Results 61 to 70 of about 86,487 (250)

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

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

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

Effects of shorter phase-resolved partial discharge duration on PD classification accuracy

International Journal of Power Electronics and Drive Systems (IJPEDS), 2020
<span>Partial discharge (PD) pattern recognition is useful to diagnose insulation condition. PD measurement data is commonly represented in phase-resolved partial discharge (PRPD) format. PRPD is useful as it provides a visible pattern for different PD source and various features can be extracted for PD pattern recognition.
Xin, Chong Wan, Raymond, Wong Jee Keen, Illias, Hazlee Azil, Kin, Lai Weng, Haur, Yiauw Kah   +4 more
openaire   +4 more sources

Void Partial Discharge Simulation Under a Repetitive Frequency Square Wave with Different Overshoot Rates

Energies
Long-term partial discharge (PD) erosion is an important factor causing insulation failure. With the rapid development of power electronics and the widespread application of inverters, more insulation is subjected to repetitive frequency square wave ...
Ruizhou Guo, Tao Jin, Wei Wang, Ruifeng An, Pan Wu, Shuquan Yan, Lin Cong, Yinzhang Cheng, Zhipeng Lei   +8 more
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

Remote controlled partial discharge acquisition unit

, 2003
Online partial discharge (PD) analysis for underground high voltage cables has major advantages over the offline techniques. Online techniques usually involve PD data acquisition, storage and post-processing of the data.
Pearson, J.S., Siew, W.H., Foo, M.H., Soraghan, J.J.   +3 more
core  

Use of Machine Learning for Partial Discharge Discrimination

, 2009
Partial discharge (PD) measurements are an important tool for assessing the condition of power equipment. Different sources of PD have different effects on the insulation performance of power apparatus.
Hao, L, Swingler, S G, Lewin, P L
core  

Localization for Dual Partial Discharge Sources in Transformer Oil Using Pressure-Balanced Fiber-Optic Ultrasonic Sensor Array

Sensors
The power transformer is one of the most crucial pieces of high-voltage equipment in the power system, and its stable operation is crucial to the reliability of power transmission.
Feng Liu, Yansheng Shi, Shuainan Zhang, Wei Wang   +3 more
doaj   +1 more source

A cosine similarity-based method for improving the accuracy of GIS discharge spectrum recognition

Zhejiang dianli
The study of effective feature extraction and optimization algorithms is crucial for improving the accuracy of partial discharge （PD） detection in gas-insulated switchgear （GIS）. To enhance the precision and reliability of GIS partial discharge detection
CHEN Xiaoxin, ZHOU Tonghao, LIU Jiangming, DAI Pengfei, LIU Yanqi, LI Wendong, ZHANG Guanjun   +6 more
doaj   +1 more source