Results 1 to 10 of about 210,039 (304)

A Novel Fault Location Method for a Cross-Bonded HV Cable System Based on Sheath Current Monitoring [PDF]

Sensors, 2018
In order to improve the practice in the operation and maintenance of high voltage (HV) cables, this paper proposes a fault location method based on the monitoring of cable sheath currents for use in cross-bonded HV cable systems.
Mingzhen Li, Chengke Zhou, Wenjun Zhou, Chunlin Wang, Leiming Yao, Mengting Su, Xiaojun Huang   +6 more
doaj   +3 more sources

Analysis of the Operation of Cascade Current Transformers for Measurements of Short-Circuit Currents with a Non-Periodic Component with a Large Time Constant of Its Decay

Energies, 2022
Simulations of emergency states and tests of resistance of electrical devices to emergencies are performed in specialized high-power laboratories, the so-called short-circuit laboratories. For most electrical power devices, such measurements are required
Elzbieta Lesniewska, Jan Olak
doaj   +1 more source

Development of Bus and Line Control Method for Short-Circuit Current Reduction Using Genetic Programming

Energies, 2022
In this study, genetic programming (GP) is used for optimizing bus and line separation methods to reduce the short-circuit current. Expanding power systems led to intensive electric power and more transmission lines, reducing the grid impedance.
Dabin Son, Sangwook Han
doaj   +1 more source

The Analysis of the Symmetrical Short-Circuit Currents in Backup Power Supply Systems with Low-Power Synchronous Generators

Energies, 2020
This paper presents an analysis of the short-circuit currents of a synchronous generator with a rated power of 16 kVA. For this purpose, the authors carried out measurements of real short-circuit currents during laboratory tests.
Dominik Mamcarz, Paweł Albrechtowicz, Natalia Radwan-Pragłowska, Bartosz Rozegnał   +3 more
doaj   +1 more source

Methods of Current Limitation in Low Voltage (up to 1 kV) Electric Networks

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2021
The article discusses and systematizes the causes of high values of short-circuit currents in electrical networks up to 1 kV and indicates their negative consequences.
A. Yu. Kapustsinski, S. V. Kanstantsinava   +1 more
doaj   +1 more source

Short-Circuit Fault Analysis of the Sen Transformer Using Phase Coordinate Model

Energies, 2021
The Sen Transformer (ST) provides an economical solution for power flow control and voltage regulation. However, fault analysis and evaluation of the performance of the transmission protection system in the presence of a ST have not been investigated ...
Liang Bu, Song Han, Jinling Feng
doaj   +1 more source

Experimental study on short-circuit current characteristics of a photovoltaic system with low voltage ride through capability under a symmetrical fault

Energy Reports, 2022
Large number of photovoltaic (PV) power plants connected to a power grid can bring significant impacts to fault currents and the operation of protection systems.
Shuai Yuan, Bao-Feng Yang, Jian-Ying Zhang   +2 more
doaj   +1 more source

Critical Current Degradation in HTS Tapes for Superconducting Fault Current Limiter under Repeated Overcurrent

Applied Sciences, 2023
Superconducting fault current limiters (SFCL) can be an alternative to conventional devices limiting short-circuit currents in power systems. SFCL use high-temperature superconducting tapes of the second generation (HTS 2G) in SFCL, which, after reaching
Sylwia Hajdasz, Adam Kempski, Krzysztof Solak, Maciej Marc, Jacek Rusinski, Pawel Szczesniak   +5 more
doaj   +1 more source

Impact of Inter-Turn Short Circuit in Excitation Windings on Magnetic Field and Stator Current of Synchronous Condenser under Unbalanced Voltage

Energies, 2023
Inter-turn short circuit in the excitation windings of synchronous condensers is a common fault that directly impacts their normal operation. However, current fault analysis and diagnosis of synchronous condensers primarily rely on voltage-balanced ...
Junqing Li, Chengzhi Zhang, Yuling He, Xiaodong Hu, Jiya Geng, Yapeng Ma   +5 more
doaj   +1 more source

Analytical Optimal Currents for Multiphase PMSMs Under Fault Conditions and Saturation [PDF]

, 2014
An original analytical expression is presented in this paper to obtain optimal currents minimizing the copper losses of a multi-phase Permanent Magnet Synchronous Motor (PMSM) under fault conditions.
FLIELLER, Damien, KESTELYN, Xavier, NGUYEN, Ngac Ky, SEMAIL, Eric   +3 more
core   +5 more sources