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The Non-contact Signal Measurement and Compensation Method Based on Improved Non-Negative Tikhonov Regularization within the Bayesian Framework

  • Yuyang He*
  • , Lixin Wang
  • , Kaixing Chang
  • , Shaocong Li
  • *Corresponding author for this work
  • School of Robotics and Advanced Manufacture, Harbin Institute of Technology Shenzhen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Cross-linked polyethylene (XLPE) power cables are widely used in urban power grid construction. Due to the typically harsh operating environments, the cables are susceptible to moisture intrusion and mechanical stress. Therefore, improving the effectiveness and reliability of local defect detection and localization methods for cables is of greater practical significance. Stepped Frequency Waveform Reflectometry (SFWR) technology can be applied to various measurement and diagnostic scenarios, including online fault detection of cables. The working power of XLPE power cables is much greater than the rated power of the signal generator and oscilloscope of the detection equipment, so voltage conversion probes need to be introduced during online testing. Distortion caused by the signal passing through the probe can lead to inaccurate localization results. To address this, this paper proposes an improved signal compensation method based on the Bayesian inference-based Non-Negative Tikhonov Regularization method to compensate for the signal attenuation passing through the probe during online detection.

Original languageEnglish
Title of host publication2025 Global Reliability and Prognostics and Health Management Conference, PHM-Xian 2025
EditorsHuimin Wang, Steven Li
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331526757
DOIs
StatePublished - 2025
Externally publishedYes
Event16th IEEE Reliability and Prognostics and Health Management Conference, PHM-Xian 2025 - Xian, China
Duration: 10 Oct 202512 Oct 2025

Publication series

Name2025 Global Reliability and Prognostics and Health Management Conference, PHM-Xian 2025

Conference

Conference16th IEEE Reliability and Prognostics and Health Management Conference, PHM-Xian 2025
Country/TerritoryChina
CityXian
Period10/10/2512/10/25

Keywords

  • cable fault detection
  • online detection
  • probe
  • SFWR
  • signal distortion
  • the Non-negative Tikhonov Regularization Method with Bayesian

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