Results 11 to 20 of about 6,553 (262)

A short circuit current evaluation method based on the branch fault current of the circuit breaker

open access: yesZhejiang dianli, 2023
With the rapid load growth and the increasing density of power grids, the overrun short-circuit current becomes increasingly aggravated. To accurately assess the short-circuit current level of the system is crucial to ensure the safe and stable operation
DONG Wei   +5 more
doaj   +1 more source

Research on a fault current limiter based on variable reactor

open access: yesZhejiang dianli, 2022
With the increase of the power load in power grid, the short circuit level continues to rise, and excessive short-circuit current will do great damage to power equipment and imperil power systems.
GU Yu   +3 more
doaj   +1 more source

Short circuit fault identification and diagnosis analysis of rotor winding for variable speed pumped storage unit

open access: yesEnergy Reports, 2022
Rotor winding short circuit is a frequent fault type of generator unit. Compared with the traditional fixed-speed unit using DC excitation, the three-phase AC excitation structure of the variable speed pumped storage unit is more complicated, and the ...
Qinghui Lu   +5 more
doaj   +1 more source

Symmetrical Loss of Excitation Fault Diagnosis in an Asynchronized High-Voltage Generator

open access: yesEnergies, 2018
As a new type of generator, an asynchronized high-voltage generator has the characteristics of an asynchronous generator and high voltage generator. The effect of the loss of an excitation fault for an asynchronized high-voltage generator and its fault ...
Yanling Lv   +4 more
doaj   +1 more source

Early slight inter-turn short circuit fault diagnosis of axial flux stator coreless permanent magnet motor based on phase difference [PDF]

open access: yesJournal of Hebei University of Science and Technology
Aiming at the problem of early inter-turn short circuit fault of axial flux stator coreless motor, a method for early inter-turn short circuit fault diagnosis and positioning of axial flux stator coreless motor based on the phase difference of zero ...
Xiaoguang WANG   +4 more
doaj   +1 more source

A Review of Short-Circuit Fault Analysis and Novel Fault Detection Methods

open access: yes, 2021
This paper proposes a comprehensive review of short circuit fault analysis. It presents the different definitions and classifications of faults. It then discusses both symmetrical and unsymmetrical faults in detail and provides the equations used to solve for the fault current during each of these faults.
Moayad Osman, Ibrahim O. Habiballah
openaire   +2 more sources

Fault Characteristic Analysis and a Novel Pilot Protection Scheme for Pole-to-Ground Fault in Flexible DC Distribution Network

open access: yesIEEE Access, 2023
Due to the pseudo-bipolar structure of the flexible DC distribution network, the short-circuit current caused by a pole-to-ground fault is weak. The fault characteristics, particularly the steady-state fault characteristics, are not prominent. Therefore,
Hao Qi   +6 more
doaj   +1 more source

The Cable Fault Diagnosis for XLPE Cable Based on 1DCNNs-BiLSTM Network

open access: yesJournal of Control Science and Engineering, 2023
Diagnosing the fault type accurately from a variety of faults is very essential to ensure a stable electricity supply when a short-circuit fault occurs.
Qianyu Wang   +4 more
doaj   +1 more source

An Analytical Short-Circuit Current Calculation Method for Full-Power Wind Turbines under Complete Fault Ride-Through Processes [PDF]

open access: yesDianli jianshe
Accurate calculation of short-circuit current throughout the fault ride-through process of wind turbines is a critical prerequisite for the analysis and control of modern power systems.
YUAN Shuai, XIAO Jiaan, TAO Jun, CUI Haohan, CHAO Pupu, LI Weixing, A Minfu, WANG Liqiang, ZHONG Ming
doaj   +1 more source

Characteristics of Short-Circuit Current in Distribution Network with Doubly-Fed Wind Power System

open access: yesShanghai Jiaotong Daxue xuebao, 2023
The doubly-fed induction generator (DFIG) is connected to the distribution network as a distributed power source, which turns a radial single power supply system into a dual power supply system and changes the topology of the distribution network. When a
XI Xinze, XING Chao, QIN Risheng, HE Tingyi, HE Peng, MENG Xian, CHENG Chunhui
doaj   +1 more source

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