兩因
 

 

xiangxinhenduogongchengshidouqingchuyidian
，najiushigaoyadianrongyunxingdianyakeyifanyingchubiandiansuomuxianxitongdianyadezhuangkuang，bingzhijieyingxiangdianrongqideshouminghegongneng。gaoyadianrongqineibuzaiyunxingzhongdeyougonggonglvsunhaozhuyaoyoujiezhisunshihedaotidianzusunshiliangbufenzucheng。erqizhongdejiezhisunshikeyizhandaogaoyadianrongqizongyougonglvsunhaode98%以上。

 

chucizhiwai
，youyugaoyadianrongqiyougonggonglvsunhaoyuwugonggonglvtonggaoyadianrongqiyunxingdianyadepingfangchengzhengbi
，suizheyunxingdianyadezenggao，gaoyadianrongqideyougonggonglvsunhaohuixunsuzengjia
，jinerwendushenggao
，suduyehuizengjia，jianghuidaozhidianrongqidejueyuanshoumingjiangdi。lingwai，yingaoyadianrongqichixuyunxingdeguodianyayibandingweiedingdianyade1.10倍，當電容器長時間處於過電壓下運行時，會造成電容器產生過電流而遭到損壞。所以
，高壓電容器需要安設完善的過電壓保護裝置。

 

 

諧波電流同樣是造成高壓電容器損壞的最大“殺手”zhiyi。zairichangyunxingguochengzhong，dangdianwangzhongdexiebodianliuliurudianrongqishi

，jiuhuidiejiazaigaoyadianrongqidejibodianliushang
，shiqiyunxingdianliuzengda。tongshiyehuishigaoyadianrongqijibodianyashangdefengdianyayouxiaozhizengda。ruguodianrongqirongkangyuxitonggankangxiangpipei，huiduigaocixiebozaochengfangdazuoyongerchanshengguodianliuheguodianya，yinqidianrongqineibujueyuanjiezhijubufangdian，shidedianrongqichanshenggudu
、熔絲群爆等故障。

 

上(shang)文(wen)中(zhong)提(ti)及(ji)的(de)運(yun)行(xing)電(dian)壓(ya)過(guo)高(gao)和(he)諧(xie)波(bo)電(dian)流(liu)，是(shi)最(zui)容(rong)易(yi)導(dao)致(zhi)高(gao)壓(ya)電(dian)容(rong)在(zai)夏(xia)季(ji)出(chu)線(xian)故(gu)障(zhang)的(de)兩(liang)個(ge)根(gen)本(ben)原(yuan)因(yin)。當(dang)高(gao)壓(ya)電(dian)容(rong)器(qi)出(chu)線(xian)故(gu)障(zhang)時(shi)，工(gong)程(cheng)師(shi)可(ke)以(yi)從(cong)以(yi)上(shang)兩(liang)個(ge)方(fang)麵(mian)入(ru)手(shou)進(jin)行(xing)快(kuai)速(su)排(pai)查(zha)和(he)檢(jian)修(xiu)
，保(bao)障(zhang)高(gao)壓(ya)電(dian)容(rong)器(qi)的(de)夏(xia)季(ji)工(gong)作(zuo)運(yun)行(xing)安(an)全(quan)。

 

下麵我們來看一下
，在夏季的高壓電容檢修過程中哪三類問題是工程師最常遇到的
，以及麵對這些問題時工程師應該怎樣做。

 

 

由(you)於(yu)夏(xia)季(ji)雷(lei)雨(yu)多(duo)發(fa)，很(hen)容(rong)易(yi)造(zao)成(cheng)電(dian)路(lu)短(duan)路(lu)或(huo)過(guo)電(dian)壓(ya)過(guo)高(gao)等(deng)情(qing)況(kuang)，這(zhe)會(hui)直(zhi)接(jie)影(ying)響(xiang)高(gao)壓(ya)電(dian)容(rong)器(qi)的(de)正(zheng)常(chang)工(gong)作(zuo)。如(ru)果(guo)電(dian)容(rong)在(zai)運(yun)行(xing)中(zhong)突(tu)然(ran)失(shi)去(qu)電(dian)壓(ya)
，可(ke)能(neng)會(hui)導(dao)致(zhi)變(bian)電(dian)所(suo)電(dian)源(yuan)側(ce)瞬(shun)時(shi)跳(tiao)閘(zha)或(huo)主(zhu)變(bian)壓(ya)器(qi)斷(duan)開(kai)。若(ruo)電(dian)容(rong)器(qi)在(zai)電(dian)源(yuan)合(he)閘(zha)或(huo)備(bei)用(yong)電(dian)源(yuan)自(zi)動(dong)投(tou)入(ru)使(shi)用(yong)時(shi)未(wei)被(bei)移(yi)除(chu)，可(ke)能(neng)會(hui)導(dao)致(zhi)電(dian)容(rong)器(qi)帶(dai)負(fu)荷(he)產(chan)生(sheng)過(guo)電(dian)壓(ya)而(er)損(sun)壞(huai)。另(ling)外(wai)
，當(dang)變(bian)電(dian)所(suo)失(shi)去(qu)電(dian)壓(ya)恢(hui)複(fu)時(shi)如(ru)果(guo)不(bu)拆(chai)除(chu)電(dian)容(rong)器(qi)很(hen)可(ke)能(neng)會(hui)產(chan)生(sheng)諧(xie)振(zhen)過(guo)電(dian)壓(ya)
，使(shi)變(bian)壓(ya)器(qi)或(huo)電(dian)容(rong)器(qi)損(sun)壞(huai)。因(yin)此(ci)，高(gao)壓(ya)電(dian)容(rong)器(qi)應(ying)設(she)置(zhi)失(shi)壓(ya)保(bao)護(hu)裝(zhuang)置(zhi)，保(bao)證(zheng)電(dian)容(rong)在(zai)所(suo)接(jie)母(mu)線(xian)失(shi)壓(ya)後(hou)可(ke)靠(kao)動(dong)作(zuo)，又(you)可(ke)在(zai)母(mu)線(xian)電(dian)壓(ya)恢(hui)複(fu)正(zheng)常(chang)後(hou)可(ke)靠(kao)接(jie)入(ru)。

