Results 41 to 50 of about 6,833,731 (285)

A Survey on Fault Clearing and Protection Technology of Power Electronic Transformer in Distribution Network

Kongzhi Yu Xinxi Jishu, 2017
Protection system for power electronic transformer is an important measure to ensure its safe and stable operation in engineering application. Firstly, taking AC-DC-AC type power electronic transformer as an example, this paper pointed out its topology ...
ZHOU Tingdong, XU Yonghai
doaj  

Efficient practical method for differential protection of power transformer in the presence of the fault current limiters

IET Generation, Transmission & Distribution, 2023
The algorithms of the present generation of practical differential relays are based on two methods. The first method is based on the ratio of the harmonic content of the differential current, and the second one is based on the length of the time interval
Ali Sahebi, Hossein Askarian‐Abyaneh, Seyed Hossein Hesamedin Sadeghi, Haidar Samet, Om Parkash Malik   +4 more
doaj   +1 more source

Bridging in contaminated transformer oil under DC and AC electric field

, 2013
One of the key components in high voltage transmission and distribution systems are power transformers and their consistent operation is of utmost importance to energy utilities and users.
Wilson, G, Mahmud, S., Jarman, P, Golosnoy, I. O., Mahmud, S, Chen, G., Wilson, G., Golosnoy, I O, Chen, G, Jarman, P.   +9 more
core   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

FEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Impedance algorithm for protection of power transformers

2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008
A new impedance algorithm to protect power transformer is presented in this paper. The algorithm is based on three currents and three voltages measured at each side of the transformer. An edge detection technique using fast Fourier transform (FFT) provides inputs for an impedance scheme to properly detect and isolate faults within the transformer ...
R. E. Torres, A. H. Osman, O. P. Malik
openaire   +3 more sources

Development of an IoT-Based Differential Protection System for Power Transformers: A Case Study of New Enma Substation, Aden, Yemen

IEEE Access
Differential protection is the primary and fastest protection scheme for power transformers; however, its failure may lead to severe thermal and mechanical damage to the transformer.
Ali Khaled Ali Mohammed Alshurmani, Taha Mahmoud Radman, Mohammed Fadhl Abdullah   +2 more
doaj   +1 more source

Differential Protection of Power Transformer using Wavelet Transform

International Journal of Recent Technology and Engineering (IJRTE), 2019
This paper presents wavelet transform method for the analysis of differential currents of power transformer which can act as an accurate classifier between magnetizing inrush current and internal faults to avoid the needless tripping of circuit breaker.
Mudita Banerjee*, Dr. Anita Khosla
openaire   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

FEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass, Dana Reichmann, Gábor Erdős   +2 more
wiley   +1 more source

Review of methodologies used for detection of magnetising inrush and fault conditions in power transformer

IET Energy Systems Integration, 2021
Reliable and dedicated protection of the transformer is the main requirement in the power system due to the supervision of a highly expensive equipment transformer. Non‐linear characteristics of the transformer give mysterious behaviour for the period of
Maulik Raichura, Nilesh Chothani, Dharmesh Patel   +2 more
doaj   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

FEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança, Eline L. Jansen, Jorine M. Eeftens   +2 more
wiley   +1 more source