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Detalhes

Detalhes

  • Nome

    Sérgio Santos
  • Cluster

    Energia
  • Cargo

    Investigador Auxiliar
  • Desde

    01 maio 2019
001
Publicações

2020

Multi Flexibility Options Integration to Cope with Large-Scale Integration of Renewables

Autores
Cruz, MRM; Fitiwi, DZ; Santos, SF; Mariano, SJPS; Catalao, JPS;

Publicação
IEEE Transactions on Sustainable Energy

Abstract
Conventional electrical networks are slowly changing. A strong sense of policy urge as well as commitments have recently been surfacing in many countries to integrate more environmentally friendly energy sources into electrical systems. In particular, stern efforts have been made to integrate more and more solar and wind energy sources. One of the major setbacks of such resources arises as a result of their intermittent nature, creating several problems in the electrical systems from a technical, market, operation and planning perspectives. This work focuses on the operation of an electrical system with large-scale integration of solar and wind power. In order to cope with the intermittency inherent to such power sources, it is necessary to introduce more flexibility into the system. In this context, Demand Response, Energy Storage Systems and Dynamic Reconfiguration of the system are introduced and the operational performance of the resulting system is thoroughly analyzed. To carry out the required analysis, a stochastic MILP operational model is developed, whose efficacy is tested on an IEEE 119-bus standard network system. Numerical results indicate that the joint integration of various flexibility mechanisms into the system can support a seamless integration of large-scale intermittent renewable energies. IEEE

2020

Prosumer flexibility: A comprehensive state-of-the-art review and scientometric analysis

Autores
Gough, M; Santos, SF; Javadi, M; Castro, R; Catalao, JPS;

Publicação
Energies

Abstract
There is a growing need for increased flexibility in modern power systems. Traditionally, this flexibility has been provided by supply-side technologies. There has been an increase in the research surrounding flexibility services provided by demand-side actors and technologies, especially flexibility services provided by prosumers (those customers who both produce and consume electricity). This work gathers 1183 peer-reviewed journal articles concerning the topic and uses them to identify the current state of the art. This body of literature was analysed with two leading textual and scientometric analysis tools, SAS Visual Text Analytics and VOSviewer, in order to provide a detailed understanding of the current state-of-the-art research on prosumer flexibility. Trends, key ideas, opportunities and challenges were identified and discussed. © 2020 by the authors.

2019

Impact of Strategic Behaviors of the Electricity Consumers on Power System Reliability

Autores
Gazafroudi, AS; Shafie Khah, M; Fitiwi, DZ; Santos, SF; Corchado, JM; Catalão, JPS;

Publicação
Studies in Systems, Decision and Control - Sustainable Interdependent Networks II

Abstract

2019

Optimal Spinning Reserve Allocation in Presence of Electrical Storage and Renewable Energy Sources

Autores
Javadi, MS; Lotfi, M; Gough, M; Nezhad, AE; Santos, SF; Catalao, JPS;

Publicação
2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)

Abstract

2019

Stochastic Security Constrained Unit Commitment with High Penetration of Wind Farms

Autores
Kia, M; Hosseini, SH; Heidari, A; Lotfi, M; Catalao, JPS; Shafie khah, M; Osorio, G; Santos, SF;

Publicação
Proceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019

Abstract
Secure and reliable operation is one of the main challenges in restructured power systems. Wind energy has been gaining increasing global attention as a clean and economic energy source, despite the operational challenges its intermittency brings. In this study, we present a formulation for electricity and reserve market clearance in the presence of wind farms. Uncertainties associated with generation and line outages are modeled as different system scenarios. The formulation incorporates the cost of different scenarios in a two-stage short-term (24-hours) clearing process, also considering different types of reserve. The model is then linearized in order to be compatible with standard mixed-integer linear programming solvers, aiming at solving the security constrained unit-commitment problem using as few variables and optimization constraints as possible. As shown, this will expedite the solution of the optimization problem. The model is validated by testing it on a case study based on the IEEE RTS1, for which results are presented and discussed. © 2019 IEEE.