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Transformers Magazine, Vol. 5 No. 4, 2018.

Original scientific paper

Restoring efficiency, removing sound

Holger Herterich ; Siemens
Franz Klammler ; Siemens
Peter Hamberger ; Siemens
Gerald Leber ; Siemens

Full text: english pdf 1.652 Kb

page 92-98

downloads: 275

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Abstract

Increased renewable power generation, HVDC interconnections and geomagnetic effects all bias the AC grid with small direct currents which leads to two negative effects on transformers (theory of half-cycle saturation) increased noise and increased no-load losses. A unique solution is the DC compensation system, which is an add-on to a transformer which eliminates the DC effects. Furthermore, there are dedicated steps available, from pure detection of the problem, preparation of the transformer and measurement, all the way up to a full compensation system.

Keywords

DC bias; half-cycle saturation; geomagnetically induced currents; renewable grid effects

Hrčak ID:

214882

URI

https://hrcak.srce.hr/214882

Publication date:

9.10.2018.

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