大型发电机定子绕组高频模型和参数

High Frequency Model and Parameters of the Stator Winding of the Large Turbine-Generater

本文提出了大型发电机定子绕组高频暂态模型和测量高频参数的方法。用ZL-5智能RLC阻抗测量仪测量了上海电机厂60MW、10.5kV发电机定子绕组在不同频率下的R、L、R_g参数值,且用EMTP计算了1.2/50μs雷电波作用下定子绕组的过电压情况,与实测结果吻合良好,误差小于3.5％。

This paper presents a high frequency model and describes the method of measuring high frequency parameters of the stator winding of a large turbine generator. The parameters R, L, C, Rg of 60 MW, 10.5 kV turbine generator in differert frequency were measured with a high quality impedance analyzer ZL-5. The lightning impulse wave (1.2/50μs) distribution is calculated with EMTP (Electromagnetic Transient Program, written by University of British Culumbia Canada). The experimental results show good correspondence with these computed and the error is less than 3.5%.