基于Matlab/Simulink的液压式风力致热系统仿真研究

Simulation of Hydraulic Wind-Heating System Based on Matlab/Simulink

目的解决我国风力发电量急剧增加所带来的“弃风限电”问题,提高风能作为一种清洁可再生能源在北方供暖季中的利用率,提出液压式风力致热系统。方法以张家口地区作为研究背景,利用Matlab/Simulink及PID控制仿真技术分别建立了组合风速、风力机、致热器及换热器4个子系统模型,采用模块化封装的方法得到液压式风力致热系统仿真模型,并对模拟结果进行分析。结果设计的组合风速模型与实际风速变化特征相吻合;致热仿真模型经过17 h运行可将4 m 3的液压油从10℃加热至80℃。风力机模型的最佳比例系数为0.81,液压式风力致热系统最大致热效率为55.8%。结论液压式风力致热系统模型的建立为风能在供暖方向的利用提供了新的方法。

In order to solve the problem of“abandoning wind and limiting electricity”caused by the sharp increase of wind power generation in China and to improve the utilization rate of wind energy as a clean and renewable energy in the northern heating season,a hydraulic wind heating system was proposed.Taken Zhangjiakou area as a research background,four subsystem models of combined wind speed,wind turbine,heater and heat exchanger were established by Matlab/Simulink and PID control simulation technology.A simulation model of a hydraulic wind heating system was obtained by a modular packaging method.The simulation results are analyzed that the characteristics of wind speed change simulated by the designed combined wind speed model is consistent with that of actual wind speed change;the heating simulation model can simulate that 4 m 3 of hydraulic oil is heated from 10℃to 80℃after 17 h operation of heating system.The optimal scaling coefficient of the wind turbine model is 0.81.The maximum heating efficiency of the hydraulic wind heating system is 55.8%.