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电气设备测温

国民经济的(de)发(fa)展(zhan)导致用电(dian)(dian)(dian)(dian)(dian)(dian)负(fu)荷迅猛(meng)增(zeng)长,我国的(de)电(dian)(dian)(dian)(dian)(dian)(dian)力系统建(jian)设规模也随之(zhi)在(zai)迅速扩(kuo)大,供电(dian)(dian)(dian)(dian)(dian)(dian)网络(luo)覆盖(gai)面(mian)和(he)(he)回(hui)路不断增(zeng)加,大量变(bian)电(dian)(dian)(dian)(dian)(dian)(dian)站(zhan)不断新建(jian)。电(dian)(dian)(dian)(dian)(dian)(dian)网的(de)这些(xie)发(fa)展(zhan)状况要(yao)求在(zai)容量日益扩(kuo)大的(de)同(tong)时(shi),必须(xu)进一步降低变(bian)电(dian)(dian)(dian)(dian)(dian)(dian)站(zhan)建(jian)设成本,提高(gao)(gao)经济效(xiao)益和(he)(he)劳(lao)动生产率(lv),保(bao)障供电(dian)(dian)(dian)(dian)(dian)(dian)安(an)全与供电(dian)(dian)(dian)(dian)(dian)(dian)质量以改善(shan)对用户的(de)服(fu)务水平。为(wei)此(ci),变(bian)电(dian)(dian)(dian)(dian)(dian)(dian)站(zhan)需要(yao)采用先(xian)进的(de)技术,提高(gao)(gao)变(bian)电(dian)(dian)(dian)(dian)(dian)(dian)站(zhan)的(de)自动化(hua)(hua)(hua)水平,通(tong)过(guo)“四遥”功能(neng),实(shi)现无人值班(ban)和(he)(he)调度自动化(hua)(hua)(hua)。在(zai)提高(gao)(gao)变(bian)电(dian)(dian)(dian)(dian)(dian)(dian)站(zhan)的(de)安(an)全运行水平的(de)同(tong)时(shi),还(hai)必须(xu)要(yao)保(bao)证变(bian)电(dian)(dian)(dian)(dian)(dian)(dian)站(zhan)自动化(hua)(hua)(hua)设备的(de)性(xing)能(neng)稳(wen)定,高(gao)(gao)可(ke)靠(kao)性(xing)。

变(bian)电(dian)(dian)(dian)站的(de)(de)一次(ci)设(she)备,尤其是隔离(li)开关活动的(de)(de)动、静触头部分、电(dian)(dian)(dian)缆(lan)头发(fa)热(re)现(xian)象比(bi)较(jiao)突出,故(gu)(gu)障率高(gao)。特别(bie)是由于(yu)(yu)电(dian)(dian)(dian)缆(lan)接(jie)(jie)头制作质量(liang)不(bu)高(gao),压接(jie)(jie)不(bu)紧,接(jie)(jie)触电(dian)(dian)(dian)阻大(da),当负荷增加时(shi)极(ji)品发(fa)生设(she)备过热(re),严重时(shi)会(hui)导致火(huo)灾。当前多数的(de)(de)一次(ci)设(she)备接(jie)(jie)头温(wen)度(du)监(jian)测(ce)仍靠工作人(ren)员定期完(wan)成的(de)(de),费时(shi)费力,工作效率极(ji)低,有些电(dian)(dian)(dian)力设(she)备的(de)(de)温(wen)度(du)监(jian)测(ce)点(dian)或接(jie)(jie)头位(wei)(wei)于(yu)(yu)不(bu)便触及的(de)(de)位(wei)(wei)置,而且(qie)不(bu)能(neng)及时(shi)发(fa)现(xian)潜藏的(de)(de)隐患。为避免此类事故(gu)(gu)的(de)(de)发(fa)生,要能(neng)够采用合适的(de)(de)传感(gan)器(qi)技(ji)术(shu)对(dui)一次(ci)设(she)备及时(shi)进行温(wen)度(du)监(jian)测(ce),提(ti)高(gao)供电(dian)(dian)(dian)可(ke)靠性。

