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用直轴运算电抗的频率特性和二维正弦电磁场的有限元解法,求得了水轮发电机的直轴瞬态电抗。为计及励磁绕组的端部漏磁,用归算法把端部漏磁导并入了直线部分。为保证励磁绕组每匝的感应电流相等,对励磁绕组施加了串联约束。最后通过实例计算,比较了施加与不加串联约束对瞬态电抗值的影响。
The direct-axis transient reactance of hydro-generator was obtained by using the frequency characteristics of the direct-axis reactive reactance and the finite element method of the two-dimensional sinusoidal electromagnetic field. To account for the end of the field winding magnetic leaking, the end of leakage flux incorporated into the straight part of the algorithm. In order to ensure that the magnetizing winding has the same induction current per turn, a series constraint is imposed on the field winding. Finally, the influence of transient reactance value with and without series connection on the reactance is compared by the example calculation.