Abstract
This paper presents experimental validation of a time-domain load parameter determination method for single-phase circuits using a state-of-the-art smart grid laboratory equipped with power hardware and real-time emulators. The proposed method identifies circuit parameters using only instantaneous voltage and current measurements at the point of common coupling. Comprehensive test cases covering linear and non-sinusoidal single-phase conditions demonstrate high accuracy and robustness, with minimal percentage errors across all configurations. The identified parameters show excellent agreement with theoretical expectations, confirming the method's validity for single-phase system characterization. Results highlight the potential for improved monitoring, control, and protection of smart grids, paving the way for future extensions to three-phase systems and real-time implementations.