Results 1 to 10 of about 869,852 (180)

A short circuit current evaluation method based on the branch fault current of the circuit breaker

Zhejiang dianli, 2023
With the rapid load growth and the increasing density of power grids， the overrun short-circuit current becomes increasingly aggravated. To accurately assess the short-circuit current level of the system is crucial to ensure the safe and stable operation
DONG Wei, HUA Wen, SHENTU Leixuan, ZHOU Jinghao, WANG Longfei, WANG Bowen   +5 more
doaj   +1 more source

Practical calculation of asymmetric short circuit current of DFIG connected to distribution network [PDF]

E3S Web of Conferences, 2020
In view of the existing complex analytic calculations of DFIG short-circuit current are hardly applied in engineering projects, a practical calculation of asymmetric short-circuit current of DFIG is proposed.
Fu Pengwu, Yang Dongwen, He Zhi, Duan Zhenfeng, Wang Dengmei   +4 more
doaj   +1 more source

Review on Short-circuit Current Analysis and Suppression Techniques for MMC-HVDC Transmission Systems

Applied Sciences, 2020
The modular multilevel converter (MMC) has been widely adopted in high voltage direct current (HVDC) transmission systems due to its significant advantages.
Boyu Qin, Wansong Liu, Ruowei Zhang, Jialing Liu, Hengyi Li   +4 more
doaj   +1 more source

Development of Smart Circuit Breakers to Prevent Fire from Short Circuit Current

วารสารวิทยาการสารสนเทศและเทคโนโลยีประยุกต์, 2021
According to the survey results, the top three causes of fire in Thailand: 1) garbage and hay burning, 2) short-circuit current, and 3) misuse of fuel.
Suchart Khummanee, Aekkarach Artcharoen, Peerawat chanobrum   +2 more
doaj   +1 more source

Analysis of contact ablation of circuit breaker after short circuit current breaking

AIP Advances, 2023
During the opening and closing process of the contact, it will undergo repeated arc ablation and wear. After each ablation and wear, the composition, performance, and shape of the contact surface constantly change, leading to cracks, slag drop, melting ...
Xiaopo Mao, Jianfeng Ye, Yu Xiong, Ze Tian, Kuan Hu, Jiaqiang Wang, Hongwu Feng   +6 more
doaj   +1 more source

Influence of capacitor-buffered hybrid DC circuit breaker on bipolar short circuit fault of three-terminal MMC-HVDC transmission system

Energy Reports, 2020
The flexible DC transmission system needs a DC circuit breaker to remove and isolate the bipolar short-circuit fault to prevent the excessive short-circuit current from damaging the DC transmission system.
Can Ding, Xiaojian Tian, Taiping Nie, Zhao Yuan   +3 more
doaj   +1 more source

Active Reduction of Short-Circuit Current in Power Distribution Systems

Energies, 2020
In this paper, a new concept of short-circuit current (SCC) reduction for power distribution systems is presented and analyzed. Conventional fault current limiters (FCLs) are connected in series with a circuit breaker (CB) that is required to limit the ...
Esteban Pulido, Luis Morán, Felipe Villarroel, José Silva   +3 more
doaj   +1 more source

Experimental study on short-circuit current characteristics of a photovoltaic system with low voltage ride through capability under a symmetrical fault

Energy Reports, 2022
Large number of photovoltaic (PV) power plants connected to a power grid can bring significant impacts to fault currents and the operation of protection systems.
Shuai Yuan, Bao-Feng Yang, Jian-Ying Zhang   +2 more
doaj   +1 more source

A zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switching

Gong-kuang zidonghua, 2020
The existing zero-crossing point prediction algorithms of short-circuit current have some problems, such as complex calculation and big error. For three-phase short-circuit fault of coal mine power supply system, a zero-crossing point prediction ...
YU Shuohang, RONG Xiang, YANG Fan, WEI Lipeng   +3 more
doaj   +1 more source

Short-Circuit Fault Current Parameter Prediction Method Based on Ultra-Short-Time Data Window

Energies, 2022
The prediction of short-circuit current parameters is essential for the adoption of short-circuit fault limiting techniques and the reliable cut-off of circuit breakers.
Mengjiao Wang, Xinlao Wei, Zhihang Zhao
doaj   +1 more source