Results 1 to 10 of about 47,876 (156)

Calculation of Hot Spot Temperature of Transformer Bushing Considering Current Fluctuation [PDF]

IEEE Access, 2019
The transformer bushing hot spot temperature (HST) seriously affects its performance and design. In this paper, a novel method for calculating the hot spot temperature of bushing is proposed, in which the principle of constant joule heat is adopted to ...
Zhifei Yang, Jiangjun Ruan, Daochun Huang, Zhiye Du, Liezheng Tang, Taotao Zhou   +5 more
doaj   +4 more sources

Transformer hot spot temperature estimation through adaptive neuro fuzzy inference system approach [PDF]

Heliyon
Transformer performance and efficiency can be enhanced by effectively address the properties of its insulation system. The power transformer insulation system weakens as a result of operational thermal stresses brought on by dynamic loading and shifting ...
Edwell T. Mharakurwa, Dorothy W. Gicheru
doaj   +4 more sources

Inversion Detection of Transformer Transient Hot Spot Temperature [PDF]

IEEE Access, 2021
This paper proposes an inversion method to estimate a 10 kV oil-immersed transformer transient hot spot temperature (HST). A set of transient feature quantities which can reflect the load change are proposed, those quantities as well as the real time ...
Jiangjun Ruan, Yongqing Deng, Yu Quan, Ruohan Gong   +3 more
doaj   +2 more sources

Inversion Method for Transformer Winding Hot Spot Temperature Based on Gated Recurrent Unit and Self-Attention and Temperature Lag [PDF]

Sensors
The hot spot temperature of transformer windings is an important indicator for measuring insulation performance, and its accurate inversion is crucial to ensure the timely and accurate fault prediction of transformers.
Yuefeng Hao, Zhanlong Zhang, Xueli Liu, Yu Yang, Jun Liu   +4 more
doaj   +2 more sources

Review of Studies on the Hot Spot Temperature of Oil-Immersed Transformers

Energies
Oil-immersed transformers are the core equipment of power systems for energy transfer. The thermal characteristic of a transformer immediately affects its operational reliability and service life.
Lin Lin, Chengdan Qiang, Hui Zhang, Qingguo Chen, Zhen An, Weijie Xu   +5 more
doaj   +3 more sources

A Study on the Hot Spot Temperature in 154kV Power Transformers

Journal of Electrical Engineering and Technology, 2012
The life of a power transformer is dependent on the life of the cellulose paper, which influenced by the hot spot temperature. Thus, the determination of the cellulose paper's life requires identifying the hot spot temperature of the transformer. Currently, however, the power transformer uses a heat run test is used in the factory test to measure top ...
Dong-Jin Kweon, Kyo-Sun Koo, Jung-Wook Woo, Joo-Sik Kwak   +3 more
exaly   +3 more sources

Using measured hot spot temperatures in the statistical hot spot model of shock initiation [PDF]

AIP Conference Proceedings, 2020
The Statistical Hot Spot (SHS) model of shock initiation and detonation of solid explosives was developed to quantitatively model reactive flows for mesoscale and continuum geometries in the ALE3D code using Arrhenius temperature based chemical kinetic rate laws.
Craig M. Tarver, Will P. Bassett
openaire   +1 more source

Hot spot temperature prediction model of transformer based on GP-NLMS

电力工程技术, 2022
An accurate estimation model of winding hot spot temperature is the key to assess the thermal state and insulation life of oil-immersed transformers. Based on the hot spot temperature and load current monitored by the substation,the genetic programming ...
ZHANG Jun, CHEN Xiao, ZHANG Wang, ZHU Delyu, CHEN Yinghua   +4 more
doaj   +1 more source

Numerical simulation and detection of dry-type air-core reactor temperature field based on laminar–turbulent model

AIP Advances, 2021
The hot-spot temperature of a dry-type air-core reactor is a crucial factor that determines the service life of the reactor. Although the environment elevation has a significant influence on the reactor’s heat dissipation performance and hot-spot ...
Chuan Li, Han Wang, Chuan Luo, Dacheng Zhang, Xiaorong Wan, Zhengang Zhao, Yingna Li   +6 more
doaj   +1 more source

Experimental investigation of hot spot factor for assessing hot spot temperature in transformers [PDF]

2016 International Conference on Condition Monitoring and Diagnosis (CMD), 2016
Ageing of paper insulation within oil immersed power transformers is the determining factor for the transformer expected life. A thermal diagram as shown in the IEC 60076-2:2011 standard specified a hot spot factor method to estimate the hot spot temperature based on heat run test data.
Daghrah, Muhammad, Wang, Zhongdong, Liu, Qiang; id_orcid 0000-0003-3424-4698, Walker, D., Krause, Ch, Wilson , G.   +5 more
openaire   +3 more sources