Results 51 to 60 of about 2,509 (300)
Automatika, 2019 During the operation process of the high-voltage circuit breaker, the changes of vibration signals reflect the machinery states of the circuit breaker. The extraction of the vibration signal feature will directly influence the accuracy and practicability
Mingliang Liu +3 more
doaj +1 more source
The DC circuit-breaker for low-voltage grids : design, implementation and analysis of DC circuit-breaker with countercurrent injection principle [PDF]
, 2021 Faults in DC systems are difficult to interrupt compared to their AC counterparts due to absence of natural current-zero (CZ) crossing in DC current. This puts forward the need of enhanced arc chambers inside the circuit-breaker to cope with DC arc.
Virdag, Muhammad-Ali-Khan
core +1 more source
Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions
Advanced Functional Materials, EarlyView.This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian +7 more
wiley +1 more source
Study on working condition of 750 kV AC filter breaker in ± 1100 kV UHVDC system
The Journal of Engineering, 2019 In this article, the Changji-Guquan ± 1100 kV ultra-high voltage direct current (UHVDC) system has been established by PSCAD software, especially for the arc of the circuit breakers.
Zexin Zhao +4 more
doaj +1 more source
Research on a Novel DC Circuit Breaker Based on Artificial Current Zero-Crossing
IEEE Access, 2020 Modular multilevel converter-based high voltage direct-current (MMC-HVDC) transmission has developed rapidly because of its flexibility, reliability and efficiency.
Shangfu Teng, Zhifeng Zhang, Liye Xiao
doaj +1 more source
Advanced Functional Materials, EarlyView.Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein +4 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner +14 more
wiley +1 more source
D-Distance Technique to Determine Failure Probability of Power Circuit Breaker
Energies, 2023 In this paper, a new D-distance factor is proposed to determine the failure probability and to prioritize maintenance actions of power circuit breakers in high-voltage substations.
Suphon Kumpalavalee +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.ABSTRACT Electronic waste has emerged as a major environmental challenge, driven by the massive consumption and a limited lifetime of modern electronic devices, stimulating the development of sustainable electronics. Here, an all‐biomaterial gelatin‐choline‐citric acid ([Ch][CA]) ionogel is developed as an active binder to realize self‐sintered ...
Lin Guo +10 more
wiley +1 more source
Fault Simulation of High-Voltage Circuit Breaker in Low-Temperature Environment [PDF]
, 2023 High-voltage circuit breaker is important for power system, whose failure will affect the safe and stable operation. Low-temperature environment would impact the breaking performance of circuit breakers. In order to study the influence of low temperature
Jian ZHANG +5 more
core +1 more source