基于时域的汽轮发电机暂态仿真

Transient Simulation of Steam-turbine Generator Based on Timedomain

结合大型火电厂实时仿真机对汽轮发电机高逼真度仿真的要求,通过Park方程建立能精确描述其暂态过程的状态方程,并对时变的系统矩阵A和控制矩阵B进行改进处理,结合四阶Runge-Kutta法得到更省计算量的数值解法.最后编写相应的仿真程序,对某360 MW汽轮发电机进行突加负载仿真试验,仿真结果显示文中提出的方法适合实时仿真机的发电机模型.

For achieving the high-fidelity simulation of steam-turbine generator on the real-time simulator of coal fired plant, the paper establishs a group of state equations based on Parkg equation, which can accurately describe its transient process. Then a kind of time-saved numerical solution in terms of four-order Runge-Kutta method is proposed through the modified processing to the time-dependent system matrix A and control matrix B. Finally a program is coded to simulate the emergency load process of one 360MW steam-turbine generator, the result indicates that the method of this paper can exactly apply on the generator model of real-time simulator.