Results 41 to 50 of about 397 (158)

A hybrid h-bridge fault current limiter for HVDC grid protection [PDF]

, 2021
For half-bridge modular multilevel converter (MMC) based HVDC grids, the fast clearance of DC faults can be achieved by DC circuit breakers (DCCBs). The hybrid fault current limiter (FCL) can be used to assist DCCBs for faster interruption less capacity.
Zhao, Chengyong, Chengyong Zhao, Dongyi Wu, Gen Li, Wu, Dongyi, Xu, Jianzhong, Jun Yan, Yan, Jun, Li, Gen, Jianzhong Xu   +9 more
core   +1 more source

Transient simulation and analysis for saturated core high temperature superconducting fault current limiter [PDF]

, 2023
In this paper, the transient performance of a magnetic core fault current limiter (FCL) saturated by high temperature superconducting (HTS) DC bias winding is investigated by using 3-dimensional (3D) field-circuit coupled simulation.
Youguang, G, Zhengjian, C, Shuhong, W, Cuixia, Z, Jie, Q, Weizhi, G, Jian, GZ   +6 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 Self-Activated Fault Current Limiter for Distribution Network Protection [PDF]

, 2023
Rapid protection of modern electric networks using fault current limiters (FCLs) is often delayed and limited by the inherent controller, sensor, and power electronic unit delays.
Rouzbehi, K, Heidary, A, Mehrizi-Sani, A, Sood, VK   +3 more
core   +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

OVERCURRENT RELAY COORDINATION IN DISTRIBUTED GENERATION WITH FAULT CURRENT LIMITER [PDF]

, 2017
The distribution network has many advantages when it is connected to distributed generation (DG). Some problems in coordination of protection devices will occur in the presence of DG, due to change in short circuit level at different points.
Amit A. Chatte (5115593), Amit A. Chatte
core   +1 more source

Power system analysis of a resistive HTS fault current limiter [PDF]

, 2007
This paper investigates the performance of a prototype resistive fault current limiter (FCL) made using a high temperature superconductor (HTS). Its behavior under normal operation and short-circuit conditions in a 6 kV/1 kA power system is analyzed with
Liu, ZY, Guo, YG, Liu, Z, Zhu, JG, Jin, J, Zhu, J, Jin, JX, Guo, Y   +7 more
core   +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

Data‐Driven Bulldozer Blade Control for Autonomous Terrain Leveling

Advanced Robotics Research, EarlyView.
A simulation‐driven framework for autonomous bulldozer leveling is presented, combining high‐fidelity terramechanics simulation with a neural‐network‐based reduced‐order model. Gradient‐based optimization enables efficient, low‐level blade control that balances leveling quality and operation time.
Harry Zhang, Ganesh Arivoli, Huzaifa Unjhawala, Luning Bakke, Radu Serban, Dan Negrut   +5 more
wiley   +1 more source

Operational control and protection implications of fault current limitation in distribution networks [PDF]

, 2009
Rising short-circuit fault current levels is one of the problems associated with the increased presence of distributed generation (DG) in electrical networks.
Blair, S.M., Burt, Graeme M., Singh, N.K., Booth, C.D.   +3 more
core