Open AccessExperiments and simulation analysis of 500kV single-phase three-column transformer in No-load under DC bias
Author(s) -
Junshuang Zhang,
L Haiming,
T Wanyi,
Lianguang Liu,
Ming Yang Li
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1585/1/012014
Subject(s) - dc bias , transformer , autotransformer , electrical engineering , single phase , vibration , biasing , control theory (sociology) , engineering , materials science , acoustics , voltage , physics , computer science , distribution transformer , control (management) , artificial intelligence
The DC-bias experiments were carried out on two identical single-phase autotransformers which parameters are 250MVA/500kV. The aim of the experiments was to test the ability of transformers for withstanding DC bias. The variation laws of the electrical quantity, the temperature rise, vibration with the increasing DC current under no-load are obtained. The effective value of the exciting current under DC bias is much higher than the normal no-load exciting current. The reference for the DC bias experiments of large transformers can be provided through this method.