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Every year the popularity of the net metering system, for small producers of energy in the Brazilian electric system is increasing fast driven by the Normative Resolutions REN 482/2012 and REN 687/2015 of the National Electricity Agency (ANEEL). These resolutions can encourage investment in the sector and create the growth of renewable energies in the energy matrix through distributed generation (DG)...
In the current Brazilian energy sector a lack of management for connecting distributed generation sources in distribution networks, especially mini and micro generation, can lead to several negative impacts on the quality of electrical energy supplied to the customers. The distribution energy companies are responsible for controlling and managing the distribution network in order to maintain the quality...
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...
Considering the amended Normative Resolution No. 482/2012 (NR 482/2012) of the Brazilian National Agency of Electric Energy (ANEEL), which regulates the connection and the compensation of power systems in distributed generation (DG) through the NR 687/2015 expected for March 2016, it can be observed an incentive to the complementarity between the sources of DG and the integration of available resources...
This paper presents a proposal for a commercial arrangement model to be implemented in the project of the research & development program was named P014/2012 developed by Central Power in Southern Brazil (Eletrosul) and Federal University of Santa Maria (UFSM) in order to make it possible the use of financial compensation system in the consumer units of swine farms, responsible for the biogas production,...
The Brazilian generation system is based on large plants, usually dams located far from load centers, connected to these transmission lines. However, there is an incentive for the use of renewable energy sources distributed to diversify the energy matrix and reduce environmental impacts. The new regulations reinforce this incentive also including the application of distributed generation in low voltage...
This paper presents a new methodology to perform the automatic reconfiguration of distribution networks incorporating distributed generation in normal operation. The power generation availability of wind turbines, solar photovoltaic panels and small hydropower are considered in the reconfiguration process. The real-time reconfiguration methodology is based on a heuristic method to determine the best...
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...
This paper presents a heuristic method to solve the network reconfiguration problem in the presence of distributed generation (DG) in order to minimize energy losses and improve the performance indexes in distribution system. Topological reconfiguration corresponds to an important tool for planning and operation of electric power distribution systems. Considering the distribution operation planning,...
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...
Considering that air conditioners are responsible for much of the demand and energy consumption in public buildings, this paper presents a proposal for intelligent demand management in public school buildings through a methodology based on fuzzy logic systems. The method aims to make the implementation of a demand management system economically attractive, using variables that do not depend on the...
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...
The parallelism of distribution networks can be used to transfer loads between feeders without the need of disconnection of consumers during the switching. In the context of the Smart Grids, the parallelism of feeders can be used in automatic reconfiguration of networks for the improvement of power quality and voltage levels, and reduction of energy losses. However, the switching for parallelism must...
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...
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