Presentasi_Trafo

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Online System Monitoring and Effect of Harmonics on Power Transformer Loss of Life Using S-Transform Oleh : Dimas Okky Anggriawan 2213201018 Topic for Candidate Thesis

Transcript of Presentasi_Trafo

Page 1: Presentasi_Trafo

Online System Monitoring and Effect of Harmonics on Power Transformer

Loss of Life Using S-Transform

Oleh :Dimas Okky Anggriawan2213201018

Topic for Candidate Thesis

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Online System Monitoring

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DFT

dtftetxfX 2).()( FT Kontinyu

FT Diskrit

1

0

)]2sin()2)[cos(()(N

n Nnmj

NnmnxmX

1

0

2

)()(N

n

Nmnj

enxmX

imajiner

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mXmXmXmX)(

)(tan)()()( 122

1

0

)2cos()()(N

nriil N

nmnxmX

1

0

)2sin()()(N

nimajiner N

nmnxmX

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STFT

n

jwnemnwnxwmX ][][),(

n N

nmjNnmmnwnxwmX ]]2sin[]2][cos[[][),(

dtemtwtxwmX jwt)()(),( STFT Kontinyu

STFT Diskrit

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S-Transform

S – Transform Diskrit

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m

enmGNT

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),(,

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),( nm

enmG

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Transformer Losses

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Wattloss, total

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Transformer Losses

max

1

22

h

h R

hRECEC I

IhPP

max

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28.0

h

h R

hROSLOSL I

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A Current, Rated A h,order harmonicat Current Wlosses,current eddy rated

OSL

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REC

PhIIP

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Top Oil Temperature

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Hot Spot Temperature And Aging

Factoron Accelarati Aging AAF

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References

Rodriguez, M.V., Troncoso, R.J., Perez, A.G., “Detection and Classification of Single and Combined Power Quality Disturbances Using Neural Networks” IEEE Transactions on Industrial Electronics, Vol. 61, No.5., 2014

Fernandes, R.A.S., Silva, I.N.D., Oleskovics, M., “Load Profile Identification Interface for Consumer Online Monitoring Purposes in Smart Grids” IEEE Transactions on Industrial Informatics, Vol. 9, No.3., 2013

He, S., Li., K., Zhang., “A Real-Time Power Quality Disturbances Classification Using Hybrid Method Based on S-Transform and Dynamics”., IEEE Transactions on Instrumentation and Measurement, Vol. 62, No.9., 2013

Taheri, S., Taheri, H., Fofana, Issouf., Hemmatjou, H., Gholami, A., “ Effect of Power System Harmonics on Transformer Loading Capability and Hot Spot Temperature”., Electrical and Computer Engineering Conference ., 2012

Said, D.M., Nor, M., “Effect of Harmonics of Distribution Transformers”., Power Engineering Conference., 2008

Elmoudi, A., Lehtonen, M., Nordman., “Effect of Harmonics on Transformers Loss of life”., IEEE International Symposium on Electrical Insulation., 2006

R.G, Stockwell., “Why Use S- Transform”., Field Institute Communication