Extra-high voltage transformer and iron core assembly thereof

Abstract

The invention discloses an iron core assembly. The iron core assembly comprises an iron core clamping piece which is horizontally arranged, and two lateral columns which are arranged in parallel, wherein the extension directions of the axes of the lateral columns are vertical to the extension direction of the iron core clamping piece, two core columns are arranged in parallel between the two lateral columns, the axes of the core columns are parallel to the axes of the lateral columns, a cooling oil duct is arranged at the side part of each core column, and the extension directions of the cooling oil ducts are consistent with the extension directions of the core columns. In the work process, the cooling oil duct can isolate a frame formed between adjacent lateral columns or core columns and iron core clamping pieces into a solo magnetic circuit system, thereby effectively controlling the main magnetic flux distribution of a transformer, avoiding a local superheating phenomenon caused by superhigh local magnetic flux density of an iron core, and effectively increasing the whole operating continuity and reliability of the transformer. The invention also discloses an extra-high voltage transformer which applies the iron core assembly.

Description

technical field [0001] The invention relates to the technical field of supporting equipment for UHV transformers, in particular to an iron core assembly. The invention also relates to an ultra-high voltage transformer using the iron core assembly. Background technique [0002] UHV transformer is a very common power equipment. With the continuous improvement of the use demand, its working performance has attracted more and more attention from people. [0003] At present, in the main structure of the existing UHV transformer, due to the large capacity and high voltage level of the UHV autotransformer itself, and the large amplitude of the main and leakage magnetic flux of the equipment, the magnetic flux distribution is relatively complicated. During the operation of the equipment , it is very easy to cause local overheating of equipment components, causing many hidden dangers to the normal operation of related equipment components, and thus affecting the long-term safe opera...

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Problems solved by technology

[0003] At present, in the main structure of the existing UHV transformer, due to the large capacity and high voltage level of the UHV autotransformer itself, and the large amplitude of the main and leakage magnetic flux of the equipment, the magnetic flux distribution is relatively complicated. During the operation of the equipment , it is very easy to cause local overheating of equipment components, causing many hidden dangers to the normal operation of related equipment components, which in turn affects the long-term safe operation of the transformer

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