汽轮发电机组机电联合振荡计算方法

本文采用梯形积分法,离散集中质量轴系模型的运动方程,并用数值稳定性好的雷卡迪传递矩陈方法计算轴系的扭振瞬态响应,实现了汽轮发电机组机电联合振荡过程的时域仿真。文中导出的机网接口方法,可以方便地用于发电机与电网差分方程的联解,通过对单机无穷大系统重合闸过程的计算,初步证明了本方法的有效性。

A New Computation Method for Electro-Mechanical Oscillations of Turbine Generator ser

This paper presents a new time-domain method for Simulating interactions between large steam turbo-generators and electrical transmission systems. The torsional vibration equations of shaft model with lumped masses are transformed into difference equations with the trapezoidal rule of integration. Numerically stable Riccati transfer matrox method is used to calculate the transient response of the shaft system. The newly developed interface technigue makes the joint solution of the generator and network difference equations very simple Validaty of method is proved by its application to investigate the high-speed reclosing process in a simple power system. ent response.