变(Bian)压(Ya)器(Qi)的(De)老(Lao)化(Hua)就(Jiu)是(Shi)因(Yin)为(Wei)变(Bian)压(Ya)器(Qi)使(Shi)用(Yong)过(Guo)程(Cheng)中(Zhong)不(Bu)注(Zhu)意(Yi)正(Zheng)确(Que)使(Shi)用(Yong)，(?)对(Dui)变(Bian)压(Ya)器(Qi)的(De)损(Sun)耗(Hao)比(Bi)较(Jiao)大(Da)，(?)引(Yin)起(Qi)变(Bian)压(Ya)器(Qi)出(Chu)现(Xian)故(Gu)障(Zhang)的(De)情(Qing)况(Kuang)比(Bi)较(Jiao)多(Duo)。(?)在(Zai)生(Sheng)产(Chan)和(He)建(Jian)设(She)上(Shang)对(Dui)于(Yu)变(Bian)压(Ya)器(Qi)损(Sun)耗(Hao)经(Jing)常(Chang)出(Chu)现(Xian)的(De)问(Wen)题(Ti)我(Wo)们(Men)给(Gei)大(Da)家(Jia)进(Jin)行(Xing)归(Gui)纳(Na)和(He)总(Zong)结(Jie)以(Yi)下(Xia)的(De)问(Wen)题(Ti)：(?)

一(Yi)、(?)变(Bian)压(Ya)器(Qi)厂(Chang)家(Jia)防(Fang)止(Zhi)过(Guo)负(Fu)荷(He)运(Yun)行(Xing)

变(Bian)压(Ya)器(Qi)大(Da)多(Duo)数(Shu)使(Shi)用(Yong)的(De)是(Shi)A绝(Jue)缘(Yuan)材(Cai)料(Liao)，(?)允(Yun)许(Xu)温(Wen)度(Du)为(Wei)105℃(?)。(?)变(Bian)压(Ya)器(Qi)温(Wen)度(Du)更(Geng)高(Gao)部(Bu)位(Wei)是(Shi)铁(Tie)芯(Xin)和(He)线(Xian)圈(Quan)，(?)上(Shang)层(Ceng)油(You)温(Wen)次(Ci)之(Zhi)，(?)下(Xia)层(Ceng)油(You)温(Wen)也(Ye)低(Di)。(?)测(Ce)量(Liang)线(Xian)圈(Quan)温(Wen)度(Du)是(Shi)平(Ping)均(Jun)温(Wen)度(Du)，(?)比(Bi)更(Geng)热(Re)点(Dian)温(Wen)度(Du)大(Da)约(Yue)低(Di)了(Liao)10℃(?)，(?)所(Suo)以(Yi)规(Gui)定(Ding)上(Shang)层(Ceng)油(You)温(Wen)不(Bu)能(Neng)超(Chao)过(Guo)85℃(?)。(?)(温(Wen)度(Du)在(Zai)85℃(?)的(De)基(Ji)础(Chu)上(Shang)增(Zeng)加(Jia)到(Dao)95℃(?)，(?)氧(Yang)化(Hua)速(Su)度(Du)增(Zeng)加(Jia)一(Yi)倍(Bei)。(?))

温(Wen)度(Du)与(Yu)温(Wen)升(Sheng)的(De)关(Guan)系(Xi)：(?)允(Yun)许(Xu)温(Wen)度(Du)=允(Yun)许(Xu)温(Wen)升(Sheng)+40℃(?)。(?)所(Suo)以(Yi)当(Dang)周(Zhou)围(Wei)空(Kong)气(Qi)温(Wen)度(Du)大(Da)于(Yu)40℃(?)时(Shi)，(?)就(Jiu)不(Bu)允(Yun)许(Xu)变(Bian)压(Ya)器(Qi)满(Man)负(Fu)荷(He)允(Yun)许(Xu)，(?)目(Mu)前(Qian)一(Yi)般(Ban)认(Ren)为(Wei)油(You)浸(Jin)变(Bian)压(Ya)器(Qi)绕(Rao)组(Zu)绝(Jue)缘(Yuan)更(Geng)高(Gao)温(Wen)度(Du)为(Wei)95℃(?)-98℃(?)时(Shi)，(?)变(Bian)压(Ya)器(Qi)具(Ju)有(You)正(Zheng)常(Chang)使(Shi)用(Yong)寿(Shou)命(Ming)约(Yue)为(Wei)20年(Nian)。(?)

