power transformers basic ppt

7/27/2019 Power Transformers baSic ppT

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Power Transformers


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INTRODUCTION OF POWER

TRANSFORMER

They have rating above 200 kva andused in generating station andsubstation used for power

transmission line for stepping up andstepping down the voltage.

They may be either single phase orthree phase unit.


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CONTENTS

INTRODUCTION OF POWER TRANSFORMER

TYPES OF TRANSFORMER

TRANSFORMER FAULTS

EQIPMENTS USED FOR THE PROTECTION OF POWER

TRANSFORMER Artificial Neural Network

Neural network design

ADVANTAGE

CONCLUSION


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TYPES OF TRANSFORMER

Power transformer.

Distribution transformer.


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DETAILS OF POWER

TRANSFORMER

12500/10000 KVA.

50 hz.

132 kv (H.v. side)

6.9 kv (L.v. side)

54.7 amp (H.v. side)

1045.39 amp (L.v. side)

55 degree centigrade (max temp rise)

14706/17100 Liter (oil)


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TRANSFORMER FAULTS

Transformer faults are generally classified in to

five categories:

Winding and terminal faults

Core faults

Tank and transformer accessory faults

On-load tap changer faults Abnormal operation conditions

Sustained or uncleared external faults


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DAMAGE ON TRANSFORMER


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Artificial Neural Network

An artificial neural network(ANN) isan imitation of human neural network

An ANN is constructed by layers ofsimulated artificial neurons.

An artificial neuron is a simulation ofreal neuron


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Artificial neural networks

Inputs

Output

An artificial neural network is composed of many artificial

neurons that are linked together according to a specific

network architecture. The objective of the neural network

is to transform the inputs into meaningful outputs.


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Neural network design

The neural networkconsists of two cell

types: weight cellsand output cells.

Weight cells act aslightfilters, and the outputcells act as reporters.

The two cell types areused together to

program a desiredoutput from a setinput.


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ADVANTAGE OF NEURAL

NETWORK

pattern classification

regularity detection

image processing

speech analysis

optimization problems

robot steering

quality assurance


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CONCLUSION

According to the approximation ability of neural network,

constructing the neural network model replacing the physical

transformer model.


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power transformers basic ppt

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