Online calibrating method for transformer sudden-change pressure relay

The invention relates to an online calibrating method for a transformer sudden-change pressure relay. The online calibrating method includes the steps of (1) pre-pressure verification and digital module verification; (2) sudden change detection including three steps: pre-pressure controlling, sudden...

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Bibliographic Details
Main Authors YUAN ZHIWEN, YAO YOUMING
Format Patent
LanguageChinese
English
Published 27.03.2013
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:The invention relates to an online calibrating method for a transformer sudden-change pressure relay. The online calibrating method includes the steps of (1) pre-pressure verification and digital module verification; (2) sudden change detection including three steps: pre-pressure controlling, sudden change controlling and actuation time reading; (3) air impermeability detection; and (4) trace detection. Compared with the prior art, the online calibrating method is convenient, reliable and safe to use, capable of providing powerful technical supports to field calibration of dynamic power grid measurement, and the like.
Bibliography:Application Number: CN20121408885