基于能量平衡的暖通空调系统故障检测方法
Fault detection in HVAC systems based on energy balances

暖通空调在长期运行过程中，设备和传感器故障时有发生，不仅给暖通系统的运行带来安全风险，也是导致建筑能源浪费的主要原因之一。该文针对建筑暖通空调系统故障检测问题，分析了暖通空调系统能量传输和变换的主要环节，建立了建筑暖通空调能量网络模型。在此基础上，利用能量守恒这一基本物理定律，给出了基于能量平衡的故障检测方法。该方法利用暖通空调系统能量的传递和变换过程，建立起跨多个系统的传感器数据关联关系，将空气处理环节、水处理环节以及配电系统的测量数据有效整合，充分利用全局性的冗余信息，进而能同时针对空调设备故障、传感器故障以及涉及配电等跨系统传播的故障进行检测。实例验证表明：该方法建模简单、计算简便、易于工程实现。
Abstract：The air conditioning equipment and sensors in heating, ventilation and air conditioning (HVAC) systems can fail which is one of the main causes of building energy waste and risks to the safe operation of the HVAC system. A fault detection method based on energy balances was developed based on an HVAC energy network model. Energy conservation is then used to detect faults. The method analyzes the energy transfers for the air flows, the waterflows and the measured data in the distribution system in a global correlation across multiple systems. The method can simultaneously detect air conditioning equipment failures, sensor failures, and cross-system failures involving the power distribution. An example shows that the method is simple and easy to implement.