Power-hardware design and topologies of converter-based grid emulators for wind turbines
Power-electronic-based grid emulators (GEs) emerge as a favorable method for testing grid-
code compliances of wind turbines (WTs), thanks to their full controllability and improved …
code compliances of wind turbines (WTs), thanks to their full controllability and improved …
Electric signature detection and analysis for power equipment failure monitoring in smart grid
Power equipment is one kind of basic element in smart grid, and how to design an efficient
detection and analysis scheme of electric signature (ES) for power equipment failure (PEF) …
detection and analysis scheme of electric signature (ES) for power equipment failure (PEF) …
Three-phase transformer inrush current reduction strategy based on prefluxing and controlled switching
Y Pan, X Yin, Z Zhang, B Liu, M Wang, X Yin - IEEE Access, 2021 - ieeexplore.ieee.org
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 …
one hand, it will have a negative impact on the safety of the transformer itself, and even …
A simplified phase-controlled switching strategy for inrush current reduction
H Ni, S Fang, H Lin - IEEE Transactions on Power Delivery, 2020 - ieeexplore.ieee.org
High inrush current severely threats the safe operation of the power system and
transformers, which may lead to mal-operation of overcurrent protection device, internal …
transformers, which may lead to mal-operation of overcurrent protection device, internal …
Research on residual flux density measurement for single-phase transformer core based on energy changes
C Huo, Y Wang, S Wu, C Liu - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
When the power transformer is reconnected to the power grid, and if there is a large residual
flux in the iron core, an inrush current may result. To suppress inrush current, the detailed …
flux in the iron core, an inrush current may result. To suppress inrush current, the detailed …
[HTML][HTML] A novel method for measuring residual flux density of the single-phase transformer core based on phase difference
Y Ren, Y Wang, C Liu, S Wu - AIP Advances, 2023 - pubs.aip.org
A serious inrush current may occur when a power transformer is re-energized, which will
cause many adverse effects on power equipment and the power grid. The corresponding …
cause many adverse effects on power equipment and the power grid. The corresponding …
Determining the residual magnetic flux value of a single-phase transformer using a minor hysteresis loop
D Vulin, K Milicevic, I Biondic… - IEEE transactions on …, 2020 - ieeexplore.ieee.org
Residual magnetic flux can cause significant problems in electric power system operation if
not taken into consideration. The laboratory setup and experimental procedure for …
not taken into consideration. The laboratory setup and experimental procedure for …
Accurate transformer inrush current analysis by controlling closing instant and residual flux
BC Sung, S Kim - Electric Power Systems Research, 2023 - Elsevier
This paper proposes a comprehensive process for analyzing accurate transformer inrush
current by elaborately controlling the closing instant of a circuit breaker and the level of …
current by elaborately controlling the closing instant of a circuit breaker and the level of …
Improved flux-controlled VFCV strategy for eliminating and measuring the residual flux of three-phase transformers
The residual flux (RF) in three-phase transformers can dramatically increase the inrush
current when the transformer is energized. The RF can also severely interfere with …
current when the transformer is energized. The RF can also severely interfere with …
[PDF][PDF] 基于软启动的变压器励磁涌流抑制方法
李春艳， 周念成， 王强钢， 廖建权… - 电工技术学报, 2020 - dgjsxb.ces-transaction.com
摘要变压器空载合闸时一次绕组可能产生幅值很高的励磁涌流, 这会对变压器自身和电网稳定
运行造成不利影响, 甚至导致继电保护装置误动作. 该文分析了变压器励磁涌流产生的机理 …
运行造成不利影响, 甚至导致继电保护装置误动作. 该文分析了变压器励磁涌流产生的机理 …