Harmonics and Flicker Analysis in Arc Furnace Power Systems
نویسندگان
چکیده
This paper presents guidelines for the accurate evaluation of harmonics and flicker generated by ac electric arc furnaces, and its propagation through transmission and distribution systems. It is presented a typical case where a HV system supplies a high capacity arc furnace. The electrical network is simulated using the ATP version of the EMTP where a non-linear time-varying three-phase arc model is implemented in MODELS. The time-domain simulations are then used to evaluate the harmonic distortion and the short-term flicker severity index (Pst). For such purpose, two programs were developed using the MATLAB programming language.
منابع مشابه
A Comparison between SVC and STATCOM in Flicker Mitigation of Electric Arc Furnace using Practical Recorded Data
Electric arc furnace (EAF) is one of the largest loads in electric power systems. It is highly time varying and nonlinear. Its reactive power variations cause voltage fluctuations in nearby system which is known as flicker. On the other hand the nonlinear voltage-current characteristic causes strong voltage and current harmonics in EAF. To this end Flexible AC Transmission Systems (FACTS) techn...
متن کاملEvaluation of Power Quality in Arc Furnace Using Iec Flicker Meter
Power quality determines the fitness of electrical power to consumer devices. .Voltage flicker and harmonics are the types of power quality problems that are introduced to the power system as a result of arc furnace operation. Utilities are concerned about these effects and try to take precautions to minimize them. Therefore an accurate model of an arc furnace is needed to test .In this paper a...
متن کاملA Probabilistic Three-Phase Time Domain Electric Arc Furnace Model based on analytical method
An electric arc furnace (EAF) is known as nonlinear and time variant load that causes power quality (PQ) problems such as, current, voltage and current harmonics, voltage flicker, frequency changes in power system. One of the most important problems to study the EAF behavior is the choice of a suitable model for this load. Hence, in this paper, a probabilistic three-phase model is proposed base...
متن کاملVoltage Flicker Recognition due to Electric Arc Furnaces via Wavelet Transform Applications
Electric Arc Furnaces (EAFs), widely used for steel production industries, are highly nonlinear time-variant disturbing loads because of the random change of the electric arc length results in arc voltage and furnace/supply current fluctuations. Consequently, Power Quality (PQ) problems such as undesirable variations of reactive power, poor power factor, harmonics, and voltage flickers may appe...
متن کاملAnalysis of Different Loads with Multi-techniques Using D- Statcom
Due to the rapid growth of non-linear loads, such as power electronic control equipments and Electric arc furnace (EAF) power quality problems such as harmonics and voltage flicker are introduced in the power system. It occurs because of the time-varying and nonlinear behaviour of the Load. Arc furnaces are used in industries for induction heating and welding. Hence an Electric arc furnace mode...
متن کامل