Fault Induced Delayed Voltage Recovery (FIDVR) model validation

The purpose of this paper is to present the validation of the WECC's air conditioner motor model (LD1PAC) that can be used to properly replicate Fault Induced Delayed Voltage Recovery (FIDVR) events. WECC tested 27 Residential Air Conditioning (RAC) that served as foundation for developing, testing, and validating the LD1PAC. In addition to the RAC dynamic behavior, this model include various RAC's control mechanisms such as power contactor, motor windings thermal protection, and thermostat. The LD1PAC was extensively tested for mathematical stability where over 15 iteration and repairs were necessary to assure its stability. Later, the model was validated with the actual performance of the tested RAC. The voltage ramp provided a very close match with the actual dynamic performance of a RAC. This model was also validated with actual field FIDVR events captured by Phasor Measurement Units (PMUs). This information can be used by utilities and independent system operators (ISOs) to improve FIDVR events validation and design appropriate measures to stabilize the system during these events.