基于TRNSYS的区域供热系统仿真与模型验证

Simulation and Model Validation of Regional Heating System Based on TRNSYS

本文基于TRNSYS开发了将动态水力工况与实时室内温度相结合的仿真模型,该模型可以模拟动态水力工况下,区域供热系统中各建筑物的热动态特性。通过将仿真数据与采集到的实际室内温度数据进行对比,验证了模型的准确性。然后,通过运行验证后的仿真模型,证明了基于室内温度的低温控制策略的可行性。仿真结果表明,在不同的水力工况下,各建筑热模型的最大误差为1.23℃,最大标准差为0.54℃;在采暖能耗方面该结果,相对误差的最大值为5.1%,整个系统各个建筑的采暖能耗相对误差平均值不超过3%。模型具有较高的模拟精度,可以满足工程的实际应用。

In this paper,based on TRNSYS,a simulation model combining dynamic hydraulic conditions and real-time indoor temperature was developed to simulate the thermal dynamic characteristics of each building in the regional heating system under dynamic hydraulic conditions.The accuracy of the model was further verified by comparing the simulated data with the actual indoor temperature data collected;then,the feasibility of the proposed low-temperature control strategy based on indoor temperature was proved by running the validated simulation model.The simulation results show that,under different hydraulic conditions,the maximum error and maximum standard deviation of each building thermal model are 1.23 ℃ and 0.54 ℃ respectively.In terms of heating energy consumption,the maximum value of the relative error is 5.1%,and the average value of the relative error for each building in the entire system is smaller than 3%.Therefore,the model has proven to have high simulation accuracy and can meet the practical application of engineering.