Original scientific paper

Low voltage single-phase excitation for power transformers

Zhan Yangang ; Baoding Tianwei Baobian Electric

Abstract

To verify that the inner design and its performance are satisfactory and that there are no failures in the winding insulation system and core displacement during long-trip transport, we need to do several tests such as SFRA test or single-phase excitation test. Defect in magnetic core structure, shifting of windings, failures in turns to turns or block to block insulation or problems in tap changers are conditions that change the effective reluctance of the magnetic circuit, thus affecting the current required to establish flux in the core. In order to deal with these problems, we would use low voltage single-phase excitation for power transformers. This is also a kind of auxiliary judgment method to guide us about the condition of transformer.

Keywords

low voltage single-phase excitation; core type transformer; auxiliary judgment; magnetic flux

Hrčak ID:

185467

URI

https://hrcak.srce.hr/185467

Publication date:

8.10.2014.

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