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Power and Energy Systems

The centre is a world reference in large-scale integration of Distributed Energy Resources. Our expertise led us to take on key roles in important EU projects and also led to contracts for development and consultancy with manufacturing equipment companies and with power generation, transmission and distribution companies, regulators, government agencies and investors in Europe, South America, the United States of America and Africa.

At CPES, we address the following main research areas: Decision Making, Optimisation and Computational Intelligence, Forecasting, Static and Dynamic analysis of Energy Grids, Reliability, Power Electronics.

Part of our activity is developed in the Laboratory of Smart Grids and Electric Vehicles that supports the validation of major developments in a real environment.

Over the last years, we have made several developments in the electrical network planning and operation, namely the inclusion of distributed energy resources forecasting and network  optimisation tools embedded in different voltage layers, exploiting the MicroGrid hierarchical concept. Relevant steps were given on the inclusion of computational intelligence in control algorithms that were demonstrated under real conditions in several pilots.   

Latest News
Power and Energy

INESC TEC participates in the European Utility Week 18 for the first time

INESC TEC participated for the first time, with its own stand, in the largest European event of the power system sector, the European Utility Week (EUW) 2018, which took place in Vienna (Austria) from 6 to 8 November. 

05th December 2018

Power and Energy

INESC TEC joins European roadshow in order to promote energy efficiency

“Spend less on energy and more on yourself” – was the motto of the energy efficiency roadshow, promoted by the European Commission to which INESC TEC was associated.

20th November 2018

Power and Energy

INESC TEC researcher wins second place of the REN Prize

Pedro Beires, collaborator of INESC TEC’s Centre for Power and Energy Systems (CPES) was awarded second place in the 2018 edition of the REN Prize, which distinguishes the best Master's theses in the fields of Engineering, Economy, Mathematics, Physics, Chemistry, Information Systems and Computing.

15th November 2018

Power and Energy

INESC TEC develops tools for french transmission system operator

The Itesla_IPST project, which aimed to stimulate the quality of the uncertainty models that have been developed by the French transmission system operator, RTE, in order to assess the in real-time security of its electrical system, has come to an end.

09th November 2018

Power and Energy

INESC TEC’s researcher nominated Editor in international industrial engineering journal

João Catalão, researcher of INESC TEC’s Centre for Power and Energy Systems (CPES) and Professor of the Department of Electrical and Computer Engineering of the Faculty of Engineering of the University of Porto (FEUP) was recently nominated Associate Editor of the IEEE Transactions on Industrial Informatics (TII) journal.

11th October 2018

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Interest Topics
142

Featured Projects

UNiTED

Ferramentas computacionais inovadoras para otimização da procura de energia beneficiando utilizadores e rede de distribuição

2018-2021

Farad2

Programa avançado de energia: eletricidade e parque eólico

2018-2018

LowCarbon

Análise da estabilidade de tensão e comportamento do sistema elétrico de Portugal em cenários sem a presença das centrais térmicas de Sines e do Pêgo (carvão)

2018-2018

GEST_STORAGE

Análise de estratégias de gestão de sistemas de armazenamento para apoio à operação da rede de distribuição

2018-2019

Forescast2Mex

Hybrid forecasting methods for power generation from solar and wind energy

2018-2021

fof.PLAN

Energy Investment Planning using DER-CAM for IKEA Industry in Portugal

2018-2018

AO_Perdas

Consultoria para redução de perdas técnicas na empresa nacional de distribuição de electricidade (ENDE)

2018-2018

EstinvestQoS

Estimação do impacto dos cenários de investimento na qualidade de serviço, na eficiência da rede, na eficiência operacional e no acesso a novos serviços

2017-2018

Prob2

Implementação de procedimentos para estimação do valor dos investimentos obrigatórios

2017-2018

EU-SysFlex

Pan-European system with an efficient coordinated use of flexibilities for the integration of a large share of RES

