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About

About

J. T. Saraiva was born in Porto, Portugal, in 1962 and got his MSc, PhD, and Agregado degrees in Electrical and Computer Engineering from FEUP in 1987, 1993 and 2002, where he is currently Professor. In 1985 he joined INESC Porto where he is head researcher and collaborated in several EU financed projects, in national funded projects and in several consultancy contracts with the Portuguese Electricity Regulatory Agency, with EDP Distribuição, EDP Produção, REN, Empresa de Electricidade da Madeira, Empresa de Electricidade dos Açores and with the Greek and the Brasilean Transmission System Operators. Along his Academic career he supervized more than 50 MSc Thesis and 10 PhD Thesis, co authored 3 books, more than 30 papers in international journals and more than 120 papers in International Conferences.

Interest
Topics
Details

Details

  • Name

    João Tomé Saraiva
  • Cluster

    Power and Energy
  • Role

    Area Manager
  • Since

    15th July 1985
008
Publications

2018

Technical-economic analysis for the integration of PV systems in Brazil considering policy and regulatory issues

Authors
Vilaca Gomes, PV; Knak Neto, NK; Carvalho, L; Sumaili, J; Saraiva, JT; Dias, BH; Miranda, V; Souza, SM;

Publication
Energy Policy

Abstract

2018

Simultaneous co-integration of multiple electrical storage applications in a consumer setting

Authors
Metz, D; Saraiva, JT;

Publication
Energy

Abstract
In a consumer setting, storage systems can be dispatched in order to shift surplus generation to periods when a local generation deficit exists. However, the high investment cost still makes the deployment of storage unattractive. As a way to overcome this problem existing literature looking at storage installed at the grid-level suggests dispatching the storage device for multiple applications simultaneously in order to access several value streams. Therefore, in this work, a Mixed Integer Linear Program is developed in order to schedule the operation of a storage device in a consumer context for multiple objectives in parallel. Besides shifting locally generated energy in time, the peak demand seen by the electric grid is reduced and the storage device is operated to provide primary reserve control. The model is applied in a case study based on the current German situation in order to illustrate the value contribution of stacking multiple services. When pursuing multiple applications simultaneously, the revenues of storage can be increased significantly. However, the revenues are not additive due to conflicting operations which originates a revenue gap as illustrated in the paper. © 2017 Elsevier Ltd

2018

A novel efficient method for multiyear multiobjective dynamic transmission system planning

Authors
Vilaca Gomes, PV; Saraiva, JT;

Publication
International Journal of Electrical Power & Energy Systems

Abstract

2018

Use of battery storage systems for price arbitrage operations in the 15-and 60-min German intraday markets

Authors
Metz, D; Saraiva, JT;

Publication
ELECTRIC POWER SYSTEMS RESEARCH

Abstract
Over the last few years, electrical storage and especially battery systems have seen a strong rise in interest. In several countries, as for instance in Germany, lithium-ion batteries are now commonly deployed in end-consumer installations to shift local generation from photovoltaic systems in time. A further application for storage is price arbitrage, which corresponds to an operation strategy benefitting from price differentials. In this work, we describe a Mixed Integer Problem to optimize the storage dispatch considering both the 15- and the 60-min auctions in use in Germany. Furthermore, in addition to the calendric lifetime, the limitation to a certain number of cycles is considered in the evaluation. Last, it was conducted a sensitivity analysis to identify the price volatility level that is required to generate a profit from arbitrage operations. Therefore, a market price process with adjustable parameters has been implemented.

2018

Impact of Large Fleets of Plug-in-Electric Vehicles on Transmission Systems Expansion Planning

Authors
Vilaca Gomes, PV; Saraiva, JT; Coelho, MDP; Dias, BH; Willer, L; Junior, AC;

Publication
2018 POWER SYSTEMS COMPUTATION CONFERENCE (PSCC)

Abstract
Electric vehicles will certainly play an important and increasing role in the transport sector over the next years. As their number grows, they will affect the behavior of the electricity demand seen not only by distribution but also by transmission networks and so changes will also occur in the operation and expansion planning of the power systems. In this sense, this paper addresses the impact of large fleets of Plug-in-Electric Vehicles (PEVs) in transmission equipment investments. The developed model uses evolutionary particle swarm optimization (EPSO) to handle the planning problem over different scenarios regarding the evolution of PEVs and their impact on the demand. These scenarios consider the PEVs penetration level, the availability of charging and the related charging policies. The paper includes a Case Study based on the IEEE 24 busbar power system model for a 10-year period. The model uses an AC Optimal Power Flow to analyse the operation of the system for different investment paths over the years and the results show that coordinating the charging of PEVs can be an interesting solution to postpone the investments in transmission equipment thus reducing the associated costs.

Supervised
thesis

2017

Comportamento dos Preços do MIBEL Tendo em Conta Cenários de Crescimento do Número de Veículos Elétricos

Author
António José Mendes Cruz de Sousa

Institution
UP-FEUP

2017

Deteção e caracterização de perturbações de preços de mercado com base em sistemas imunológicos artificiais

Author
Eduardo Fernando Nogueira Rodrigues da Rocha

Institution
UP-FEUP

2017

Análise dos Resultados do Mercado Ibérico de Eletricidade no ano de 2016

Author
Francisco Manuel Silva Leite Santos Brandão

Institution
UP-FEUP

2017

Teoria do Caos aplicada à previsão de preços

Author
Joana Sofia Alves Lopes

Institution
UP-FEUP

2017

Avaliação do Impacto de Transferências de Carga entre Horas Adjacentes na Função de Benefício Social do Mercado Diário do MIBEL

Author
Pedro Tiago Lourenço Pinto

Institution
UP-FEUP