Results 31 to 40 of about 1,071 (155)

Comparison of a Self-Limiting Transformer and a Transformer Type FCL with HTS Elements [PDF]

open access: yes, 2006
A superconducting fault current limiter of the transformer type (inductive FCL) based on magnetic coupling between a superconducting element and a protected circuit has been investigated by many authors for various parameters and performances of a ...
Meerovich, Victor   +2 more
core   +1 more source

An Adaptive Overcurrent Coordination Scheme to Improve Relay Sensitivity and Overcome Drawbacks due to Distributed Generation in Smart Grids [PDF]

open access: yes, 2017
Distributed Generation (DG) brought new challenges for protection engineers since standard relay settings of traditional system may no longer function properly under increasing presence of DG.
Conde, Arturo   +3 more
core   +1 more source

Fault ride-through enhancement of fixed speed wind turbine using bridge-type fault current limiter

open access: yesJournal of Electrical Systems and Information Technology, 2016
The interaction between wind energy turbines and the grid results in two main problems, increasing the short-circuit level and reducing the Fault Ride-Through (FRT) capability during faults.
Mostafa I. Marei   +2 more
doaj   +1 more source

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

open access: yesIET 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   +5 more
doaj   +1 more source

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

open access: yesIEEE 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

Design and modelling of permanent magnet fault current limiter For electrical power applications [PDF]

open access: yes, 2018
As the electrical power grids are extending in capacity with connection of distributed generations, the fault current level is increasing and approaching the capacity limits of the circuit breakers.
Al-Naemi, Faris   +3 more
core   +1 more source

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

open access: yesIET 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   +3 more
doaj   +1 more source

Fundamental performance of flux-lock type fault current limiter with two air-core coils [PDF]

open access: yes, 2003
This paper proposes a superconducting fault current limiter (FCL) which is a modified version of the flux-lock type fault current limiter developed by us. This FCL consists of a high Tc superconductor (HTS) and two coaxial air-core coils.
13100   +9 more
core   +1 more source

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

open access: yesInternational 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   +4 more
doaj   +1 more source

Application of magnesium diboride in saturated core fault current limiters [PDF]

open access: yes, 2021
A fault current limiter (FCL) is a nonlinear device with negligible impedance under normal conditions, which is able to switch to a high impedance state as soon as the current passing through it exceeds a given threshold. Among the various FCL topologies,
Bruzek, Christian-Eric, Klaus, David
core   +1 more source

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