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Found 14 papers, 0 papers with code
An Effective Methodology for Short-Circuit Calculation of Power Systems Dominated by Power Electronics Converters Considering Unbalanced Voltage Conditions and Converter Limits
A novel methodology has been presented to identify short-circuit equilibrium point of the studied system considering the operation and limitations of power converters.
Grid-Forming Loads: Can the loads be in charge of forming the grid in modern power systems?
In this sense, the new concept allows running a system powered only by renewables operating at maximum power (or operator defined set-point) in grid-following mode, while the overall system control is ubicated in the demand side.
An Observer-Based Composite Identifier for Online Estimation of the Thevenin Equivalent Parameters of a Power System
We consider a Th\'evenin equivalent circuit capturing the dynamics of a power grid as seen from the point of common coupling with a power electronic converter, and provide a solution to the problem of online identification of the corresponding circuit parameters.
An Almost Globally Stable Adaptive Phase-Locked Loop for Synchronization of a Grid-Connected Voltage Source Converter
In this paper we are interested in the problem of adaptive synchronization of a voltage source converter with a possibly weak grid with unknown angle and frequency, but knowledge of its parameters.
Passivity-based design and analysis of phase-locked loops
We consider a grid-connected voltage source converter (VSC) and address the problem of estimating the grid angle and frequency, information that is essential for an appropriate operation of the converter.
Phasor Modelling Approaches and Simulation Guidelines of Voltage-Source Converters in Grid-Integration Studies
This paper reviews Voltage-Source Converters (VSCs) EMT and Phasor models currently used to simulate converter-interfaced generation (CIG) and renewable energy resources integration to power systems.
Modelling and Simulation of Power Systems with Grid-Connected Converters in OpenModelica
This paper analyses the capabilities of the OpenModelica environment to perform electromagnetic transient (EMT) type simulations of power transmission systems with grid-connected converters.
Definition of scenarios for modern power systems with a high renewable energy share
Recent environmental policies have led many academic, industrial and governmental stakeholders to design and plan scenarios with very high share of renewable energy sources (RES).
Modelling Approaches of Power Systems Considering Grid-Connected Converters and Renewable Generation Dynamics
This paper presents a comparative analysis of several modelling approaches of key elements used in simulations of power systems with renewable energy sources.
Stability Assessment for Multi-Infeed Grid-Connected VSCs Modeled in the Admittance Matrix Form
The present work addresses this issue by proposing a simple criterion to assess the stability of large power systems with high-penetration of power converters.
Analytic estimation of the MMC sub-module capacitor voltage ripple for balanced and unbalanced AC grid conditions
In this paper, a mathematical expression to define the maximum and minimum voltage ripples of the modular multilevel converter (MMC) sub-module (SM) capacitors is proposed.
Data-driven Small-signal Modeling for Converter-based Power Systems
This article details a complete procedure to derive a data-driven small-signal-based model useful to perform converter-based power system related studies.
Dual-port grid-forming control of MMCs and its applications to grids of grids
Finally, we provide an in-depth discussion and comparison of single-port GFM control and the proposed dual-port GFM controls.
Improved current reference calculation for MMCs interal energy balancing control
The paper addresses an improved inner current reference calculation to be employed in the control of modular multilevel converters operating during either balanced or unbalanced conditions.
