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Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...

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Related Experiment Video

Updated: May 16, 2026

Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
08:32

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Published on: January 29, 2013

SiPM-based optical sensing system for GIS partial discharge detection.

Shiman Lin1, Yusheng Chen1, Deyu Qu1

  • 1Guangzhou Power Supply Bureau, Guangdong Power Grid Co., Ltd., Guangzhou, China.

Plos One
|May 14, 2026
PubMed
Summary
This summary is machine-generated.

Silicon photomultiplier (SiPM) optical detection offers high sensitivity for partial discharge (PD) in gas insulated switchgear (GIS). This study developed an adapted SiPM system, achieving superior signal-to-noise ratio and detecting discharges below 18 pC.

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Physics

Background:

  • Silicon photomultiplier (SiPM) optical detection is gaining traction for its high sensitivity and electromagnetic interference resistance.
  • Current research on SiPM-based partial discharge (PD) detection primarily uses laboratory simulations, with limited investigation in actual gas insulated switchgear (GIS) equipment.
  • The wavelength-dependent photon detection efficiency (PDE) of SiPMs necessitates a theoretical basis for optimal sensor selection in PD detection.

Purpose of the Study:

  • To systematically investigate the emission spectral characteristics of SF6 gas discharge under varying conditions (intensity, pressure, temperature).
  • To develop a SiPM-based optical sensing system specifically adapted for GIS applications.
  • To evaluate the performance of the developed SiPM system for PD detection in a real 110 kV GIS platform.

Main Methods:

  • Established an experimental platform for GIS gas discharge analysis.
  • Investigated SF6 gas discharge emission spectra at different intensities, pressures, and temperatures.
  • Developed and implemented a SiPM-based optical sensing system on an actual 110 kV GIS.

Main Results:

  • The developed SiPM-based optical detection system demonstrated a signal-to-noise ratio approximately 5.8 dB higher than a high-frequency current transformer.
  • The minimum detectable discharge quantity achieved by the system was below 18 picocoulombs (pC).
  • Emission spectral characteristics of SF6 gas discharge were systematically analyzed under varied conditions.

Conclusions:

  • SiPM-based optical detection technology shows significant potential for effective PD detection in GIS.
  • The developed system offers improved performance compared to traditional methods like high-frequency current transformers.
  • Further research into SiPM selection based on spectral characteristics can optimize PD detection in GIS.