一种燃气轮机联合循环系统模型的分析与改进

摘要

依据已在国际上得到广泛应用的模型对燃气轮机联合循环系统的动态特性和临界频率特性进行仿真分析，根据模型对频率扰动的响应分析结果改进模型的温度控制模块，并比较分析改进效果。在此基础上，利用该模型研究联合循环系统在电网中的调频能力。仿真结果表明，改进后的模型具有更短的镇定时间和更强的鲁棒性，而且具有良好的调频能力。%Based on the dynamic model applied widely internationally ,the simulation analysis was conducted towards the dynamic behavior and critical frequency of gas turbine combined cycle plant . The temperature control block of model was enhanced according to the responses of system to frequency disturbance ,and the improvement effect was compared and analyzed .Then on this basis ,the frequency regulation of combined cycle system in power network was investigated using the model . The simulation results indicate that the modified model has shorter stabilization time ,better robustness and performance in power network frequency regulation .