Results 11 to 20 of about 161,473 (191)

Partial Discharge Ultrasonic Detection Method and Frequency Characteristics at Oil-filled Cable Terminal

Zhejiang dianli, 2022
In order to effectively detect latent insulation faults at oil-filled cable terminals， the finite element analysis method of acoustic field is used to study the characteristics of partial discharge acoustic field distribution at oil-filled cable ...
DU Liang, GUO Wei, WENG Huiying, JIN Yating, WU Hao, ZHANG Weichao   +5 more
doaj   +1 more source

Modeling partial discharge phenomena

IEEE Electrical Insulation Magazine, 2020
Measurements of partial discharge (PD) activity are a commonly used technique to diagnose the health of insulation material within high voltage plant. The definition of PD is relatively broad, it is generally defined as a localized or confined discharge within an insulating medium [1]. Due to the high electric breakdown strength of insulation materials,
Callender, George, Lewin, Paul
openaire   +2 more sources

Comparative Study on the Switchgear Partial Discharge Characteristics Based on Transient Earth Voltage and Pulse Current Detection Methods

Zhongguo dianli, 2022
The transient earth voltage (TEV) method is studied in detection performance for switchgear partial discharge, and compared with the pulse current detection method.
Rongbin XIE, Chao YANG, Qiang SHEN, Shiyong LI, Yong LUO, Boning YU   +5 more
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Research of GIS partial discharge type evaluation based on convolutional neural network

AIP Advances, 2020
This paper presents a GIS (Gas Insulated Switchgear) partial discharge type evaluation based on the convolutional neural network. It is significant to study GIS partial discharge and effectively classify the types of GIS partial discharge.
Liuhuo Wang, Kang Hou, Lingqi Tan
doaj   +1 more source

Research on Optical Fiber Sensor Localization Based on the Partial Discharge Ultrasonic Characteristics in Long-Distance XLPE Cables

IEEE Access, 2020
To improve the safety and antielectromagnetic interference performance of partial discharge detection in high-voltage DC cables, partial discharge of cables is used as a criterion for characterizing insulation defects.
Zhiheng Liu, Xiuling Liu, Zhaoyan Zhang, Wenna Zhang, Jianquan Yao   +4 more
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Partial Discharge Detection by Edge Computing

IEEE Access, 2023
Edge computing is becoming a mainstream platform for practical applications of machine learning and in particular deep learning. Many systems capable of efficient execution of deep neural models in the context of edge computing are readily available or ...
Lukas Klein, Petr Zmij, Pavel Kromer
doaj   +1 more source

Radiometric Partial Discharge Detection: A Review

Energies, 2023
One of the most common failures or breakdowns that can occur in high-voltage (HV) equipment is due to partial discharges (PDs). This occurs as a result of inadequate insulation, aging, harsh environmental effects, or manufacturing flaws. PD detection and
Sinda Kaziz, Mohamed Hadj Said, Antonino Imburgia, Bilel Maamer, Denis Flandre, Pietro Romano, Fares Tounsi   +6 more
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A GIS Partial Discharge Defect Identification Method Based on YOLOv5

Applied Sciences, 2022
The correct identification of partial discharge types is of great significance to the stable operation of GIS. In order to improve the recognition accuracy and result of partial discharge, and to meet the requirements of real-time monitoring of GIS ...
Yao Lu, Zhibin Qiu, Caibo Liao, Zhibiao Zhou, Tonghongfei Li, Zijian Wu   +5 more
doaj   +1 more source

Characteristics of PD for Dry-type Air-core Reactor in Turn-to-turn Insulation under Step-voltage

Journal of Harbin University of Science and Technology, 2018
Turntoturn insulation breakdown is the final expression form of turntoturn insulation fault for the drytype aircore reactor, the partial discharge under over voltage is one of the main factors causing the turntoturn insulation damage. In order to
YAO Yuan-hang, WEI Xin-lao, YANG Sheng-sheng, GU Zhe-yi, NIE Hong-yan   +4 more
doaj   +1 more source

Current Density Distribution in the Metal Enclosure of GIS in the Presence of Partial Discharges [PDF]

SHS Web of Conferences
Reliable operation of GIS is an important guarantee for the safety and stability of the power system. Partial discharge detection is an effective means of detecting GIS faults in the partial discharge. When partial discharge occurs, the partial discharge
Xu Dai, Changyong Yin, Guanhua Li
doaj   +1 more source