Análise das perturbações de qualidade de energia em sistemas de distribuição e a adequação as tendências regulatórias do PRODIST

The public consultation n° 018/2014, for review the Module 8 of Procedures of Electricity Distribution (PRODIST), conducted by National Agency of Electric Energy (ANEEL), aims to improve the regulation of power quality, considering the phenomena harmonic distortion, voltage unbalance, voltage fluctuation and short term voltage variation. These regulatory changes impact in the way of analysis and treatment, of power quality disruption, by the electricity distribution. The developed work makes a study about the applications of these new regulatory requests and hopes to contribute with a better understanding. Through power quality measurements, in distribution substations, with different load profiles (industrial, urban and rural), was obtained a real view of the system, under the aspect of power quality, to evaluate the regulation adherence to the current version and proposed. In this case study, although being in accordance with the current methodology, happened a transgression of propose. With a comparative analysis, was possible to identify some phenomena that were more flexible in the proposed revision and others with more severe monitoring

Impacto da redução do nível de tensão na iluminação residencial em uma rede inteligente

In this paper, we will present an overview of the smart grid defining the three main systems that compose it: smart infrastructure system, smart management system and smart protection system. We will conceptualize a functionality of smart management system, the conservative voltage reduction, citing its benefits and its history of application. And, finally, we'll cover a test in which we reduce the nominal voltages on incandescent bulbs, CFL and LED, in the context of residential lighting, and on LED and HPS, in the context of public lighting. The test aims to check whether the voltage reduction adversely affects sources of lighting by measuring the temperature manually with a thermal imaging camera FLIR and illuminance with a LUX meter. The set of power factor, total harmonic distortion, and input power values will be collected automatically through the power quality Analyzer Fluke 345 with a probe Fluke Hall Effect Current. For residential lighting, it was found that both CFL and LED had good performance with the smallest variations in illuminance. Between both, the LED source had the lowest harmonics and the lowest power consumption, on the other hand incandescent bulbs had a bad performance as expected. Public light sources also had a good performance and obtained power factors within the standards, as opposed to the CFL and LED residential sources. The data collected clearly shows the feasibility for nominal voltage reductions. Even with small reductions, there are possibilities of savings which can be passed on to the utilities and consumers