500kv transformer shock insulation structure and installation method

Abstract

The invention provides a 500kV transformer shock insulation structure and an installation method. The shock insulation structure comprises a transformer, a foundation and a plurality of shock insulators, wherein the upper end and the lower end of each shock insulator are fixedly connected with a transformer base and the foundation respectively. The installation method of the shock insulation structure mainly includes the steps that firstly, a connecting component is installed on the foundation; secondly, the bottom of each shock insulator is fixedly connected with the connecting component; thirdly, the transformer is placed at the tops of the shock insulators, and the transformer base is fixedly connected with the shock insulators. By adoption of the 500kV transformer shock insulation structure and the installation method, a transformer body can be insulated from the foundation, the transformer can be separated from the earthquake ground movement possibly causing destruction, the earthquake energy spreading path is cut off, earthquake energy transmitted to damageable parts, such as high-tension bushings, oil conservators and low-tension bushings, at the top of the transformer is reduced as much as possible, the amplifying effect of an oil tank is offset, shock resistance of the transformer is greatly improved, and it is ensured that the transformer can still operate safely even in areas of eight to nine degrees of seismic intensity.

Description

Technical field [0001] The invention relates to the technical field of 500kY transformer seismic isolation in the power industry, and in particular to a 500kY transformer seismic isolation structure and an installation method suitable for areas with high seismic intensity of 8 to 9 degrees. Background technique [0002] For transformers installed in areas with high seismic intensity such as 8 to 9 degrees, the damage caused by sudden earthquakes to transformers and other power facilities is catastrophic, except for the high cost of post-disaster recovery, reconstruction and huge losses caused by power outages. In addition, as an important part of the lifeline project, once the power system fails or is destroyed, the resulting power interruption will not only seriously affect the normal earthquake relief work, but also may cause secondary disasters such as fires. [0003] The current common 500kY transformer is mainly composed of oil tank, iron core, winding coil, radiator, oil pill...

AI Technical Summary

Problems solved by technology

[0005] Therefore, when the existing 500kY transformer and its installation method deal with severe vibrations such as high earthquake intensity of 8 to 9 degrees, it will undoubtedly cause a relatively severe safety test for the high-voltage and low-voltage bushings and oil conservator installed on the top of the transformer oil tank. For example, during the Wenchuan Earthquake and the Ya’an Earthquake in China, the sudden violent vibrations caused problems such as rupture, damage, and oil leakage of high-voltage and low-voltage bushings and oil conservators on many transformers, resulting in long-term power outages for transformers. The various losses caused by this cannot be accurately calculated.

After investigation, in view of the current problem of high earthquake vulnerability of transformers, major transformer manufacturing companies at home and abroad have been unable to continue to improve the overall seismic level of transformers by changing the structure of high-voltage and low-voltage bushings and oil conservators.

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