Frequency Response Analysis for Diagnosis of Power Transformers

[JLVC]

Hi everybody,

Do you have experience with the FRA method for detection of deformations in power transformers?

If you have had experience with this method, I would appreaciate very much your comments.

Best regards,
JLVC

 

[tem1234]

You can look at the thread

thread238-214242

There's other thread about this, just search for "FRA" on the forum

 

[ScottyUK]

It is a good technique for detecting winding movement after a heavy fault but you must get a 'fingerprint' done when the transformer is in good condition for it be any use. You can't just apply FRA after a fault to assess the transformer condition.

You might want to try Doble in the UK and see if John Lapworth is still working for them. He was one of the UK's leading experts on the technique.


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If we learn from our mistakes I'm getting a great education!

 

[prc]

Yes.John is still working with Doble,UK.You can get the latest on SFRA -technique,interpretation etc from a CIGRE Study committee report- Technical Brochure 342 of 2008-04 "Mechanical condition assessment of trfs using SFRA".You can get it from CIGRE on-line library and book store -

http://www.e-cigre.org.If

you are a CIGRE member (you can with an annual membership fee of appxox USD 100)you can get it free or purchase on-line.