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Separation of Partial Discharges Sources and Noise Based on the Temporal and Spectral Response of the Signals
(2021-01-01)
The insulation systems of equipment, cables, and electrical machines subjected to high voltage are continuously exposed to multiple aging mechanisms of electrical, mechanical, thermal, and environmental type. Normally, a ...
Behavior of an Inductive Loop Sensor in the Measurement of Partial Discharge Pulses with Variations in Its Separation from the Primary Conductor
(Mdpi, 2018-07-01)
Ideally, an insulation system must be capable of electrically insulating the active components of a machine or device subjected to high voltages. However, due to the presence of polluting agents or imperfections inside or ...
A Comparison of Inductive Sensors in the Characterization of Partial Discharges and Electrical Noise Using the Chromatic Technique
(Mdpi, 2018-04-01)
Partial discharges (PDs) are one of the most important classes of ageing processes that occur within electrical insulation. PD detection is a standardized technique to qualify the state of the insulation in electric assets ...
Partial discharges location in transformer winding using wavelets and Kullback-Leibler divergence
(Elsevier Science Sa, 2016-07)
A new algorithm to partial discharges (PD) location in transformer windings by means of the discrete wavelets transform (DWT) and the Kullback-Leibler (KL) divergence is presented. When the insulation system of transformers ...
Partial Discharge Detection of Transformer Bushing Based on Acoustic Emission and Current Analysis
(2021-08-05)
Partial discharge (PD) detection is one of the most important parameters which can classify the insulation condition of the distribution and power transformers. Among several components, the transformer bushing is an ...
Separation techniques of partial discharges and electrical noise sources: A review of recent progress
(2020-01-01)
Partial discharge (PD) monitoring is one of the most used tools for diagnosing the condition of electrical equipment and machines that operate normally at high voltage levels. Ideally, PD identification can be easily done ...
Assessment of Macro Fiber Composite Sensors for Measurement of Acoustic Partial Discharge Signals in Power Transformers
(2017-09-15)
This paper presents a performance assessment of macro fiber composite (MFC) sensors for measuring acoustic emission (AE) signals from partial discharges (PD) in power transformers filled with mineral oil. MFC sensors are ...
Partial discharge location in power transformer windings using the wavelet Laplace function
(Elsevier Science Sa, 2014-06)
Insulation system conditions in power transformers can be evaluated by means of partial discharge (PD) analyses. In fact, PD analysis is used to detect premature damage in transformer insulation system to avoid catastrophic ...
Analysis of the partial discharge pulse propagation in the stator winding of a synchronous machine
(Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas., 2015-09-01)
In this paper, a study of the propagation of partial discharge pulses in the stator winding of a synchronous machine is presented. This study was performed by injecting artificial partial discharge pulses in the stator ...