Papers by Danilo Gastaldello
2018 13th IEEE International Conference on Industry Applications (INDUSCON)
Technologies to support the development of smarter energy systems and increase the opportunities ... more Technologies to support the development of smarter energy systems and increase the opportunities for home energy management have increased in recent years. Through the addition of sensing, communication and drive components, devices and home appliances become increasingly "smart" so that they can communicate with each other, transmit data to end users and facilitate remote operation and automation, for example during periods of peak demand. This has the potential to provide energy-related benefits to end-users and network operators. One of the key benefits of intelligent techniques is the potential to support power reductions and demand side management. Within this context, this work aims to propose a system architecture for recommend suggestions to smart homes inhabitants (according to different user profiles), aiming cost reduction and energy efficiency. The work also includes the implementation of a RESTFul mining web service, which is part of the proposed architecture. The web service is used to release data mining, classifying data over the proposed recommender system. Through the data model transmission known as JSON (JavaScript Object Notation), the web service receives data and automatically convert to JSON Instances structures, processing the same with the data mining algorithms.
The electricity demand in Brazil has been growing. Some studies estimate that through 2035 the en... more The electricity demand in Brazil has been growing. Some studies estimate that through 2035 the energy consumption (the power consumption) should increase 78%. Two distinct actions are necessary to meet this growth: the construction of new generating plants and to reduce electrical losses in the country. As the construction of power plants have a high price, coupled with the growth of (current) environmental concern, electric utilities are investing in reducing losses, both technical and non-technical. In this context, this paper aims to present an overview of nontechnical losses in Brazil and to raise a discussion on the reasons that contribute to energy fraud
The current practices in the consumption metering by electricity utilities is currently largely b... more The current practices in the consumption metering by electricity utilities is currently largely based on monthly consumption reading. The consumption metering device is always calculating the cumulative consumption. Then, it is possible to calculate the difference between the actual and the previous consumption evaluation in order to estimate the monthly consumption. The power systems planning needs in many aspects to handle consumption data obtained for shorter periods, namely in the Demand Response programs planning. The work presented in this paper is based on the application of typical consumption profiles that are previously defined for a certain power system area. Such profiles are then used in order to estimate the 15 minutes consumption for a certain consumer or consumer type
2018 Simposio Brasileiro de Sistemas Eletricos (SBSE), 2018
The smart grids bring several new possibilities due to the new technology's needed for implem... more The smart grids bring several new possibilities due to the new technology's needed for implementation. However, it may not be clear to the consumer what benefits can be achieved because of this new reality, triggering considerable rejection rates due to lack of knowledge and information. New products and services can leverage integration between consumers and utilities, enabling better levels of energy efficiency by both consumers and utilities, which is one of the main objectives of smart grids. In this context, this article proposes the use of techniques to predict energy consumption as a useful tool for consumers and directly related to energy efficiency. It presents the main techniques for forecasting and a case study demonstrating the feasibility of the proposed solution. As a result, the method used reached a small margin of error in the short-term forecast.
The electric utilities have large revenue losses annually due to commercial losses, which are cau... more The electric utilities have large revenue losses annually due to commercial losses, which are caused mainly by fraud on the part of consumers and faulty meters. Automatic detection of such losses where there is a complex problem, given the large number of consumers and the high cost of each inspection, not to mention the wear of the relationship between company and consumer. Given the above, this paper aims to briefly present some methodologies applied by utilities to identify consumer frauds.
Anais da XIV Conferência Brasileira sobre Qualidade da Energia Elétrica, 2021
Este artigo consiste em um estudo analítico de curvas de carga residenciais, para verificar a via... more Este artigo consiste em um estudo analítico de curvas de carga residenciais, para verificar a viabilidade da adoção da tarifa branca, a qual considera os registros de consumo em intervalos fixos no tempo. A ideia é obter os perfis de consumo que mais se beneficiariam com a adesão a essa alternativa tarifária no atual contexto brasileiro. O objetivo é verificar, a partir da análise das curvas, características de vários perfis de consumo, se a adesão à tarifa branca traria benefícios aos usuários. Idealmente, os consumidores não deveriam alterar radicalmente seus hábitos de consumo para reduzir seus custos com energia elétrica. Por outro lado, o alinhamento mais adequado de perfis de consumo com tarifas também propícia melhor aproveitamento da capacidade instalada por parte da concessionária. A metodologia proposta consiste então em avaliar curvas de carga sintetizadas a partir de dados estatísticos e da definição de cronogramas de consumo pré-estabelecidos pela concessionária para a...
