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The short-term load forecasting study is characterized as an estimative of the consumption pattern ranging from a day to a few months ahead, related to the operation planning, mainly in a Unit Commitment and power supply strategies, for example. Improve load forecasting models, mainly about errors reduction is so important, improving the energy efficiency, reducing energy losses and increasing financial...
Wind energy has become a good alternative to diversification and expansion of the Brazilian electric matrix. However, the random nature of the wind speed makes its forecast complex, directly affecting the planning and operation of generation systems. For a proper integration, it is necessary to formulate the prediction of resources available through reliable methodologies. Currently, there are several...
The Distribution System is the physical interface between the utility and consumers. In order to ensure the reliability in the power supply, a good expansion and operation planning is required. Moreover, the planning of system is important to the optimization of the investments made by the utilities. In this sense, the diagnostic of the distribution system under study is essential to establish appropriate...
The power system is changing. Classic methodologies applied for planning the distribution system should be adapted in an environment of Smart Grids. In this sense, an accurate forecast of energy demand will be essential to the utilities in this new grid model, being prepared for insertion of electric vehicles (EV), distributed generation (DG) and strategies on the demand side management (DSM). Therefore,...
In contingency situation, the ability to self-healing plays an important role on reducing the time to restore the energy supply. The increasing use of remote controlled equipment in power systems leads the development of more efficient techniques for automatic restoration of power supply, being particularly important in Smart Grid applications. This paper presents a methodology and system for automatic...
Considering the constant development that have been happening on distribution networks, mainly with smart grids concept advent, the ancillary services support through distributed generation systems is essential to maintain and improve the quality of the supplied electrical energy. In this way, the electrical system could contain two subsystems: one subsystem for online measurement, which would detect...
The continuity of electric energy supply to consumers is a permanent objective of the power utilities, pursuing the development of technological solutions to improve the performance of restoring power in contingency conditions. The main purpose is to minimize the impact on the number of consumers affected and reduce the time required to restore the energy supply. In this way, the power utilities have...
The Distribution System is composed by many factors that define a great execution, when each one perform its function. These factors can be classified in two groups, the system planning and the system management. The relation between these groups is expressed by power supply continuity limits. These limits define how much the system is reliable, or in other words, if the energy injected in the system...
The Brazilian electrical system will pass through significant changes, reaching the integration of information technology infrastructure and communications. The smart metering and the application of hourly rates will be one of the firsts procedures that will be adopted in order to transform the existing network in Smart Grids and definitively change the role and the participation of the consumer in...
The implementation of Smart Grid technology in Brazil, will ensure a new scenario of opportunities for the integration of mini and micro-generation. This matter has been under regulation since April 2012. The characterization of micro and mini generation is related to the installed power and it usually is between 1 and 100 kW and 101 kW and 1000 kW, respectively. In addition to that, the Brazilian...
In the coming years the Brazilian electric system will face great challenges such as the integration of new technologies and the insertion of new elements in the power network. This new concept of power network (Smart Grid) combined with a smart metering infrastructure (AMI), will make it feasible to offer new pricing options for the low voltage consumers, which are still absent the regulatory incentives...
The smart metering and the application of energy hourly rates will be one of the more visible ways to include the consumer into smart grid concept. The residential consumers can be considered the most responsible for the costs of system expansion and do not have alternatives of tariff that induce it at a better use of energy. This way, the white hourly rate, which was created aiming the promotion...
The power system is going to undergo some changes regarding improvements of information and communication from technological innovation, getting a smarter system, term known as Smart Grid. One of the first changes to be adopted will be the replacement of electromechanical meters by electronic ones, called Smart Meters. With the use of Smart Meters is possible to apply for different tariffs according...
Topological reconfiguration is an important tool for the planning and operation of electric power distribution systems. Usually, the utilities can use multiple criteria regarding the observation of regulation policies and public awareness to drive the topological reconfiguration. Several researchers are looking for new optimization methods, as the complexity of this combinatorial issue is high in...
In the coming years, the Brazilian electric system will experience a (re)evolution, from integration with the infrastructure of information technology (IT) and communications, from which the smart metering and the application of hourly rates by posts tariffs will be one of the firsts procedures adopted in order to transform the existing network in Smart Grids and definitively change the role and the...
The aim of this paper is select the most appropriate hybrid energy system fueled by biogas from municipal solid waste (MSW) landfills. The paper provides some results obtained from the implementation of the MACBETH multicriteria evaluation approach for the comparison of five types of renewable energy technologies (RET) fueled by biogas. Besides, this methodology is also applied in the evaluation of...
This study aims to development of a methodology is minimize contracting costs of energy use and cost of the transmission system, from the optimal dispatch of Distributed Generation (DG). It's presents a model of optimal dispatch of Small Hydro Power (SHPs) in distribution systems based on Genetic Algorithms (GAs) multiperiod, which evaluates the financial impact of SHPs on utility supply contract...
In response to the escalating energy crisis and related pollution problems verified worldwide, it is essential to assume new energy technologies that use renewable energy sources in an efficient and environmentally friendly manner. Accordingly, biomass offers world-wide one of the largest exploitation potential among renewable energy sources. This paper focuses on biogas production from municipal...
The distribution systems need to adjust and intensify the use of new available technologies and incorporate intelligence to combat non-technical loss processes. Its detection is one of the greatest challenges to energy distribution companies. Studies and research involving load modeling or load estimation (LM/LE) on power system distribution combined with smart grid functionality will help control...
In response to the escalating energy crisis and related pollution problems, sustainability has thus become a major driving force in energy policy, leading to different strategies and incentives. The presented paper will apply a multicriteria methodology taking as basis fuzzy multi-rules and multi-sets to provide an appropriate evaluation of the projects from the clean development mechanism (CDM)....
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