Partial discharge (PD) in the power transformer is one of the signs of an issue with the
insulation system. The prolonged presence of this phenomenon has the potential to lead to …

The researchers present a simple experimental activity to measure the sound intensity level
using an Android-based smartphone to prove the inverse square law and analyze the …

Accurate partial discharge (PD) measurement is critical to ensure the stable operation of
transformers. The ultrasonic method is a low-cost, safe, and reliable technology that is …

This paper reports the results of the analysis of measurements involving partial discharges
(PD) occurring in the air using a corona camera (UV camera). The measurements were …

The principal objective of this study is to improve the diagnostics of power transformers,
which are the key element of supplying electricity to consumers. On Load Tap Changer …

Partial discharge (PD) is one of the major causes of insulation accidents in oil-immersed
transformers, generating a large number of signals that represent the health status of the …

This paper presents the finite element method (FEM) simulation of the propagation,
measurement and evaluation of the time of arrival (TOA) of the acoustic wave created by a …

The main cause of insulation degradation is due to partial discharges (PDs) occurring inside
the transformer, and its detection and localization are the most effective, non-destructive …

Partial Discharges (PDs) are a significant factor in reducing the insulation life of traction
transformers. In recent years, the Acoustic Emission (AE) method has become the most …

This article presents the results of the analysis of energy distribution of optical radiation
emitted by electrical discharges in insulating liquids, such as synthetic ester, natural ester …