2017-2021

FEEdBACk

Fostering Energy Efficiency and BehAvioural Change through ICT

2017-2020

TDX-ASSIST

Coordination of Transmission and Distribution data eXchanges for renewables integration in the European marketplace through Advanced, Scalable and Secure ICT Systems and Tools

2017-2020

MIBEL

Impacto dos veículos eléctricos no sistema eléctrico nacional e nos preços do MIBEL

2017-2018

SGEVL

SGEVL - Laboratório de Redes Elétricas Inteligentes e Veículos Elétricos

2017-2020

Itesla_IPST

Research Collaboration Agreement following the iTesla Project

2017-2018

SOLAR4DR

Previsão da Produção Solar

2017-2018

Med_TSO

The Mediterranean Project Med-TSO

2017-2018

IMPACT_AUTOCONSUMO

Estudo do impacto do autoconsumo, incluindo armazenamento, a nivel nacional.

2017-2017

ESGRIDS

Enhancing smart GRIDs for sustainability

2017-2019

InteGrid

Demonstration of INTElligent grid technologies for renewables INTEgration and INTEractive consumer participation enabling INTEroperable market solutions and INTErconnected stakeholders

2017-2020

FARad

formação avançada sobre gestão de sistema elétrico

2017-2017

eeseiM

Estudos de expansão do sistema eletroprodutor da ilha da Madeira

2017-2017

VOS

Validation of Optimized Solutions (VOS)

2017-2017

NEXTSTEP

NEXT distribution SubsTation improvEd Platform

2016-2019

Generation_RAM

Prestação de serviços de consutoria especializada com vista à definição de condições técnicas para a ligação de unidades geradores de eletricidade às redes eletricas da Região Autónoma da Madeira

2016-2018

Graciosa

Follow-up and Evaluation of Site Acceptance Tests and Simulations Studies

2016-2018

Perfis_Perdas_2017

Determinação de Perfis de Perdas e de Fatores de Ajustamento para Perdas para 2017

2016-2017

INDuGRID

Efficient energy management in industrial microgrids with high penetration of PV technology - INDuGRID

2016-2019

STABLING

Siemens Islanded Systems

2016-2017

PANACea

Perfis para Anomalias Consumo

2016-2018

Wind_curteil_soft

Desenvolvimento de uma aplicação Informática que quantifique os ressarcimentos por cortes na produção dos parques eólicos durante a gestão do sistema elétrico da Ilha Terceira

2016-2017

StatProbWind

Development of statistical methods for day ahead probabilistic wind power forecast

2016-2017

Automacao_PST

Identificação de novas soluções para a automação,proteção e telecomando das redes de Média Tensão

2016-2017

MORA

Model for Operational Reserve Adequacy

2016-2018

INFUSE

INFUSE - Information fusion for state estimation under classical and distributed architectures

2016-2019

REStable

Improvement of Renewables-based System Services Through Better Interaction of European Control Zones

2016-2019

GReSBAS

Grid Responsive Society Through Building Automation Systems

2016-2019

SmartGuide

Planning Guidelines, Smart Grid, Smart Market, Demand Response, Operation Guidelines, European Smart Distribution Systems

2016-2019

Smares

Smart Energy-Storing Modular Technology with advanced Energy Management System for Renewable Energy Systems - SMARES

2016-2018

ADMS4LV

Advanced DMS for low voltage networks

2016-2018

Hidrica_reversivel

Estudos de dimensionamento de centrais hidrícas reversíveis para as ilhas de São Miguel e terceira, Açores

2016-2018

Tarif_Dinam_Madeira

Plano de implementação de projetos-piloto de tarifas dinâmicas na Ilha da Madeira

2016-2018

CORAL-TOOLS-1

CORAL – Sustainable Ocean Exploitation: Tools and Sensors

2016-2018

Automacao_Faial

identificação e especificação de novas soluções de automação e comando, nomeadamente reconfiguração automática da rede elétrica de MT da ilha do Faial