若(Ruo)温(Wen)度(Du)到(Dao)105℃(?)时(Shi)，(?)使(Shi)用(Yong)寿(Shou)命(Ming)约(Yue)为(Wei)7年(Nian)，(?)温(Wen)度(Du)在(Zai)125℃(?)时(Shi)，(?)使(Shi)用(Yong)寿(Shou)命(Ming)约(Yue)为(Wei)2年(Nian)。(?)只(Zhi)有(You)上(Shang)层(Ceng)油(You)温(Wen)及(Ji)其(Qi)温(Wen)升(Sheng)*不(Bu)超(Chao)过(Guo)允(Yun)许(Xu)值(Zhi)，(?)才(Cai)能(Neng)保(Bao)证(Zheng)变(Bian)压(Ya)器(Qi)厂(Chang)家(Jia)的(De)变(Bian)压(Ya)器(Qi)安(An)长(Chang)周(Zhou)期(Qi)的(De)运(Yun)行(Xing)。(?)

过(Guo)负(Fu)荷(He)运(Yun)行(Xing)加(Jia)速(Su)变(Bian)压(Ya)器(Qi)不(Bu)可(Ke)逆(Ni)的(De)老(Lao)化(Hua)，(?)缩(Suo)短(Duan)变(Bian)压(Ya)器(Qi)的(De)寿(Shou)命(Ming)。(?)如(Ru)某(Mou)供(Gong)电(Dian)局(Ju)在(Zai)1996年(Nian)绝(Jue)缘(Yuan)油(You)色(Se)谱(Pu)分(Fen)析(Xi)中(Zhong)，(?)发(Fa)现(Xian)7台(Tai)110～(?)220 kV变(Bian)压(Ya)器(Qi)总(Zong)烃(Ting)超(Chao)标(Biao)，(?)是(Shi)局(Ju)部(Bu)过(Guo)热(Re)所(Suo)致(Zhi)，(?)事(Shi)发(Fa)后(Hou)马(Ma)上(Shang)对(Dui)产(Chan)生(Sheng)局(Ju)部(Bu)过(Guo)热(Re)7台(Tai)变(Bian)压(Ya)器(Qi)限(Xian)负(Fu)荷(He)运(Yun)行(Xing)，(?)防(Fang)止(Zhi)变(Bian)压(Ya)器(Qi)再(Zai)出(Chu)现(Xian)局(Ju)部(Bu)过(Guo)热(Re)。(?)

二(?)、(?)变(Bian)压(Ya)器(Qi)厂(Chang)家(Jia)防(Fang)止(Zhi)变(Bian)压(Ya)器(Qi)出(Chu)口(Kou)突(Tu)发(Fa)性(Xing)短(Duan)路(Lu)

电(Dian)力(Li)系(Xi)统(Tong)容(Rong)量(Liang)大(Da)，(?)负(Fu)荷(He)侧(Ce)出(Chu)口(Kou)短(Duan)路(Lu)电(Dian)流(Liu)大(Da)，(?)造(Zao)成(Cheng)变(Bian)压(Ya)器(Qi)损(Sun)坏(Huai)概(Gai)率(Lu)很(Hen)高(Gao)。(?)为(Wei)了(Liao)变(Bian)压(Ya)器(Qi)*全(Quan)运(Yun)行(Xing) ，(?)采(Cai)取(Qu)下(Xia)列(Lie)措(Cuo)施(Shi)：(?)

1、(?)改(Gai)变(Bian)10 kV中(Zhong)性(Xing)点(Dian)接(Jie)地(Di)方(Fang)式(Shi)。(?)市(Shi)区(Qu)电(Dian)缆(Lan)线(Xian)路(Lu)多(Duo)，(?)实(Shi)施(Shi)10 kV中(Zhong)性(Xing)点(Dian)经(Jing)16Ω(?)电(Dian)阻(Zu)接(Jie)地(Di)运(Yun)行(Xing)。(?)中(Zhong)性(Xing)点(Dian)经(Jing)电(Dian)阻(Zu)接(Jie)地(Di)后(Hou)，(?)单(Dan)相(Xiang)接(Jie)地(Di)时(Shi)，(?)电(Dian)阻(Zu)能(Neng)泄(Xie)放(Fang)熄(Xi)弧(Hu)后(Hou)半(Ban)波(Bo)电(Dian)荷(He)的(De)积(Ji)聚(Ju)，(?)减(Jian)少(Shao)产(Chan)生(Sheng)振(Zhen)荡(Dang)的(De)*量(Liang)，(?)降(Jiang)低(Di)零(Ling)序(Xu)电(Dian)位(Wei)，(?)减(Jian)慢(Man)恢(Hui)复(Fu)电(Dian)压(Ya)上(Shang)升(Sheng)速(Su)度(Du)，(?)大(Da)大(Da)降(Jiang)低(Di)过(Guo)电(Dian)压(Ya)幅(Fu)值(Zhi)和(He)过(Guo)电(Dian)压(Ya)产(Chan)生(Sheng)概(Gai)率(Lu)。(?)

