运行策略信息缺失条件下的HVAC系统设备模型校准方法
Calibration method of HVAC system equipment model under condition of operation strategy information lack
摘要：
性能准确的HVAC系统仿真模型对于研究建筑需求响应具有重要意义,模型校准是提高仿真结果可靠性的关键环节,但现实中会遇到运行策略信息缺失的情况,严重影响了校准结果的有效性。本文提出了一种适用于实际运行策略信息缺失条件下的模型校准方法,在设备性能优化校准前,增加运行策略校验环节,以皮尔逊相关系数作为评价指标判断运行策略是否准确。利用该方法可以在实测数据集中识别出运行策略准确数据集,以此为基础进行设备性能优化校准,从而确保校准结果的有效性。以某制冷站的冷却塔模型校准为例,验证了所提方法的校准效果。该方法可推广于其他HVAC设备模型的运行台数策略验证与名义性能参数校准中。
Abstract：
A simulation model of HVAC system with accurate performance is of great significance for studying building demand response. Model calibration is a key step in improving the reliability of simulation results, but the lack of operation strategy information will be encountered in reality, which seriously affects the effectiveness of calibration results. In this paper, a model calibration method suitable for the absence of actual operation strategy information is proposed. Before the equipment performance optimization calibration, an operation strategy verification step is added, and the Pearson correlation coefficient is used as the evaluation index to determine the accuracy of the operational strategy. By using this method, the accurate operational strategy datasets can be identified in the measured dataset, based on which the optimization calibration of equipment performance is carried out, to ensure the effectiveness of the calibration results. Taking the cooling tower model calibration of a refrigeration station as an example, the calibration effect of the proposed method is verified. This method can be extended to verify the number of operation units and calibrate the nominal performance parameters of other HVAC equipment models.
Keywords:operation strategy;information lack; model calibration; HVAC system; equipment; building demand response