Definition of Distribution Network Tariffs Considering Distribution Generation and Demand Response

The use of distribution networks in the current scenario of high penetration of Distributed Generation (DG) is a problem of great importance. In the competitive environment of electricity markets and smart grids, Demand Response (DR) is also gaining notable impact with several benefits for the whole system. The work presented in this paper comprises a methodology able to define the cost allocation in distribution networks considering large integration of DG and DR resources. The proposed methodology is divided into three phases and it is based on an AC Optimal Power Flow (OPF) including the determination of topological distribution factors, and consequent application of the MW-mile method. The application of the proposed tariffs definition methodology is illustrated in a distribution network with 33 buses, 66 DG units, and 32 consumers with DR capacity.

Load Profiling Tool to Support Smart Grid Operation Scenarios

This paper presents the characterization of high voltage (HV) electric power consumers based on a data clustering approach. The typical load profiles (TLP) are obtained selecting the best partition of a power consumption database among a pool of data partitions produced by several clustering algorithms. The choice of the best partition is supported using several cluster validity indices. The proposed data-mining (DM) based methodology, that includes all steps presented in the process of knowledge discovery in databases (KDD), presents an automatic data treatment application in order to preprocess the initial database in an automatic way, allowing time saving and better accuracy during this phase. These methods are intended to be used in a smart grid environment to extract useful knowledge about customers’ consumption behavior. To validate our approach, a case study with a real database of 185 HV consumers was used.

Analysis of Consumption Data to Detect Commercial Losses Using Performance Evaluation Methods in a Smart Grid

Electric power networks, namely distribution networks, have been suffering several changes during the last years due to changes in the power systems operation, towards the implementation of smart grids. Several approaches to the operation of the resources have been introduced, as the case of demand response, making use of the new capabilities of the smart grids. In the initial levels of the smart grids implementation reduced amounts of data are generated, namely consumption data. The methodology proposed in the present paper makes use of demand response consumers’ performance evaluation methods to determine the expected consumption for a given consumer. Then, potential commercial losses are identified using monthly historic consumption data. Real consumption data is used in the case study to demonstrate the application of the proposed method.

Domestic Consumption Simulation and Management Using a Continuous Consumption Management and Optimization Algorithm

The recent changes concerning the consumers’ active participation in the efficient management of load devices for one’s own interest and for the interest of the network operator, namely in the context of demand response, leads to the need for improved algorithms and tools. A continuous consumption optimization algorithm has been improved in order to better manage the shifted demand. It has been done in a simulation and user-interaction tool capable of being integrated in a multi-agent smart grid simulator already developed, and also capable of integrating several optimization algorithms to manage real and simulated loads. The case study of this paper enhances the advantages of the proposed algorithm and the benefits of using the developed simulation and user interaction tool.

Realistic Traffic Scenarios Using a Census Methodology: Vila Real Case Study

This paper presents the first phase of the redevelopment of the Electric Vehicle Scenario Simulator (EVeSSi) tool. A new methodology to generate traffic demand scenarios for the Simulation of Urban MObility (SUMO) tool for urban traffic simulation is described. This methodology is based on a Portugal census database to generate a synthetic population for a given area under study. A realistic case study of a Portuguese city, Vila Real, is assessed. For this area the road network was created along with a synthetic population and public transport. The traffic results were obtained and an electric buses fleet was evaluated assuming that the actual fleet would be replaced in a near future. The energy requirements to charge the electric fleet overnight were estimated in order to evaluate the impacts that it would cause in the local electricity network.

Distributed energy resources scheduling considering real-time resources forecast

Energy resource scheduling is becoming increasingly important, such as the use of more distributed generators and electric vehicles connected to the distribution network. This paper proposes a methodology to be used by Virtual Power Players (VPPs), regarding the energy resource scheduling in smart grids and considering day-ahead, hour-ahead and realtime time horizons. This method considers that energy resources are managed by a VPP which establishes contracts with their owners. The full AC power flow calculation included in the model takes into account network constraints. In this paper, distribution function errors are used to simulate variations between time horizons, and to measure the performance of the proposed methodology. A 33-bus distribution network with large number of distributed resources is used.

Remuneration Structure Definition for Distributed Generation Units and Demand Response Participants Aggregation

The implementation of competitive electricity markets has changed the consumers’ and distributed generation position power systems operation. The use of distributed generation and the participation in demand response programs, namely in smart grids, bring several advantages for consumers, aggregators, and system operators. The present paper proposes a remuneration structure for aggregated distributed generation and demand response resources. A virtual power player aggregates all the resources. The resources are aggregated in a certain number of clusters, each one corresponding to a distinct tariff group, according to the economic impact of the resulting remuneration tariff. The determined tariffs are intended to be used for several months. The aggregator can define the periodicity of the tariffs definition. The case study in this paper includes 218 consumers, and 66 distributed generation units.

Optimization of Generation and Aggregated Consumption Shifting for Demand Response Programs Definition

The concept of demand response has drawing attention to the active participation in the economic operation of power systems, namely in the context of recent electricity markets and smart grid models and implementations. In these competitive contexts, aggregators are necessary in order to make possible the participation of small size consumers and generation units. The methodology proposed in the present paper aims to address the demand shifting between periods, considering multi-period demand response events. The focus is given to the impact in the subsequent periods. A Virtual Power Player operates the network, aggregating the available resources, and minimizing the operation costs. The illustrative case study included is based on a scenario of 218 consumers including generation sources.

