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Accurate Detection and Analysis of Oscillatory Transients Using PQ Canvass and Seeker
This white paper demonstrates how oscillatory transients, often triggered by capacitor bank switching or lightning, can be effectively recorded and diagnosed using waveshape-triggered waveform capture with PMI's Seeker and analyzed in PQ Canvass. It details step-by-step methods for isolating, measuring, and verifying ring frequencies through waveform data and harmonic magnitude plots, enabling precise troubleshooting and mitigation of resonance effects on distribution circuits.
Key topics include:
- Oscillatory Transients
- Waveforms Data Collection
- Finding and Isolating Resonances in Waveform Data
- Estimating Ring Frequency
- Using the Harmonic Magnitude Plot
Why utilities should care:
Understanding and mitigating oscillatory transients reduces equipment stress, prevents misoperation, and improves power quality. Accurate diagnosis and frequency estimation support targeted filtering and circuit adjustments, enhancing reliability and operational efficiency.
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