Results 31 to 40 of about 10,554 (149)

Extraction and Evolution Analysis of Partial Discharge Characteristic Parameters in Moisture-Affected and Aged Oil–Paper Insulation

Applied Sciences
Oil–paper insulation in oil-immersed transformers undergoes a concealed degradation process that is difficult to detect during operation. To understand its discharge behavior, this study examines partial discharge characteristics under controlled ...
Ruiming Wang, Fubao Jin, Shangang Ma, Debao Wang, Caixiong Fan   +4 more
doaj   +1 more source

The Denoising Method for Transformer Partial Discharge Based on the Whale VMD Algorithm Combined with Adaptive Filtering and Wavelet Thresholding

Sensors, 2023
Partial discharge (PD) is the primary factor causing insulation degradation in transformers. However, the collected signals of partial discharge are often contaminated with significant noise.
Zhongdong Wu, Zhuo Zhang, Li Zheng, Tianfeng Yan, Chunyang Tang   +4 more
doaj   +1 more source

Inductive Sensor Performance in Partial Discharges and Noise Separation by Means of Spectral Power Ratios

Sensors, 2014
Partial discharge (PD) detection is a standardized technique to qualify electrical insulation in machines and power cables. Several techniques that analyze the waveform of the pulses have been proposed to discriminate noise from PD activity.
Jorge Alfredo Ardila-Rey, Mónica Victoria Rojas-Moreno, Juan Manuel Martínez-Tarifa, Guillermo Robles   +3 more
doaj   +1 more source

Research of Partial Discharge Monitoring for Switchgear Cabinet Based on LSSVM

MATEC Web of Conferences, 2016
Now, there are many influencing factors of partial discharge(PD) for switchgear cabinet, but very few methods used for switchgear cabinet monitoring. In this paper, Partial discharge of switchgear cabinet is identified based on Least Square SVM (LSSVM ...
Han Shai Gen, Guan Shi Lei, Wu Yan, Bo Zhi Xin, Ding Yan, Chen Li An   +5 more
doaj   +1 more source

Time Evolution of Partial Discharges in a Dielectric Subjected to the DC Periodic Voltage

Energies, 2022
Partial discharge (PD) detection can be considered one of the most useful tools for assessing the insulation conditions of the power apparatus in high-voltage systems.
Antonino Imburgia, Giuseppe Rizzo, Pietro Romano, Guido Ala, Roberto Candela   +4 more
doaj   +1 more source

Antena Kupu - Kupu Sebagai Sensor Ultra High Frequency (UHF) Untuk Mendeteksi Partial Discharge Pada Gas Insulation Substation

Jurnal Nasional Teknik Elektro, 2013
The use of antennas as receiving electromagnetic waves can be used as a tool for the detection of partial discharge (PD) that occurs in high voltage equipment. Especially in the insulation gas substation (GIS), the characteristics of the electromagnetic
Hanalde Andre, Umar Khayam
doaj   +1 more source

Anomaly Detection, Trend Evolution, and Feature Extraction in Partial Discharge Patterns

Energies, 2021
In the resilient and reliable electrical power system, the condition of high voltage insulation plays a crucial role. In the field of high voltage insulation integrity, the partial discharge (PD) inception and development trends are essential for ...
Marek Florkowski
doaj   +1 more source

Partial Discharge Diagnosis With Siamese Fusion Network

IEEE Access, 2022
Partial discharge is a common fault type in the operation of power equipment. Recently, deep learning methods have shown great potential in partial discharge (PD) diagnosis.
Zhihong Huang, Wei Huang, Xianyong Xu, Jian Xiao   +3 more
doaj   +1 more source

Estimation of the Partial Discharge Inception Voltage of Electrical Asset Components at Variable Environmental Pressure: A Modelling Approach

Energies
Since partial discharges, PD, are a major accelerated degradation mechanism of organic electrical insulation systems, measuring partial discharge inception voltage, PDIV, of electrical asset components in aviation and aerospace is a fundamental tool to ...
Sukesh Babu Myneni, Gian Carlo Montanari
doaj   +1 more source

Acoustic emission partial discharge detection technique applied to fault diagnosis: Case studies of generator transformers [PDF]

Serbian Journal of Electrical Engineering, 2016
In power transformers, locating the partial discharge (PD) source is as important as identifying it. Acoustic Emission (AE) sensing offers a good solution for both PD detection and PD source location identification.
Shanker Tangella Bhavani, Nagamani Hebbale Narasimhaiah, Punekar Gururaj Sudhindra   +2 more
doaj   +1 more source