发电机自励磁的判据及现场实例计算分析  

Criterion for Power Generator Self-excitation and Case Calculation and Analysis

作　　者：田旭[1] 韩春雷[2] 张博[1] 陶昕[1] 李楠[1] 

机构地区：[1]国网青海省电力公司经济技术研究院,青海西宁810008 [2]国网浙江省电力公司宁波供电公司,浙江宁波315000

出　　处：《青海电力》2014年第F12期7-9,共3页Qinghai Electric Power

摘　　要：末端电网水电站远离负荷中心,当电机带空载长线运行时,容易发生自励磁过电压。文章介绍发电机带空载长线的速算法、阻抗比较法、圆图法、充电特性法等4种自励磁判据,应用其中一种判据方法,作了实例分析计算。In a hydropower station at gird end remote from load center, the generator experiences easily self-excitation induced over voltage in the case of operation with a long line of no load. This paper gives an introduction to the criterions for self-excitation in the case of operation with long line of no load such as quick calculation method, impedance comparison method, circle diagram method and charging characteristics method. A case calculation and analysis are also given.

关 键 词：自励磁 实例 计算 

分 类 号：TM31[电气工程—电机]