Results 71 to 80 of about 11,878 (206)

A novel concept of fault current limiter based on saturable core in high voltage DC transmission system

AIP Advances, 2018
To develop mechanical circuit breaker in high voltage direct current (HVDC) system, a fault current limiter is required. Traditional method to limit DC fault current is to use superconducting technology or power electronic devices, which is quite ...
Jiaxin Yuan, Hang Zhou, Pengcheng Gan, Yongheng Zhong, Yanhui Gao, Kazuhiro Muramatsu, Zhiye Du, Baichao Chen   +7 more
doaj   +1 more source

Hybrid HVDC circuit breaker with self-powered gate drives [PDF]

, 2016
The ever increasing electric power demand and the advent of renewable energy sources have revived the interest in high-voltage direct current (HVDC) multi-terminal networks.
Alan J. Watson, Bergstrom L., Billon V., C. Mark Johnson, Chao Ji, Colin Davidson, DLR, German Aerospace Center, Institute of Technical Thermodynamics, Section Systems Analysis and Technology Assessment, Emmanuel Amankwah, Flurscheim C.H., Francis B. Effah, Greenwood A., Greenwood A., Jon Clare, Rieder W., Rieder W., Rieder W., Twenties Project Deliverable 11.3   +16 more
core   +2 more sources

Research of simulation and experiment on arc characteristics of gas mechanical switch

High Voltage
An arc is the high‐temperature discharge plasma produced in the opening process of mechanical switches, which directly affects the breaking capability of a hybrid DC circuit breaker.
Cheng Jiang, Lu Qu, Zhangqing Yu, Zhizheng Gan, Xin yan, Rong Zeng, Yulong Huang, Shaofu Li   +7 more
doaj   +1 more source

Valve-Side Single-Phase-to-Ground Fault Clearance in Bipolar Hybrid-MMC HVDC Systems Utilizing Thyristor Commutation Branches and Mechanical Interrupter

IEEE Access
The Hybrid Modular Multilevel Converter (HMMC) topology—comprising full-bridge (FB) and half-bridge (HB) submodules—is effective for DC fault clearance in HVDC systems.
Muhammad Usman, Il Kwon, Bang-Wook Lee
doaj   +1 more source

A novel thyristor‐based hybrid DC circuit breaker with short arcing capability

High Voltage
Multi‐terminal flexible high‐voltage direct current (HVDC) transmission and DC grid technology are developing rapidly. The hybrid DC circuit breaker (HCB) has broad application prospects in the field of HVDC transmission and DC power grid.
Guanlong Jia, Yuchen Yuan, Hongjiang Guo, Xiaoxue Wang, Feng Niu   +4 more
doaj   +1 more source

Energy Extraction in the CERN Large Hadron Collider: a Project Overview [PDF]

, 2001
In case of a resistive transition (quench), fast and reliable extraction of the magnetic energy, stored in the superconducting coils of the electromagnets of a particle collider, represents an important part of its magnet protection system.
Dahlerup-Petersen, K, Erokhin, A, Kazmine, B, Medvedko, A S, Sytchev, V V, Vasilev, L B   +5 more
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Multi-kw dc power distribution system study program [PDF]

The first phase of the Multi-kw dc Power Distribution Technology Program is reported and involves the test and evaluation of a technology breadboard in a specifically designed test facility according to design concepts developed in a previous study on ...
Berkery, E. A., Krausz, A.
core   +1 more source

Modernisation of a traction system for metro vehicles [PDF]

, 2017
Thanks to the arrival of the new metro MPL16 and the obsolescence of the MPL75 traction chain, it was necessary to consider a switch between the current MPL75 traction chain and the new generation of the MPL16 traction chain (asynchronous motor).
Simond Kenzo
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Space station common module network topology and hardware development [PDF]

Conceptual space station common module power management and distribution (SSM/PMAD) network layouts and detailed network evaluations were developed. Individual pieces of hardware to be developed for the SSM/PMAD test bed were identified.
Anderson, P., Braunagel, L., Chwirka, S., Eason, D., Fishman, M., Freeman, K., Landis, D., Lech, L., Martin, J., Mccorkle, J.   +9 more
core   +1 more source

Application of Advanced Early Warning Systems with Adaptive Protection [PDF]

, 2015
This project developed and field-tested two methods of Adaptive Protection systems utilizing synchrophasor data. One method detects conditions of system stress that can lead to unintended relay operation, and initiates a supervisory signal to modify ...
Ashrafi, Frank, Babski-Reeves, Kari, Blumstein, Carl, Centeno, Virgilio, Cibulka, Lloyd, King, Roger, Madani, Vahid, Thorp, James   +7 more
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