2、(?)郊(Jiao)区(Qu)较(Jiao)多(Duo)架(Jia)空(Kong)线(Xian)路(Lu)，(?)变(Bian)电(Dian)站(Zhan)10 kV中(Zhong)性(Xing)点(Dian)安(An)装(Zhuang)自(Zi)动(Dong)调(Diao)谐(Xie)消(Xiao)弧(Hu)线(Xian)圈(Quan)。(?)10 kV中(Zhong)性(Xing)点(Dian)接(Jie)地(Di)方(Fang)式(Shi)的(De)改(Gai)变(Bian)，(?)消(Xiao)*了(Liao)单(Dan)相(Xiang)接(Jie)地(Di)转(Zhuan)变(Bian)成(Cheng)三(San)相(Xiang)短(Duan)路(Lu)的(De)可(Ke)能(Neng)性(Xing)，(?)防(Fang)止(Zhi)变(Bian)压(Ya)器(Qi)出(Chu)口(Kou)三(San)相(Xiang)短(Duan)路(Lu)烧(Shao)坏(Huai)变(Bian)压(Ya)器(Qi)。(?)

3、(?)变(Bian)电(Dian)站(Zhan)10 kV设(She)备(Bei)采(Cai)用(Yong)全(Quan)封(Feng)闭(Bi)加(Jia)强(Qiang)绝(Jue)缘(Yuan)真(Zhen)空(Kong)开(Kai)关(Guan)柜(Gui)。(?)新(Xin)建(Jian)变(Bian)电(Dian)站(Zhan)一(Yi)律(Lu)使(Shi)用(Yong)全(Quan)封(Feng)闭(Bi)真(Zhen)空(Kong)开(Kai)关(Guan)柜(Gui)。(?)旧(Jiu)变(Bian)电(Dian)站(Zhan)采(Cai)用(Yong)变(Bian)压(Ya)器(Qi)10 kV出(Chu)线(Xian)及(Ji)高(Gao)压(Ya)室(Shi)母(Mu)线(Xian)包(Bao)绝(Jue)缘(Yuan)，(?)在(Zai)全(Quan)国(Guo)电(Dian)力(Li)系(Xi)统(Tong)中(Zhong)加(Jia)强(Qiang)10 kV开(Kai)关(Guan)柜(Gui)无(Wu)油(You)化(Hua)改(Gai)造(Zao)及(Ji)全(Quan)工(Gong)况(Kuang)改(Gai)造(Zao)，(?)加(Jia)强(Qiang)10 kV设(She)备(Bei)的(De)绝(Jue)缘(Yuan)。(?)

4、(?)改(Gai)10 kV配(Pei)电(Dian)室(Shi)运(Yun)行(Xing)环(Huan)境(Jing)。(?)采(Cai)用(Yong)封(Feng)闭(Bi)、(?)抽(Chou)湿(Shi)、(?)定(Ding)期(Qi)清(Qing)扫(Sao)，(?)重(Zhong)要(Yao)配(Pei)电(Dian)室(Shi)加(Jia)装(Zhuang)空(Kong)调(Diao)的(De)方(Fang)法(Fa)改(Gai)10 kV配(Pei)电(Dian)室(Shi)运(Yun)行(Xing)条(Tiao)件(Jian)。(?)

