(zu)(zu)，所以兩(liang)鐵釬(han)(han)之(zhi)間及兩(liang)釬(han)(han)與接地(di)(di)體之(zhi)間距(ju)離(li)太近時將產(chan)生相(xiang)互(hu)干擾，并(bing)由此(ci)產(chan)生誤差。因(yin)此(ci)，在(zai)測(ce)(ce)(ce)量時。接地(di)(di)體、電(dian)壓(ya)、電(dian)流順序布置(zhi)，三點成直線(xian)，彼此(ci)相(xiang)距(ju)20m。第(di)二，鐵釬(han)(han)插地(di)(di)深(shen)度(du)應(ying)大于鐵釬(han)(han)長度(du)的(de)1／4，否(fou)則，將產(chan)生測(ce)(ce)(ce)試誤差。因(yin)此(ci)。在(zai)檢測(ce)(ce)(ce)時應(ying)盡量將鐵釬(han)(han)打深(shen)。第(di)三，被(bei)測(ce)(ce)(ce)接地(di)(di)在(zai)“公用地(di)(di)”情況下，因(yin)設備絕緣不(bu)好或(huo)短路，引(yin)起接地(di)(di)裝置(zhi)對地(di)(di)產(chan)生一定(ding)的(de)地(di)(di)電(dian)壓(ya)...

①直(zhi)流(liu)面耐壓試(shi)驗不能反映(ying)設備實際(ji)工況(kuang)下(xia)的(de)電(dian)(dian)(dian)(dian)(dian)場分(fen)布(bu)，難(nan)以正(zheng)確發(fa)現電(dian)(dian)(dian)(dian)(dian)容(rong)器的(de)內部缺陷(xian)。直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)壓下(xia)電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)容(rong)器元(yuan)件(jian)上的(de)電(dian)(dian)(dian)(dian)(dian)壓按(an)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)分(fen)布(bu)；而在(zai)(zai)交流(liu)電(dian)(dian)(dian)(dian)(dian)壓下(xia)則是按(an)介電(dian)(dian)(dian)(dian)(dian)常數(shu)分(fen)布(bu)的(de)，它反映(ying)運(yun)行的(de)實際(ji)情況(kuang)。全膜(mo)或紙膜(mo)電(dian)(dian)(dian)(dian)(dian)容(rong)器的(de)固體介質電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)率(lv)可高(gao)達(da)1～100EΩm，當某電(dian)(dian)(dian)(dian)(dian)容(rong)元(yuan)件(jian)的(de)絕(jue)緣(yuan)(yuan)薄膜(mo)絕(jue)緣(yuan)(yuan)不良(liang)時，其電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)率(lv)可大幅度(du)下(xia)降至原電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)率(lv)的(de)幾分(fen)之一。直(zhi)流(liu)耐壓時，電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)率(lv)高(gao)的(de)良(liang)好的(de)電(dian)(dian)(dian)(dian)(dian)容(rong)元(yuan)件(jian)上承(cheng)受的(de)電(dian)(dian)(dian)(dian)(dian)壓可較不良(liang)電(dian)(dian)(dian)(dian)(dian)容(rong)元(yuan)件(jian)高(gao)出(chu)幾倍，從(cong)而使絕(jue)緣(yuan)(yuan)不良(liang)的(de)電(dian)(dian)(dian)(dian)(dian)容(rong)元(yuan)件(jian)反而容(rong)易(yi)通過試(shi)驗，其絕(jue)緣(yuan)(yuan)缺陷(xian)在(zai)(zai)運(yun)行電(dian)(dian)(dian)(dian)(dian)壓下(xia)便會較快地暴露出(chu)來(lai)，發(fa)展成為(wei)...

