Search Results for author: Ognjen Stanojev

Found 8 papers, 0 papers with code

A Stiffness-Oriented Model Order Reduction Method for Low-Inertia Power Systems

no code implementations16 Oct 2023 Simon Muntwiler, Ognjen Stanojev, Andrea Zanelli, Gabriela Hug, Melanie N. Zeilinger

The fast modes are then truncated in the rotated coordinate system to obtain a lower-order model with reduced stiffness.

Privacy-Preserving Distributed Market Mechanism for Active Distribution Networks

no code implementations30 Sep 2023 Matthias Franke, Ognjen Stanojev, Lesia Mitridati, Gabriela Hug

Amidst the worldwide efforts to decarbonize power networks, Local Electricity Markets (LEMs) in distribution networks are gaining importance due to the increased adoption of renewable energy sources and prosumers.

Distributed Optimization Privacy Preserving

Safe Reinforcement Learning for Strategic Bidding of Virtual Power Plants in Day-Ahead Markets

no code implementations11 Jul 2023 Ognjen Stanojev, Lesia Mitridati, Riccardo de Nardis di Prata, Gabriela Hug

This paper presents a novel safe reinforcement learning algorithm for strategic bidding of Virtual Power Plants (VPPs) in day-ahead electricity markets.

Safe Reinforcement Learning

Tractable Identification of Electric Distribution Networks

no code implementations4 Apr 2023 Ognjen Stanojev, Lucien Werner, Steven Low, Gabriela Hug

In the first method, we use the eigendecomposition of the admittance matrix to generalize the notion of stationarity to electrical signals and demonstrate how the stationarity property can be used to facilitate a maximum a posteriori estimation procedure.

Computational Efficiency

Fast Mapping of Flexibility Regions at TSO-DSO Interfaces under Uncertainty

no code implementations18 May 2022 Alice Patig, Ognjen Stanojev, Petros Aristidou, Aristides Kiprakis, Gabriela Hug

The gradual decommissioning of fossil fuel-driven power plants, that traditionally provide most operational flexibility in power systems, has led to more frequent grid stability issues.

Online Feedback Droop Scheduling in Distribution Grids for Frequency and Local Voltage Control

no code implementations6 Apr 2022 Ognjen Stanojev, Yi Guo, Gabriela Hug

This paper presents a novel framework for collective control of Distributed Energy Resources (DERs) in active Distribution Networks (DNs).

Scheduling

Multiple Ancillary Services Provision by Distributed Energy Resources in Active Distribution Networks

no code implementations18 Feb 2022 Ognjen Stanojev, Yi Guo, Petros Aristidou, Gabriela Hug

The electric power system is currently experiencing radical changes stemming from the increasing share of renewable energy resources and the consequent decommissioning of conventional power plants based on synchronous generators.

Improving Stability of Low-Inertia Systems using Virtual Induction Machine Synchronization for Grid-Following Converters

no code implementations11 Oct 2021 Ognjen Stanojev, Uros Markovic, Petros Aristidou, Gabriela Hug

This paper presents a novel strategy for the synchronization of grid-following Voltage Source Converters (VSCs) in power systems with low rotational inertia.

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