Results 11 to 20 of about 9,639,269 (244)

Deep Learning-Based Algorithm for Internal Fault Detection of Power Transformers during Inrush Current at Distribution Substations

Energies
The reliability and stability of differential protection in power transformers could be threatened by several types of inferences, including magnetizing inrush currents, current transformer saturation, and overexcitation from external faults.
Sopheap Key, Gyu-Won Son, Soon-Ryul Nam
doaj   +2 more sources

Inrush Current Management During Medium Voltage Microgrid Black Start With Battery Energy Storage System

IEEE Access, 2022
This paper addresses the black start of medium voltage distribution networks (MV-DNs) by a battery energy storage system (BESS). The BESS consists of a two-level voltage source inverter interfacing MV-DN which has limited overcurrent capability.
Mahdi Shahparasti, Hannu Laaksonen, Kimmo Kauhaniemi, Panu Lauttamus, Stefan Strandberg, Jan Strandberg   +5 more
doaj   +2 more sources

Micro-Grid Inrush Current Stability Analysis

2021 IEEE International Joint EMC/SI/PI and EMC Europe Symposium, 2021
Transient currents can severely impact the operation of weak or islanded grids. Inrush current electromagnetic compatibility challenges, due to their unpredictable and intermittent nature, are very difficult to identify. Using multi-point synchronised measurements, analysis is performed on an inverter.
Matthee, Alexander, Moonen, Niek, Leferink, Frank   +2 more
openaire   +3 more sources

An innovative harmonic‐based approach for inrush current detection in low‐loss transformers

IET Generation, Transmission & Distribution
Transformer inrush current occurs due to the saturation of magnetic core. The magnetic characteristic of the core directly affects the inrush current waveform. Second harmonic and higher‐order harmonics are present in the inrush harmonic spectrum.
Saeed Sanati, Seyed‐Alireza Ahmadi, Majid Sanaye‐Pasand   +2 more
doaj   +2 more sources

Identification of Inrush Current Using a GSA-BP Network

Energies, 2023
Ensuring a stable and efficient transformer operation is a very crucial task nowadays, especially with the integration of modern and sensitive electrical equipment and appliances down the line. However, transformer maloperation still cannot be completely
Zhou Ruhan, Nurulafiqah Nadzirah Binti Mansor, Hazlee Azil Illias   +2 more
doaj   +2 more sources

Three-Phase Transformer Inrush Current Reduction Strategy Based on Prefluxing and Controlled Switching

IEEE Access, 2021
Inrush current with high amplitude is generated when the transformer is energized. On the one hand, it will have a negative impact on the safety of the transformer itself, and even cause the relay protection to malfunction.
Yuanlin Pan, Xianggen Yin, Zhe Zhang, Binyan Liu, Maolin Wang, Xin Yin   +5 more
doaj   +2 more sources

Inrush Current Control of High Power Density DC–DC Converter

Energies, 2020
This paper presents a complete mathematical design of the main components of 2 kW, 54 direct current (DC)–DC converter stage, which can be used as the second stage of the two stages of alternating current (AC)–DC telecom power supply.
Ahmed H. Okilly, Namhun Kim, Jeihoon Baek   +2 more
doaj   +2 more sources

A 13-level switched-capacitor-based multilevel inverter with reduced components and inrush current limitation. [PDF]

Sci Rep
This paper proposed a hybrid switched-capacitor inverter to reduce the number of components and achieve automatic capacitor balancing. The proposed structure combines a switched capacitor (SC) unit with a flying capacitor (FC).
Mansourizadeh H, Hosseinpour M, Seifi A, Shahparasti M.   +3 more
europepmc   +2 more sources

Contribution of inrush current to mechanical failure of power transformers windings

High Voltage, 2019
This work presents a study regarding the contribution of inrush current to the occurrence of mechanical fatigue in windings of a power transformer and, consequently, the impact of that phenomenon on the equipment's lifetime. In order to perform the study,
Rafael M.R. Barros, Edson G. da Costa, Edson G. da Costa, Jalberth F. Araujo, Filipe L.M. de Andrade, Tarso V. Ferreira   +5 more
doaj   +2 more sources

Transformer Inrush Current Mitigation Techniques for Grid-Forming Inverters Dominated Grids

IEEE Transactions on Power Delivery, 2023
The use of inverters-based resources (IBRs) is rising rapidly in power networks due to increased renewable energy penetration. This requires revisiting of classical network operation standards.
Abdulrahman Alassi, K. Ahmed, A. Egea-Àlvarez, C. Foote   +3 more
semanticscholar   +1 more source