Reproducibility data and code for Starting Delay and Prefault-Reference Contamination in Gradually Developing High-Resistance Ground Faults

This dataset and accompanying Python code support the study “Starting Delay and Prefault-Reference Contamination in Gradually Developing High-Resistance Ground Faults”. The package contains retained simulation waveforms for three cases: a healthy baseline, abrupt insertion of the final fault resistance, and continuously increasing ground-fault conductance. It provides case-specific processing settings, a data dictionary, model and processing documentation, independent expected results, and scripts for offline reproduction and plotting. The data cover the retained 0–1.2 s interval without resampling. Reproduction requires Python and NumPy, with Matplotlib for plotting, and does not require a PSCAD installation. The package does not contain the source PSCAD project or commercial relay source code. CSV replay is distinct from rebuilding the electromagnetic-transient model or validating a complete relay device. Funding: Smart Grid-National Science and Technology Major Project (2030), grant 2026ZD0809400.