怎么买球

发电机转子测温

水轮发电(dian)(dian)机(ji)定子测(ce)温(wen)(wen),转(zhuan)子磁(ci)极测(ce)温(wen)(wen)、发电(dian)(dian)机(ji)绕组测(ce)温(wen)(wen)最好的方(fang)式就是(shi)使用荧(ying)光(guang)光(guang)纤(xian)测(ce)温(wen)(wen)、不是(shi)热电(dian)(dian)阻测(ce)温(wen)(wen)、不是(shi)无线红外测(ce)温(wen)(wen)、也(ye)不是(shi)砷化镓半导(dao)体(ti)测(ce)温(wen)(wen)。

水力发电(dian)(dian)在我国能(neng)源工(gong)业中(zhong)所(suo)占的(de)(de)(de)比重较大。水电(dian)(dian)机(ji)(ji)(ji)(ji)(ji)组(zu)(zu)(zu)(zu)单机(ji)(ji)(ji)(ji)(ji)容量越来(lai)越大,对电(dian)(dian)网(wang)稳定(ding)运(yun)行的(de)(de)(de)影响(xiang)(xiang)也越来(lai)越大,机(ji)(ji)(ji)(ji)(ji)组(zu)(zu)(zu)(zu)稳定(ding)性(xing)(xing)和(he)安(an)(an)全运(yun)行状(zhuang)态直接(jie)关(guan)系到水电(dian)(dian)站(zhan)的(de)(de)(de)安(an)(an)全,已成(cheng)为大中(zhong)型(xing)水电(dian)(dian)机(ji)(ji)(ji)(ji)(ji)组(zu)(zu)(zu)(zu)的(de)(de)(de)重要性(xing)(xing)能(neng)指标。大量事实证明(ming),计划体制维修(xiu)成(cheng)本昂(ang)贵(gui),维护时(shi)间(jian)过长,自动(dong)化程度低(di),还不能(neng)完全满足设备(bei)日益增长的(de)(de)(de)维护需求。实现“无人值(zhi)守”是(shi)电(dian)(dian)站(zhan)现代(dai)化管理的(de)(de)(de)方向,如(ru)何保(bao)证水电(dian)(dian)机(ji)(ji)(ji)(ji)(ji)组(zu)(zu)(zu)(zu)在这种管理模式(shi)下(xia)安(an)(an)全、可靠的(de)(de)(de)运(yun)行,是(shi)国内外近年来(lai)一直研究的(de)(de)(de)技(ji)术问(wen)题。提(ti)高(gao)设备(bei)维护的(de)(de)(de)针(zhen)对性(xing)(xing),及时(shi)了解(jie)设备(bei)的(de)(de)(de)运(yun)行状(zhuang)态,提(ti)高(gao)设备(bei)利(li)用率是(shi)解(jie)决这一问(wen)题的(de)(de)(de)有效途(tu)径。转子(zi)绕组(zu)(zu)(zu)(zu)匝(za)间(jian)短(duan)路是(shi)发电(dian)(dian)机(ji)(ji)(ji)(ji)(ji)组(zu)(zu)(zu)(zu)常见(jian)的(de)(de)(de)故障,匝(za)间(jian)短(duan)路会形成(cheng)短(duan)路电(dian)(dian)流,导致局(ju)部过热, 降低(di)发电(dian)(dian)机(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)无功(gong)功(gong)率,引起(qi)机(ji)(ji)(ji)(ji)(ji)组(zu)(zu)(zu)(zu)振动(dong)加剧,影响(xiang)(xiang)电(dian)(dian)机(ji)(ji)(ji)(ji)(ji)寿命甚(shen)至烧毁电(dian)(dian)机(ji)(ji)(ji)(ji)(ji),及时(shi)诊(zhen)断出发电(dian)(dian)机(ji)(ji)(ji)(ji)(ji)转子(zi)绕组(zu)(zu)(zu)(zu)匝(za)间(jian)短(duan)路是(shi)保(bao)障电(dian)(dian)机(ji)(ji)(ji)(ji)(ji)正常运(yun)行的(de)(de)(de)重要手段(duan)。

