Results 61 to 70 of about 12,423 (301)
机车电传动, 2022 A hybrid DC circuit breaker is the core protection equipment of a DC system, and its key parameters are critical to the products design and application, so the research on the influencing factors to such key parameters is of great significance to the ...
LUO Wenguang +4 more
doaj
A new hybrid DC circuit breaker topology
IOP Conference Series: Earth and Environmental Science, 2018 Being advantageous for long-distance power transmission and new energy connection, DC system has wide range of applications in many scenarios. As the capacity of DC power grids increases, the fault current is more difficult to interrupt. And the DC circuit breaker which is very important for protecting DC grid attracts more and more attention of ...
C C Zhu +5 more
openaire +1 more source
DC fault protection structures at a DC-link node in a radial multi-terminal high-voltage direct current system [PDF]
, 2016 In a multi-terminal HVDC system, DC circuit breakers (DCCBs) are conventionally connected in a star-configuration to enable isolation of a DC fault from the healthy system parts.
Fletcher, John E. +3 more
core +1 more source
Advanced Functional Materials, EarlyView.This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari +4 more
wiley +1 more source
International Journal of Electrical Power & Energy SystemsThe global new photovoltaic installed capacity reached 345.5GW in 2023. As the installed capacity of photovoltaic power generation systems increases worldwide, there is a growing demand for circuit breakers to withstand higher voltages on the DC side of ...
Jianning Yin +3 more
doaj +1 more source
IET Generation, Transmission & Distribution, 2023 The high‐voltage direct current (HVDC) power transmission short‐circuit fault protection is a big challenge, and it is the main obstacle to promote the HVDC multi‐terminal networks.
Xiong Zhang, Chaoran Zhuo, Xu Yang
doaj +1 more source
Impact Assessment of Hypothesized Cyberattacks on Interconnected Bulk Power Systems
, 2018 The first-ever Ukraine cyberattack on power grid has proven its devastation by hacking into their critical cyber assets. With administrative privileges accessing substation networks/local control centers, one intelligent way of coordinated cyberattacks ...
Ginter, Andrew +4 more
core +1 more source
Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges
Advanced Functional Materials, EarlyView.Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky +3 more
wiley +1 more source
Frontiers in Energy Research, 2023 A massive number of DC circuit breaker is usually necessary to be installed to protect HVDC grids from DC faults, this will lead to high capital costs because large number of expensive IGBT-in-series are used.
Qingpeng Zeng +9 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.
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