Results 11 to 20 of about 898,479 (287)

Vehicles testing at low ambient temperatures

Vojnotehnički Glasnik, 1999
This paper presents the problem of vehicles usability at low ambient temperatures. Which problems in military vehicles and how to solve them is the purpose of this study.
Saviša Todorović , Slobodan Dželetović , Radisav Jugović   +2 more
doaj   +1 more source

Evaluation of the Inter-repair Operation Period of Electric Submersible Pump Units [PDF]

, 2020
In recent years, in the oil and gas industry of Azerbaijan, the use of electric submersible pumps (SEP) as one of the effective way to increase the level of production of well products. Currently, electric centrifugal pumping units (ECPU) are widely used
Abasova, S. M. (Sevinj), Habibov, I. A. (Ibrahim)   +1 more
core   +3 more sources

The method for increasing the efficiency of equipment’s maintenance in railway traction power supply systems [PDF]

Archives of Transport, 2018
Purpose. To develop the method for increasing the efficiency of the equipment’s maintenance and repair system, ensuring necessary level of operational reliability of the equipment, safety and reliability of the electric equipment with minimal expenses on
Oleksandr Matusevych, Valeriy Kuznetsov, Viktor SYCHENKO   +2 more
doaj   +1 more source

Ultracapacitors equipped hybrid electric MicroCar

IET Electric Power Applications, 2010
The main purpose of the study is to describe a small size hybrid vehicle having ultracapacitors (UCs) as on-board storage unit. The vehicle on-board main power supply is achieved by a genset being formed of a 250 cc internal combustion engine and a permanent magnet (PM) synchronous electric generator, whereas four 16 V-500 F UCs modules are connected ...
LIDOZZI, ALESSANDRO, Solero L, Di Napoli A.   +2 more
openaire   +3 more sources

A quantitative research on the level of disturbance to secondary signal ports of electronic voltage transformers under the operation of gas‐insulated switchgear

High Voltage, 2022
The collectors of electronic transformers has the problem of electromagnetic incompatibility under the operation of disconnecting switches, which limits their wide application in smart grids.
Qi Wang, Chao Fu, Fanwu Chu, Yue Tong, Xiaozhou Wang, Guoxiong Ye, Xiong Wu   +6 more
doaj   +1 more source

Development of technique for checking insulation distance for large-scale CAD data using voxel meshes

Mechanical Engineering Journal, 2018
Conventionally, designers of electronic equipment structures visually inspect the insulation distance or check it by using CAD software functions. However, unintentionally failed detection and overdetection of objects being inspected can cause problems ...
Takashi HAMAGUCHI, Makoto ONODERA, Takashi YOKOHARI   +2 more
doaj   +1 more source

Assessment of long thermal ageing on the oil-paper insulation [PDF]

, 2016
Electric power equipment has complex construction. Therefore, it is very important to have enough information about the state of equipment. High voltage transformers play a very important role in the electric power system. One of the most important parts
Kolcunová, Ira, Lisoň, Lukáš, Pavlík, Marek   +2 more
core   +2 more sources

Effect of Multiple Reclosing Time Intervals on Axial Vibration of Winding

Applied Sciences, 2023
When a transformer suffers a permanent fault, it will suffer a short-circuit impulse again after reclosing. If the previous vibration of the winding is not attenuated completely and the winding is subjected to a secondary impulse within a short time, the
Lu Sun, Shuguo Gao, Yuan Tian, Ruidong He, Fuyun Teng, Liang Wang, Jianghai Geng, Ping Wang, Xinyu Wang, Zikang Zhang, Jianhao Zhu, Jiaxin Yao, Yufei Yao   +12 more
doaj   +1 more source

VICARED: A Neural Network Based System for the Detection of Electrical Disturbances in Real Time [PDF]

, 2005
The study of the quality of electric power lines is usually known as Power Quality. Power quality problems are increasingly due to a proliferation of equipment that is sensitive and polluting at the same time.
Elena Ortega, José Manuel, León de Mora, Carlos, Monedero Goicoechea, Iñigo Luis, Montaño Asquerino, Juan-Carlos, Ropero Rodríguez, Jorge   +4 more
core   +1 more source

A Study on the Enhanced Extraction of Ultra-High-Frequency Signals Induced by Transformer Core Coupling

Energies
Partial discharge, as an important indicator of insulation degradation in transformers, is a crucial means of assessing the insulation performance of transformers.
Zhiqin Ma, Linglong Cai, Dan Zhou, Aihui Wen, Shuo Jiang, Chunyao Lin, Yuan Wang   +6 more
doaj   +1 more source