 

 

目(mu)前(qian)國(guo)內(nei)外(wai)所(suo)使(shi)用(yong)的(de)電(dian)容(rong)器(qi)斷(duan)路(lu)器(qi)，一(yi)般(ban)都(dou)采(cai)用(yong)真(zhen)空(kong)斷(duan)路(lu)器(qi)。當(dang)這(zhe)種(zhong)真(zhen)空(kong)斷(duan)路(lu)器(qi)合(he)閘(zha)時(shi)，斷(duan)路(lu)器(qi)觸(chu)頭(tou)可(ke)能(neng)會(hui)發(fa)生(sheng)彈(dan)跳(tiao)現(xian)象(xiang)而(er)產(chan)生(sheng)過(guo)電(dian)壓(ya)。雖(sui)然(ran)由(you)此(ci)產(chan)生(sheng)的(de)過(guo)電(dian)壓(ya)峰(feng)值(zhi)較(jiao)低(di)，對(dui)電(dian)容(rong)器(qi)的(de)影(ying)響(xiang)也(ye)不(bu)大(da)，但(dan)由(you)於(yu)電(dian)容(rong)器(qi)年(nian)投(tou)切(qie)次(ci)數(shu)在(zai)千(qian)次(ci)以(yi)上(shang)

，且(qie)斷(duan)路(lu)器(qi)斷(duan)開(kai)時(shi)可(ke)能(neng)引(yin)發(fa)擊(ji)穿(chuan)電(dian)容(rong)器(qi)的(de)過(guo)電(dian)壓(ya)
，因(yin)此(ci)，必(bi)須(xu)采(cai)取(qu)有(you)效(xiao)的(de)保(bao)護(hu)措(cuo)施(shi)來(lai)限(xian)製(zhi)斷(duan)路(lu)器(qi)操(cao)作(zuo)產(chan)生(sheng)的(de)過(guo)電(dian)壓(ya)。

 

 

相信很多工程師都知道，工作環境內的平均溫度每升高10℃，namedianrongqirongliangdexiajiangsudujiuhuijiakuaiyibei。ruguodianrongqichangqichuyugaodianchangyugaowenxiayunxing，huiyinqijueyuanjiezhilaohuahejiezhisunshizengda，jinerdaozhidianrongqineibukuaisushengwenerfare
，zaochengdianrongqishoumingjiangdi，shenzhidaozhidianrongqichanshengrejichuanersunhuai。yinci，danghuanjingwenduchaoguo40℃時shi，工gong程cheng師shi應ying該gai立li即ji停ting止zhi電dian容rong器qi運yun行xing。因yin此ci，為wei防fang止zhi電dian容rong器qi因yin運yun行xing溫wen度du過guo高gao而er損sun壞huai，應ying設she置zhi溫wen度du監jian控kong裝zhuang置zhi隨sui時shi監jian控kong製zhi電dian容rong器qi的de運yun行xing溫wen度du，並bing采cai用yong強qiang製zhi通tong風feng裝zhuang置zhi改gai善shan電dian容rong器qi的de散san熱re條tiao件jian，使shi電dian容rong器qi產chan生sheng的de熱re量liang以yi對dui流liu和he輻fu射she的de方fang式shi散san發fa出chu來lai。

 

上(shang)文(wen)中(zhong)所(suo)提(ti)及(ji)的(de)三(san)個(ge)問(wen)題(ti)
，是(shi)高(gao)壓(ya)電(dian)容(rong)在(zai)夏(xia)季(ji)運(yun)行(xing)過(guo)程(cheng)中(zhong)最(zui)常(chang)見(jian)的(de)，也(ye)是(shi)工(gong)程(cheng)師(shi)在(zai)進(jin)行(xing)檢(jian)修(xiu)維(wei)護(hu)時(shi)需(xu)要(yao)首(shou)先(xian)檢(jian)查(zha)的(de)三(san)個(ge)方(fang)麵(mian)。從(cong)以(yi)上(shang)三(san)個(ge)方(fang)麵(mian)入(ru)手(shou)進(jin)行(xing)整(zheng)體(ti)運(yun)行(xing)環(huan)境(jing)的(de)檢(jian)查(zha)和(he)維(wei)護(hu)，可(ke)以(yi)有(you)效(xiao)保(bao)障(zhang)機(ji)體(ti)在(zai)夏(xia)季(ji)高(gao)溫(wen)環(huan)境(jing)下(xia)的(de)正(zheng)常(chang)工(gong)作(zuo)運(yun)轉(zhuan)。