水轮发(fa)电(dian)机(ji)转子(zi)(zi)磁(ci)极(ji)(ji)(ji)主要由(you)铁(tie)芯、励(li)磁(ci)绕(rao)(rao)组(zu)、阻(zu)尼绕(rao)(rao)组(zu)、上下托板(ban)等组(zu)成,主要作用(yong)是产生(sheng)磁(ci)场,针对水轮发(fa)电(dian)机(ji)转子(zi)(zi)绕(rao)(rao)组(zu)匝间短(duan)路(lu)无法(fa)预警以及短(duan)路(lu)后故障(zhang)点查找困难的(de)问(wen)题,怎么买球自主研发(fa)的(de)荧光光纤(xian)水轮发(fa)电(dian)机(ji)转子(zi)(zi)磁(ci)极(ji)(ji)(ji)温(wen)(wen)度(du)(du)监(jian)测(ce)(ce)(ce)(ce)系(xi)统。光纤(xian)测(ce)(ce)(ce)(ce)温(wen)(wen)系(xi)统采用(yong)荧光光纤(xian)接(jie)触式(shi)(shi)测(ce)(ce)(ce)(ce)温(wen)(wen)方(fang)(fang)法(fa)对水轮发(fa)电(dian)机(ji)转子(zi)(zi)绕(rao)(rao)组(zu)每(mei)一个磁(ci)极(ji)(ji)(ji)温(wen)(wen)度(du)(du)进(jin)行(xing)监(jian)测(ce)(ce)(ce)(ce),并以数值温(wen)(wen)度(du)(du)的(de)形式(shi)(shi)显(xian)示(shi),采用(yong)光纤(xian)测(ce)(ce)(ce)(ce)温(wen)(wen)方(fang)(fang)法(fa)对转子(zi)(zi)温(wen)(wen)度(du)(du)进(jin)行(xing)测(ce)(ce)(ce)(ce)量。给出了(le)实(shi)(shi)时(shi)(shi)温(wen)(wen)度(du)(du)数据,并进(jin)行(xing)了(le)分析。分析结果表明,光纤(xian)测(ce)(ce)(ce)(ce)温(wen)(wen)系(xi)统能够实(shi)(shi)时(shi)(shi)监(jian)测(ce)(ce)(ce)(ce)当前转子(zi)(zi)中每(mei)个磁(ci)极(ji)(ji)(ji)的(de)温(wen)(wen)度(du)(du),对温(wen)(wen)度(du)(du)异常的(de)磁(ci)极(ji)(ji)(ji)线圈(quan)位(wei)置能够及时(shi)(shi)准(zhun)确定位(wei),有效节省了(le)故障(zhang)磁(ci)极(ji)(ji)(ji)的(de)排查检修(xiu)时(shi)(shi)间,提(ti)高(gao)了(le)工作效率和经济效益。

绝缘(yuan)和机(ji)组(zu)(zu)(zu)温(wen)度监(jian)测是(shi)水(shui)(shui)轮发电(dian)(dian)机(ji)组(zu)(zu)(zu)状态监(jian)测的(de)重要(yao)方(fang)面,对(dui)于提高(gao)机(ji)组(zu)(zu)(zu)运(yun)行可靠(kao)性(xing)和稳定(ding)性(xing)有很(hen)大意义。转子(zi)绕(rao)组(zu)(zu)(zu)匝间(jian)短(duan)路(lu)是(shi)发电(dian)(dian)机(ji)组(zu)(zu)(zu)常(chang)(chang)(chang)见的(de)故障(zhang),匝间(jian)短(duan)路(lu)会形成短(duan)路(lu)电(dian)(dian)流(liu),导(dao)致(zhi)局部过热(re),故障(zhang)初(chu)期,短(duan)路(lu)匝数(shu)较少,转子(zi)电(dian)(dian)流(liu)较小(xiao),转子(zi)温(wen)度较低,绝缘(yuan)层虽然(ran)被(bei)烧穿(chuan),但仍(reng)存(cun)在微小(xiao)间(jian)隙(xi),不(bu)会影(ying)响机(ji)组(zu)(zu)(zu)的(de)正常(chang)(chang)(chang)运(yun)行,同(tong)时故障(zhang)特征不(bu)明显,难以及时监(jian)测,常(chang)(chang)(chang)常(chang)(chang)(chang)被(bei)忽略。水(shui)(shui)轮发电(dian)(dian)机(ji)转子(zi)通过主轴(zhou)与水(shui)(shui)轮机(ji)连接,是(shi)水(shui)(shui)轮发电(dian)(dian)机(ji)的(de)重要(yao)组(zu)(zu)(zu)成部分(fen),用(yong)(yong)荧(ying)光(guang)光(guang)纤测温(wen)系统,精确(que)测量(liang)水(shui)(shui)轮发电(dian)(dian)机(ji)每个转子(zi)绕(rao)组(zu)(zu)(zu)表面的(de)温(wen)度,能够(gou)准(zhun)确(que)定(ding)位故障(zhang)磁极,并能给予图形实时显示(shi)和数(shu)据储(chu)存(cun),荧(ying)光(guang)光(guang)纤采用(yong)(yong)耐高(gao)压(ya)的(de)、低功耗、抗干扰能力强(qiang)、反应迅速的(de)荧(ying)光(guang)光(guang)纤测温(wen)传感(gan)器测量(liang)并计算转子(zi)绕(rao)组(zu)(zu)(zu)平均温(wen)度。

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