2016-2018

Cidade_sustentavel

Urban data driven models for creative and resourceful urban transitions

2016-2018

SACC

Optimização da Arquitectura dos Sistemas de Alimentação em Corrente Contínua

2016-2018

Tarif_Dinam_Acores

Plano de implementação de projetos-piloto de tarifas dinâmicas nos Açores

2015-2018

BIOGAS

Estudo do comportamento dinâmico da rede elétrica da ilha de são Miguel perante a integração de um sistema de aproveitamento energético de Biogás

2015-2016

ReservaProb

Módulo de software de ajuda à fixação da reserva do Sistema Elétrico Nacional (SEM)

2015-2016

Segur_Abast_Madeira

Avaliação da segurança de abastecimento dos sistemas eletroprodutores da EEM na ilha da madeira e Porto Santo

2015-2016

Estim_Invest_Dist

Estimação do impacto dos cenários de investimento na qualidade do serviço, na eficiência da rede e na eficiência operacional

2015-2017

Terceira_Renov

Estudo para integração de novos centros produtores no sistem elétrico da ilha Terceira

2015-2016

iMAN

iMAN - Intelligence for advanced Manufacturing systems

2015-2018

CVE

Estudos de Integração de Novos Centros Produtores no Sistema Elétrico da Ilha Terceira considerando Novos Cenários de Geração e Consumo

2015-2015

CP_T_Dinamicas

Studies on the adequacy of implementing Dynamic Tariffs for network access

2015-2018

SusCity

SusC ity: Urban data driven models for creative and resourceful urban transitions

2015-2018

SENSIBLE

Storage-Enabled Sustainable Energy for Buildings and Communities

2015-2018

UPGRID

Real proven solutions to enable active demand and distributed generation flexible integration, through a fully controllable LOW Voltage and medium voltage distribution grid

2015-2018

AnyPLACE

Adaptable Platform for Active Services Exchange

2015-2018

SmarterEMC2

Smarter Grid: Empowering SG Market Actors through Information and Communication Technologies

2015-2018

Prev_PRE

Módulo de software para gerar previsões probabilísticas da Produção em Regime Especial (PRE) nacional

2014-2015

Ruanda_Solar

Integration of a photovoltaic power plant in Rwanda's power system

2014-2015

Perfis_Perdas_2015

Definition of Loss Profiles for 2015

2014-2015

OTGEN

Energy storage technologies for the power sector

2014-2015

3Phase

Unbalanced 3-PHAse State Estimator for distribution networks considering distributed energy resources

2014-2015

Madeirarenov_2014

Studies on the power system of the island of Madeira

2014-2016

PrevSol

Solar power forecast modules

2014-2015

EleCtra

European Liaison on Electricity Committed Towards long-term Research Activities for Smart Grids

2013-2018

SECRETS

Sustainable Energy Clusters REalized Through Smart Grids

2013-2018

ModPrev

Forecast models for wind park production

2013-2014

evolvDSO

Methodologies and tools for new and evolving DSO roles for efficient DRES integration in distribution networks

2013-2016

Hyperbole

HYdropower plants PERformance and flexiBle Operation towards Lean integration of new renewable Energies

2013-2017

Comute-DC

Control and operation of multi-terminal HVDC links in off-shore wind parks

2013-2015

Prev_Agreg

System to forecast the agreggated wind power

2013-2015

SuSTAINABLE

Smart Distribution System Operation for MAximizing the INtegration of RenewABLE Generation

2013-2016

SmartGrids

Smart Grids

2013-2015

Predict_EV

Mobile Sensing and Reliable Prediction of Electric Vehicle Charging in Smart Grids

2013-2013

IB_FALCAO

Technical solution to guarantee the adequacy requirements of the Chão Falcão wind park

2012-2013

STABALID

STAtionary BAtteries LI-ion safe Deployment

2012-2015

SCADA-BT

Development of a control and management system for smart LV distribution networks

