同步发电机进相机端电压安全域的解析计算方法

Analytical Calculation Method of Synchronous Generator Terminal Voltage Safety Region of Leading Phase Operation

为准确计算发电机进相机端电压安全域,本文建立了发电机进相的保留完整阻抗的单机无穷大系统模型,以该模型为基础给出了电压和发电机功率约束方程,得到了进相边界的解析表达式。针对等值系统阻抗和系统电压难以获得的问题,给出了一种精确计算方法。仿真结果表明:用本文计算方法所得到的功率极限具有很好的精确度,可以满足发电机进相计算的需要。

To solve the problem of calculating synchronous generator leading phase operation terminal voltage safety region,an infinite model for one synchronous generator leading phase operation is established in this pager.The analytical expression of generator leading phase operation boundary is derived from the model,and a simplified calculation method is proposed to determine the system voltage and impedance.The results of simulation for two generators prove that the precision and suitability of the proposed method are suitable for the generator leading phase operation calculation.