Results 11 to 20 of about 161,250 (215)

Solution of the emergency control of synchronous generator modes based on the local measurements to ensure the dynamic stability

open access: yesIET Generation, Transmission & Distribution, 2023
Stochastic renewable sources of energy have been causing changes in the structure and operation of power systems. High penetration of this type of generation results in decreased inertia of a power system, increased active power fluctuations, and a ...
Mihail Senyuk   +4 more
doaj   +1 more source

Equal‐area criterion and analytical model for transient stability assessment of hybrid AC–DC transmission system using voltage sourced converter

open access: yesIET Renewable Power Generation, 2023
An analytical model for transient stability assessment of hybrid AC–DC transmission systems is formulated, implemented, and validated. The equal‐area criterion, as known from the transient stability analysis of AC power systems, is redeveloped for AC–DC ...
Peng Wang, Maren Kuschke, Kai Strunz
doaj   +1 more source

Transient Stability Assessment Using Individual Machine Equal Area Criterion PART III: Reference Machine

open access: yesIEEE Access, 2019
The analysis of the transient stability of a multimachine system via the use of a few machines is a promising technique for transient security assessment.
Songyan Wang, Jilai Yu, Wei Zhang
doaj   +1 more source

A Study on an Out-of-Step Detection Algorithm Using the Time Variation of Complex Power: Part I, Mathematical Modeling

open access: yesEnergies, 2020
Power quality and stability have become the most important issues in power system operations, Micro Grids, and Smart Grids. Sensitive equipment can be seriously damaged when exposed to unstable power swing conditions. An unstable system may cause serious
You-Jin Lee   +3 more
doaj   +1 more source

Transient Stability Assessment Using Individual Machine Equal Area Criterion Part II: Stability Margin

open access: yesIEEE Access, 2018
In the second part of this two-paper series, the stability margin of a critical machine and that of the system are first proposed, and then the concept of the nonglobal stability margin is illustrated.
Songyan Wang, Jilai Yu, Wei Zhang
doaj   +1 more source

A Study on the Out-of-Step Detection Algorithm Using Time Variation of Complex Power-Part II: Out-of-Step Detection Algorithm and Simulation Results

open access: yesEnergies, 2020
One of the established unstable power swing (out-of-step) detection algorithms in micro grid/smart grid power systems uses a trajectory of apparent impedance in the R-X plane. However, this algorithm is not suitable for fast out-of-step conditions and it
You-Jin Lee   +3 more
doaj   +1 more source

Influence of system inertia time constant on transient stability level of AC power grid

open access: yesElectronics Letters, 2023
Power system inertia is receiving increasing attention because the inclusion of renewable energy generation equipment weakens the inertia of the regional equivalent system and affects the transient stability of the system. In this paper, the influence of
Mingxing Tian   +3 more
doaj   +1 more source

On the issue of determining the main factors of gas hazard in coal mines of Ukraine [PDF]

open access: yesE3S Web of Conferences, 2021
The main sources of methane emission are located in the undermined coal-bearing strata, which is not taken into account by the requirements of regulatory documents when determining the category hazard of coal mines.
Filatiev Mykhailo   +4 more
doaj   +1 more source

Transient Stability Analysis of the Two-Area With AC/DC Paralleled Interconnected Power System in Different Operation

open access: yesFrontiers in Energy Research, 2021
In order to deeply explore the transient stability mechanism of the AC/DC hybrid system, this paper analyzes the rotor angle stability of the two-area AC/DC hybrid system.
Hongbo Liu   +4 more
doaj   +1 more source

A New Design Criterion to Improve the Intact Stability of Galician Small Fishing Vessels

open access: yesJournal of Marine Science and Engineering, 2020
The first technical factor involved in maritime accidents is related to the lack of intact stability. The current stability criterion, based on fixing a minimum value for each of the different static and dynamic righting arms, is not regarded as ...
Jesús Alvite-Castro   +4 more
doaj   +1 more source

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