着(zhe)(zhe)经济全球化的(de)(de)进(jin)行，电(dian)(dian)网(wang)(wang)系(xi)统(tong)(tong)(tong)发(fa)(fa)展十分迅速(su)，传统(tong)(tong)(tong)的(de)(de)配套设(she)施(shi)已经不(bu)(bu)能(neng)满足电(dian)(dian)网(wang)(wang)的(de)(de)需求。电(dian)(dian)网(wang)(wang)承受的(de)(de)负担(dan)越(yue)来(lai)(lai)越(yue)大(da)(da)，对环(huan)网(wang)(wang)柜(ju)质量(liang)也提出(chu)(chu)了更(geng)高(gao)要(yao)求。环(huan)网(wang)(wang)柜(ju)在长期(qi)使用后，会(hui)出(chu)(chu)现设(she)备运行缓慢、反(fan)应不(bu)(bu)灵敏、温(wen)(wen)度难以控(kong)制的(de)(de)现象(xiang)，降低环(huan)网(wang)(wang)柜(ju)的(de)(de)寿(shou)命安全保障。由于夏季(ji)温(wen)(wen)度很(hen)(hen)高(gao)，随(sui)着(zhe)(zhe)环(huan)网(wang)(wang)柜(ju)吸收的(de)(de)热量(liang)增多，负担(dan)也会(hui)变大(da)(da)。电(dian)(dian)网(wang)(wang)系(xi)统(tong)(tong)(tong)增加(jia)的(de)(de)电(dian)(dian)荷使温(wen)(wen)度快速(su)升高(gao)，如(ru)果温(wen)(wen)度检测(ce)系(xi)统(tong)(tong)(tong)不(bu)(bu)能(neng)及(ji)时做出(chu)(chu)反(fan)应，将(jiang)可能(neng)迅速(su)破坏环(huan)网(wang)(wang)柜(ju)，甚至引起火灾(zai)、漏电(dian)(dian)等事(shi)故(gu)。测(ce)温(wen)(wen)装(zhuang)(zhuang)置(zhi)(zhi)设(she)置(zhi)(zhi)不(bu)(bu)好(hao)会(hui)增加(jia)事(shi)故(gu)的(de)(de)发(fa)(fa)生(sheng)率，超(chao)负荷、超(chao)年限使用测(ce)温(wen)(wen)装(zhuang)(zhuang)置(zhi)(zhi)会(hui)**减低装(zhuang)(zhuang)置(zhi)(zhi)的(de)(de)灵敏度，给测(ce)试带(dai)来(lai)(lai)负面影(ying)响。随(sui)着(zhe)(zhe)城市化进(jin)程的(de)(de)加(jia)快，用电(dian)(dian)高(gao)峰期(qi)输电(dian)(dian)量(liang)巨大(da)(da)，给环(huan)网(wang)(wang)柜(ju)带(dai)来(lai)(lai)了很(hen)(hen)大(da)(da)负担(dan)。无源测(ce)温(wen)(wen)无线测(ce)温(wen)(wen)系(xi)统(tong)(tong)(tong)超(chao)高(gao)。福建智能(neng)开(kai)关柜(ju)无源无线测(ce)温(wen)(wen)系(xi)统(tong)(tong)(tong)acx4i-dk1

2.2系(xi)(xi)统结构(gou)系(xi)(xi)统整(zheng)体结构(gou)如(ru)图1所(suo)示(shi)，无(wu)线(xian)测(ce)(ce)温(wen)(wen)传感(gan)器固定在(zai)高防开(kai)(kai)(kai)关(guan)三相动触(chu)头上，内置(zhi)纽扣(kou)电池，无(wu)线(xian)测(ce)(ce)温(wen)(wen)收发器固定在(zai)高防开(kai)(kai)(kai)关(guan)前面板，两者之间采用Zigbee方式(shi)进(jin)行(xing)无(wu)线(xian)通(tong)信。多个高防开(kai)(kai)(kai)关(guan)内的(de)无(wu)线(xian)测(ce)(ce)温(wen)(wen)收发器组成RS-485串行(xing)总线(xian)接入一台矿用本安型显示(shi)控(kong)制(zhi)器，显示(shi)控(kong)制(zhi)器的(de)使(shi)用触(chu)摸屏(ping)。打开(kai)(kai)(kai)MCGS嵌入版(ban)软件后，新建工程选择好对(dui)应触(chu)摸屏(ping)型号，在(zai)设备(bei)窗口(kou)进(jin)行(xing)设备(bei)组态(tai)，首(shou)先添加通(tong)用串口(kou)父设备(bei)，双(shuang)击并(bing)进(jin)入图2所(suo)示(shi)的(de)设置(zhi)，其次添加莫迪康(kang)ModbusRTU,如(ru)找不到可在(zai)设备(bei)管理(li)中的(de)通(tong)用设备(bei)—ModBusRTU中添加，双(shuang)击并(bing)进(jin)入图3所(suo)示(shi)界面，增(zeng)加设备(bei)通(tong)道(dao)，根据表绍兴原装开(kai)(kai)(kai)关(guan)柜无(wu)源无(wu)线(xian)测(ce)(ce)温(wen)(wen)系(xi)(xi)统hb404z-a接线(xian)方法无(wu)线(xian)测(ce)(ce)温(wen)(wen)传感(gan)器的(de)原理(li)是什么(me)？

