Results 21 to 30 of about 4,007 (69)

Дослідження теплових процесів інвертора на базі IGBT модуля

Elektrotehnìka ta Elektroenergetika
Мета роботи. Дослідження теплових процесів інвертора на базі IGBT модуля для застосування в перетворювачі частоти для керування роботою асинхронним двигуном. Методи дослідження.
S.P. Lushchin, D.P. Paxar
doaj   +1 more source

Adaptive models of the four-switch buck-boost converter

Elektrotehnìka ta Elektroenergetika
Purpose. Development of an economic adaptive model for the power stage of a four-switches buck-boost converter (FSBB) together with a control system that adequately simulates all modes of its operation. Methodology.
O.V. Vasylenko, G.V. Snizhnoi
doaj   +1 more source

Optimal scheduling of electricity-carbon joint multilateral trading in regional power grid based on Nash negotiation

电力工程技术
Based on the background of the current electricity market and carbon trading market, aiming at the problems of insufficient consumption capacity and difficult peak shaving of regional power grids with new energy access, an optimal scheduling strategy of ...
Yonglin TIAN, Ning LIANG, Huihui XU, Jiafu LU, Yingzhan SHANG, Shenghang LUO   +5 more
doaj   +1 more source

Open-loop mode resonance risk determination based on measurement model

电力工程技术
The open-loop mode resonance theory is an important theoretical achievement to explain the mechanism of system instability caused by the grid connection of permanent magnet synchronous generator (PMSG), but the determination of the resonance risk of open-
Xingliang ZHANG, Wenjuan DU, Haifeng WANG   +2 more
doaj   +1 more source

Influence of low-frequency transmission system control on differential protection and optimization strategy

电力工程技术
As a fault occurs on lines of a two-terminal low-frequency transmission system, fault currents will be suppressed when frequency converters adopt negative sequence current suppression strategy.
Yangang SHI, Haiyong ZHU, Liwen LU, Yi LU, Defeng QIU, Yizhe LIN   +5 more
doaj   +1 more source

Exposed conductor detection of 10 kV distribution line based on improved YOLOv8

电力工程技术
Exposed conductors in 10 kV distribution line are one of the major causes with operational faults in distribution lines, continuously affecting the safe and stable operation of the distribution network. Traditional manual inspection methods often fail to
Qiwen JING, Sipeng HAO, Siyuan LI
doaj   +1 more source

Φ-OTDR disturbance localization of communication optical cable based on moving variance average and spectral subtraction

电力工程技术
To address the issue of low signal-to-noise ratio in disturbance localization on power communication optical cables caused by environmental noise in phase sensitive-optical time domain reflectometry (Φ-OTDR) systems, the Φ-OTDR localization technique is ...
Wei SHEN, Xin HU, Ze ZHANG, Ling JU, Jian WU, Yi HUANG   +5 more
doaj   +1 more source

Active frequency support control strategy for grid-forming direct-drive wind turbines

电力工程技术
A high proportion of wind power generation is integrated into the grid through power electronic devices，which lack the inertial response of traditional synchronous generators.
Zunzhu LIU, Zhijiang CHENG, Weiqing WANG, Beiduo SONG   +3 more
doaj   +1 more source

Analysis of frequency oscillation characteristics in grid-forming multi-VSG systems considering power coupling

电力工程技术
Grid-forming converters controlled by virtual synchronous generator （VSG） provide a certain amount of inertia and damping support for new energy sources to be connected to the grid.
Wei LI, Meiling MA, Weiqing SUN
doaj   +1 more source

Power loop modeling of grid-forming converter and the influence of difference on transient stability

电力工程技术
The grid-forming converter （GFM） is prone to transient instability，when a fault occurs in the power grid. At present，the research on voltage ride through control of GFM is comprehensive.
Ran DING, Yinchi SHAO, Yongkai LI, Yan HU, Yiming YAO, Jiaoxin JIA   +5 more
doaj   +1 more source