Results 81 to 90 of about 35,251 (193)

Research on Nonuniform Ageing State Assessment of Oil‐Immersed Power Transformers Based on PCA–GWO–RF Algorithm

High Voltage, EarlyView.
ABSTRACT The condition assessment of oil–paper insulation is critical for oil–immersed power transformers, which are fundamental to the reliability of modern power systems. The primary limitation of traditional transformer ageing assessment lies in its macroscopic, whole‐unit approach, which fails to account for the localised effects of nonuniform ...
Mingze Zhang, Muhe Yu, Wei Sun, Ji Liu, Song Cheng, Bingjie Wang, Di Shao, Minghe Chi   +7 more
wiley   +1 more source

Improved Consistent Interpretation Approach of Fault Type within Power Transformers Using Dissolved Gas Analysis and Gene Expression Programming

Energies, 2019
Dissolved gas analysis (DGA) of transformer oil is considered to be the utmost reliable condition monitoring technique currently used to detect incipient faults within power transformers.
Ahmed Abu-Siada
doaj   +1 more source

Howard DGA

, 2017
1/4 left side view of a Howard DGA, a civilian plane, on the ground.https://corescholar.libraries.wright.edu/special_ms344_photographs/1345/thumbnail ...

core   +1 more source

Diffusion of Characteristic Gases in Oil‐Immersed Transformer by Computational Fluid Dynamics Simulation and Experimental Verification

High Voltage, EarlyView.
ABSTRACT The complex diffusion of characteristic gases within oil‐immersed transformers significantly influences the timeliness between the fault occurrence and gas detection. So far, the gas transport processes and spatio‐temporal distributions remain inadequately understood.
Chunpeng Li, Yuan Li, Jianyi Wang, Zhengqin Zhou, Zhihao Liu, Zhiqiu Chen, Dongyang Zheng, Guanjun Zhang   +7 more
wiley   +1 more source

Influence of Dissolved Oxygen on the Gassing Tendency of Biodegradable Insulating Liquids Under Thermal and Electrical Faults

High Voltage, EarlyView.
ABSTRACT Dissolved gas analysis (DGA), widely used for fault diagnosis, can be significantly influenced by the presence of oxygen. Oxygen not only accelerates fluid degradation but also alters the type and concentration of fault gases generated, potentially leading to misinterpretation of transformer conditions if conventional DGA models are applied ...
Moïse Agouassi, U. Mohan Rao, Issouf Fofana, Yazid Hadjadj, Fethi Maghnefi   +4 more
wiley   +1 more source

State‐of‐the‐Art Artificial Intelligence for Condition Perception of Power Equipment: Applications and Trends

High Voltage, EarlyView.
ABSTRACT With the advancement of the ‘carbon peaking and carbon neutrality’ targets and the construction of new power systems, the operating environment of power equipment is becoming increasingly complex, rendering traditional operation and maintenance strategies insufficient to meet the demands of safe and stable grid operation.
Hui Song, Gehao Sheng, Zonglin Wang, Yuxiao Zhang, Lingen Luo, Xiuchen Jiang   +5 more
wiley   +1 more source

Howard DGA-3

, 2017
A right side view of a Howard DGA-3, a civilian plane, on the ground.https://corescholar.libraries.wright.edu/special_ms344_photographs/1346/thumbnail ...

core   +1 more source

Nghiên cứu ứng dụng trí tuệ nhân tạo chẩn đoán sự cố tiềm ẩn trong máy biến áp theo phương pháp phân tích khí hòa tan

Tạp chí Khoa học và Công nghệ
Phân tích khí hòa tan trong dầu cách điện là phương pháp phổ biến để theo dõi tình trạng máy biến áp (MBA) ngâm dầu. Các tổ chức tiêu chuẩn quốc tế và các nhà nghiên cứu đã phát triển nhiều phương pháp như: phương pháp tỷ lệ Doernenburg, tỷ lệ Roger, tỷ ...
Nguyễn Văn Ngà, Ngô Huy Chiến, Đào Trực, Trần Đình Thọ, Nguyễn Văn Lục, Trần Huy Vũ   +5 more
doaj  

Review of Insulation Ageing and Lifecycle Management for Oil‐Immersed Power Equipment: From Conventional Testing Analysis to Artificial Intelligence Method

High Voltage, EarlyView.
ABSTRACT Oil‐immersed power equipment is a critical component for energy transmission and secure operation of modern power grids. The ageing of oil–paper insulation under combined electrical, thermal and mechanical stresses directly affects equipment lifetime and system reliability. This paper presents a comprehensive review of the ageing behaviour and
Ruijin Liao, Jian Hao, Jing Xu, George Chen, Huanchao Cheng, Jiacong Li, Xize Dai   +6 more
wiley   +1 more source

D-glyceric aciduria due to GLYCTK mutation: Disease or non-disease?

Molecular Genetics and Metabolism Reports
D-glyceric aciduria (DGA) is caused by D-glycerate-2-kinase deficiency due to biallelic pathogenic variants in GLYCTK. It is associated with variable neurological symptoms.
Sandra D.K. Kingma, Laura K.M. Steinbusch, Sietse M. Aukema, Margje Sinnema, Bianca Panis, Joost Nicolai, Estela Rubio-Gozalbo   +6 more
doaj   +1 more source