Results 11 to 20 of about 872,445 (297)

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

open access: yesApplied 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   +4 more
doaj   +1 more source

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

open access: yesวารสารวิทยาการสารสนเทศและเทคโนโลยีประยุกต์, 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   +2 more
doaj   +1 more source

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

open access: yesAIP 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   +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

open access: yesEnergy 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   +3 more
doaj   +1 more source

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

open access: yesGong-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   +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

open access: yesEnergy 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   +2 more
doaj   +1 more source

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

open access: yesEnergies, 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

Active Reduction of Short-Circuit Current in Power Distribution Systems

open access: yesEnergies, 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   +3 more
doaj   +1 more source

Development of Bus and Line Control Method for Short-Circuit Current Reduction Using Genetic Programming

open access: yesEnergies, 2022
In this study, genetic programming (GP) is used for optimizing bus and line separation methods to reduce the short-circuit current. Expanding power systems led to intensive electric power and more transmission lines, reducing the grid impedance.
Dabin Son, Sangwook Han
doaj   +1 more source

Characteristics of Short-Circuit Current in Distribution Network with Doubly-Fed Wind Power System

open access: yesShanghai Jiaotong Daxue xuebao, 2023
The doubly-fed induction generator (DFIG) is connected to the distribution network as a distributed power source, which turns a radial single power supply system into a dual power supply system and changes the topology of the distribution network. When a
XI Xinze, XING Chao, QIN Risheng, HE Tingyi, HE Peng, MENG Xian, CHENG Chunhui
doaj   +1 more source

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