Results 11 to 20 of about 297 (183)

DC vacuum circuit breaker

CIRED - Open Access Proceedings Journal, 2017
In the last years the progressive increase of distributed and non-programmable energy sources arise the interest in the use of DC for medium-voltage distribution systems. The study focuses on the design considerations of the apparatus required to support the management and protection of these applications.
Lars Liljestrand, Magnus Backman, Lars Jonsson, Marco Riva, Edgar Dullni   +4 more
openaire   +1 more source

Investigation on vacuum arc characteristics and anode temperature of 16.7 Hz vacuum interruption [PDF]

AIP Advances
Low-frequency vacuum circuit breakers exhibit longer arcing durations during contact separation compared to power frequency currents, due to the lower frequency of the interrupted AC arc.
Jun Xiong, Haicheng Hong, Xihao Zhou, Junxiang Liu, Haibo Su, Jun Xiao, Xiaolong Huang, Shenli Jia   +7 more
doaj   +1 more source

Voltage transient management for Alternating Current trains with vacuum circuit breakers

IET Electrical Systems in Transportation, 2022
Alternating current power supplies and rolling stock with 25 kV (50 or 60 Hz) and 15 kV (16.7 Hz) traction systems do not have the characteristics and behaviour of a typical three‐phase medium‐voltage distribution system. Switching inductive loads with a
Thomas Moore, Felix Schmid, Pietro Tricoli   +2 more
doaj   +1 more source

Optimisation of commutation circuit parameters for DC vacuum circuit breakers

The Journal of Engineering, 2019
As the environmental problems caused by the consumption of the non-renewable fossil energy are getting increasingly serious, the new energy power generation has received wide attentions.
Deen Yu, Hai Chen, Wei Liu, Xiaoming Liu
doaj   +1 more source

Transient characteristics and sites of pre‐breakdown in spark conditioning for high‐voltage vacuum interrupter under power frequency voltage

IET Generation, Transmission & Distribution, 2023
The objective of this paper is to determine the transient characteristics and sites of the pre‐breakdown (pre‐BD) in the spark conditioning under power frequency voltage (PFV) in vacuum.
Hui Ma, Yu Du, Jingyu Shen, Yuanzhao Li, Yulong Gao, Zhiyuan Liu, Jianhua Wang, Yingsan Geng   +7 more
doaj   +1 more source

Simulation study on modeling of vacuum arc characteristics and anode temperature rise in low-frequency vacuum interruption [PDF]

AIP Advances
Low-frequency transmission technology has been widely used in medium- and long-distance electricity transmission scenarios such as offshore wind power transmission due to its advantages of low cost and strong ability to pool renewable energy.
Yanting Li, Junjie Li, Xiaolong Huang, Haibo Su, Qiang Zhang, Yanmin Li, Shenli Jia   +6 more
doaj   +1 more source

TECHNICAL AND ECONOMIC ASPECTS OF IMPLEMENTING AUTOMATION AND VACUUM EQUIPMENT IN DISTRIBUTION NETWORKS

Автоматизация технологических и бизнес-процессов
The article examines current approaches to optimizing the operating modes of distributed technical systems based on automation and intelligent control technologies, using the example of 10 kV electric networks.
M. S. Yukhymchuk, V. O. Lesko, Yu. Yu. Ivanov, S. S. Perepelytsia   +3 more
doaj   +1 more source

Simulation Analysis for Opening Performance of Medium Voltage Vacuum Circuit Breaker Based on ADAMS and Maxwell

MATEC Web of Conferences, 2017
The circuit breakers play a important role in control and protect the power systemand the vacuum circuit breaker has beenwidely used in the field of medium voltage with its excellent opening performance.Virtual prototyping technology is alsobecamemore ...
Ding Xianliang, Wang Zhiming, Yin Qinlin, Chen Pengwei, Zhou Shijin, Yang Yang   +5 more
doaj   +1 more source

DC interruption characteristic of vacuum circuit breaker

Electrical Engineering in Japan, 2005
AbstractA high‐speed vacuum circuit breaker (HSVCB) has been investigated. HSVCB makes high‐frequency current superimposed on a fault current so that the current is forced to be zero and is interrupted. Its interruption performance is considered to be dependent on the rate of change of the current (di/dt). As a fundamental research, we investigated the
Odaka, Hiromi, Yamada, Masataka, Sakuma, Ryohei, Ding, Cuie, Kaneko, Eiji, Yanabu, Satoru   +5 more
openaire   +2 more sources

Graphene-Enhanced CuW Composites for High-Voltage Circuit Breaker Electrical Contacts

Applied Sciences
To address the issue of over-standard short-circuit currents in a power system, it is imperative to enhance the comprehensive performance of the electrical contacts, which serve as the lynchpin of circuit breakers, so as to improve the breaking capacity ...
Tan Liu, Yu Han, Dongchen Jia, Zhen Pang, Yuwei Fu, Zhongxiao Song, Yi Ding   +6 more
doaj   +1 more source