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TDEC
Power Transient Signal Measurement

Power Transient Signal Measurement

Highlights

Microsecond-to-nanosecond waveform capture for insulation diagnostics and power quality

For substation switching/lightning overvoltages, high-speed-rail transients, partial discharge pulses and power-quality disturbances. Wideband RC dividers, UHF antennas and high-frequency Rogowski coils combined with ≥10 MS/s synchronous acquisition capture transient waveforms from microseconds down to nanoseconds, enabling overvoltage front, PD spectrum and harmonic/flicker/sag analysis.

HDAQ SeriesPVIB2.0 Bus SeriesiMS View
  • Extremely wide frequency span: from power frequency to lightning and nanosecond partial-discharge pulses spans more than ten orders of magnitude — no single band can cover it all.

  • High-potential, strong-EMI environment: substations and high-speed-rail traction networks carry hundreds of kilovolts and strong electromagnetic fields, demanding strict insulation, shielding and isolation.

  • Sporadic, non-repeatable transients: switching overvoltages, lightning overvoltages and partial discharges are occasional events, requiring long-term monitoring and reliable triggering to capture.

  • Multi-point time traceability: waveforms from different points must be aligned on a µs-level time base to invert propagation paths and locate faults.

System architecture

Power transient signal measurement system architecture: a wideband RC divider (switching/lightning overvoltage), UHF antenna (partial discharge pulses) and HF Rogowski coil (transient current/power quality) pass through an isolation attenuator into the PVIB2.0 Bus Series (centralized) and HDAQ Series (distributed), with data going to iMS View Virtual Instrument Software and the TopCloud 2.0 platform.

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