Results 91 to 100 of about 7,327 (250)

Application of SCNGO-VMD-SVM in Identification of Gas Insulated Switchgear Partial Discharge

IEEE Access
Partial discharge (PD) is one of the main reasons of insulation deterioration in gas insulated switchgear (GIS). How to efficiently and accurately identify PD signals is an important guarantee for the stable operation of GIS.
Wei Sun, Hongzhong Ma, Sihan Wang
semanticscholar   +1 more source

Application of Sensors and Digitalization Based on IEC 61850 in Medium Voltage Networks and Switchgears [PDF]

, 2016
Vzduchem izolované vysokonapěťové rozváděče jsou nedílnou součástí energetického distribučního řetězce a to jak v průmyslovém, tak ve veřejném sektoru. Hlavní funkcí rozváděče je ochrana pracovního personálu, rozpojování/odpojování a spínání, izolování ...
Štefanka, Martin
core  

Partial Discharge Fault Detection of Substation GIS Based on CEEMDAN Fusion Processing Algorithm of Multi‐Frequency Signals

Engineering Reports, Volume 7, Issue 6, June 2025.
This article proposes a method for detecting partial discharge faults in substation GIS based on multi frequency signal CEEMDAN fusion processing algorithm. The main innovations are as follows: (1) Data acquisition and signal enhancement aspects. Segmented data collection: By analyzing the state structure of typical GIS partial discharge faults, the ...
Yuan Sun, Hao Xie, Li Chang
wiley   +1 more source

A novel meta‐learning network for partial discharge source localization in gas‐insulated switchgear via digital twin

IET Generation, Transmission & Distribution
Due to the requirement for highly precise synchronous sampling and the substantial reliance on time difference calculations, the current partial discharge (PD) localization based on the time difference of arrival is only applicable in certain situations.
Jing Yan, Yanxin Wang, Yang Zhou, Jianhua Wang, Yingsan Geng   +4 more
semanticscholar   +1 more source

Moisture monitoring technology for GIS using dual-cone microfibers

Zhejiang dianli
An increase in moisture content within GIS （gas insulated switchgear） can compromise its insulation integrity. To monitor insulation gas humidity inside GIS， a humidity sensor using dual-cone microfibers is developed.
SHAO Xianjun, CHEN Xiaoxin, JIANG Jiongting, WANG Yukun, JI Junting, DU Houxian, MA Guoming   +6 more
doaj   +1 more source

Separation of sources in radiofrequency measurements of partial discharges using time-power ratios maps [PDF]

, 2015
Partial discharges measurement is one of the most useful tools for condition monitoring of high-voltage (HV) equipment. These phenomena can be measured on-line with antennas provided that the signal to noise ratio is improved by reducing common ...
Albarracín Sánchez, Ricardo, Ardila Rey, Jorge Alfredo, Martínez Tarifa, Juan Manuel, Robles Muñoz, Guillermo   +3 more
core   +3 more sources

Recurrent Neural Network for Partial Discharge Diagnosis in Gas-Insulated Switchgear

Energies, 2018
The analysis of partial discharge (PD) signals has been identified as a standard diagnostic tool for monitoring the condition of different electrical apparatuses.
Minh-Tuan Nguyen, Viet-Hung Nguyen, Suk-Jun Yun, Yong-Hwa Kim   +3 more
doaj   +1 more source

Imaging time series for the classification of EMI discharge sources [PDF]

, 2018
In this work, we aim to classify a wider range of Electromagnetic Interference (EMI) discharge sources collected from new power plant sites across multiple assets. This engenders a more complex and challenging classification task.
Boreham, Philip, Hughes-Narborough, Michael, Mitiche, Imene, Morison, Gordon, Nesbitt, Alan, Stewart, Brian G.   +5 more
core   +2 more sources

The SF6 Decomposition Mechanism: Background and Significance [PDF]

, 2017
Gas Insulated Switchgear (GIS) has been widely used in substations. The insulating medium used in GIS is sulfur hexafluoride (SF6) gas. However, the internal insulation defect existed in GIS would inevitably lead to partial discharge (PD), and cause the ...
Tang, Ju, Xiao, Song, Zeng, Fuping, Zhang, Xiaoxing   +3 more
core   +1 more source

Shared Knowledge-Based Contrastive Federated Learning for Partial Discharge Diagnosis in Gas-Insulated Switchgear

IEEE Access
Recently, deep neural networks have shown remarkable success in fault diagnosis in power systems using partial discharges (PDs), thereby enhancing grid asset safety and reliability.
Vo-Nguyen Tuyet-Doan, Y. Youn, Hyun-Soo Choi, Yong-Hwa Kim   +3 more
semanticscholar   +1 more source