126 citations · 457 across the 22 of their papers we have counts for
15 papers · 1 filter
Chance-Constrained AC Optimal Power Flow: Reformulations and Efficient Algorithms
Line Roald, Göran Andersson
Higher levels of renewable electricity generation increase uncertainty in power system operation. To ensure secure system operation, new tools that account for this uncertainty are…
Impact of Dynamic Line Rating on Dispatch Decisions and Integration of Variable RES Energy
Bolun Xu, Andreas Ulbig, Goran Andersson
Dynamic line rating (DLR) models the transmission capacity of overhead lines as a function of ambient conditions. It takes advantage of the physical thermal property of overhead li…
Fast and Reliable Primary Frequency Reserves From Refrigerators with Decentralized Stochastic Control
Evangelos Vrettos, Charalampos Ziras, Göran Andersson
Due to increasing shares of renewable energy sources, more frequency reserves are required to maintain power system stability. In this paper, we present a decentralized control sch…
Corrective Control to Handle Forecast Uncertainty: A Chance Constrained Optimal Power Flow
Line Roald, Sidhant Misra, Thilo Krause +1
Higher shares of electricity generation from renewable energy sources and market liberalization is increasing uncertainty in power systems operation. At the same time, operation is…
Experimental Demonstration of Frequency Regulation by Commercial Buildings - Part I: Modeling and Hierarchical Control Design
Evangelos Vrettos, Emre C. Kara, Jason MacDonald +2
This paper is the first part of a two-part series in which we present results from an experimental demonstration of frequency regulation in a commercial building test facility. In…
Experimental Demonstration of Frequency Regulation by Commercial Buildings - Part II: Results and Performance Evaluation
Evangelos Vrettos, Emre C. Kara, Jason MacDonald +2
This paper is the second part of a two-part series presenting the results from an experimental demonstration of frequency regulation in a commercial building test facility. In Part…
Chance Constrained Optimal Power Flow with Curtailment and Reserves from Wind Power Plants
Line Roald, Sidhant Misra, Michael Chertkov +2
Over the past years, the share of electricity production from wind power plants has increased to significant levels in several power systems across Europe and the United States. In…
Polyhedral Computation Based Transfer Capacities in Multi-Area Power Systems
Alexander Fuchs, Marc Scherer, Göran Andersson
This paper proposes a new methodology to maximize the feasible set of power injections and cross-border power transfers in meshed multi-area power systems. The approach used polyhe…
Security Constrained Optimal Power Flow with Distributionally Robust Chance Constraints
Line Roald, Frauke Oldewurtel, Bart Van Parys +1
The growing amount of fluctuating renewable infeeds and market liberalization increases uncertainty in power system operation. To capture the influence of fluctuations in operation…
Distributed Frequency Control through MTDC Transmission Systems
Martin Andreasson, Roger Wiget, Dimos V. Dimarogonas +2
In this paper we propose distributed dynamic controllers for sharing both frequency containment and restoration reserves of asynchronous AC systems connected through a multi-termin…
Coordinated Frequency Control through MTDC Transmission Systems
Martin Andreasson, Roger Wiget, Dimos V. Dimarogonas +2
In this paper we propose a distributed dynamic controller for sharing frequency control reserves of asynchronous AC systems connected through a multi-terminal HVDC (MTDC) grid. We…
Robust Corrective Control Measures in Power Systems with Dynamic Line Rating
Matthias A. Bucher, Göran Andersson
Dynamic Thermal Line Rating (DLR) is deemed to be an effective way to increase transmission capacities and therefore enabling additional operational flexibility. The transmission c…
Distributed Primary Frequency Control through Multi-Terminal HVDC Transmission Systems
Martin Andreasson, Roger Wiget, Dimos V. Dimarogonas +2
This paper presents a decentralized controller for sharing primary AC frequency control reserves through a multi-terminal HVDC grid. By using Lyapunov arguments, the proposed contr…
Analyzing Operational Flexibility of Power Systems
Andreas Ulbig, Göran Andersson
Operational flexibility is an important property of electric power systems and plays a crucial role for the transition of today's power systems, many of them based on fossil fuels,…
Impact of Low Rotational Inertia on Power System Stability and Operation
Andreas Ulbig, Theodor S. Borsche, Göran Andersson
Large-scale deployment of RES has led to significant generation shares of variable RES in power systems worldwide. RES units, notably inverter-connected wind turbines and PV that a…