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Improved Current Sensor for Water Diffusion Testing of Composite Insulators.

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Summary
This summary is machine-generated.

A new current sensor effectively locates defects in composite insulators by measuring currents in different sections. This improved sensor enhances diagnostic capabilities for composite insulator performance during water diffusion tests.

Keywords:
composite insulatorcurrent sensorelectrodeinterfacewater diffusion

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Area of Science:

  • Electrical Engineering
  • Materials Science

Background:

  • Composite insulators are crucial for electrical insulation.
  • Conventional current sensors struggle to pinpoint defects in composite insulators during performance testing.
  • Water diffusion tests are standard for evaluating insulator integrity.

Purpose of the Study:

  • To develop an improved current sensor for localized defect detection in composite insulators.
  • To enhance the diagnostic accuracy of composite insulator performance.
  • To overcome limitations of conventional sensors in defect localization.

Main Methods:

  • Designed a novel electrode structure for segmented current measurement in composite insulator samples.
  • Employed finite element analysis to study the impact of dielectric properties on current distribution.
  • Tested new and conventional sensors on pristine and aged composite insulator samples with varying interfaces.

Main Results:

  • The new sensor successfully measured currents in distinct sections of composite insulators.
  • Analysis of current and phase information enabled performance diagnosis of specific insulator parts.
  • Comparative tests demonstrated the superior defect-locating ability of the new electrode structure over traditional sensors.

Conclusions:

  • The proposed current sensor with a new electrode structure significantly improves defect localization in composite insulators.
  • This advancement offers more precise diagnostics for composite insulator performance, especially after operational stress.
  • The findings validate the effectiveness of the novel sensor design for identifying insulator weaknesses.