Results 101 to 110 of about 15,785 (223)

Static voltage sharing technology of multi-break mechanical switch for hybrid HVDC breaker

open access: yesThe Journal of Engineering, 2019
The hybrid high-voltage direct current (HVDC) breaker combines mechanical and power electronics switching that enables it to interrupt power flows within a few milliseconds.
Qiuyu Yang   +4 more
doaj   +1 more source

Unified reference controller for flexible primary control and inertia sharing in multi-terminal voltage source converter-HVDC grids [PDF]

open access: yes, 2016
Multi-terminal dc (MTDC) grids are expected to be built and experience rapid expansion in the near future as they have emerged as a competitive solution for transmitting offshore wind generation and overlaying their ac counterpart. The concept of inertia
Candela García, José Ignacio   +4 more
core   +2 more sources

HVDC-DNN-MFO: Classifying High-Voltage Direct Current Interference Events in Geomagnetic Field Observation Data Using Deep Neural Network and Moth-Flame Optimization Algorithm

open access: yesIEEE Access
Geomagnetic field observation data are valuable resources for seismic geomagnetic research. However, the construction of subways, light railroads, and high-voltage direct current transmission lines in recent years has seriously affected the output data ...
Weifeng Shan   +6 more
doaj   +1 more source

Resilient Wide-Area Damping Control Using GrHDP to Tolerate Communication Failures [PDF]

open access: yes, 2018
This paper proposes a goal representation heuristic dynamic programming (GrHDP)-based resilient wide-area damping controller (WADC) for voltage source converter high voltage direct current (VSC-HVDC) employing redundant wide-area signals as input signals
He, Haibo   +4 more
core   +1 more source

A Black Start Scheme Based on Modular Multilevel Control-High Voltage Direct Current

open access: yesEnergies, 2018
Modern society’s need for power and its dependence on power sources is increasing with its development. As a result the consequences of blackout accidents have become more serious. At present, only three sources can be regarded as black-start power
Zecheng Li, Guojun Tan
doaj   +1 more source

Development and implementation of a LabVIEW based SCADA system for a meshed multi-terminal VSC-HVDC grid scaled platform [PDF]

open access: yes, 2016
This project is oriented to the development of a Supervisory, Control and Data Acquisition (SCADA) software to control and supervise electrical variables from a scaled platform that represents a meshed HVDC grid employing National Instruments hardware ...
Mora Comas, Gisela
core  

Operation analysis of thyristor based front-to-front active-forced-commutated bridge DC transformer in LCC and VSC hybrid HVDC networks [PDF]

open access: yes, 2017
The active-forced-commutated (AFC) bridge employs a symmetrical thyristor-bridge with auxiliary self-commutated full-bridge chain-link (FB-CL) circuit to assist its soft transition and forced commutation.
Adam, Grain P.   +3 more
core   +2 more sources

Distributed Secondary Frequency Control through MTDC Transmission Systems

open access: yes, 2015
In this paper, we present distributed controllers for sharing primary and secondary frequency control reserves for asynchronous AC transmission systems, which are connected through a multi-terminal HVDC grid.
Andersson, Göran   +4 more
core   +2 more sources

Legislative History of the Fair Labor Standards Act [PDF]

open access: yes, 1939
With recent advances in power electronic technology, High-Voltage Direct Current (HVDC) transmission system has become an alternative for transmitting power especially over long distances.
Forsythe, John S.
core   +1 more source

Optimal Control Design for Multiterminal HVDC [PDF]

open access: yes, 2013
This thesis proposes an optimal-control based design for distributed frequency control in multi-terminal high voltage direct current (MTDC) systems.
de Courreges d'Ustou, Benoit
core  

Home - About - Disclaimer - Privacy