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变压器光纤测温原理

干式变压器光纤测温系统原理

干式变压器光纤测温,包括干式变压器铁芯、绝缘件、浇注成型的绝缘和导体的绕组、压紧装置、光纤测温探头和温度控制器,测温探头为光纤测温探头,其预埋在绕组的绝缘内部,并且和绕组导体直接接触;温度控制器为基于光纤测温的温度控制器;光纤测温探头通过光纤连接在基于光纤测温的温度控制器的信号输入端;干式变压器光纤测温温度控制器的第一输出端控制风机的启停,第二输出端控制报警器超温报警,第三输出端控制超温跳闸。

干式变压器光纤测温

荧光(guang)光(guang)纤测温(wen)(wen)探(tan)头为非金(jin)属(shu),对(dui)(dui)变压器(qi)(qi)的(de)特(te)殊电(dian)场和磁场没有任何(he)影响(xiang);传导信号的(de)荧光(guang)光(guang)纤也为非金(jin)属(shu),对(dui)(dui)变压器(qi)(qi)亦无(wu)任何(he)影响(xiang);光(guang)纤测温(wen)(wen)探(tan)头直(zhi)(zhi)(zhi)接接触绕组导体发(fa)(fa)热源,直(zhi)(zhi)(zhi)接测量导体温(wen)(wen)度,所以(yi),能(neng)准确(que)反应绕组导体温(wen)(wen)度,及(ji)时发(fa)(fa)现绕组起始(shi)故障(zhang),便于及(ji)时解决,避免(mian)更(geng)大损(sun)失发(fa)(fa)生(sheng)(sheng)(sheng)。且即使非金(jin)属(shu)的(de)光(guang)纤测温(wen)(wen)探(tan)头和光(guang)纤发(fa)(fa)生(sheng)(sheng)(sheng)位移(yi)也不会导致短(duan)路和放(fang)电(dian)现象的(de)发(fa)(fa)生(sheng)(sheng)(sheng),更(geng)不会直(zhi)(zhi)(zhi)接对(dui)(dui)设备造(zao)成无(wu)法(fa)逆转的(de)损(sun)伤,延长(zhang)了干式变压器(qi)(qi)的(de)使用(yong)寿命。

变压器热点温度监测装置,变压器光纤测温系统设置安装的必要性

变压器故障类型主要有热故障和电气故障,其中热故障占总故障台数的 60%左右,过热兼高能放电故障占 10% 左右。油浸式变压器寿命主要取决于绝缘材料的寿命,而促使绝缘材料老化的决定性因素就是温度,因此变压器热点温度决定了变压器的使用寿命。过去由于变压器内绝缘要求和内部的强电磁干扰,热点部位的温度无法监测。出于安全考虑,国内变压器大都处于 50%~70% 额定功率下、非经济运行状况。为此过去都是通过在套管下部安装电流互感器,回传模拟信号的办法测量变压器的绕组热点温度,误差较大。因此,福州怎么买球光电科技有限公司自主研发的能有效准确检测变压器内部绕组温度的热点温度的光纤测温技术的系统,克服传统pt100变压器测温技术的不足,提供一种结构合理、操作方便且能有效准确地检测变压器内部绕组热点温度的用于10kv配电变压器上的光纤测温主机。

油浸式变压器光纤测温原理

变压器光纤测温系统包括高低压绕组,还包括安装于高低压绕组上的传感器油道撑条、用于检测高低压绕组内线圈温度的光纤温度传感器、通过光纤与光纤温度传感器相连的光纤接线盒、用于固定光纤的导线夹以及用于固定安装所述导线夹的夹件。通过在变压器内的高低压绕组上安装有用于检测其热点温度的光纤温度传感器,工作时通过光纤温度传感器检测到的温度值并利用光纤回传至光纤接线盒内,实时对高低压绕组进行温度监控,从可以保证变压器处于高效运转状态。

