Fonte: ANEEL
CLIC Energia publishes the twenty-eighth of 30 projects selected for the 4th Edition of R&D Magazine, launched 8/17/2011, during the VI Congress on Technological Innovation in Electrical Energy (CITENEL) and the II Energy Efficiency Seminar in the Electric Sector (SEENEL), held in Fortaleza (CE).The objective is to show society the results achieved with R&D projects.The onsite publication accompanies the order used in the magazine.
The twenty-eighth article, from Companhia Energética do Ceará (Coelce), brings details about noise generating equipment (interference) in the low voltage current, which impedes using electricity without running it through a filtering process in the power meter.The instrument, elaborated by Coelce, Sosama Mercantil e Industrial Ltda. and Federal Institute of Ceará (IFCE) technicians, is an improved version of similar equipment previously tested by Ampla Energia e Serviços S/A and Companhia Energética do Maranhão (Cemar).In the case of the two distributors, the interference generated by the illegal hookup inhibitor would burn out devices connected to the grid without filtering.Furthermore, once activated, the inhibitor had to be replaced.The team headed up by Coelce solved these problems and made a smaller illegal hookup inhibitor that is easier to install on the posts.The noise inhibitor was tested in two situations in the field.In the first, in a location in Fortaleza with many clandestine and illegal hookups, the device helped cut losses from 49% to 2.7%.In the rural region, where there are illegal hookups for running irrigation system pumps, losses were cut by 39%.The experience with the two pilot runs demonstrated the high efficiency of the illegal hookup inhibitor in low voltage circuits, serving as an alternative to repression of irregular power use.
The full text of all articles can be found here (Revista de P&D 4th Edition). (BT/DB)
Read what has been published so far.
ANEEL launches the fourth edition of R&D Magazine on the first day of CITENEL
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Equipment produces interference in current to avoid illegal hookups of low voltage energy
In order to combat illegal hookups, Companhia Energética do Ceará (COELCE) developed equipment in an R&D project that generates noise (interference) in the current and, thus, impedes the use of energy from illegal hookups without it first running through the consumer’s meter system.The equipment is a noise generator that, when installed in the distribution transformer, makes the energy improper for use until it runs through a filtering process that uses a noise remover installed in the consumer’s meter equipment.After filtering, the energy is once again fit for use.The instrument is an improvement on the project previously tested by the AMPLA Energia e Serviços S/A and Companhia Energética do Maranhão (CEMAR) utilities.In the previous version, the illegal hookup inhibitor ended up burning out electrical equipment connected to the grid without filtering the energy.Furthermore, once activated, the inhibitor had to be replaced.With this improvement, these problems were solved and, furthermore, the equipment is smaller, facilitating installation on the posts.Two sites were chosen for installing the illegal hookup inhibitor after lab tests.One was a low voltage circuit in the city of Fortaleza, with 74 consumers, where the utility detected many clandestine and illegal hookups to the power grid.After installing the project, energy losses were cut from 49% to 2.7%.Another area chosen was in the rural region where farms use irrigation.In that region, the low voltage grid passes through the consumers' property, making it vulnerable to the use of "claws" or "hooks" installed directly on the distribution grid to feed pumping systems.This area saw a 39% reduction in losses.According to researchers, tests run in the field demonstrated the equipment’s high efficiency in different scenarios.Cuts in losses obtained from the pilot installed in the urban and in the rural irrigation areas demonstrated that the illegal hookup inhibitor is an effective alternative to combat commercial losses in low voltage circuits. Technical data sheet |
