The article presents in detail the construction of a low-cost, portable online PD monitoring
system based on the acoustic emission (AE) technique. A highly sensitive piezoelectric …

The acoustic emission (AE) technique is one of the unconventional methods of partial
discharges (PD) detection. It plays a particularly important role in oil-filled power …

The article presents a novel on-line partial discharge (PD) monitoring system for power
transformers, whose functioning is based on the simultaneous use of three unconventional …

Partial discharge (PD) is one of the major factors causing insulation damage of power
transformers. This paper describes the development of on-line partial discharge monitoring …

The detection and location of partial discharge (PD) is of great significance in evaluating the
insulation condition of power transformers. This paper presents an active dielectric window …

An acoustic emission method (AE) is widespread and often applied for partial discharge
(PD) diagnostics, mainly due to its ease of application as well as noninvasiveness and …

Recently developed monitoring-systems show the need as also the possibilities for online-
and offline-onsite-diagnostics. The limit in sensitivity for electrical pd-measurements …

Power transformers are crucial in an electric power system. Failures in transformers can
affect the quality and cause interruptions in the power supply. Partial discharges are a …

Acoustic waves produced by partial discharges inside in dielectric materials can be detected
using acoustic emission (AE) sensors. This detection can be analyzed in the time domain …

Condition monitoring of power transformers is a significant issue for electrical utilities.
Research has demonstrated the efficacy of employing ultra high frequency measurement of …