2018 Simposio Brasileiro de Sistemas Eletricos (SBSE), 2018
Electrical energy management is a basic necessity for a country development, currently becoming t... more Electrical energy management is a basic necessity for a country development, currently becoming theme of discussion by Government and Regulatory Agencies that looks for best practices on energy efficiency. For Brazil, the energy efficiency programs look continuously for private and public investments on new procedures, standards and projects but the return of investment is not considered in order to maximize the energy savings. Based on that, a deeper analysis is carried out on two main Brazilian Programs (Procel and PEE), comparing investments year over year, energy savings and return of investments. Based on this analysis, it's possible to note that majority of resources is not applied on the best projects or projects that are aligned with economical aspects of region, but on social projects due to Government regulations that don't have high return of investment. A proposal of change for the currently Brazilian scenario is also proposed in order to maximize the energy saving.
2012 IEEE 16th International Conference on Intelligent Engineering Systems (INES), 2012
ABSTRACT In this paper we propose a fast and an accurate method for fault diagnosis in power tran... more ABSTRACT In this paper we propose a fast and an accurate method for fault diagnosis in power transformers by means of Optimum-Path Forest (OPF) classifier. Since we applied Dissolved Gas Analysis (DGA), the samples have been labeled by IEEE/IEC standard, which was further analyzed by OPF and several other well known supervised pattern recognition techniques. The experiments have showed that OPF can achieve high recognition rates with low computational cost.
2013 IEEE PES Conference on Innovative Smart Grid Technologies (ISGT Latin America), 2013
The non-technical loss is not a problem with trivial solution or regional character and its minim... more The non-technical loss is not a problem with trivial solution or regional character and its minimization represents the guarantee of investments in product quality and maintenance of power systems, introduced by a competitive environment after the period of privatization in the national scene. In this paper, we show how to improve the training phase of a neural network-based classifier using a recently proposed meta-heuristic technique called Charged System Search, which is based on the interactions between electrically charged particles. The experiments were carried out in the context of non-technical loss in power distribution systems in a dataset obtained from a Brazilian electrical power company, and have demonstrated the robustness of the proposed technique against with several others nature-inspired optimization techniques for training neural networks. Thus, it is possible to improve some applications on Smart Grids.
2012 IEEE 16th International Conference on Intelligent Engineering Systems (INES), 2012
ABSTRACT The need for high reliability and environmental concerns are making the underground netw... more ABSTRACT The need for high reliability and environmental concerns are making the underground networks the most appropriate choice of energy distribution. However, like any other system, underground distribution systems are not free of failures. In this context, this work presents an approach to study underground systems using computational tools by integrating the software PSCAD/EMTDC with artificial neural networks to assist fault location in power distribution systems. Targeted benefits include greater accuracy and reduced repair time. The results presented here shows the feasibility of the proposed approach.
2012 10th IEEE/IAS International Conference on Industry Applications, 2012
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Conferência Brasileira de Dinâmica, Controle e Aplicações, 2011
Page 1. 1 INTELIGÊNCIA COMPUTACIONAL APLICADA NA IDENTIFICAÇÃO E CLASSIFICAÇÃO DE PROBLEMAS DE ME... more Page 1. 1 INTELIGÊNCIA COMPUTACIONAL APLICADA NA IDENTIFICAÇÃO E CLASSIFICAÇÃO DE PROBLEMAS DE MEDIÇÃO DE ENERGIA ELÉTRICA André Nunes de Souza1, Lucas Imaizumi Pereira2, Maria Goretti ...
... de Souza 1 , Pedro da Costa Junior 2, Renato de Oliveira 3 Maria Goretti Zago 4, ... de Hábit... more ... de Souza 1 , Pedro da Costa Junior 2, Renato de Oliveira 3 Maria Goretti Zago 4, ... de Hábitos de Consumo André NS, Pedro C. Jr., Renato O., Maria GZ, João ... REFERÊNCIAS [1] AG Martins, R. Figueiredo, Simulation-Based Assessment of Electric Load Management Programs ...
2014 11th IEEE/IAS International Conference on Industry Applications, 2014
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Papers by Danilo Gastaldello