PQReplay

PQReplay is a web + desktop app for utilities, industrial plants, and PQ consultants who are tired of arguing about “what happened” after sags, swells, transients, and harmonics events. It ingests waveform/event files from common power-quality meters (COMTRADE where available, plus vendor exports), normalizes them, and builds a time-synced “incident replay” with voltage/current traces, RMS trends, harmonic spectra, and event annotations. The app generates a defensible incident report that maps symptoms to likely causes (upstream fault, capacitor switching, VFD interaction, loose neutral, etc.) and flags missing evidence. It’s not magic: it’s a structured workflow that reduces analysis time and makes findings auditable. Optional AI assists with classification and report drafting, but users can always see the underlying measurements and assumptions.