3629

3428

كارشناسي ارشد

قدرت

اصفهان : دانشگاه صنعتي اصفهان ، دانشكده برق و كامپيوتر

1386

ده ، 136[II] ص ، مصور ، جدول ،نمودار

ص. ع. به فارسي و انگليسي

حميد رضا كارشناس

مهدي معلم

8/5/86

اكبر ابراهيمي ، يدالله ذاكري

مهندسي برق و كامپيوتر

ID3428

به فارسي و انگليسي: قابل رويت در نسخه ديجيتال

AbstractElectric Arc Furnaces EAFs are loads that are characterized by non linear time varyingand stochastic behavior Furthermore EAFs injects large amount of harmonics to the gridbesides having poor and varying power factor in different operating conditions Largevariation of reactive power consumed by an EAF leads to voltage flicker in the Point ofCommon Coupling PCC and therefore these loads are almost invariably accompanied bya Static Var Compensator SVC To prevent excessive harmonic injection to the grid associated with EAF and the Thyristor Controlled Reactor TCR of the SVC thecapacitive part of SVC is normally implemented by means of notch filters To performstudies for the design of these filters the whole system including EAF SVC and the restof system must be accurately modeled in the frequency domain Any error in modelingresults in improper filter design and consequently inadequate performance In this thesis different EAF and TCR models in frequency domain are examined A new model isproposed for EAF to cover its behavior in all operating conditions Different notch filters including Pi type and C type filter are studied Design criteria for designing Pi type filtersare mentioned All the above analyses are applied to a case study regarding upgradingEAFs in Mobarakeh Steel Complex in Isfahan Various simulations are carried out tocompare the performance of different topologies

حميد رضا كارشناس

مهدي معلم

اكبر ابراهيمي ، يدالله ذاكري