Fonte: ANEEL
CLIC Energy publishes the twenty-second of the 30 projects selected for the 4th Edition of the Journal of Research and Development (P&D), released on 17/08, during the VI Congress of Technological Innovation in Electrical Energy (CITENEL) and the II Seminar on Energy Efficiency in the Electricity Sector (SEENEL), held in Fortaleza (CE). The goal is to provide society with the results achieved with the P&D projects. The on-site publication monitors the order of insertion into the magazine.
The twenty-second article, from Espírito Santo Power PlantsS/A (Escelsa), announces the creation of a low cost meter to measure the quality of electrical energy (QEE) provided by the distributor. Developed by researchers from Escelsa, and also from the Federal University of EspíritoSanto (UFES), the Federal University of Uberlândia (UFU), the Espírito SantoFederal Institute of Education, Science and Technology, and the EspíritoSantoTechnology Foundation, the equipment fulfills the requirements of Electrical Energy Distribution Procedures in the National Electric System (Prodist Module 8), established in 2008 by the National Agency for Electrical Energy (ANEEL).
At an estimated priceof R$ 1 thousand, the meter is comparable to similar resources in the market, with prices between R$ 5.5 thousand and R$ 100 thousand. Among the equipment’s advantages are remote operation, the minimum autonomy of six hours, the possibility of outdoor installation and unlimited storage capacity, once measurements are transmitted over the internet and wireless data networks and stored in a server. Tests with the equipment, according to the researchers, have demonstrated good performance and an excellent cost/benefit relationship. The reduced price for the production of the device enables comprehensive monitoring of the network and an improvement in the assessment of the quality indices, contributing to increased quality of energy supply.
The full text of all articles may be consulted here (Journal of P&D, 4th Edition). (BT/DB)
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Low cost equipment allows monitoring of energy quality in real time
Researchers from Escelsa (Espírito Santo Power PlantsS/A), from the Federal University of EspíritoSanto (UFES), the Federal University of Uberlândia (UFU), the Espírito SantoFederal Institute of Education, Science and Technology, and the EspíritoSantoTechnology Foundation have developed low-cost meter for measuring the quality of energy supply. At the end of the study, the equipment turned out to amount to R$ 1,000.00, with the possibility of reducing the cost by another 20% if on large-scale use. On the market, according to researchers, this equipment is priced between R$ 5,500.00 and R$ 100,000.00. The meter developed has advantages such as remote operation, minimum autonomy of six hours, the possibility of outdoor installation and unlimited storage capacity (the measurements are transmitted and stored on a server). The motivation of the research was the regulation of the Electrical Energy Distribution Procedures in the National Electrical System (Prodist Module 8) by the National Agency for Electrical Energy (ANEEL), in 2008, which established quality standards in the supply of energy. This standard became relevant in the developing of a low cost meter, which could have widespread use. The developed equipment does the measurement at 1,008 intervals of 10 minutes, equivalent to one week of measurement. The ranges are divided into "windows" of time. As the occurrences of interruptions or voltage variations invalidate intervals, the invalid data are replaced by an equal number of valid intervals thereafter. Once the measurement is complete, the results are sent (via wireless communication services and Internet) for storage on a server, which also manages the monitoring system. According to the researchers, the tests indicated a good performance and an excellent cost-benefit relationship of the equipment. The meter meets the needs of the concessionaire, which allows implantation of extensive monitoring at reduced cost and provides a significant contribution towards the raising of quality indexes, and, consequently, to the improvement of quality of the power supply. Technical Folder Execution:Espírito Santo Federal University of Education, Science and Technology, Espírito Santo Technology Foundation and Federal University of Uberlândia. |
