Design and Implementation of Four Stage 8TH Order Band Pass Filter and Low Noise Amplifier (LNA) for Acoustic Partial Discharge Measurements

Articles in Press

Document Type : Research paper

Authors

1 Department of Electrical and Computer Engineering, Qom University of Technology, Qom, Iran.

2 Department of Electrical and Computer Engineering, Qom University of Technology, Qom, Iran

Abstract

Partial discharge in the power systems equipment can cause the destruction of the insulation system and the occurrence of accidents. There are various methods to identify and measure partial discharge, one of which can be mentioned as the acoustic method. Commercial sensors in the market usually have a high price. For this issue, a low-cost piezoelectric sensor and a built-in low-noise preamplifier and filter for partial discharge measurements have been designed. In this article, the effect of the sensitivity and frequency response of the acoustic sensor on time and frequency domain measurements has been discussed. The performance of the proposed AE sensor has been investigated through simulation and experimental studies. The obtained results indicate that the proposed low-cost AE sensor has a good performance and is capable of PD monitoring within power transformers.

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Main Subjects

Journal of Operation and Automation in Power Engineering

Articles in Press, Accepted Manuscript
Available Online from 28 July 2025

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History

  • Receive Date: 21 February 2025
  • Revise Date: 26 May 2025
  • Accept Date: 04 June 2025
  • First Publish Date: 28 July 2025

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