Results 11 to 20 of about 3,816 (209)

Research progress of online monitoring techniques for dissolved gas analysis in insulating oil [PDF]

Frontiers in Chemistry
Dissolved gas analysis (DGA) in insulating oil can achieve early warning of local discharge, overheating or arc failure in transformers. It can also quantitatively evaluate the aging degree of insulating equipment, providing a basis for formulating ...
Hua Mao, Hua Mao, Fangqiang Wang, Fangqiang Wang, Jie Wang, Jie Wang, Zeyao Ma, Zeyao Ma, Yan Wang, Yan Wang, Rui Peng, Zhi Geng, Xinsheng Lan, Xinsheng Lan   +13 more
doaj   +2 more sources

Dissolved Gas Generation Characteristics of Dielectric Liquids Under Partial Discharges and Breakdown Sparks

High Voltage
With the growing interest in monitoring and diagnostic techniques for assessing transformer condition, dissolved gas analysis (DGA) stands out as a crucial diagnostic tool to detect electrical and thermal faults in liquid‐immersed transformers ...
Gechen Bian, Qiang Liu, Paul Jarman, Pascal Mavrommatis   +3 more
doaj   +2 more sources

Low-Power Chemiresistive Gas Sensors for Transformer Fault Diagnosis [PDF]

Molecules
Dissolved gas analysis (DGA) is considered to be the most convenient and effective approach for transformer fault diagnosis. Due to their excellent performance and development potential, chemiresistive gas sensors are anticipated to supersede the ...
Haixia Mei, Jingyi Peng, Dongdong Xu, Tao Wang   +3 more
doaj   +2 more sources

A novel approach for oil-based transformer fault identification in electrical secondary distribution networks [PDF]

Heliyon
Oil-immersed transformers are mostly installed equipment in electrical power networks. Thus, ensuring the reliability of these equipment is paramount. Fault identification is one of the measures taken to ensure the reliability.
Hadija Mbembati, Hussein Bakiri
doaj   +2 more sources

A Novel Fault Diagnosis Method for a Power Transformer Based on Multi-Scale Approximate Entropy and Optimized Convolutional Networks [PDF]

Entropy
Dissolved gas analysis (DGA) in transformer oil, which analyzes its gas content, is valuable for promptly detecting potential faults in oil-immersed transformers.
Haikun Shang, Zhidong Liu, Yanlei Wei, Shen Zhang   +3 more
doaj   +2 more sources

Comparative Performance Study of Dissolved Gas Analysis (DGA) Methods for Identification of Faults in Power Transformer

International Journal of Energy Research, 2023
El transformador de potencia es un componente esencial de la red eléctrica que se puede utilizar para aumentar y reducir el voltaje. El análisis de gases disueltos (AGD) es el método más fiable para la identificación de fallos incipientes en transformadores de potencia.
Abdul Wajid, Atiq Ur Rehman, Sheeraz Iqbal, Mukesh Pushkarna, Syed Mudassir Hussain, Hossam Kotb, Mohammed Alharbi   +6 more
openaire   +2 more sources

Canonical Correlation Between Partial Discharges and Gas Formation in Transformer Oil Paper Insulation

Energies, 2012
Dissolved gas analysis (DGA) has been widely applied to diagnose internal faults in transformer insulation systems. However, the accuracy of DGA technique is limited because of the lack of positive correlation of the fault-identifying gases with faults ...
Jian Li, Shangyi Peng, Xi Chen, Weigen Chen   +3 more
doaj   +1 more source

A Multinomial DGA Classifier for Incipient Fault Detection in Oil-Impregnated Power Transformers

Algorithms, 2021
This study investigates the use of machine-learning approaches to interpret Dissolved Gas Analysis (DGA) data to find incipient faults early in oil-impregnated transformers.
George Odongo, Richard Musabe, Damien Hanyurwimfura   +2 more
doaj   +1 more source

Online Dissolved Gas Analysis (DGA) Monitoring System

CoRR, 2019
Transformers are critical assets in power systems and transformer failures can cause asset damage, customer outages, and safety concerns. Dominion Energy has a sophisticated monitoring process for the transformers. One of the most cost-efficient, convenient and practical transformer monitoring methods in industry is Dissolved Gas Analysis(DGA ...
Xianda Deng, Kyle Thomas, Huiying Huang, Scott P. Adams, Hesen Liu   +4 more
openaire   +2 more sources

On-line transformer condition monitoring through diagnostics and anomaly detection [PDF]

, 2009
This paper describes the end-to-end components of an on-line system for diagnostics and anomaly detection. The system provides condition monitoring capabilities for two in- service transmission transformers in the UK.
Catterson, V.M., McArthur, S.D.J., Moss, G., Rudd, S.E.   +3 more
core   +1 more source