Real-Time Simulation of Real-Time Pricing Demand Response to Meet Wind Variations

Recent changes of paradigm in power systems opened the opportunity to the active participation of new players. The small and medium players gain new opportunities while participating in demand response programs. This paper explores the optimal resources scheduling in two distinct levels. First, the network operator facing large wind power variations makes use of real time pricing to induce consumers to meet wind power variations. Then, at the consumer level, each load is managed according to the consumer preferences. The two-level resources schedule has been implemented in a real-time simulation platform, which uses hardware for consumer’ loads control. The illustrative example includes a situation of large lack of wind power and focuses on a consumer with 18 loads.

Relatório de Estágio

O presente Relatório de Estágio é desenvolvido no âmbito da unidade curricular de Integração Curricular: Prática Educativa e Relatório de Estágio, do Mestrado em Ensino do 1.º e do 2.º Ciclo do Ensino Básico. É com base neste documento que culmina o mestrado profissionalizante, onde é exposto todo o percurso pedagógico desenvolvido pela mestranda e se apresenta um quadro teórico e legal que sustenta a finalidade educativa. Durante a Prática Educativa Supervisionada foi desenvolvido um percurso pelo par pedagógico sob a orientação dos professores cooperantes e dos supervisores institucionais, cuja cooperação permitiu a construção e o aprofundamento dos conhecimentos e o contacto com um contexto de intervenção prioritária. O presente relatório aborda, para além dos assuntos apresentados, o perfil do professor, a planificação e o desenvolvimento da prática educativa, e o papel reflexivo e investigador do professor. Apresenta, ainda, os percursos pedagógicos das quatro áreas disciplinares que integram o mestrado e mostra a forma como foi conduzida a investigação-ação implementada durante a PES. Este relatório assume-se como um documento único e pessoal que encara a prática reflexiva como uma ferramenta que potencializa a avaliação do professor, na procura de um constante crescimento e amadurecimento da prática educativa.

Relatório de Estágio

O percurso de formação para a docência que teve início com a Licenciatura em Educação Básica e termina agora com a conclusão do Mestrado em Ensino do 1º e 2º ciclos do Ensino Básico culmina com a realização e defesa do presente relatório cujo objetivo é demonstrar, por meio da análise e reflexão, o trabalho realizado pela mestranda no âmbito da sua intervenção educativa em contexto de Prática Educativa Supervisionada (PES). A intervenção educativa foi um percurso onde foram tomadas opções sustentadas e com intenção pedagógica, numa articulação entre a teoria e a prática, com uma postura permanentemente crítica e reflexiva das práticas com o intuito de as melhorar. O percurso desenvolveu-se numa perspetiva investigativa com características de investigação-ação que culminou na realização de um projeto investigativo implementado nos contextos, percecionando-se, deste modo, a importância da necessidade permanente do professor-investigador para que possa investigar as suas práticas educativas, de forma a melhorá-las e transformá-las. A supervisão teve um papel fundamental no decorrer de todo o processo através do acompanhamento por parte dos supervisores institucionais, contanto com o apoio e colaboração dos professores cooperantes e o trabalho colaborativo com o par pedagógico, permitindo melhorar práticas e contribuir para o crescimento pessoal e profissional da mestranda. O relatório de estágio surge, desta forma, como retrato do percurso desenvolvido, que ilustra o início da construção do que é ser professor e espelha um crescimento pessoal e profissional que se vai desenvolver futuramente

Relatório de Estágio

O Relatório de Estágio, elaborado no âmbito do Mestrado em Ensino do 1.º e 2.º Ciclo do Ensino Básico, pretende ser um reflexo da prática educativa realizada e um contributo para a formação pessoal e profissional da mestranda, caracterizando-se por uma atitude crítica, reflexiva e investigativa. A revisitação e a análise refletida da ação, e das opções didático-pedagógicas que a orientaram, permitiram traçar um percurso para a melhoria das práticas educativas, determinante para o desenvolvimento da identidade docente. Desta experiência, salienta-se, por um lado, o trabalho realizado em par pedagógico, em todos os momentos do ciclo da supervisão, que potenciou momentos de debate e de reflexão – e, consequentemente, uma prática informada, criativa e rigorosa, fundamentada em princípios e valores partilhados. Por outro lado, destaca-se também a influência da filosofia do Movimento da Escola Moderna na conceção e implementação da Prática Educativa Supervisionada (PES), o que contribuiu ainda para a valorização da colaboração entre todos os atores envolvidos neste palco que é a ação educativa. Ao longo da PES, o par pedagógico privilegiou situações de ensino e de aprendizagem que favorecessem a cooperação e a comunicação bem como atividades que adequadas às necessidades do contexto educativo e aos interesses das crianças, baseada numa relação horizontal entre professores e alunos. Deste modo, a PES, sustentada num exercício de constante articulação entre teoria e prática, constituiu uma oportunidade de experienciar os desafios da docência e de compreender como é que esta pode concorrer para uma sociedade mais justa, livre e democrática.