Share

Request for transformer failure survey to the HVDC systems

17/12/2012

AG-04 announces the request for transformer failure survey to the HVDC systems in 2011 and 2012

The QUESTIONNAIRE ON PERFORMANCE OF THYRISTOR VALVE CONVERTER TRANSFORMERS can be downloaded here.

This questionnaire is addressed to Users of HVDC thyristor valve converters for obtaining information and data on converter transformers operating experience. Last survey was performed in 2011 by AG B4-04. The failures for the years 2009 and 2010 were reported.

Please report failures for the years 2011 and 2012 and any other failure for the previous years which may not have been reported.

Your response will be of considerable value to CIGRE AG B4-04 in fulfilling its mandate. Your answers are essential to study committees A2 and B4 for trying to establish areas within converter transformers that still require additional attention. These areas could imply design, construction, testing, operation and/or maintenance aspects.

The survey addresses all HVDC thyristor valve converter transformers for system rated power as low as 50 MW.

This questionnaire has two parts:

 Part 1, -- This part relates to the characteristics of the transformers and the related HVDC system.

 Part 2, -- This part report applies only to Transformer Failures that were not reported previously.

All regular members, please, follow up with all the HVDC systems in your areas. It is also important, just the case, to report NO FAILURES. Therefore if a system did not have any failure you can send AG-04 convenor a simple message saying NO FAILURES in 2011 and 2012.

PLEASE RETURN THE SURVEY BY   Feb 15, 2013

Thank you