K E E / O P AM A R T I N Z L Á M A L

Denoising of UHF Signalsbased on RBPF and theLocalization of PD Sourcesusing FDTD Method inPower Transformer

K E E / O P AM A R T I N Z L Á M A L

Denoising of UHF Signalsbased on RBPF and theLocalization of PD Sourcesusing FDTD Method inPower Transformer

Well, I can help you with that...

Still no idea?

Do you know what isPartial Discharge?

Self accelerating process (it just goes worse).

Discharge ⇒ material deterioration ⇒ more intense discharge... :-(

It's within solid insulation system and therefore not visible!

But, how to find it in theinternal structure of the

Power Transformer?

Time-difference look-uptable method FTW*!

#1 #3

#2

* For The Win

FDTD s imulat ionPD posit ion

UHF s ignals

Simulation

Modeling&

S T E P # 1

The result is time-difference look-up table

Experiments

S T E P # 2

Problem?

Solution?Denoising - particle filter

Extraction of arrival time

Ok, let's RECAP

We already have look-up table

We already have measurement data

Final step? Compare all the things!

Step #1

Step #2

CONCLUSION

But, it's fast

And relatively accurate

Sensors location may be crucial

You need simulation and measurement

(just comparison)

(371 mm vs. 617 mm - 40 %)

Thank youfor listening

I WILL NOW ANSWER ANY QUESTIONS YOU MAY HAVE

@mrtnzlml zlml.cz