在(zai)(zai)工业系统(tong)中，温(wen)(wen)度(du)是表征设(she)备(bei)(bei)(bei)(bei)运(yun)行正(zheng)常(chang)的(de)(de)(de)(de)重要(yao)(yao)参数(shu)。随着工业用电(dian)(dian)负荷的(de)(de)(de)(de)不(bu)断(duan)增长，为了避免因设(she)备(bei)(bei)(bei)(bei)发(fa)热而导致的(de)(de)(de)(de)突发(fa)事(shi)件，温(wen)(wen)度(du)的(de)(de)(de)(de)自动(dong)监测已经(jing)成(cheng)为工业安全生产(chan)的(de)(de)(de)(de)重要(yao)(yao)环(huan)节(jie)。运(yun)行中的(de)(de)(de)(de)电(dian)(dian)气设(she)备(bei)(bei)(bei)(bei)通常(chang)工作在(zai)(zai)高(gao)(gao)电(dian)(dian)压和大电(dian)(dian)流状态，设(she)备(bei)(bei)(bei)(bei)中存在(zai)(zai)的(de)(de)(de)(de)某些(xie)缺(que)陷(xian)会导致设(she)备(bei)(bei)(bei)(bei)部件的(de)(de)(de)(de)异常(chang)温(wen)(wen)度(du)升高(gao)(gao)。造成(cheng)温(wen)(wen)度(du)与接触电(dian)(dian)阻值(zhi)的(de)(de)(de)(de)恶(e)性循环(huan)，**终会导致设(she)备(bei)(bei)(bei)(bei)不(bu)能(neng)正(zheng)常(chang)工作，甚(shen)至烧毁，温(wen)(wen)度(du)过高(gao)(gao)可(ke)能(neng)会引起燃烧、甚(shen)至设(she)备(bei)(bei)(bei)(bei)损坏或(huo)质量事(shi)故(gu)。该技术是电(dian)(dian)网智能(neng)、安全、高(gao)(gao)效发(fa)展(zhan)的(de)(de)(de)(de)重要(yao)(yao)技术之一，对(dui)减(jian)少电(dian)(dian)网固定资产(chan)投资支出、减(jian)少电(dian)(dian)网运(yun)行费用、提高(gao)(gao)供电(dian)(dian)可(ke)靠性及提高(gao)(gao)运(yun)营管理水平有着重要(yao)(yao)的(de)(de)(de)(de)意(yi)义(yi)。

由温(wen)(wen)升异(yi)常引起的(de)(de)高(gao)压(ya)开关(guan)(guan)(guan)柜(ju)(ju)内的(de)(de)短路(lu)故(gu)障(zhang)，可(ke)能(neng)(neng)会(hui)造成设备局部(bu)烧(shao)毁，甚至全部(bu)报(bao)废(fei)，造成重大的(de)(de)人(ren)员伤亡和财产损失。因(yin)(yin)(yin)(yin)此对高(gao)压(ya)开关(guan)(guan)(guan)柜(ju)(ju)内温(wen)(wen)升重点区域进(jin)行(xing)(xing)实时温(wen)(wen)度监(jian)测，才能(neng)(neng)有效保障(zhang)电力(li)系(xi)(xi)(xi)统(tong)更加安全可(ke)靠(kao)运行(xing)(xing)。ND-302开关(guan)(guan)(guan)柜(ju)(ju)无源无线(xian)测温(wen)(wen)系(xi)(xi)(xi)统(tong)由显示(shi)终端、无线(xian)采集主机以及无源无线(xian)传(chuan)感(gan)器组(zu)成，系(xi)(xi)(xi)统(tong)采用(yong)先进(jin)的(de)(de)无线(xian)、无源传(chuan)感(gan)器技(ji)术，具(ju)有更可(ke)靠(kao)、更安全、更智能(neng)(neng)等优点，是当(dang)前开关(guan)(guan)(guan)柜(ju)(ju)温(wen)(wen)度在(zai)线(xian)监(jian)测方案的(de)(de)比较好选择。因(yin)(yin)(yin)(yin)“过热(re)温(wen)(wen)升”原因(yin)(yin)(yin)(yin)引起的(de)(de)高(gao)压(ya)开关(guan)(guan)(guan)柜(ju)(ju)运行(xing)(xing)故(gu)障(zhang)，约占高(gao)压(ya)开关(guan)(guan)(guan)柜(ju)(ju)总故(gu)障(zhang)率的(de)(de)36%，成为引发(fa)电力(li)系(xi)(xi)(xi)统(tong)故(gu)障(zhang)的(de)(de)主要原因(yin)(yin)(yin)(yin)之一。电气(qi)设备测温(wen)(wen)的(de)(de)必要性电力(li)系(xi)(xi)(xi)统(tong)的(de)(de)发(fa)展将向高(gao)电压(ya)。

