Results 31 to 40 of about 7,559,493 (146)

A practical study of the 66‐kV fault current limiter (FCL) system with rectifier

Electrical Engineering in Japan, 2005
AbstractA fault current limiter (FCL) is extensively expected to suppress fault current, particularly required for a trunk power system's heavily connected high‐voltage transmission lines, such as the 500‐kV‐class power system which constitutes the nucleus of the electric power system.
Noriaki Tokuda, Yoshio Matsubara, Kyosuke Yuguchi, Takeshi Ohkuma, Natsuro Hobara, Yoshihisa Takahashi   +5 more
openaire   +2 more sources

Current-limiting characteristics of saturated iron-core fault current limiters in VSC-HVDC systems based on electromagnetic energy conversion mechanism

Journal of Modern Power Systems and Clean Energy, 2018
A common method to examine the current-limiting performance of saturated iron-core fault current limiter (SI-FCL) in high-voltage direct-current transmission based on voltage source converter (VSC-HVDC) systems is to solve differential equations based on
Botong LI, Hanqing CUI, Fangjie JING, Bin LI, Yichao LIU   +4 more
doaj   +1 more source

DC Current Limiting Characteristics of Flux-Coupled Type SFCL Using Superconducting Element Connected in Parallel in a DC System

Energies, 2021
In this paper, the fault current limiting (FCL) characteristics of a flux-coupled type superconducting fault current limiter (SFCL) with parallel connection between two windings in a DC system were analyzed. The flux-coupled type SFCL was composed of two
Young-Pil Kim, Seok-Cheol Ko
doaj   +1 more source

A current‐limiting DC circuit breaker with power flow control capability

IET Generation, Transmission & Distribution, 2022
Power flow controller (PFC), fault current limiter (FCL) and DC circuit breaker (DCCB) are important equipment in the DC grid. There are a large number of power electronic components in these equipment, resulting in high cost.
Shimin Xue, Xiao Chen, Baibing Liu, Wenjie Chen, Botong Li, Bin Li   +5 more
doaj   +1 more source

Protection System for LVDC Distribution Networks Using a Fault Current-Limiting Converter and Protection Zones

IEEE Access, 2023
In this study, we propose a generalized protection system for low-voltage DC (LVDC) distribution networks based on fault current-limiting (FCL) and the concept of protection zones (PZs).
Jin-Su Kim, Eun-Chul Lee, Sang-Yun Yun
doaj   +1 more source

Reduction Effect of Semiconductor Type Fault Current Limiter on Interrupting Duty of a Circuit Breaker [PDF]

, 2002
Calculations were carried out to study the effect of a semiconductor type of fault current limiter (FCL) upon the interrupting duty imposed on a circuit breaker when a fault occurs at a distance of 1 to 8 km downstream from the load side terminals of the
Calixte, Evenson, Matsumura, Toshiro, Shimizu, Hirotaka, Fujita, Hideki, Yokomizu, Yasunobu   +4 more
core   +1 more source

An effective fault management scheme and comprehensive double line‐frequency ripple propagation analysis for MVDC networks

IET Generation, Transmission & Distribution, 2021
This paper proposes an effective fault management scheme for medium‐voltage direct current (MVDC) networks, which includes a virtual‐impedance‐based fault current limiter (VI‐FCL) on the DC side and a positive‐negative‐sequence (PNS) control scheme on ...
Dongsen Sun, Xiaonan Lu, Liang Du, Fei Lu   +3 more
doaj   +1 more source

A voltage-clamped bidirectional fault current limiter based on a three-winding coupled inductor for DC power grids

International Journal of Electrical Power & Energy Systems
The DC fault is a serious challenge to voltage-source-converter-based HVDC (VSC-HVDC) systems, and the fault current limiter (FCL) is one of the key measures to solve the DC fault and reduce the capacity of the DC circuit breaker.
Ziao Yuan, Siyuan Liu, Jinchao Chen, Zhiyuan Liu, Yingsan Geng   +4 more
doaj   +1 more source

Improved Low Voltage Ride-Through Capability of DFIG with ESO Controller under Unbalanced Network Conditions

Majlesi Journal of Electrical Engineering
Under unbalanced grid condition, in a Doubly-Fed Induction Generator (DFIG), voltage, current, and flux of the stator become asymmetric. Therefore, active-reactive power and torque will be oscillating.
Ali Akbar Vali, Seyed Mohammad Hassan Hosseni, Javad Olamaei   +2 more
doaj   +1 more source

Diabetic Retinopathy Classification With Convolutional Neural Networks Designed by the Fuzzy Grey Wolf Optimizer With Parameter Adaptation

AI &Innovation, EarlyView.
ABSTRACT The detection and classification of diseases have become a field of interest for artificial intelligence in recent years, where the development of methods and models that allow support for specialists in different health fields has allowed early detection of diseases and the provision of timely treatment to patients.
Rodrigo Cordero‐Martínez, Daniela Sánchez, Patricia Melin   +2 more
wiley   +1 more source