Results 41 to 50 of about 4,981,356 (146)

Analysis and interpretation of dissolved gases in transformer oil: A case study [PDF]

, 2012
Condition monitoring plays a vital role in any asset management plan. Dissolved gas analysis is a routine test carried out on power transformers to monitor their condition.
H. A. Fonseka, S. N. Hettiwatte, Fonseka, H.A., HA Fonseka (17984935), Hettiwatte, S.N., SN Hettiwatte (17961161)   +5 more
core   +1 more source

Superconducting transformers

, 2004
The paper provides an overview of power applications of High Temperature Superconductivity (HTS) with emphasis on superconducting transformers. Properties of available HTS materials are reviewed and modelling aspects briefly introduced.
Sykulski, Jan
core   +1 more source

A Review of Cybersecurity Challenges in Smart Power Transformers

IEEE Access
In the evolving landscape of critical infrastructure security, the increasing sophistication of cyber threats poses challenges, particularly to the power grid’s new technology infrastructure. Despite traditionally being considered passive elements,
Hossein Rahimpour, Joe Tusek, Ahmed S. Musleh, Boyu Liu, Alsharif Abuadbba, Toan Phung, Aruna Seneviratne   +6 more
doaj   +1 more source

Superconducting transformers

, 2013
The advent of high-temperature superconducting (HTS) materials has renewed interest in the possibilities for superconducting power apparatus offering real economic benefit, within power ratings typical of present system practice.
Sykulski, Jan K.
core   +1 more source

Modular High-Frequency High-Power Transformers for Offshore Wind Turbines

, 2021
Conventional line frequency transformers are commonly used for wind turbines to step up the low-level voltage of the generators to reduce the transmission losses.
Weichong Yao, Yao, W, Parveen, T, Seagar, A, Tania Parveen, Lu, J, Andrew Seagar, Junwei Lu   +7 more
core   +1 more source

Calculation of the economy of electric energy in industrial electrical supply systems

Известия высших учебных заведений: Проблемы энергетики, 2020
The article examines the main features of the layout of electrical equipment for shop networks of internal power supply with the definition of indicators for a group of shop customers connected to a single power center, affecting the choice of the ...
E. I. Gracheva, A. N. Gorlov, Z. M. Shakurova   +2 more
doaj   +1 more source

Vibro-acoustic techniques to diagnose power transformers

, 2004
This paper deals with new procedures based on vibroacoustic techniques to diagnose power MV/LV transformers. The normally operating machines can be monitored and checked from a remote, dedicated diagnostic center where information is received directly ...
Di Carlo, D, Muzi, F, Bartoletti, C, Fazio, G, Salvatori, F., Sacerdoti, G, FAZIO, GIUSEPPE, Salvatori, F, Desiderio, M   +8 more
core   +2 more sources

Diagnosis of DC Bias in Power Transformers Using Vibration Feature Extraction and a Pattern Recognition Method

Energies, 2018
DC bias is a great threat to the safe operation of power transformers. This paper deals with a new vibration-based technique to diagnose DC bias in power transformers.
Xiaowen Wu, Ling Li, Nianguang Zhou, Ling Lu, Sheng Hu, Hao Cao, Zhiqiang He   +6 more
doaj   +1 more source

Use of alternative fluids in very high-power transformers: experimental and numerical thermal studies [PDF]

, 2020
The very high-power transformer lifespan depends mainly on the temperature that cellulose insulation reaches during its operation. Traditionally, its cooling has been carried out using mineral oil as coolant. Nowadays, alternative ester-based liquids are
Altay, Ramazan, Santisteban Díaz, Agustín, Olmo Salas, Cristian, Delgado San Román, Fernando, Renedo Estébanez, Carlos J., Ortiz Fernández, Félix, Ortiz Fernández, Alfredo   +6 more
core   +1 more source

Improving the ageing rate of transformer fleet using imperialist competitive algorithm

IET Generation, Transmission & Distribution, 2020
Power transformers are vital to delivering energy in power grids and they bear considerable maintenance costs annually. One of the major issues for power transformers is the ageing of the insulation paper used in windings that affects the life of ...
Mohsen Hosseinkhanloo, Seyed Hadi Mousavi Motlagh, Ali Naderian Jahromi, Navid Taghizadeghan Kalantari   +3 more
doaj   +1 more source