测温(wen)(wen)模块采(cai)用恒压(ya)分(fen)段测量(liang)法(fa)，来适(shi)应NTC热(re)(re)敏(min)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)在(zai)(zai)大(da)范围(wei)测温(wen)(wen)下(xia)的高(gao)精度(du)要(yao)(yao)求(qiu)。考虑ADC采(cai)样(yang)精度(du)，场效(xiao)应管压(ya)降、串联电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)精度(du)及NTC热(re)(re)敏(min)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)精度(du)，NTC热(re)(re)敏(min)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)的相(xiang)对误差**大(da)值为(wei)(wei)1.594%。测温(wen)(wen)误差值为(wei)(wei)0.8℃。5、系统程序设计(ji)选(xuan)用IAREWforSTM8作为(wei)(wei)开(kai)发(fa)环境(jing)，采(cai)用C语言进行程序设计(ji)。当取电(dian)(dian)(dian)(dian)(dian)(dian)模块输出(chu)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)达(da)**小工作电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)时，主控(kong)模块上电(dian)(dian)(dian)(dian)(dian)(dian)，配置系统时钟，开(kai)启RTC（实时时钟）停机(ji)唤醒中断。如果信(xin)号(hao)发(fa)射(she)成(cheng)功(gong)，则节点进行低功(gong)耗配置，并且进入活跃停机(ji)模式。若(ruo)信(xin)号(hao)发(fa)射(she)失败，则重新测量(liang)温(wen)(wen)度(du)并再次发(fa)射(she)信(xin)号(hao)。由于(yu)高(gao)压(ya)设备检修(xiu)周期较长，要(yao)(yao)求(qiu)传感器免(mian)维(wei)护(hu)周期也(ye)长，电(dian)(dian)(dian)(dian)(dian)(dian)池在(zai)(zai)常(chang)温(wen)(wen)下(xia)工作可(ke)以(yi)达(da)到3年，在(zai)(zai)高(gao)温(wen)(wen)下(xia)寿(shou)命急剧下(xia)降，因(yin)此(ci)必(bi)须找到一(yi)种能(neng)替(ti)代电(dian)(dian)(dian)(dian)(dian)(dian)池的方(fang)法(fa)；电(dian)(dian)(dian)(dian)(dian)(dian)磁感应供(gong)电(dian)(dian)(dian)(dian)(dian)(dian)能(neng)解决以(yi)上问(wen)题。目前(qian)数据表明(ming)一(yi)次电(dian)(dian)(dian)(dian)(dian)(dian)流在(zai)(zai)5A的时候能(neng)够正常(chang)工作，6000A电(dian)(dian)(dian)(dian)(dian)(dian)流下(xia)也(ye)不(bu)会发(fa)热(re)(re)发(fa)抖(dou)。今年计(ji)划做20000A电(dian)(dian)(dian)(dian)(dian)(dian)流实验(yan)。浙江高(gao)勒电(dian)(dian)(dian)(dian)(dian)(dian)气(qi)科技有限(xian)公司是一(yi)家专业(ye)从(cong)事无线测温(wen)(wen)装置。上海(hai)原装开(kai)关(guan)柜无源(yuan)无线测温(wen)(wen)系统价格实惠

无线测(ce)温传感器的(de)原理？福建智能开关柜无源无线测(ce)温系统acx4i-dk1

电力(li)设备测温(wen)(wen)(wen)技术(shu)包括：热敏电阻、半导体、红外(wai)测温(wen)(wen)(wen)、光纤(xian)测温(wen)(wen)(wen)、集成电路测温(wen)(wen)(wen)、声(sheng)表面波测温(wen)(wen)(wen)，对它们的优缺(que)点(dian)进(jin)行了(le)比较。通(tong)过(guo)(guo)对比分析(xi)可以看到，声(sheng)表面波测温(wen)(wen)(wen)技术(shu)不(bu)(bu)需要电池(chi)供电，虽然(ran)传输距离(li)不(bu)(bu)如(ru)有源传感器(qi)，但十几米的传输距离(li)已经足够(gou)，且具备耐高温(wen)(wen)(wen)，抗高电压(ya)和强电磁干扰的特(te)点(dian)，拥有寿(shou)命长，声(sheng)表面波传感器(qi)安装的位置，主要针对开(kai)关(guan)柜内电气接点(dian)，如(ru)母排、断路器(qi)动/静(jing)触头、变(bian)压(ya)器(qi)进(jin)出(chu)线接点(dian)、电缆接头，户外(wai)如(ru)刀闸、断路器(qi)、变(bian)压(ya)器(qi)进(jin)出(chu)线接点(dian)等。检测开(kai)关(guan)设备因老化、接触不(bu)(bu)良、电流过(guo)(guo)载等因素(su)引(yin)起温(wen)(wen)(wen)升(sheng)过(guo)(guo)高等问(wen)题，当(dang)温(wen)(wen)(wen)度过(guo)(guo)高超过(guo)(guo)预设报警值时能及时报警，并通(tong)知运维人(ren)员处理(li)，减少设备的损失。福(fu)建(jian)智(zhi)能开(kai)关(guan)柜无源无线测温(wen)(wen)(wen)系(xi)统acx4i-dk1

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