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Detection of Current Transformer Saturation Based on Machine Learning [PDF]

Mathematics
One of the tasks in the operation of electric power systems is the correct functioning of the protection system and emergency automation algorithms. Instrument voltage and current transformers, operating in accordance with the laws of electromagnetism ...
Ismoil Odinaev, Andrey Pazderin, Murodbek Safaraliev, Firuz Kamalov, Mihail Senyuk, Pavel Y. Gubin   +5 more
doaj   +2 more sources

Advanced Fault Detection in Power Transformers Using Improved Wavelet Analysis and LSTM Networks Considering Current Transformer Saturation and Uncertainties

Algorithms
Power transformers are vital and costly components in power systems, essential for ensuring a reliable and uninterrupted supply of electrical energy. Their protection is crucial for improving reliability, maintaining network stability, and minimizing ...
Qusay Alhamd, Mohsen Saniei, Seyyed Ghodratollah Seifossadat, Elaheh Mashhour   +3 more
doaj   +2 more sources

Prevention of the current transformer saturation by using negative resistance

IET Generation, Transmission & Distribution, 2021
In the power grid, various conditions may occur that saturate the core of a current transformer. Saturation of the protection core of the current transformers can cause a malfunction in the protection relays.
Saeed Sanati, Yousef Alinejad‐Beromi
doaj   +1 more source

Differential Protection of Transmission Transformer for Large-Scale Doubly-Fed Wind Farms Based on Detrended Analysis

Zhongguo dianli, 2023
Since the fault current output from the doubly-fed wind farm has frequency deviation characteristics and contains large harmonic components, when an internal fault occurs in the transmission transformer for the doubly-fed wind farm, the ratio of the ...
Yanchun XU, Zhongyao FAN, Sihan SUN, Lu MI   +3 more
doaj   +1 more source

Analysis of operation of transformer differential protection under current transformer saturation: Software simulations and relay testing [PDF]

Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2021
In the paper the analyses of the current transformer saturation influence to operation of differential protection are presented. Analyses are performed using a simulation tool and a relay model, as well as using the physical relay by injecting test ...
Sučević Nikola, Gligorov Saša, Stojanović Zoran   +2 more
doaj   +1 more source

EVALUATION OF CURRENT SIGNALS AT OBSERVED POINTS OF THE ELECTRICAL NETWORK IN PROBLEMS OF IDENTIFICATION OF CURRENT TRANSFORMER SATURATION

Вестник Северо-Кавказского федерального университета, 2022
Despite the fact that the problem of saturation of current transformers (CT) has been known for a long time, it has not lost its relevance now. Cases of malfunctioning as a result of oversaturation of CT are still recorded today.
P. Shagimardanov
doaj   +1 more source

An Artificial Neural Network Developed in MATLAB-Simulink for Reconstruction a Distorted Secondary Current Waveform. Part 1

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2021
Recently, there has been an increased interest in the use of artificial neural networks in various branches of the electric power industry including relay protection.
Yu. V. Rumiantsev, F. A. Romaniuk
doaj   +1 more source

Simulation of the saturation process of a current transformer with a load [PDF]

Journal Of Applied Informatics, 2021
The article deals with the mathematical basis and simulation of the saturation processes of current transformers with aperiodic components of short-circuit currents. Saturation processes of current transformers can affect the correct operation of the protections.
Kirill K. Krutikov, Vyacheslav V. Rozhkov, Vladimir V. Fedotov   +2 more
openaire   +1 more source

An Artificial Neural Network Developed in MATLAB-Simulink for Reconstruction a Distorted Secondary Current Waveform. Part 2

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2022
Recently, there has been an increased interest in the use of artificial neural networks in various branches of the electric power industry including relay protection.
Yu. V. Rumiantsev, F. A. Romaniuk
doaj   +1 more source

Controlling Transformer Magnetizing Offset Current in Isolated Phase-Shift Full-Bridge Converters Using a Luenberger Observer

International Transactions on Electrical Energy Systems, 2022
This paper proposes a flexible digital control scheme for isolated phase-shift full-bridge (PSFB) converters. The required transformer suffers from inevitable imbalance of magnetic flux resulting in an increased magnetizing DC-offset current that ...
Angelika Neumann, Sönke Meynen, Ahmad Rahmoun, Daniel Ziegler, Thomas Kirchartz   +4 more
doaj   +1 more source