5、(?)安(An)装(Zhuang)线(Xian)路(Lu)氧(Yang)化(Hua)锌(Xin)避(Bi)雷(Lei)器(Qi)及(Ji)配(Pei)电(Dian)防(Fang)爆(Bao)氧(Yang)化(Hua)锌(Xin)避(Bi)雷(Lei)器(Qi)，(?)降(Jiang)低(Di)系(Xi)统(Tong)过(Guo)电(Dian)压(Ya)水(Shui)平(Ping)。(?) 加(Jia)强(Qiang)配(Pei)网(Wang)改(Gai)造(Zao)。(?) 改(Gai)*了(Liao)运(Yun)行(Xing)条(Tiao)件(Jian)，(?)降(Jiang)低(Di)了(Liao)短(Duan)路(Lu)事(Shi)故(Gu)率(Lu)。(?)

三(San)、(?)变(Bian)压(Ya)器(Qi)厂(Chang)家(Jia)采(Cai)用(Yong)全(Quan)密(Mi)封(Feng)变(Bian)压(Ya)器(Qi)

全(Quan)密(Mi)封(Feng)变(Bian)压(Ya)器(Qi)使(Shi)变(Bian)压(Ya)器(Qi)油(You)与(Yu)空(Kong)气(Qi)隔(Ge)离(Li)，(?)减(Jian)少(Shao)油(You)的(De)氧(Yang)化(Hua)。(?)非(Fei)全(Quan)密(Mi)封(Feng)变(Bian)压(Ya)器(Qi)加(Jia)强(Qiang)密(Mi)封(Feng)胶(Jiao)囊(Nang)的(De)维(Wei)护(Hu)及(Ji)变(Bian)压(Ya)器(Qi)充(Chong)氮(Dan)措(Cuo)施(Shi)。(?)

局(Ju)部(Bu)放(Fang)电(Dian)是(Shi)指(Zhi)发(Fa)生(Sheng)在(Zai)电(Dian)之(Zhi)间(Jian)但(Dan)并(Bing)未(Wei)贯(Guan)穿(Chuan)电(Dian)*的(De)放(Fang)电(Dian)，(?)它(Ta)是(Shi)由(You)于(Yu)设(She)备(Bei)绝(Jue)缘(Yuan)内(Nei)部(Bu)存(Cun)在(Zai)弱(Ruo)点(Dian)或(Huo)生(Sheng)产(Chan)过(Guo)程(Cheng)中(Zhong)造(Zao)成(Cheng)的(De)缺(Que)，(?)在(Zai)高(Gao)电(Dian)场(Chang)强(Qiang)度(Du)作(Zuo)用(Yong)下(Xia)发(Fa)生(Sheng)重(Zhong)复(Fu)击(Ji)穿(Chuan)和(He)熄(Xi)灭(Mie)的(De)现(Xian)象(Xiang)。(?)

它(Ta)表(Biao)现(Xian)为(Wei)绝(Jue)缘(Yuan)内(Nei)气(Qi)体(Ti)的(De)击(Ji)穿(Chuan)、(?)小(Xiao)范(Fan)围(Wei)内(Nei)固(Gu)体(Ti)或(Huo)液(Ye)体(Ti)介(Jie)质(Zhi)的(De)局(Ju)部(Bu)击(Ji)穿(Chuan)或(Huo)属(Shu)表(Biao)面(Mian)的(De)边(Bian)缘(Yuan)及(Ji)尖(Jian)角(Jiao)部(Bu)位(Wei)场(Chang)强(Qiang)集(Ji)中(Zhong)引(Yin)起(Qi)局(Ju)部(Bu)击(Ji)穿(Chuan)放(Fang)电(Dian)等(Deng)。(?)但(Dan)若(Ruo)电(Dian)器(Qi)设(She)备(Bei)绝(Jue)缘(Yuan)在(Zai)运(Yun)行(Xing)电(Dian)压(Ya)下(Xia)不(Bu)断(Duan)出(Chu)现(Xian)局(Ju)部(Bu)放(Fang)电(Dian)，(?)这(Zhe)些(Xie)微(Wei)弱(Ruo)的(De)放(Fang)电(Dian)将(Jiang)产(Chan)生(Sheng)累(Lei)积(Ji)效(Xiao)应(Ying)会(Hui)使(Shi)绝(Jue)缘(Yuan)的(De)介(Jie)电(Dian)性(Xing)能(Neng)逐(Zhu)渐(Jian)劣(Lie)化(Hua)并(Bing)使(Shi)局(Ju)部(Bu)缺(Que)*扩(Kuo)大(Da)，(?)然(Ran)后(Hou)导(Dao)致(Zhi)整(Zheng)个(Ge)绝(Jue)缘(Yuan)击(Ji)穿(Chuan)。(?)