CPES

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http://localhost:4000/handle/123456789/40
This service focuses its activities in areas such as regulation and electricity markets, integration of dispersed independent producers, technical and economic management of distribution systems, use of information technologies in regional energy planning, uncertainty and risk management.

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Browsing CPES by Author "4971"
  • Item
    An advanced platform for power system security assessment accounting for forecast uncertainties
    ( 2019) Ciapessoni,E ; Cirio,D ; Pitto,A ; Omont,N ; Leonel Magalhães Carvalho ; Vasconcelos,MH ; 3348 ; 4971
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    Optimal Power Flow Solution for Distribution Networks using Quadratically Constrained Programming and McCormick Relaxation Technique
    ( 2021) Mohammad Javadi ; Clara Sofia Gouveia ; Leonel Magalhães Carvalho ; Ricardo Silva ; 4971 ; 5524 ; 7343 ; 7760
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    Reactive power management considering stochastic optimization under the portuguese reactive power policy applied to der in distribution networks
    ( 2019) Tiago João Abreu ; Tiago André Soares ; Leonel Magalhães Carvalho ; Morais,H ; Simao,T ; Louro,M ; 4971 ; 6611 ; 7440
    Challenges in the coordination between the transmission system operator (TSO) and the distribution system operator (DSO) have risen continuously with the integration of distributed energy resources (DER). These technologies have the possibility to provide reactive power support for system operators. Considering the Portuguese reactive power policy as an example of the regulatory framework, this paper proposes a methodology for proactive reactive power management of the DSO using the renewable energy sources (RES) considering forecast uncertainty available in the distribution system. The proposed method applies a stochastic sequential alternative current (AC)-optimal power flow (SOPF) that returns trustworthy solutions for the DSO and optimizes the use of reactive power between the DSO and DER. The method is validated using a 37-bus distribution network considering real data. Results proved that the method improves the reactive power management by taking advantage of the full capabilities of the DER and by reducing the injection of reactive power by the TSO in the distribution network and, therefore, reducing losses. © 2019 by the authors.
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    Reactive power provision by the DSO to the TSO considering renewable energy sources uncertainty
    ( 2020) Tiago André Soares ; Leonel Magalhães Carvalho ; Moris,H ; Ricardo Jorge Bessa ; Tiago João Abreu ; Lambert,E ; 4882 ; 4971 ; 6611 ; 7440
    The current coordination between the transmission system operator (TSO) and the distribution system operator (DSO) is changing mainly due to the continuous integration of distributed energy resources (DER) in the distribution system. The DER technologies are able to provide reactive power services helping the DSOs and TSOs in the network operation. This paper follows this trend by proposing a methodology for the reactive power management by the DSO under renewable energy sources (RES) forecast uncertainty, allowing the DSO to coordinate and supply reactive power services to the TSO. The proposed methodology entails the use of a stochastic AC-OPF, ensuring reliable solutions for the DSO. RES forecast uncertainty is modeled by a set of probabilistic spatiotemporal trajectories. A 37-bus distribution grid considering realistic generation and consumption data is used to validate the proposed methodology. An important conclusion is that the methodology allows the DSO to leverage the DER full capabilities to provide a new service to the TSO.