广东电力
廣東電力
엄동전력
GUANGDONG ELECTRIC POWER
2015年
6期
66-69
,共4页
汽轮发电机%转子%匝间短路%故障诊断%故障定位
汽輪髮電機%轉子%匝間短路%故障診斷%故障定位
기륜발전궤%전자%잡간단로%고장진단%고장정위
steam turbine generator%rotor%turn short-circuit%fault diagnosis%fault positioning
针对目前大型汽轮发电机的转子匝间短路故障频发,但发电机转子故障的在线检测方法存在易受现场干扰误报,无法对故障点做出定位等缺点,以一起700 MW 的大型汽轮发电机跳机事故为案例,应用两极电压平衡原理,基于两极结构对称分布特性的直流电压分布试验方法,对发电机转子绕组的匝间短路故障进行故障诊断和定位分析,结果表明,该方法可以对发电机转子励磁绕组匝间短路故障进行精确定位。
針對目前大型汽輪髮電機的轉子匝間短路故障頻髮,但髮電機轉子故障的在線檢測方法存在易受現場榦擾誤報,無法對故障點做齣定位等缺點,以一起700 MW 的大型汽輪髮電機跳機事故為案例,應用兩極電壓平衡原理,基于兩極結構對稱分佈特性的直流電壓分佈試驗方法,對髮電機轉子繞組的匝間短路故障進行故障診斷和定位分析,結果錶明,該方法可以對髮電機轉子勵磁繞組匝間短路故障進行精確定位。
침대목전대형기륜발전궤적전자잡간단로고장빈발,단발전궤전자고장적재선검측방법존재역수현장간우오보,무법대고장점주출정위등결점,이일기700 MW 적대형기륜발전궤도궤사고위안례,응용량겁전압평형원리,기우량겁결구대칭분포특성적직류전압분포시험방법,대발전궤전자요조적잡간단로고장진행고장진단화정위분석,결과표명,해방법가이대발전궤전자려자요조잡간단로고장진행정학정위。
In allusion to defects of frequent rotor turn short-circuit fault of large steam turbine generator and online detection method for rotor fault is easy to be misinformed by field disturbance which could not make correct positioning on the fault point,this paper carries on fault diagnosis and positioning analysis on the turn short-circuit fault of rotor winding by taking one trip accident of 700 MW large steam turbine generator for example,applying two-stage voltage balance principle and u-sing testing method for direct current voltage distribution based on characteristic of two-stage structure symmetric distribu-tion. The result indicates that this method could realize accurate positioning on turn short-circuit fault of rotor exciting wind-ing of the generator.