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About

Bernardo Silva completed the Integrated Master Degree in Electrical and Computer Engineering at FEUP, specializing in energy systems. In 2014 he completed his PhD in Sustainable Energy Systems at FEUP / MIT Portugal. Since joining INESCTEC in March 2009, he has been involved in scientific projects and consulting in the area of integration of renewable sources in the electrical system as well as in the steady state and dynamic analysis of electrical systems. Since 2016 Portuguese representative on the Committee B4 (HVDC) of Cigré. Awards: Honorable Mention - 2009 REN Award - with the thesis of Master Winner of the APREN 2016 Award with the PhD thesis.

Interest
Topics
Details

Details

  • Name

    Bernardo Silva
  • Cluster

    Power and Energy
  • Role

    Senior Researcher
  • Since

    15th April 2009
005
Publications

2018

Optimal bidding strategy for variable-speed pump storage in day-ahead and frequency restoration reserve markets

Authors
Filipe, J; Bessa, RJ; Moreira, C; Silva, B;

Publication
Energy Systems

Abstract

2017

Identification of Dynamic Simulation Models for Variable Speed Pumped Storage Power Plants

Authors
Moreira, C; Fulgencio, N; Silva, B; Nicolet, C; Beguin, A;

Publication
Journal of Physics: Conference Series

Abstract
This paper addresses the identification of reduced order models for variable speed pump-turbine plants, including the representation of the dynamic behaviour of the main components: hydraulic system, turbine governors, electromechanical equipment and power converters. A methodology for the identification of appropriated reduced order models both for turbine and pump operating modes is presented and discussed. The methodological approach consists of three main steps: 1) detailed pumped-storage power plant modelling in SIMSEN; 2) reduced order models identification and 3) specification of test conditions for performance evaluation. © Published under licence by IOP Publishing Ltd.

2017

Integration of Variable Speed Pumped Hydro Storage in Automatic Generation Control Systems

Authors
Fulgencio, N; Moreira, C; Silva, B;

Publication
Journal of Physics: Conference Series

Abstract
Pumped storage power (PSP) plants are expected to be an important player in modern electrical power systems when dealing with increasing shares of new renewable energies (NRE) such as solar or wind power. The massive penetration of NRE and consequent replacement of conventional synchronous units will significantly affect the controllability of the system. In order to evaluate the capability of variable speed PSP plants participation in the frequency restoration reserve (FRR) provision, taking into account the expected performance in terms of improved ramp response capability, a comparison with conventional hydro units is presented. In order to address this issue, a three area test network was considered, as well as the corresponding automatic generation control (AGC) systems, being responsible for re-dispatching the generation units to re-establish power interchange between areas as well as the system nominal frequency. The main issue under analysis in this paper is related to the benefits of the fast response of variable speed PSP with respect to its capability of providing fast power balancing in a control area. © Published under licence by IOP Publishing Ltd.

2017

On the Profitability of Variable Speed Pump-Storage-Power in Frequency Restoration Reserve

Authors
Filipe, J; Bessa, R; Moreira, C; Silva, B;

Publication
Journal of Physics: Conference Series

Abstract
The increase penetration of renewable energy sources (RES) into the European power system has introduced a significant amount of variability and uncertainty in the generation profiles raising the needs for ancillary services as well as other tools like demand response, improved generation forecasting techniques and changes to the market design. While RES is able to replace energy produced by the traditional centralized generation, it cannot displace its capacity in terms of ancillary services provided. Therefore, centralized generation capacity must be retained to perform this function leading to over-capacity issues and underutilisation of the assets. Large-scale reversible hydro power plants represent the majority of the storage solution installed in the power system. This technology comes with high investments costs, hence the constant search for methods to increase and diversify the sources of revenue. Traditional fixed speed pump storage units typically operate in the day-ahead market to perform price arbitrage and, in some specific cases, provide downward replacement reserve (RR). Variable speed pump storage can not only participate in RR but also contribute to FRR, given their ability to control its operating point in pumping mode. This work does an extended analysis of a complete bidding strategy for Pumped Storage Power, enhancing the economic advantages of variable speed pump units in comparison with fixed ones. © Published under licence by IOP Publishing Ltd.

2017

Role of pump hydro in electric power systems

Authors
Bessa, R; Moreira, C; Silva, B; Filipe, J; Fulgencio, N;

Publication
Journal of Physics: Conference Series

Abstract
This paper provides an overview of the expected role that variable speed hydro power plants can have in future electric power systems characterized by a massive integration of highly variable sources. Therefore, it is discussed the development of a methodology for optimising the operation of hydropower plants under increasing contribution from new renewable energy sources, addressing the participation of a hydropower plant with variable speed pumping in reserve markets. Complementarily, it is also discussed the active role variable speed generators can have in the provision of advanced frequency regulation services. © Published under licence by IOP Publishing Ltd.