2012-2015

PERFIS_Perdas2013

Determining loss profiles and adjustment factors for power losses in 2013

2012-2012

TSO-ESTRATEGIA

Strategic plan for R&D activities at transmission level

2012-2013

MEECORD

Efficient Methodology for the Coordination of Directional Over-current Relays in Meshed Electrical Networks

2012-2014

EFA-Icharge

Advanced Smart charging systems for EV management

2012-2014

PROB

Estimating mandatory investments in electricity distribution networks

2012-2016

Map_medidas

Mapping Measurements in Circuit-breakers

2012-2013

PowerFlow

Power Flow calculation according to Voltage Level

2012-2013

iTESLA

Innovative Tools for Electrical System Security within Large Areas

2012-2016

RESERP

Recommendations for a Sustainable Strategy for Renewables and Energy efficiency in Portugal

2012-2012

EnerGeo

Plartform to Support the Innovation and Communication Network for Energy and Geology

2011-2013

PerfisConsumo2012

Updating consumption profiles and creating a Reference Diagram for the grid in 2012

2011-2012

CitInES

Design of a Decision support tool for sustainable, reliable and cost-effective energy strategies in cities and industrial complexes

2011-2014

AEAI_LOAD

Technical Assistance Training in Load Research in Bosnia and Herzegovina

2011-2013

ACORES_VB

Studies to evaluate the possibility of increasing wind power penetration in the system of Terceira Island in Azores

2011-2012

EEM_RENOV

Dynamic behaviour assessments in scenarios with a strong integration of renewable energies in the Island of Madeira

2011-2012

Perfis_Perdas2012

Consolidating loss factors and adjustment factors for energy losses in 2012

2011-2011

EDP_FradesII

Assessment of the control solution adopted for variable speed reversible hydro units in Frades

2011-2012

ONS-EOLICA

Roadmap about Wind Power Forecasting - Consultancy for the Independent System Operator of Brazil

2011-2013

SMAGIS

A Smart Energy Grid Integration System configuration of an Energy Storage System in the presence of RES Microgeneration, EDVs and Polygeneration

2011-2014

EDA-RENOV

Evaluation of the impact from an increase in renewable energy generation in the Islands of S.Miguel and Flores

2011-2013

REN_FACTS

Transient Stability and Voltage Control Studies for the Portuguese Transmission Network in 2014

2011-2013

Perfis_Consumo2011

Updating consumption profiles and creating a Reference Diagram for the grid in 2011

2011-2011

MicroGrids+EV

Identification of Strategies to Control and Manage Microgrids with Electric Vehicles

2011-2014

LASCA

Large Scale Computing with Autoencoders - Application to Power Systems

2011-2013

SIMULESP

Expert system to support network operator on real time decision

2011-2015

DYMONDS

Intelligent Distribution Systems supported in Monitoring and Dynamic Decision

2010-2014

Ampla

Geographic Information System applied to Renewable Sources Survey in Rio de Janeiro

2010-2011

DOPF-Efacec

Distribution Optimal Power Flow

2010-2013

Vvar-Efacec

Voltage / Volt-Amp-Reacrive Control

2010-2013

EDP-Transf

Identification of the generation that can be transferred between balancing areas of the Portuguese Generation/Transmission system

2010-2011

SIAC-EE

Action plan for renewable energies and energy efficiency in the shoe industry

2010-2011

InovGrid2

Advanced management functionalities to support distribution network operation exploiting a Smart Metering infraestructure

2010-2011

PerfisPerdas2011

Definition of loss profiles and adjustment profiles for 2011

2010-2010

PPC

Specification of the architecture, SCADA and DMS functions and telecommunication requirements for the Control Centers of 32 non interconnected Greek Islands

2010-2011

GEMS

Gross Errors and Missing Signals - New concepts in Power System State Estimation

2010-2012

TWENTIES

Transmission system operation with large penetration of wind and other renewable Electricity sources in Networks by means of innovative Tools and Integrated Energy Solutions