在电(dian)(dian)网的扩大过程(cheng)(cheng)中,变电(dian)(dian)站内的一次(ci)设(she)备如隔离(li)开(kai)关(guan)触(chu)头(tou)、母线排过渡点、电(dian)(dian)力(li)电(dian)(dian)缆进出(chu)线因接(jie)头(tou)接(jie)触(chu)不(bu)良(liang)引起发(fa)热时(shi),会造(zao)成接(jie)头(tou)处(chu)绝缘老化(hua)(hua)引发(fa)事故。在实际运(yun)行(xing)(xing)过程(cheng)(cheng)中,绝缘劣化(hua)(hua)故障的渐变过程(cheng)(cheng)也(ye)同(tong)时(shi)伴随着故障点异常(chang)(chang)发(fa)热,具体表(biao)现为故障点温(wen)度异常(chang)(chang)升高。通过测(ce)量一次(ci)设(she)备隔离(li)开(kai)关(guan)触(chu)头(tou)以(yi)及电(dian)(dian)缆终端接(jie)头(tou)的温(wen)度来监测(ce)一次(ci)设(she)备的运(yun)行(xing)(xing)状态,对于保证电(dian)(dian)力(li)系统的正(zheng)常(chang)(chang)运(yun)行(xing)(xing),提高运(yun)行(xing)(xing)可靠性和(he)自动(dong)化(hua)(hua)程(cheng)(cheng)度具有非常(chang)(chang)重(zhong)要的意义。

在变(bian)电(dian)站,母(mu)排(pai)、隔离开关(guan)(guan)、高压开关(guan)(guan)柜、断路器(qi)、电(dian)缆(lan)之间一般都采用插头连(lian)接(jie)、这(zhei)些一次(ci)设(she)备(bei)长期运行过(guo)(guo)程中,线夹头以(yi)及连(lian)接(jie)插头等部位(wei)容易因制造、运输、安装不良及老化引起接(jie)触(chu)电(dian)阻过(guo)(guo)大而发(fa)(fa)热(re),如果这(zhei)些发(fa)(fa)热(re)部位(wei)的(de)温度无法(fa)监测,得不到及时(shi)检修,则最终会可能发(fa)(fa)生触(chu)头升温过(guo)(guo)高甚至导致烧毁设(she)备(bei)的(de)火(huo)灾(zai)事(shi)(shi)故(gu)(gu)发(fa)(fa)生。近年来,在很(hen)多(duo)(duo)发(fa)(fa)电(dian)厂和变(bian)电(dian)站都发(fa)(fa)生过(guo)(guo)刀阐和电(dian)缆(lan)头过(guo)(guo)热(re)事(shi)(shi)故(gu)(gu),造成火(huo)灾(zai)和大面积停(ting)电(dian)事(shi)(shi)故(gu)(gu),甚至是“火(huo)烧连(lian)营(ying)(ying)”。一旦出现故(gu)(gu)障停(ting)电(dian),首先给人民群(qun)众生活带(dai)来不便(bian),干扰了(le)企业的(de)正(zheng)常生产经(jing)营(ying)(ying);其次(ci)给供电(dian)公司造成较大损失(shi);再者变(bian)电(dian)站内(nei)开关(guan)(guan)柜、母(mu)排(pai)、电(dian)缆(lan)的(de)分接(jie)头众多(duo)(duo),呈网(wang)状及封闭(bi)结构,查(cha)找故(gu)(gu)障隐(yin)患非(fei)常困难,会浪费大量(liang)的(de)人力,物力。

电力设备荧光光纤测温系统的功能特点:

①光纤测温系(xi)统可以(yi)实(shi)(shi)际应(ying)用在开关柜、环网柜实(shi)(shi)现,控温实(shi)(shi)现方式结构合理;

②荧光光纤测温系统便于安装,体积适当;

③光(guang)纤测温有(you)较好的(de)性价比,精度满(man)足使用要(yao)求(qiu);

④光纤测温系统(tong)抗(kang)干(gan)扰能力强(qiang),能稳定可(ke)靠地工作运行;

⑤光纤测温(wen)装置具有可自(zi)定义的(de)温(wen)度报(bao)警温(wen)度,具备(bei)超温(wen)报(bao)警等功(gong)能;

⑥可实时显示多通道的监测温度;

⑦实现(xian)超温动作时间显示,便(bian)于运行环(huan)境(jing)超温历史追忆;

⑧适应各(ge)种恶劣(lie)环境(jing)下的测温。

 

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光纤联系

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