Results 11 to 20 of about 36,891 (314)

Transformer Internal Faults Simulation

open access: yesAdvances in Electrical and Computer Engineering, 2008
This paper presents a novel method of modeling internal faults in a power transformer. The method leads to a model which is compatible with commercial phasor-based software packages. Consequently; it enables calculation of fault currents in any branch of
KOOCHAKI, A.   +2 more
doaj   +2 more sources

The effects of normal fault movement on the failure mechanism of water conveyance tunnels considering multi-field interaction [PDF]

open access: yesScientific Reports
Tunnels of large water conveyance projects often cross active faults and are therefore exposed to permanent ground deformation induced by normal fault dislocation.
Zhang Xinwei   +2 more
doaj   +2 more sources

Discrimination of Transformer Inrush Currents and Internal Fault Currents Using Extended Kalman Filter Algorithm (EKF)

open access: yesEnergies, 2021
The discrimination of inrush currents and internal fault currents in transformers is an important feature of a transformer protection scheme. The harmonic current restrained feature is used in conventional differential relay protection of transformers. A
Sunil Kumar Gunda, D V S S Siva Sarma
exaly   +3 more sources

Internal structure and sealing properties of the volcanic fault zones in Xujiaweizi Fault Depression, Songliao Basin, China

open access: yesPetroleum Exploration and Development, 2014
Through outcrop observation of the internal structure of volcanic fault zone and in combination with fault sealing mechanism research and lithology juxtaposition evaluation, this paper analyzes the internal structure and lateral fault sealing of a ...
Lingdong Meng, Xiaofei Fu
exaly   +3 more sources

Simulation Study on Internal Fault of Transformer

open access: yesPhysics Procedia, 2012
AbstractThe paper studies internal fault of transformer. We established the primary system model of transformer based on MATLAB/Simulink, and setted calculation combined with actual differential protection for a given parameter transformer. Using simulink to simulate test of short-circuit.
Di He
exaly   +2 more sources

Differential Protection of ISPST Using Chebyshev Neural Network ‎ [PDF]

open access: yesJournal of Operation and Automation in Power Engineering, 2023
An Indirect Symmetrical Phase Shift Transformer (ISPST) represents both electrically connected and magnetically coupled circuits, which makes it unique compared to a power transformer.
S. K. Bhasker   +3 more
doaj   +1 more source

Development and Validation of a Special Protection System for Internal Fault in a High-Power Three-Level NPC VSC

open access: yesEnergies, 2021
This paper describes the development and validation of an innovative protection system based on medium-voltage fuses for a high-power switching conversion system.
Mattia Dan   +5 more
doaj   +1 more source

Influence analysis of principal stress deflection on fault stability based on theory of internal and external stress fields

open access: yesMeikuang Anquan, 2021
To explore principal stress deflection effect on the stability of fault, based on the theory of internal stress field, the reason of principal stress deflection is explained, the mechanical structure model is established to calculate the internal and ...
DONG Shuangyong, LI Wenzhou
doaj   +1 more source

Fault Tolerant Control in Shape-Changing Internal Robots [PDF]

open access: yes2020 IEEE International Conference on Robotics and Automation (ICRA), 2020
It is known that the interior of the human body is one of the most adverse environments for a foreign body, such as an in-vivo robot, and vice-versa. As robots operating in-vivo are increasingly recognized for their capabilities and potential for improved therapies, it is important to ensure their safety, especially for long term treatments when little
Balasubramanian, L.   +2 more
openaire   +2 more sources

A Location Method for AC Fault in LCC-HVDC System Based on Virtual Conduction Width Characteristics

open access: yesIEEE Access, 2023
When an AC fault occurs in HVDC transmission system, the transient response change in the rate of change of current and voltage, which may lead to the unexpected action behavior of converter protection.
Shanshan Yin
doaj   +1 more source

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