Results 21 to 30 of about 5,815,291 (292)

Pre-breakdown Characteristics of Contaminated Power Transformer Oil [PDF]

, 2007
In this paper we have studied pre-breakdown characteristics of transformer oil in the presence of different levels of contamination. The contaminant is fibrous dust from pressboard insulation used for high voltage transformers.
Zuber, H M, Chen, G
core   +2 more sources

Experimental dataset on the tensile and compressive mechanical properties of plain Kraft and crepe papers used as insulation in power transformers after ageing in mineral oil

Data in Brief, 2021
The solid insulation in the windings of power transformers, which generally consists of oil-impregnated thin paper, is one of the key elements for the performance and durability of these electrical machines.
Carmela Oria, Isidro Carrascal, Diego Ferreño, Inmaculada Fernández, Alfredo Ortiz   +4 more
doaj   +1 more source

INSULATION OPTIMIZATION OF POWER TRANSFORMER LEADS

Journal of Energy : Energija, 2017
Power transformers reliability, amongst other things, depends on its insulation system. High voltage leads are a part of the insulation system and should be properly insulated. This includes positioning an insulation barrier between the leads and a tank on a certain distance.
openaire   +5 more sources

Accurate Assessment of Moisture Content and Degree of Polymerization in Power Transformers via Dielectric Response Sensing

Sensors, 2023
Power transformers are essential apparatuses used to transfer electrical energy from one voltage-level circuit to another. For reliable systems, preventive maintenance of the transformers is required to ensure good services of all mechanical, electrical,
Anantawat Kunakorn, Sarawuth Pramualsingha, Peerawut Yutthagowith, Phethai Nimsanong, Supat Kittiratsatcha   +4 more
doaj   +1 more source

Heat transfer coefficient α of insulation liquid used in power transformers, based on measurements

ITM Web of Conferences, 2018
Proper work of the power transformer is determined by many factors. One of them is relatively low operating temperature of the transformer. Too high temperature has many negative consequences, such as fast aging process of the insulation system.
Goscinski Przemyslaw, Nadolny Zbigniew
doaj   +1 more source

Bridging in contaminated transformer oil under DC and AC electric field

, 2013
One of the key components in high voltage transmission and distribution systems are power transformers and their consistent operation is of utmost importance to energy utilities and users.
Wilson, G, Mahmud, S., Jarman, P, Golosnoy, I. O., Mahmud, S, Chen, G., Wilson, G., Golosnoy, I O, Chen, G, Jarman, P.   +9 more
core   +1 more source

Space charge behavior in multi-layer oil-paper insulation under different DC voltages and temperatures [PDF]

, 2010
Oil-paper as a reliable insulation system is widely used in power transformers and cables. The dielectric properties of oil-paper insulation play an important role in the reliable operation of power equipment. However, the formation and dynamics of space
Liao, Rujin, Fu, Mingli, Chao Tang, Rui-jin Liao, G. Chen, M. Fu, Tang, Chao, Chen, George   +7 more
core   +1 more source

Thermofluidic investigations of oil natural transformer: Closed‐loop modelling and experimental validation

High Voltage
Excessively high temperatures inside a power transformer can accelerate the ageing rate and even cause unplanned outages. Accurately estimating the hot‐spot temperature (HST) of a power transformer is important for regulating the load and ensuring long ...
Yuan Li, Yiran Gao, Chen Wang, Chao Zhu, Ying Li, Yuankai Wang, Guanjun Zhang   +6 more
doaj   +1 more source

Hydrogel platforms for 3D cardiac tissue engineering and fibrotic disease modelling

FEBS Open Bio, EarlyView.
Hydrogel‐based cardiac tissue models are advancing our understanding of heart health and disease. By incorporating electrical conductivity, aligned structures, and tunable mechanical properties, these platforms better replicate the complex environment of native heart tissue.
Harrison Porritt, Annika Winbo, Jenny Malmström   +2 more
wiley   +1 more source

Monitoring and diagnostics of power transformer insulation

Thermal Science, 2006
Liberalization of the energy market drives utilities to a more cost-effective power system. Power transformers are the most complex, important, and critical components of the transition and distribution power systems. Insulation system is the key component of life extension, better availability and higher reliability of a transformer.
Dragan Kovacevic, Slobodan Skundric, Jelena Lukic   +2 more
openaire   +1 more source