汽轮发电机异步运行的数学模型及失磁仿真  

Mathematic Model of Turbogenerators during Asynchronous Operation and Simulation of Loss of Field

作　　者：郭可忠[1] 于奇志 刘笙[1] 

机构地区：[1]上海交通大学

出　　处：《大电机技术》1994年第6期12-19,共8页Large Electric Machine and Hydraulic Turbine

摘　　要：简要介绍了Ｃａｎａｙ分析的汽轮发电机实心转子各涡流阻抗，并利用其参数计算公式获得随转差变化的变参数模型。然后运用计入调速器、调压器、变压器和输电线的单机无限大系统对１２５ＭＷ和３００ＭＶＡ汽轮发电机组进行失磁仿真。其结果与现场录波图比较，各变量的变化周期和波形相当接近，得到较理想的结果。Study about impedance of eddy current circuits in solid rotors of the turbogenerators analysed by Canay is introduced in brief.The variable-Parameter mathematical model changed with slip is obtained by using of Canay's calculating formulas.Then simulation of loss of field for the 125MW and 300MVA turbogenerator sets on infinite system,including governor, voltage-regulator,transformer and transmission line,is conducted.Its result is compared with that measured at site, changed cycles for variables are relatively close to their wayes.The results are quite good.

关 键 词：汽轮发电机 数学模型 失磁 仿真 

分 类 号：TM311.06[电气工程—电机]