Searched for: subject%3A%22optimal%255C+power%255C+flow%22
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Giraud, Bastien (author)
The transition to green energy is reshaping the energy landscape, marked by increased integration of renewable energy sources, distributed resources, and the electrification of other energy sectors. These changes challenge grid security, particularly regarding the N-1 security criterion, a crucial factor in preventing blackouts. Furthermore,...
master thesis 2023
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Vergara Barrios, P.P. (author), Giraldo, Juan S. (author), Salazar, Mauricio (author), Panda, Nanda Kishor (author), Nguyen, Phuong H. (author)
A photovoltaic (PV)-rich low-voltage (LV) distribution network poses a limit on the export power of PVs due to the voltage magnitude constraints. By defining a customer export limit, switching off the PV inverters can be avoided, and thus reducing power curtailment. Based on this, this paper proposes a mixed-integer nonlinear programming (MINLP)...
journal article 2023
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Serna Suarez, I.D. (author), Morales-Espana, G. (author), de Weerdt, M.M. (author), Carrillo-Caicedo, G. (author), Ordóñez-Plata, G. (author), Quiroga, O. A. (author)
The integration of Distributed Energy Resources (DERs) in distribution networks comes with challenges, like power quality concerns, but also opens up new opportunities, e.g., DERs can offer competitive energy prices for final users by leveraging time arbitrage. A suitable method to fully exploit such opportunities is to compute the optimal...
journal article 2023
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Vohra, Rushil (author), Rajaei, A. (author), Cremer, Jochen (author)
With the increasing penetration of renewable power sources such as wind and solar, accurate short-term, nowcasting renewable power prediction is becoming increasingly important. This paper investigates the multi-modal (MM) learning and end-to-end (E2E) learning for nowcasting renewable power as an intermediate to energy management systems. MM...
conference paper 2023
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Vohra, Rushil (author)
The growth of renewable energy technologies is leading to energy systems that are more reliant than ever on renewables such as Wind and Photovoltaic (PV) power. Despite their benefits in terms of sustainability, their ubiquity poses challenges in maintaining grid stability given their intermittency, emphasising the prediction of power...
master thesis 2022
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Bellizio, Federica (author), Cremer, Jochen (author), Strbac, Goran (author)
This paper proposes a method to compute corrective control actions for dynamic security in real-time and quantifies the economic value of corrective control. Lowered inertia requires fast control methods in real-time to correct system operation and maintain system security when equipment fails. However, using corrective control beyond such...
journal article 2022
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Papakyriakou, Thalis (author)
The DC Optimal Power Flow (DC-OPF) problem is a widely-studied topic in the field of power systems. A solution to the problem consists of minimizing the running costs of the power system, through defining the optimal operating state for each entity in the system, while adhering to a set of physical constraints. A lot of research has been...
master thesis 2021
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Markensteijn, A.S. (author)
Energy systems are vital in modern society, and reliable operation is crucial. Multi-carrier energy systems (MESs), which couple two or more single-carrier systems, have recently become more important, as the need for sustainable energy systems increases. Important tools for the design and operation of energy systems are steady-state simulation...
doctoral thesis 2021
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Giraldo, Juan S. (author), Vergara Barrios, P.P. (author), Lopez, Juan Camilo (author), Nguyen, Phuong H. (author), Paterakis, Nikolaos G. (author)
Linear optimal power flow (OPF) formulations are powerful tools applied to a large number of problems in power systems, e.g., economic dispatch, expansion planning, state estimation, congestion management, electricity markets, among others. This article proposes a novel mixed-integer linear programming formulation for the ac-OPF of three...
journal article 2021
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Najjar, Mohamed-Youssef (author)
The optimal power flow (OPF) problem is a classic and widely-studied topic in the field of power systems.Its purpose is to minimize the running costs of a power system by determining the optimal operating points,while respecting a set of physical constraints. While most power systems are currently controlled by a centralcoordinator, there is...
master thesis 2020
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Yağci, Caner (author)
Highly volatile nature of renewable energy sources (RES) has increased the demand for flexibility in electrical power systems. Electrification of the industry with power-to-X (PtX) technologies is one of the most promising ways to increase energy system flexibility since industry accounts for the largest share of the world’s total energy demand....
master thesis 2020
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Bai, J. (author), Neagu, A.C. (author)
The goal of this graduation project was to design a state-of-the-art central farm controller. The designed central farm controller distinguishes itself from prevailing controllers by including a subsystem (the optimisation unit) that contributes to an improvement in power transmission effciency, decrease in maintenance costs and an increase in...
bachelor thesis 2020
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Sereeter, B. (author)
During the normal operation, control and planning of the power system, grid operators employ numerous tools including the Power Flow (PF) and the Optimal Power Flow (OPF) computations to keep the balance in the power system. The solution of the PF computation is used to assess whether the power system can function properly for the given...
doctoral thesis 2020
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Maschio, Fulvio (author), Rasi Aoki, Alexandre (author), Cavalcante Siebert, L. (author)
To keep the balance between energy consumption and supply in the short-term, proper planning is needed, which is subject to contingencies that interfere with its dynamics. Major events in the Brazilian Interconnected System can lead to variations in frequency and voltage, and real-time operation centers must act quickly and effectively to avoid...
journal article 2020
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Lopes Parreira, Pedro (author)
Multiple solutions for solving optimal power flow (OPF) have been employed, most of them using a centralised approach. However, there is another approach where every node is responsible for the local problem in order to reach a solution: the decentralised optimal power flow (D-OPF). In this thesis, the aim was to improve the speed and...
master thesis 2019
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Khuntia, S.R. (author), Rueda, José L. (author), van der Meijden, M.A.M.M. (author)
Location of wind power plants and demand centres are not always close by; hence, the transmission of energy puts a burden on existing grid infrastructure. This unwanted burden necessitates transmission lines to operate more and more frequently close to their operating limits. To alleviate such situations, this research addresses the advantages...
journal article 2019
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Camilo Arevalo, Juan (author), Medina, Diego Rodriguez (author), Rodriguez, Sergio Raul Rivera (author), Rueda, José L. (author)
This paper concerns with the development of two new testbeds, the associated datasets, and the analysis of the results obtained by applying different heuristic optimization algorithms that participated in the 2018 panel and competition on”Emerging heuristic optimization algorithms for operational planning of sustainable electrical power...
journal article 2019
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Serna Suarez, I.D. (author), Carrillo-Caicedo, Gilberto (author), Morales-Espana, G. (author), de Weerdt, M.M. (author), Ordóñez-Plata, Gabriel (author)
The increase of solar photovoltaic penetration poses several challenges for distribution network operation, mainly because such high penetration might cause reliability problems like protection malfunctioning, accelerated decay of voltage regulators and voltage violations. Existing solutions based on mathematical programming solve a 3-phase...
journal article 2019
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Diwangkoro Muhammad Dolaputra, Dola (author)
There are many methods for solving an optimal power flow (OPF) problem. Most of them employ one central unit to solve the problem (centralized) while in others, every node/area computes for its coverage and send information to its neighbor(s) every time. The mentioned method is called Distributed OPF. In this thesis, the Distributed OPF aims for...
master thesis 2018
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Mackay, L.J. (author)
The traditional ac power system is challenged by emerging distributed renewable energy sources and an increase in installed load capacity, e.g., electric vehicles. Most of these new resources use inherently dc as do more and more appliances. This poses the question, if they should still be connected on ac in the low voltage grid, which was...
doctoral thesis 2018
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