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Single-phase ultra-high-capacity nuclear power station transformer

A transformer and single-phase technology, applied in the field of single-phase super-capacity generator transformers, can solve problems such as unreported operation technology, and achieve the effects of increasing lead wire layout space, good shielding effect and reducing loss.

Active Publication Date: 2012-01-11
TBEA SHENYANG TRANSFORMER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mature manufacturing and operation technology of single-phase 700MVA / 500kV transformers at home and abroad have not been reported yet.

Method used

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  • Single-phase ultra-high-capacity nuclear power station transformer
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Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0047]The ultra-large capacity generator transformer of the present invention takes a single-phase 700MVA / 500kV generator transformer as an example, which has a high-voltage bushing, a low-voltage bushing, a high-voltage neutral point bushing, an oil storage tank, an upper fuel-saving tank, a lower fuel-saving tank, a cooling device and No-load switch, wherein: the upper fuel tank 7 and the lower fuel tank 6 are provided with a single-phase four-column iron core structure, and the two main-column cores of the single-phase four-column core 14 are respectively covered with high and low voltage windings, and the two high and low voltage windings are connected in parallel The two-column low-voltage windings are all at the upper end, and are connected by copper bars 35 to form a low-voltage double-column parallel structure; the high-voltage bushing 2 is directly dr...

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Abstract

The invention relates to a single-phase ultra-high-capacity generator transformer. The single-phase ultra-high-capacity generator transformer is provided with high-voltage bushings, low-voltage bushings, high-voltage neutral point bushings, an oil storage cabinet, an upper oil-saving tank, a lower oil-saving tank, cooling devices and a no-load switch; each of the upper oil-saving tank and the lower oil-saving tank is internally provided with a single-phase four-column iron core structure; a high-voltage winding and a low-voltage winding are respectively sheathed on two main column iron cores of each single-phase four-column iron core, and the high-voltage winding and the low-voltage winding of two main columns of the iron core are connected in parallel; the outlet heads of the low-voltagewindings of the two main columns are arranged at the upper ends and are connected by copper bars to form a low-voltage dual-column parallel connection structure; the oil storage cabinet is arranged above the upper oil-saving tank at the side opposite to the high-voltage bushings; the cooling devices are arranged at the outer sides of one sides of the upper oil-saving tank and the lower oil-savingtank, which are provided with the high-voltage bushings and the high-voltage neutral point bushings, and are parallel to the direction of the long axis of the transformer; and the no-load switch is arranged at the low-voltage side of the transformer. The single-phase ultra-high-capacity generator transformer provided by the invention has the advantages of compact whole structure, reduced outer limit size, low loss, low noise and good shielding effect, and the partial overheat is prevented effectively; meanwhile, the support structure of the oil storage cabinet is more reasonable.

Description

technical field [0001] The invention relates to the technical field of transformer manufacturing, in particular to a single-phase ultra-large-capacity generator transformer used in large nuclear power plants. Background technique [0002] The most advanced third-generation nuclear power technology in the world, France's EPR1000 technology is becoming increasingly mature and has been gradually applied to new nuclear power plant projects. At present, there is no nuclear power plant operating performance using this technology in the world, only nuclear power plants under construction using this technology. In the world, only three nuclear power plants under construction in China, France and Finland have adopted the French EPR1000 technology. Since the single-unit power generation of the French EPR1000 nuclear power technology reaches 1.75 million kW, which is significantly higher than the single-unit power generation of the second-generation nuclear power technology of 1 milli...

Claims

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Application Information

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IPC IPC(8): H01F30/10H01F27/14H01F27/28H01F27/29H01F27/36
Inventor 钟俊涛孙树波谈翀
Owner TBEA SHENYANG TRANSFORMER GRP CO LTD
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