2010-2013

PerfisMicro

Microgeneration profiling

2010-2010

REIVE

Intelligent electric networks with plug-in electric vehicles

2010-2012

MERGE

Mobile Energy Resoures for Grids of Electricity

2010-2011

EEM-Expansao

Planning the expansion of the energy transmission networks in Madeira

2010-2010

EEM-Dinamica

Characterization of the Dynamic Behavior of the Madeira and Porto Santo Islands Regarding a Large Scale Integration of Renewable Energy Sources

2009-2011

UPInvest

Energy Efficiency Plan in Buildings of the University of Porto

2009-2010

SRBEnergy

Technological assessment on thermosolar technology

2009-2009

ASIRP

Analysis and selection of investments to reduce losses in the distribution system

2009-2012

GreenIsland

Power demand estimation and power system impacts resulting of fleet penetration of electric/plug-in vehicles

2009-2012

JRC-RES

Impact of Large Renewable Deployment on European Electricity Higher Voltage Systems

2009-2010

WPI-GALPVenez

Analysis of the integration of wind power in electric grids in Venezuela

2009-2010

Argos

Wind power forecasting system

2008-2012

Parafuzzy

Fuzzy state estimation functions for online network analysis using paraconsistent logic

2008-2015

Eneop2

Methodology for loss allocation in a common grid connection infrastructure in multiple wind farms

2008-2010

InovGrid

Advanced metering systems capable of supporting the commercial and technical management of the distribution networks

2008-2011

Plasm

Platforms for electricity market simulation: metrics, analysis and model validation

2007-2010

REN-RECEP

Methodologies to determine the National Distribution Network's capacity to receive power

2007-2014

RAVE-MAT

Analysis of Electric Power Supply MAT solutions for the High Speed Train Network

2007-2009

EnerAmb

Solutions for the production of Electricity from Intermittent Renewable Sources using Storage Systems simultaneously

2007-2010

Anemos.plus

Advanced Tools to Manage Electricity Grids with Large-scale Wind Generation

2007-2011

TSO-Reserva

Evaluation of suitable operational reserve levels in the Iberian electrical systems - medium and long-term

2006-2010

EFACEC-OPF

Software module for a DMS, OPF - Optimal Power flow

2006-2015

PrevEol

Operationalization of the Wind Power Forecasting System

2006-2007

MoreMicrogrids

Advanced Architectures and Control Concepts for More Microgrids

2006-2009

CARCons

Characterization of consumers and grids

2002-2010

EFACEC-DMS

Advanced Modules for DMS (Distribution Management Systems)

2001

Team
001

Laboratories

Laboratory of Smart Grids and Electric Vehicles

Publications

CPES Publications

View all 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

State estimation pre-filtering with overlapping tiling of autoencoders

Authors
Saran, MAM; Miranda, V;

Publication
Electric Power Systems Research

Abstract
This paper presents a new concept for an approach to deal with measurements contaminated with gross errors, prior to power system state estimation. Instead of a simple filtering operation, the new procedure develops a screen-and-repair process, going through the phases of detection, identification and correction of multiple gross errors. The method is based on the definition of the coverage of the measurement set by a tiling scheme of 3-overlapping autoencoders, trained with denoising techniques and correntropy, that produce an ensemble-like set of three proposals for each measurement. These proposals are then subject to a process of fusion to produce a vector of proposed/corrected measurements, and two fusion methods are compared, with advantage to the Parzen Windows method. The original measurement vector can then be recognized as clean or diagnosed with possible gross errors, together with corrections that remove these errors. The repaired vectors can then serve as input to classical state estimation procedures, as only a small noise remains. A test case illustrates the effectiveness of the technique, which could deal with four simultaneous gross errors and achieve a result close to full recognition and correction of the errors. © 2017 Elsevier B.V.

