微型燃气轮机与天然气管网接口建模及联合仿真研究

摘要

微型燃气轮机是冷热电联供系统中的能量交换枢纽,为了反映天然气管网和燃气轮机的相互影响,本文提出利用比例阀的动态模型建立两系统间接口模型,并在此基础上基于Matlab/Simulink完成微型燃气轮机与天然气管网联合仿真研究.算例分析表明,微型燃气轮机输出功率的波动将引起天然气管网运行的波动,天然气管网负荷的波动也将引起燃气轮机转速的波动,本文建立的接口模型能够较好地反映微型燃气轮机与天然气管网的耦合作用.%Microturbine is the energy exchange center in combined cooling,heating and power microgrid,and in order to show the interactions between microturbine and gas pipe network, based on Matlab/Simulink, propor-tional valve model is built and then the united simulation is achieved in this paper. Through simulation cases,the fluctuation of microturbine power will influence the gas pipe network, and the fluctuation of gas load will also cause the speed change of microturbine. The results demonstrate that the interface model is able to show the inter-actions between microturbine and gas pipe network effiently.