所有(you)提高(gao)常(chang)規直(zhi)流(liu)(liu)輸(shu)電(dian)可靠性(xing)(xing)的(de)(de)(de)措(cuo)施對(dui)于提高(gao)特高(gao)壓直(zhi)流(liu)(liu)輸(shu)電(dian)的(de)(de)(de)可靠性(xing)(xing)依(yi)然有(you)效，并(bing)且(qie)要(yao)進(jin)一(yi)步予以加(jia)強。主(zhu)要(yao)包(bao)括：降低元部件故(gu)障率；采(cai)(cai)取合(he)理的(de)(de)(de)結(jie)構設(she)計(ji)，如模塊化、開放式等(deng)；廣泛(fan)采(cai)(cai)用冗余的(de)(de)(de)概念，如控(kong)制保(bao)護系統(tong)、水冷系統(tong)的(de)(de)(de)并(bing)行(xing)(xing)(xing)冗余和(he)晶(jing)閘管的(de)(de)(de)串(chuan)行(xing)(xing)(xing)冗余等(deng)；加(jia)強設(she)備狀態監(jian)視和(he)設(she)備自檢功能(neng)等(deng)。針對(dui)常(chang)規直(zhi)流(liu)(liu)工程(cheng)中(zhong)存在的(de)(de)(de)問題，如曾經導致直(zhi)流(liu)(liu)系統(tong)或者雙停運的(de)(de)(de)站用電(dian)系統(tong)、換流(liu)(liu)變(bian)本(ben)體保(bao)護繼電(dian)器(qi)、直(zhi)流(liu)(liu)保(bao)護系統(tong)單元件故(gu)障等(deng)薄弱環節，在特高(gao)壓直(zhi)流(liu)(liu)輸(shu)電(dian)系統(tong)的(de)(de)(de)設(she)計(ji)和(he)建設(she)中(zhong)將采(cai)(cai)取措(cuo)施進(jin)行(xing)(xing)(xing)改進(jin)。此外，還將加(jia)強運行(xing)(xing)(xing)維護人員...

1)電(dian)(dian)(dian)(dian)網同(tong)步電(dian)(dian)(dian)(dian)壓信號：觸(chu)(chu)(chu)發(fa)(fa)器(qi)的(de)(de)同(tong)步電(dian)(dian)(dian)(dian)壓信號取自電(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)壓。2)晶(jing)(jing)(jing)閘(zha)(zha)管過(guo)零同(tong)步信號：觸(chu)(chu)(chu)發(fa)(fa)器(qi)的(de)(de)同(tong)步電(dian)(dian)(dian)(dian)壓信號取自晶(jing)(jing)(jing)閘(zha)(zha)管的(de)(de)陰、陽。3)晶(jing)(jing)(jing)閘(zha)(zha)管觸(chu)(chu)(chu)發(fa)(fa)電(dian)(dian)(dian)(dian)流(liu)變(bian)化率：指的(de)(de)是晶(jing)(jing)(jing)閘(zha)(zha)管觸(chu)(chu)(chu)發(fa)(fa)電(dian)(dian)(dian)(dian)流(liu)的(de)(de)陡度(du)，1US上升(sheng)的(de)(de)觸(chu)(chu)(chu)發(fa)(fa)電(dian)(dian)(dian)(dian)流(liu)MA數(shu)值。一(yi)般》40MA/US。4)觸(chu)(chu)(chu)發(fa)(fa)脈沖(chong)寬(kuan)度(du)(US)：觸(chu)(chu)(chu)發(fa)(fa)電(dian)(dian)(dian)(dian)流(liu)上升(sheng)到(dao)10%和下(xia)降到(dao)10%的(de)(de)時間，單(dan)(dan)位US。一(yi)般》50US。5)晶(jing)(jing)(jing)閘(zha)(zha)管觸(chu)(chu)(chu)發(fa)(fa)電(dian)(dian)(dian)(dian)流(liu)強度(du)(MA)：一(yi)般為晶(jing)(jing)(jing)閘(zha)(zha)管觸(chu)(chu)(chu)發(fa)(fa)電(dian)(dian)(dian)(dian)流(liu)的(de)(de)5～7倍，》500MA。6)脈沖(chong)列(lie)觸(chu)(chu)(chu)發(fa)(fa)：TSC的(de)(de)晶(jing)(jing)(jing)閘(zha)(zha)管觸(chu)(chu)(chu)發(fa)(fa)電(dian)(dian)(dian)(dian)流(liu)不是單(dan)(dan)脈沖(chong)或雙脈沖(chong)，而(er)是一(yi)串脈沖(chong)，脈沖(chong)串的(de)(de)寬(kuan)...

