【摘要】 分析了汽轮发电机失磁异步运行的４种数学模型：Ｐａｒｋ模型、计及实心转子涡流的定参数模型、计及实心转子涡流的ｄ轴三绕组变参数模型和计及实心转子涡流的ｄ轴两绕组变参数模型。后３种模型ｑ轴均有两绕组，然后运用计入调速器、调压器、变压器和输电线的单机无穷大系统分别对１２５ＭＷ机组进行了失磁仿真。其结果与现场录波图相比较，从而得出较为理想的数学模型。更多还原

【Abstract】 Four kinds of mathematical models of turbogenerators under asynchronous operation during loss of field are analyzed in this paper: the PARK model, the constant parameter model considering eddy current circuit in solid rotors, the variable parameter model considering eddy current circuits in solid rotors with three windings at direct axis, the variable parameter model considering eddy current circuits in solid rotors and with two windings at direct axis. Except the PARK model, in the rest models there are two windings at quadrature axis. The simulations of loss of field for the 125MW turbogenerator sets on infinite system, including governor, voltage regulator, transformer and transmission line are performed. Comparing the simulation result with the oscillograph on site, a more ideal mathematical model is obtained.更多还原