Table 4 Details of RBC-5wk fault scenarios.
From: Labeled Datasets for Air Handling Units Operating in Faulted and Fault-free States
Fault type | Fault intensity | Method of fault imposition |
|---|---|---|
Cooling coil valve stuck | 0%, 5%, 15% 65%, 100% | Defining the leakage ratio as: \(l=\frac{\kappa \upsilon (y=0)}{\kappa \upsilon (y=1)},\) where \(\kappa \upsilon (y=0)\) and \(\kappa \upsilon (y=1)\) are the flow coefficient at the fully closed and fully open positions, respectively. |
Outdoor air damper stuck | 0%, 5%, 15%, 45%, 55%, 65%, 100% | |
Supply duct leakage | 20%, 45%, 55% | Implementing the mathematical expression as: \({\dot{m}}_{{EF}}+{\dot{m}}_{L}=k\sqrt{\triangle p}\), where \({\dot{m}}_{{EF}}\) is the normal operation mass flow rate, \({\dot{m}}_{L}\) is the leakage mass flow rate, k is the friction factor, and \(\triangle p\) is the pressure drop. |
AHU supply air temperature sensor bias | +2 °K, −2 °K | Overwriting the output (sensed variable) of the original sensor model by the faulty value. |
Outdoor air flow rate sensor scale error | +30%, −30% | |
Chilled water differential pressure sensor bias | +10,000 Pa, −10,000 Pa |