油浸式变压器光纤测温系统

油(you)浸式变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)作(zuo)为(wei)(wei)电力系统(tong)的(de)(de)(de)(de)(de)(de)(de)(de)核心设备,其(qi)高(gao)(gao)效安全运行(xing)(xing)对(dui)(dui)(dui)(dui)电力行(xing)(xing)业(ye)的(de)(de)(de)(de)(de)(de)(de)(de)运营发(fa)展起着至关重要(yao)的(de)(de)(de)(de)(de)(de)(de)(de)作(zuo)用(yong)(yong)。变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)工(gong)作(zuo)寿(shou)命(ming)取决于内部(bu)绝缘性(xing)能(neng),而热(re)老化(hua)是(shi)其(qi)绝缘性(xing)能(neng)劣化(hua)的(de)(de)(de)(de)(de)(de)(de)(de)主要(yao)影响(xiang)因(yin)素。通(tong)过(guo)对(dui)(dui)(dui)(dui)油(you)浸式变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)热(re)点温(wen)(wen)升的(de)(de)(de)(de)(de)(de)(de)(de)预(yu)(yu)测(ce)(ce)(ce)(ce)(ce),可直接(jie)确定(ding)绕(rao)组的(de)(de)(de)(de)(de)(de)(de)(de)最大温(wen)(wen)度(du)(du)(du)(du)(du)(du),了解变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)内部(bu)热(re)状态从而判断其(qi)是(shi)否过(guo)热(re);因(yin)此,对(dui)(dui)(dui)(dui)油(you)浸式变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)热(re)点温(wen)(wen)升的(de)(de)(de)(de)(de)(de)(de)(de)准(zhun)确预(yu)(yu)测(ce)(ce)(ce)(ce)(ce),是(shi)寿(shou)命(ming)评估的(de)(de)(de)(de)(de)(de)(de)(de)基(ji)本前(qian)提(ti),可进(jin)一步为(wei)(wei)变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)维修(xiu)替换、容量利用(yong)(yong)提(ti)供参考。变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)运行(xing)(xing)过(guo)程的(de)(de)(de)(de)(de)(de)(de)(de)温(wen)(wen)度(du)(du)(du)(du)(du)(du)检测(ce)(ce)(ce)(ce)(ce)是(shi)保证变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)安全的(de)(de)(de)(de)(de)(de)(de)(de)一项重要(yao)措施。通(tong)常采(cai)用(yong)(yong)光(guang)(guang)纤温(wen)(wen)度(du)(du)(du)(du)(du)(du)传(chuan)感(gan)器(qi)(qi)(qi)对(dui)(dui)(dui)(dui)变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)内部(bu)的(de)(de)(de)(de)(de)(de)(de)(de)温(wen)(wen)度(du)(du)(du)(du)(du)(du)进(jin)行(xing)(xing)采(cai)集(ji)。现(xian)有的(de)(de)(de)(de)(de)(de)(de)(de)测(ce)(ce)(ce)(ce)(ce)温(wen)(wen)系统(tong)精度(du)(du)(du)(du)(du)(du)差,无法准(zhun)确反(fan)映变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)实际(ji)运行(xing)(xing)状态。了一种变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)光(guang)(guang)纤测(ce)(ce)(ce)(ce)(ce)温(wen)(wen)系统(tong),包括光(guang)(guang)纤测(ce)(ce)(ce)(ce)(ce)温(wen)(wen)传(chuan)感(gan)器(qi)(qi)(qi),用(yong)(yong)于检测(ce)(ce)(ce)(ce)(ce)变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)内部(bu)不同位置(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)实时温(wen)(wen)度(du)(du)(du)(du)(du)(du);温(wen)(wen)度(du)(du)(du)(du)(du)(du)数(shu)(shu)据(ju)预(yu)(yu)处(chu)理(li)(li)模(mo)块(kuai),与(yu)光(guang)(guang)纤测(ce)(ce)(ce)(ce)(ce)温(wen)(wen)传(chuan)感(gan)器(qi)(qi)(qi)通(tong)讯连(lian)接(jie),用(yong)(yong)于对(dui)(dui)(dui)(dui)温(wen)(wen)度(du)(du)(du)(du)(du)(du)数(shu)(shu)据(ju)进(jin)行(xing)(xing)筛选(xuan);温(wen)(wen)度(du)(du)(du)(du)(du)(du)数(shu)(shu)据(ju)合成(cheng)模(mo)块(kuai),与(yu)温(wen)(wen)度(du)(du)(du)(du)(du)(du)数(shu)(shu)据(ju)预(yu)(yu)处(chu)理(li)(li)模(mo)块(kuai)通(tong)讯连(lian)接(jie),用(yong)(yong)于将(jiang)不同位置(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)温(wen)(wen)度(du)(du)(du)(du)(du)(du)数(shu)(shu)据(ju)进(jin)行(xing)(xing)合成(cheng),得到变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)实时运行(xing)(xing)温(wen)(wen)度(du)(du)(du)(du)(du)(du);温(wen)(wen)度(du)(du)(du)(du)(du)(du)数(shu)(shu)据(ju)校正模(mo)块(kuai),与(yu)温(wen)(wen)度(du)(du)(du)(du)(du)(du)数(shu)(shu)据(ju)合成(cheng)模(mo)块(kuai)通(tong)讯连(lian)接(jie),用(yong)(yong)于对(dui)(dui)(dui)(dui)合成(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)运行(xing)(xing)温(wen)(wen)度(du)(du)(du)(du)(du)(du)进(jin)行(xing)(xing)校正。能(neng)够改进(jin)传(chuan)统(tong)测(ce)(ce)(ce)(ce)(ce)温(wen)(wen)技术的(de)(de)(de)(de)(de)(de)(de)(de)不足(zu),提(ti)高(gao)(gao)了变(bian)(bian)(bian)压(ya)(ya)器(qi)(qi)(qi)温(wen)(wen)度(du)(du)(du)(du)(du)(du)检测(ce)(ce)(ce)(ce)(ce)的(de)(de)(de)(de)(de)(de)(de)(de)准(zhun)确性(xing)。

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