Results 61 to 70 of about 11,878 (206)
AIP Advances, 2023 During the fault current breaking process of a mechanical direct current vacuum circuit breaker (DC VCB) with double-break (DB), the mechanism’s dispersion can result in a gap difference between the two breaks. A DB DC VCB breaking experiment platform is
Chongyang Huang +5 more
doaj +1 more source
IEEE AccessValve-side single-phase-to-ground (SPG) faults are atypical yet critical for the operation of half-bridge (HB) Modular Multilevel converter (MMC) bipolar or asymmetrical monopolar systems.
Muhammad Usman +2 more
doaj +1 more source
Hybrid HVDC for supply of power to offshore oil platforms [PDF]
, 2004 A HVDC hybrid system, comprising a line commutated thyristor HVDC converter and a STATCOM, is proposed in this paper for supplying power to offshore oil platforms that do not have their own generation. The proposed system combines the robust performance,
Andersen, B., Cartwright, P., Xu, L.
core
Fault mode operation strategies for dual H-bridge current flow controller in meshed HVDC grid [PDF]
, 2018 Peer ...
Carvalho, Adriano +5 more
core +2 more sources
EnergiesThe challenge of accurately diagnosing mechanical failures in high-voltage circuit breakers is exacerbated by the non-stationary characteristics of vibration signals.
Mingkun Yang +10 more
doaj +1 more source
Beyond Power over Ethernet : the development of Digital Energy Networks for buildings [PDF]
, 2012 Alternating current power distribution using analogue control and safety devices has been the dominant process of power distribution within our buildings since the electricity industry began in the late 19th century.
Banks, Gerry +3 more
core
A Study on the Hybrid Arc Extinguishing Mechanism of the DC Circuit Breaker
The Journal of Korea Navigation Institute, 2015 공급되는 전력은 교류 전원이므로 실질적으로 필요로 하는 부하의 공급 전원인 직류 전원을 만족하기 위하여 교류 전원을 다시 직 류로 변환하여 사용하고 있다. 태양광, 풍력, 연료전지 등 신재생 에너지원의 경우 직류 발전을 하는 발전원으로 교류로 변환을 통 해 계통에 유입되고 다시 직류로 변환되어 부하에 공급하게 되는 다단 변환을 하게 되어 손실은 지속적으로 증가하게 된다. 에너지 원의 효율적인 사용을 위한 직류 기반의 배전 시스템이 필요로 하나, 부하뿐만 아니라 보호 기능을 구현하기 위한 직류 배선용 차 단기의 개발이 필요하다. 이에 본 연구에서는 영구 자석을 이용한 아크 소호 기술과 하이브리드 아크 소호 기술을 이용한 직류 아
Nam-Kyu Joo, Nam-Ho Kim
openaire +2 more sources
Delays in Protection Devices and Their Effects on Selectivity: The Reaction Time Gap
IEEE Open Journal of Power ElectronicsThis Paper investigates how the internal delays of circuit breakers until the limitation of the fault current affect the selectivity of a low-voltage direct current (LVDC)-grid under short-circuit conditions.
Johannes Gehring +5 more
doaj +1 more source
Active control of DC fault currents in DC solid-state transformers during ride-through operation of multi-terminal HVDC systems [PDF]
, 2016 When a pole-to-pole dc fault occurs in a multi-terminal HVDC system, it is desirable that the stations and dc solid-state transformers on healthy cables continue contributing to power transfer, rather than blocking.
Li, Rui +3 more
core +1 more source
Westinghouse programs in pulsed homopolar power supplies [PDF]
, 1984 This document details Westinghouse's ongoing study of homopolar machines since 1929 with the major effort occurring in the early 1970's to the present.
Litz, D. C., Mullan, E.
core +1 more source