在當前(qian)的(de)新(xin)一(yi)輪農網改(gai)造(zao)中，對于(yu)(yu)導線(xian)(xian)(xian)供(gong)(gong)電(dian)(dian)半徑(jing)，不(bu)(bu)能(neng)片(pian)面(mian)的(de)根據要求(10KV線(xian)(xian)(xian)路(lu)(lu)供(gong)(gong)電(dian)(dian)半徑(jing)不(bu)(bu)大于(yu)(yu)15km，400V不(bu)(bu)大于(yu)(yu)0.5km)來規劃，要通過(guo)計算線(xian)(xian)(xian)路(lu)(lu)載(zai)流量(負(fu)荷電(dian)(dian)流)和(he)電(dian)(dian)流密度合理選擇，對于(yu)(yu)已經運行(xing)的(de)線(xian)(xian)(xian)路(lu)(lu)，定(ding)期檢查(cha)一(yi)下線(xian)(xian)(xian)路(lu)(lu)末(mo)端(duan)電(dian)(dian)壓偏差和(he)線(xian)(xian)(xian)路(lu)(lu)功(gong)率損失是否在規程要求以(yi)內(這一(yi)點一(yi)定(ding)要通過(guo)計算才(cai)能(neng)確定(ding))。所(suo)以(yi)在新(xin)建或改(gai)造(zao)架(jia)空電(dian)(dian)力線(xian)(xian)(xian)路(lu)(lu)、敷設低(di)壓地埋(mai)線(xian)(xian)(xian)路(lu)(lu)前(qian)，首(shou)先應對負(fu)荷進行(xing)全面(mian)調(diao)查(cha)，根據低(di)壓負(fu)荷情況(kuang)，合理選擇導線(xian)(xian)(xian)截面(mian)、導線(xian)(xian)(xian)型號和(he)供(gong)(gong)電(dian)(dian)半徑(jing)。對于(yu)(yu)超過(guo)供(gong)(gong)電(dian)(dian)半徑(jing)的(de)線(xian)(xian)(xian)路(lu)(lu)可以(yi)通過(guo)轉移負(fu)荷、縮短(duan)供(gong)(gong)電(dian)(dian)...

主要要求(qiu)是能實現遙控操作功能，并提供(gong)可(ke)靠的(de)(de)(de)斷(duan)路(lu)(lu)(lu)器位置信號。對使用年久且性(xing)(xing)能不能滿(man)足電網運(yun)行(xing)要求(qiu)的(de)(de)(de)6～35kV油斷(duan)路(lu)(lu)(lu)器動(dong)作要求(qiu)，應以性(xing)(xing)能好、可(ke)靠性(xing)(xing)高(gao)、維護量(liang)(liang)小的(de)(de)(de)無油設(she)備(如真空斷(duan)路(lu)(lu)(lu)器或SF6斷(duan)路(lu)(lu)(lu)器)來代替。斷(duan)路(lu)(lu)(lu)器輔助觸(chu)點改(gai)造為雙輔助觸(chu)點接線以防信號誤(wu)(wu)發(fa)。微(wei)量(liang)(liang)水分(fen)測定儀基(ji)于(yu)卡爾(er)—菲休庫侖滴定法原理，測定液體、固(gu)體、氣(qi)體中的(de)(de)(de)微(wei)量(liang)(liang)水分(fen)，用于(yu)電力、石油、化工、制藥、食(shi)品等(deng)行(xing)業，符(fu)合國家標準GB7600。1、高(gao)壓開關柜的(de)(de)(de)改(gai)造：完善機械防止誤(wu)(wu)操作措施；完善柜間距離，要求(qiu)隔離物起絕緣支撐作用...

主(zhu)要(yao)故(gu)障（1）線(xian)(xian)圈(quan)匝(za)(za)間(jian)(jian)短(duan)(duan)路(lu)(lu)。主(zhu)要(yao)原(yuan)因(yin)(yin)是絕緣(yuan)老(lao)(lao)化或(huo)(huo)散熱(re)不良或(huo)(huo)長(chang)期過(guo)負荷，由于(yu)短(duan)(duan)路(lu)(lu)電(dian)動(dong)力損(sun)傷匝(za)(za)間(jian)(jian)絕緣(yuan)，繞(rao)(rao)組(zu)的材料或(huo)(huo)工(gong)藝方面(mian)的缺陷，進水受(shou)潮(chao)，大氣或(huo)(huo)操(cao)作過(guo)電(dian)壓的襲(xi)擊。（2）繞(rao)(rao)組(zu)斷(duan)線(xian)(xian)。主(zhu)要(yao)原(yuan)因(yin)(yin)有短(duan)(duan)路(lu)(lu)電(dian)動(dong)力使線(xian)(xian)圈(quan)斷(duan)線(xian)(xian)，焊接不良，匝(za)(za)間(jian)(jian)短(duan)(duan)路(lu)(lu)。（3）繞(rao)(rao)組(zu)對(dui)地(di)擊穿(chuan)。主(zhu)要(yao)原(yuan)因(yin)(yin)有主(zhu)絕緣(yuan)的老(lao)(lao)化，絕緣(yuan)油(you)受(shou)潮(chao)，繞(rao)(rao)組(zu)內有雜質進入，過(guo)電(dian)壓短(duan)(duan)路(lu)(lu)時線(xian)(xian)圈(quan)變(bian)形損(sun)壞，因(yin)(yin)冷(leng)卻系統故(gu)障、冷(leng)卻油(you)道(dao)堵塞、保(bao)護失靈從(cong)而產(chan)生整體或(huo)(huo)局部過(guo)熱(re)以致絕緣(yuan)損(sun)壞。（4）繞(rao)(rao)組(zu)相間(jian)(jian)短(duan)(duan)路(lu)(lu)。主(zhu)要(yao)原(yuan)因(yin)(yin)與對(dui)地(di)擊穿(chuan)相似，也可能是引線(xian)(xian)間(jian)(jian)或(huo)(huo)套管間(jian)(jian)短(duan)(duan)路(lu)(lu)，油(you)面(mian)過(guo)...

