Results 21 to 30 of about 1,832 (200)

Mechanical Fault Diagnosis of High Voltage Circuit Breakers Based on Phase Space Reconstruction and Improved GSA-SVM

Zhongguo dianli, 2021
The vibration signals generated by transmission and impact of circuit breaker mechanical components have chaotic characteristics, which are difficult to be analyzed with conventional signal processing methods.
Xiaofei XIA, Yufeng LU, Yi SU, Jian YANG
doaj   +1 more source

Feature extraction and state discrimination of opening and closing coils of high-voltage circuit breakers based on corner point location

Zhejiang dianli
The extraction of current characteristics from the opening and closing coils is a crucial method for monitoring the state of high-voltage circuit breakers.
WANG Shaohe, JIANG Jiongting, JIANG Keruo, ZHANG Miaobin, WANG Fenghua, CHEN Xiaoxin   +5 more
doaj   +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, Jie Guo, Fang Yu, Xuni Rao, Xiaoke Wu   +4 more
doaj   +1 more source

Resilience in a noisy urban system

Regional Science Policy &Practice, EarlyView., 2023
Abstract The ability of cities to recuperate from disturbances and return to their evolutionary pathways depends, first and foremost, on the type of damage that the shock created. But in addition, it depends on how information is transmitted in the urban system and on how noise filters distort the information that reaches economic agents.
Dani Broitman, Daniel Czamanski
wiley   +1 more source

Analysis of multiple-faults of high-voltage circuit breakers based on non-negative matrix decomposition

Global Energy Interconnection
High-voltage circuit breakers are the core equipment in power networks, and to a certain extent, are related to the safe and reliable operation of power systems. However, their core components are prone to mechanical faults.
Yongrong Zhou, Zhaoxing Ma, Hao Chen, Ruihua Wang   +3 more
doaj   +1 more source

INVESTIGATION OF MECHANICAL STRESSES IN THE DRIVE SHAFT OF MV VACUUM CIRCUIT BREAKER

Electrical engineering & Electromechanics, 2017
Introduction. In the last 10-15 years a dominant position in the market of medium voltage circuit breakers, vacuum circuit breakers have taken in which as an actuator mono- or bistable actuators with permanent magnets are used.
E. I. Baida, B. V. Klymenko
doaj   +1 more source

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

High 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

Sustainable Carbon Fibers Enable Stable Long‐Term Lithium Metal Deposition for Prospective Zero‐Excess Lithium Metal Batteries

Advanced Energy Materials, EarlyView.
This work presents lightweight, lignin‐derived carbon fiber current collectors that enable controlled lithium deposition. Structural defects and intermediate‐sized pores stabilize pre‐nucleation quasi‐metallic lithium clusters, promoting uniform lithium plating and stripping.
Samantha L. S. Southern, Jonathon Cottom, Jana B. Fritzke, Emma N. Antonio, Zhenyu Guo, Bhavini Patel, Romain Tort, Ifan E. L. Stephens, Camilla Di Mino, Clare P. Grey, Rhodri Jervis, Emilia Olsson, Heather Au, Maria‐Magdalena Titirici   +13 more
wiley   +1 more source

Topological Properties of International Commodity Market: How Uncertainty Affects the Linkages?

Agribusiness, EarlyView.
ABSTRACT The study aims to explore the network topology of the international commodity market by examining the interconnections among 21 commodity futures across various categories, including energy, precious and industrial metals, and agriculture. We analyze the market structure of these commodity futures under both low and high uncertainty conditions
Ibrahim Yagli, Bayram Deviren
wiley   +1 more source

Linking Brain Morphometry to Psychometric Measures and Energy‐Metabolic Biomarkers in Adults With Autism Spectrum Disorder

Autism Research, EarlyView.
ABSTRACT Autism spectrum disorder (ASD) is associated with differences in neurodevelopment and altered metabolism, yet the interplay between brain morphometry, mitochondrial and energy metabolism biomarkers, and autistic traits in adults remains poorly understood. This study investigates the link between brain structure, psychometric measures, and both
Eleonora Esposto, Kathrin Nickel, Dominique Endres, Kimon Runge, Katharina Domschke, Thomas Lange, Marco Reisert, Anke Schumann, Cinzia Niolu, Ludger Tebartz van Elst, Simon Maier   +10 more
wiley   +1 more source