Patent · US Active

Method and device for testing a tap changer of a transformer

US10768233B2 · kind B2 · utility

0Cited by
3References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 29, 2015
Grant dateSep 8, 2020
Priority date—
Expiry dateApr 28, 2036

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01H2009/0061
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

The following steps are performed in order to test a tap changer of a transformer which tap changer is designed to change a transmission ratio of the transformer: generating a test signal which is supplied to a winding of the transformer and to the tap changer, repeatedly actuating the tap changer in order to change the transmission ratio with each actuation, determining a curve of an electrical measurement variable (I; I1; I2) of the transformer over time (t) for each actuation of the tap changer depending on the test signal filtering the curves in order to prevent at least one of the curves from being output outputting the filtered curves.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.