2018

Hybrid systems control applied to wind power forecasting deviation considering PHS

Authors
Rezende, I; Silva, JM; Miranda, V; Freitas, V; Dias, BH;

Publication
SBSE 2018 - 7th Brazilian Electrical Systems Symposium

Abstract
This paper proposes a methodology using Hybrid Control System (HS) to manage the integration of Variable Renewable Electricity Sources (VRES). The HS define a combination of discrete and continuous signals, in this case, discrete by Pump-Hydro-Storage (PHS) and continuous performance is the Wind Power (WP). The coupling of Wind Power and PHS to produce a dispatchable power output could be a significant benefit to those in an energy trading system. Improving VRES prediction reduces system dispatch errors, however does not give total economic opportunities to the generator. Increased dispatchable backup power generation can improve the system's ability to handle deviations of WP, as verified when the proposed approach is applied to Brazilian and Portuguese power system. © 2018 IEEE.

2018

Identifying topology in power networks in the absence of breaker status sensor signals

Authors
Oliveira, R; Bessa, R; Iranda, VM;

Publication
19th IEEE Mediterranean Eletrotechnical Conference, MELECON 2018 - Proceedings

Abstract
This paper presents the concept of a tapered deep neural network, subject to unsupervised training layer by layer, under a criterion of maximum entropy, to perform the estimation of breaker status in the absence of a specific sensor signal. The almost perfect prediction power of the model confirms the conjecture that the knowledge of the topology of a network is hidden in the electric measurement values in the network. A test case is presented with computing speed accelerated by using a GPU (graphics processing unit). The comparison with a previous model illustrates the superiority of the novel approach. © 2018 IEEE.

2018

The challenges of estimating the impact of distributed energy resources flexibility on the TSO/DSO boundary node operating points

Authors
Silva, J; Sumaili, J; Bessa, RJ; Seca, L; Matos, M; Miranda, V;

Publication
Computers and Operations Research

Abstract
The increasing penetration of renewable energy sources characterized by a high degree of variability and uncertainty is a complex challenge for network operators that are obligated to ensure their connection while keeping the quality and security of supply. In order to deal with this variable behavior and forecast uncertainty, the distribution networks are equipped with flexible distributed energy resources capable of adjusting their operating point to avoid technical issues (voltage problems, congestion, etc.). Within this paradigm, the flexibility that, in fact, can be provided by such resources, needs to be estimated/forecasted up to the transmission network node (primary substation) and requires new tools for TSO/DSO coordination. This paper addresses this topic by developing a methodology capable of finding the flexibility area while taking into account the technical grid constraints. The proposed approach is based on the formulation of a single optimization problem which is run several times, according with the expected precision for the flexibility area estimation. To each optimization problem run, a different objective function belonging to a family of straight lines is assigned. This allows exploring the active and reactive power flow limits at the TSO/DSO boundary nodes - which define the flexibility area. The effectiveness of the proposed model has been evaluated on two test networks and the results suggest a step forward in the TSO/DSO coordination field. Nevertheless, further investigations to study the effect of assets with discrete control nature (e.g., on load tap changers - OLTC, capacitor banks) on the occurrence of disjoint flexibility areas should be carried. © 2017 Elsevier Ltd.

Supervised Theses

2018

Algoritmo que Determina los Indices de Precio para la Mejora en la Toma de Decisiones de la Nueva Contratacion del Suministro Electrico

Author
Maria Ortiz Cavada

Institution
Outra

2018

Smart operation of transformers for sustainable electric vehicles integration and model predictive control for energy monitoring and management

Author
Radu Godina

Institution
Outra

2018

Enhancing the efficiency of electricity utilization through home energy management systems within the smart grid framework

Author
Tiago Mendes

Institution
Outra

2018

Modeling a cooperation environment for flexibility enhancement in smart multi-energy industrial systems

Author
Maziar Damavandi

Institution
Outra

2018

Sustainable distribution network planning considering multi-energy systems and plug-in electric vehicles parking lots

Author
Nilufar Neyestani

Institution
Outra

Facts & Figures

12Academic Staff

2016

3Book Chapters

2016

78Researchers

2016

Contacts