Czasopismo | PRZEGLĄD ELEKTROTECHNICZNY | Rocznik 2016 - zeszyt 6

Accurate CPC Power Analysis under Extreme EAF's Distortion Conditions

10.15199/48.2016.06.29

nr katalogowy: 98805
10.15199/48.2016.06.29

Electric Arc Furnaces (EAF) are huge energy consumer. However due a limited power calculation the maximum electrical efficiency is not obtained. Most of the applications in market report the usage of inaccurate power quantities in EAF power control system. Because the extreme distortion conditions of power phenomena produced by the nonlinearity of the load in the EAF, the implementation of Current’s Physical Components (CPC) power theory has the potential of describing more appropriate than traditional power theories the physical load conditions and the electric power phenomenon during the Heat Process. Each one of the current components proposed by CPC offer useful information of the load condition, and give indicators which can be useful as stability indicators of the process for a better identification of the EAF stage. Streszczenie. Piece łukowe rzadko osiągają maksymalną skuteczność. Zastosowanie metody Current Physical Component pozwala bardziej dokładnie analizować warunki obciążenia podczas wyładowania i tym samym osiągać mniejsze zniekształcenia i lepszą skuteczność. Dokładna analiza pieców łukowych przy znaczącym zniekształceniu napięcia metodą CPC Keywords: Electric Arc Furnace, Non-Sinusoidal Signals, CPC Power Theory. Słowa kluczowe: piece łukowe, zniekształcenie napięcia, teoria CPC. Introduction. Electric Energy has been a global concern from the middle of the past century up to date. Reduction in norenewable resources, increase in pollution and increase in oil and gas prices are some of the factors that have turned energy efficiency into a determinant factor for the economic development of countries in the last years. Electrical efficiency has turned a key aspect for industry, utilities, governments and environment. In [1] the International Energy Agency (IEA) states that energy improvements on a global scale could save between 25 EJ and 37 EJ of energy per year (1.9 Gt of CO2 to 3.2 Gt of CO2 emissions per year[...]

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