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STUDENT :SYAHIRA RAIHAN BT OON
SUPERVISOR :DR MOHD TAUFIQ B. ISHAK
CHAIRMAN :DR KOK BOON CHING
PANEL :PM. DR ZAINAL ALAM B. HARONDR DUR MUHAMMAD SOOMRO
MASTERS PROJECT ( PS1)
PRESENTATION:LIFETIME PREDICTION AND ESTIMATION
OF POWER TRANSFORMER
UNIVERSITI TUN HUSSEIN ONNMALAYSIA
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CONTENT
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INTRODUCTION
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STATEMENT OF THE PROBLEM
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OBJECTIVE OF THE RESEARCH
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SCOPE OF THE RESEARCH
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LITERATURE REVIEW
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LITERATURE REVIEW
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COMPARISON ESTIMATED DISTRIBUTION
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COMPARISON ESTIMATED DISTRIBUTION
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COMPARISON ESTIMATED DISTRIBUTION
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LITERATURE REVIEW
Journal Objective Method Outcome
Transformer LifePrediction Using Data from
Units Removed from
Service and Thermal
Modeling
i. Predict the transformer lifeby using insulating paper
from scrapped transformers
ii. Analyze for degree of
polymerization (DP)
Condition assessment:i. Dissolve Gas Analysis
ii. Degree of
polymerization
Condition based replacement meansthat statistical analysis of failure rates is
not helpful in modeling lifetimes, but
data from scrapped and failed
transformers has been used to
demonstrate that age-related failures
Evaluating Mean Life of
Power System Equipment
With Limited End of Life
Failure Data
i. Introduce two methods to
estimate the mean life of a
power system equipment
ii. Use information data
including both died and
surviving components
i. Normal Distribution
method
ii. Weibull distribution
method
The estimates of the mean life using the
normal and Weibull distribution models
are close in this case. Comparison
between the estimates using the
presented methods and the sample
mean technique, the presented methods
provide more reasonable results
Prediction of Remaining
Life of Power Transformers
Based on Left Truncated
and Right Censored
Lifetime Data
i. Prediction of the remaining
life of power transformer.
ii. Use left truncated and right
censored data
i. Log-location-scale
distribution for lifetime
model for left truncated
and right censored data.
ii. Weibull distribution
method
Better predictive model that would
more accurately predict individual
lifetimes by using environmental
information for the individual
transformers
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METHODOLOGY
General Block Diagram of
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FLOWCHART FOR PS1 PROGRESSION
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FLOWCHART FOR PS2 PROGRESSION
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ASSESSING END OF LIFE FAILURE PROBABILITY
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PROBABILITY DISTRIBUTION METHOD
Relationship between failure rate and age for aNormal probability distribution
,
.
Relationship between failure rate and age for aWeibull probability distribution
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NORMAL DISTRIBUTION METHOD
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NORMAL DISTRIBUTION METHOD
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NORMAL DISTRIBUTION METHOD
least square method to estimate the mean life
and standard deviation Ageyear
the sum of squares ofall errors
MeanStandardDeviation
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WEIBULL DISTRIBUTION METHOD
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WEIBULL DISTRIBUTION METHOD
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WEIBULL DISTRIBUTION METHOD
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WEIBULL DISTRIBUTION METHOD
Initial
and
obtain
Obtain byusing.
Gammafunction
StandardDeviation
Mean
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EXPECTED RESULT
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CONCLUSION
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REFERENCE
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REFERENCE
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