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Impacts of New Suggested Ferroresonance Limiter on the Stability Domain of Ferroresonance Modes in Power Transformers Considering Metal Oxide Surge Arrester Effect
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نویسنده
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Radmanesh H. ,Rostami M.
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منبع
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iranian journal of electrical and electronic engineering - 2011 - دوره : 7 - شماره : 4 - صفحه:283 -291
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چکیده
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This paper studies effect of new suggested ferroresonance limiter on controlling ferroresonance oscillation in the power transformer including metal oxide surge arrester (mosa). a simple case of ferroresonance circuit in a three phase transformer is used to show this phenomenon and three-phase transformer core structures including nonlinear core losses are discussed. the effect of mosa and ferroresonance limiter on the onset of chaotic ferroresonance and controlling chaotic transient in a power transformer including nonlinear core losses has been studied. it is expected that these ferroresonance limiter generally cause into ferroresonance control. simulation is done on a power transformer rated 50 mva, 635.1 kv with one open phase. the magnetization characteristic of the transformer is modelled by a single-value two-term polynomial with q=7, 11. the core losses are modelled by third order in terms of voltage. the simulation results reveal that connecting the mosa and ferroresonance limiter to the transformer, exhibits a great impact on ferroresonance overvoltages. significant effect on occurring chaotic ferroresonance, the range of parameter values that may lead to overvoltage and magnitude of ferroresonance overvoltage is obtained and showed.
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کلیدواژه
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Metal Oxide Surge Arrester ,New Suggested Ferroresonance Limiter ,Control of Chaos ,Bifurcation ,Ferroresonance ,Power Transformers ,Nonlinear core losses effect
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آدرس
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Aeronautical University of Science& Technology, Department of Electrical Engineering, ایران, shahed university, Department of Electrical Engineering, ایران
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پست الکترونیکی
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rostami@shahed.ac.ir
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Authors
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