同(tong)步(bu)(bu)(bu)發電(dian)機正(zheng)常運行(xing)時(shi)，定(ding)子(zi)磁(ci)和轉子(zi)磁(ci)之間(jian)可看成有(you)彈性的(de)磁(ci)力線(xian)。當負(fu)(fu)載增加時(shi)，功(gong)(gong)(gong)角將增大(da)(da)，這相當于(yu)把磁(ci)力線(xian)拉長(chang)；當負(fu)(fu)載減(jian)(jian)小時(shi)，功(gong)(gong)(gong)角將減(jian)(jian)小，這相當于(yu)磁(ci)力線(xian)縮短。當負(fu)(fu)載突然變化時(shi)，由于(yu)轉子(zi)有(you)慣性，轉子(zi)功(gong)(gong)(gong)角不能(neng)立即穩定(ding)在(zai)新的(de)數(shu)值，而是(shi)在(zai)新的(de)穩定(ding)值左右(you)要經過若干(gan)次擺動(dong)，這種(zhong)現象稱(cheng)為同(tong)步(bu)(bu)(bu)發電(dian)機的(de)振(zhen)蕩(dang)。振(zhen)蕩(dang)有(you)兩種(zhong)類型：一(yi)種(zhong)是(shi)振(zhen)蕩(dang)的(de)幅度(du)越(yue)來(lai)越(yue)小，功(gong)(gong)(gong)角的(de)擺動(dong)逐漸衰減(jian)(jian)，后穩定(ding)在(zai)某一(yi)新的(de)功(gong)(gong)(gong)角下，仍以同(tong)步(bu)(bu)(bu)轉速穩定(ding)運行(xing)，稱(cheng)為同(tong)步(bu)(bu)(bu)振(zhen)蕩(dang)；另一(yi)種(zhong)是(shi)振(zhen)蕩(dang)的(de)幅度(du)越(yue)來(lai)越(yue)大(da)(da)，功(gong)(gong)(gong)角不斷增大(da)(da)，直至脫出穩定(ding)范圍，使(shi)發電(dian)機...

壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)繼(ji)電(dian)(dian)器(qi)是(shi)利(li)用(yong)液(ye)體的(de)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)來啟閉(bi)電(dian)(dian)氣觸點的(de)液(ye)壓(ya)(ya)(ya)(ya)(ya)電(dian)(dian)氣轉(zhuan)換(huan)元件。當系統壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)達(da)到(dao)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)繼(ji)電(dian)(dian)器(qi)的(de)調定(ding)值時(shi)，發(fa)出(chu)電(dian)(dian)信號，使電(dian)(dian)氣元件（如電(dian)(dian)磁鐵(tie)、電(dian)(dian)機、時(shi)間繼(ji)電(dian)(dian)器(qi)、電(dian)(dian)磁離合器(qi)等）動(dong)(dong)作(zuo)，使油路卸壓(ya)(ya)(ya)(ya)(ya)、換(huan)向(xiang)，執行元件實現順序動(dong)(dong)作(zuo)，或關(guan)閉(bi)電(dian)(dian)動(dong)(dong)機使系統停止工作(zuo)，起(qi)安全保護作(zuo)用(yong)等。壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)繼(ji)電(dian)(dian)器(qi)有(you)柱塞式(shi)(shi)、膜片式(shi)(shi)、彈簧管式(shi)(shi)和波紋管式(shi)(shi)四種結構形式(shi)(shi)。下面對柱塞式(shi)(shi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)繼(ji)電(dian)(dian)器(qi)的(de)工作(zuo)原理作(zuo)一介紹：當從(cong)繼(ji)電(dian)(dian)器(qi)下端進油口3進入(ru)的(de)液(ye)體壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)達(da)到(dao)調定(ding)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)值時(shi)，推動(dong)(dong)柱塞2上移，此位(wei)移通過杠桿放大后(hou)推動(dong)(dong)微動(dong)(dong)開關(guan)4動(dong)(dong)作(zuo)。改變彈簧1的(de)壓(ya)(ya)(ya)(ya)(ya)...