Experimental Verification of a Time-Domain Load Identification Method for Single-Phase Circuits

TL;DR

This paper experimentally validates a time-domain method for identifying load parameters in single-phase circuits, demonstrating high accuracy and robustness in a smart grid laboratory setting.

Contribution

It provides the first experimental validation of a novel time-domain load identification method for single-phase circuits using real-time measurements.

Findings

High accuracy and robustness in parameter identification

Excellent agreement with theoretical expectations

Potential for improved smart grid monitoring and control

Abstract

This paper presents experimental validation of a time-domain load parameter determination method for single-phase circuits. The verification is performed in a state-of-the-art smart grid laboratory equipped with power hardware and real-time emulators. The proposed method enables the identification of circuit parameters using only instantaneous voltage and current measurements at the point of common coupling. The experimental setup includes a range of test cases covering linear and non-sinusoidal single-phase conditions. Voltage and current waveforms are acquired, preprocessed, and used to calculate the relevant circuit parameters. The experimental results demonstrate a high degree of accuracy and robustness, with minimal percentage errors across all test cases. The identified parameters show excellent agreement with the theoretical expectations, confirming the validity and applicability of the proposed method to identify the load of single-phase systems. This validation highlights the potential of the method for improved monitoring, control, and protection of smart grids, paving the way for future extensions to three-phase systems and real-time implementations.