Results 11 to 20 of about 235 (103)

High‐voltage direct current fault current interruption: A technology review

open access: yesHigh Voltage, 2021
This review paper describes fault current interruption principles and various high‐voltage direct currrent (HVDC) circuit breaker technologies. First, fundamentals of HVDC fault current interruption and a generic set of requirements of HVDC circuit ...
Rene P. P. Smeets, Nadew A. Belda
doaj   +1 more source

Modelling and stability assessment of the MMC‐HVDC energy interconnected system with the cyber delay of communication network

open access: yesIET Energy Systems Integration, 2021
Modular multilevel converters (MMCs) are favoured in high voltage direct current (HVDC) systems because of huge energy transmission capacity and few harmonics. However, the complicated control and the intricate communication network introduce cyber delay
Jingming Cao   +5 more
doaj   +1 more source

Comparación de flujos de potencia óptimos para redes AC/DC con penetración de recursos energéticos distribuidos considerando incertidumbre

open access: yes, 2023
En este proyecto de grado, se proponen cuatro novedosas metodologías que resuelven el problema del flujo de potencia óptimo unificado en una red híbrida AC/DC, teniendo en cuenta la presencia de sistemas de baterías y generación distribuida (GD).
Suárez Córdoba, Santiago
core   +1 more source

Transient fault identification method for bipolar short‐circuit fault on MMC‐HVDC overhead lines based on hybrid HVDC breaker

open access: yesHigh Voltage, 2021
A bipolar short‐circuit transient fault identification method for overhead transmission lines in modular multi‐level converter‐based high voltage direct current (MMC‐HVDC) grid based on the hybrid HVDC breaker is proposed.
Botong Li   +5 more
doaj   +1 more source

Harmonic domain modelling of direct connected generator and HVDC convertor units. [PDF]

open access: yes, 1998
This thesis describes a new method of analysing the harmonic content of direct connected generator-HVdc convertor units. Existing analysis techniques are reviewed, and their strengths and weaknesses are discussed.
Dinh, Nhut-Quang
core   +1 more source

State-variable approach to analysis of power systems including HVDC convertors

open access: yesInternational Journal of Electrical Power & Energy Systems, 1987
Abstract A new method is presented for the analysis of power systems including static convertors. The basic feature of the proposed method is that the state equations of each component of a power system can be written separately by considering fictitious sources at their terminals.
A. Lygdis   +3 more
openaire   +1 more source

Assessment and enhancement control for small‐signal voltage stability of VSC‐HVDC systems supplying passive industrial loads

open access: yesIET Generation, Transmission & Distribution, 2023
This paper presents a comprehensive assessment for the small‐signal voltage stability of voltage source converter (VSC)‐HVDC systems supplying industrial loads represented by the induction motors (IMs) and provides a stability enhancement control for the
Yicheng Xue   +5 more
doaj   +1 more source

Modular multilevel converter‐based voltage source converter high‐voltage direct current valve operating test circuit

open access: yesIET Power Electronics, 2023
It is very important to obtain high reliability in the high‐voltage direct current (HVDC) system operation because of extremely high and huge power capacity.
Chi‐Hwan Bae   +2 more
doaj   +1 more source

A NOVEL CONTROL STRATEGY FOR SERIES-SHUNT POWER QUALITY COMPENSATOR

open access: yes, 2020
Advancement and extensive use of power electronic devices such as, fast switching uncontrolled/controlled convertors, invertors and cyclo-converters, high voltage power convertors used in HVDC, high voltage drives in traction system, arc furnaces, modern
PATIL, DADGONDA   +1 more
core   +1 more source

Semi‐hot redundant control method for modular multilevel converter‐based high‐voltage direct current systems under submodules fault

open access: yesIET Power Electronics, 2023
A modular multilevel converter‐based high voltage direct current (MMC‐HVDC) system involves a large number of cascading submodules (SMs). The failure of SMs may critically degrade the system performance.
Lixia Yang   +4 more
doaj   +1 more source

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