Power Former 2003

ByPavan Mulani

Kamal SinghViranchi Kumar Mishra

Chandra PrakashPrashant Makwana

Samir SarvadiJawahar K

GET-APL

Objective

To introduce a new device to provide direct connection to the high-voltage power grid without using a step-up transformer.

04/11/23 2Powerformer

Contents Introduction Construction Cable construction Cooling system Fault current behavior Merits and demerits Conclusion


What is powerformer ?

Powerformer is same as generator but only difference in construction.

GeneratorTransform

erPowerforme

r


Conventional Vs. Powerformer

Conventional system

System with Powerformer

1. Generator2. Generator

Circuit breaker3. Surge arrestor4. Transformer5. Circuit breaker


ConstructionPowerformer Conventional

Stator winding:

1.High voltage cable 2.XLPE insulation3.Only Cylindrical winding

Stator winding:

1. Copper bars2. Paper insulation3. Rectangular

Rotor winding is same in both the systems


04/11/23 Powerformer 7

Cable Construction

1) Conductor2) Inner semi conductor layer3) XLPE insulation4) Outer semi conducting layer04/11/23 8Powerformer

Nature of electric field


Cooling system

Cooling done at zero potential Tap water can be usedXLPE pipes used axiallyNo radial ductLess risk of short circuit


Fault current behavior



Currently used


MeritsHigh efficiencyLow lossMore reliableLow environment impact

Demerits Occupies Large volume More expensive


Conclusion

Direct connection to power grid without using transformer

Can generate power upto 220 kVSlot size decreases due to less insulationEconomical, reliable and more efficientvery clean and compact power plant


Thank you


Power Former 2003

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