文档介绍：维普资讯
第 24卷第 3期中国电机 lI 程学报、,
2004年 3月 ProceedingsoftheCSEE ~
文章编号:0258—8013(2004)03— 中图分类号:TM311 文献标识码:A 学科分类号:470-4024
基于状态监测的汽轮发电机定子
铁心温度标准值的确定
李俊卿,李和明
(华北电力大学电气工程学院,河北保定 071003)
DETERM[INATIoNoF STANDARD TEM PERA ,REoF Sr】 ToRIRoN C0 EIN
TURBoG ENERAToRFoR CoNDITIoN MoNIToR ING
LIJun—qing,LI He—ming
(School of Electrical Engineering,North Power 003,China)University,BaodingElectrical China of(SchoolElectric 1 07
ABSTRAC I In accordance withthe basic theory of machine. 的增加,定子漏磁密尤其是端部漏磁密增大,导致
the temperature model ofstator iron—core in turbogenemtor is 定子铁心的故障率增加,因此对定子铁心实旖状态
firstly firstly temperature of stator iron—COrerelated is 监测是非常必要的⋯。定子铁心故障中,热故障占
with the active power,reactive power,stator voltage and
了很大比重,如定子铁心片间短路、通风道堵塞、
temperature of cooling material parameters of the
进相运行等都会引起定子铁心局部过热。
temperature model ofstator iron—core are identified usingthe
实际运行的汽轮发电机,在定子铁心的中间
M ethod ofLeast— temperature model Canbe used
tothedetermination of standardtemperature of iron—corestator 段及边段都装有测温元件。目前,汽轮发电机的国
onvarious operating con~tions inorder tomonitor generator 际标准及我国的标准都对这些测温点的温度限值作
operating and diagnosis the end,the temperature 了明确规定(如定子铁心 120℃等)。但是国标中
model is verified to be correct with the the QFSN一220—2with becorrect to model veri