Abstract

FACTS devices are widely used in world practice to compensate for voltage fluctuations caused by the operation of an electric arc furnace (EAF) in a power system. The spectrum of voltage fluctuations depends on the design and operating conditions of the EAF, as well as the characteristics of the power supply system. At the design stage, of considerable interest are methods for assessing the predicted decrease in voltage fluctuations when using the selected compensator for the particular EAF. This article presents the principles of modeling the impact of a FACTS device with a known compensation delay on the level of voltage fluctuations in the EAF power supply system. The index ΔU <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</inf> is used as the equivalent level of voltage fluctuations in the compared applications. This method made it possible to use relatively simple models of EAF, FACTS and power supply system to the adequate comparative evaluating the effect of compensation devices on voltage fluctuations in the EAF power system.

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