Underground transformer substation system

A technology for underground substations and cooling systems, applied in substations, closed substations, cooling/ventilation of substations/switchgear, etc., can solve problems such as high operation and maintenance costs, difficulty in handling, impact on safety and reliability, and achieve investment And operation and maintenance costs are low, reducing the chance of oil leakage and improving reliability

Inactive Publication Date: 2012-07-11
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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AI Technical Summary

Problems solved by technology

[0002] The oil-immersed transformer in the existing underground substation system is connected to the cooling system on the ground through an oil-water heat exchange device. Generally, water-cooled cooling is used, which has high investment, high operation and maintenance costs, short life, and high noise. If there is leakage, it will threaten the transformer. Disadvantages such as safe operation
If a high-voltage oil tank transformer is used, that is, the oil storage tank and cooling device of the transformer are installed on the ground, the transformer oil tank installed underground will withstand high voltage, and its oil tank and seal need special design. performance and reliability are affected

Method used

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  • Underground transformer substation system
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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing.

[0018] see figure 1 , the figure shows an underground substation system of the present invention, including an underground substation body 100, the underground substation body 100 includes an oil-immersed transformer 1, the oil-immersed transformer 1 is connected to a cooling system 2 located on the ground, the oil An oil-oil heat exchanger 3 is also connected between the immersed transformer 1 and the cooling system 2 .

[0019] The cooling efficiency of transformer oil is about half of that of water, but the original oil-water cooler is often made into a double-pipe structure to prevent water seepage, and the cooling efficiency is not high. The oil-oil heat exchanger 3 in the present invention does not have this problem, so Made into a plate structure, the cooling efficiency is improved by increasing the heat exchange area, and the heat energy can be effectively brought ...

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Abstract

The invention discloses an underground transformer substation system, which comprises an underground transformer substation body, wherein an oil immersing transformer is arranged in the underground transformer substation body and is connected with an overground cooling system, and an oil-oil heat exchanger is also connected between the oil immersing transformer and the cooling system. The transformer and the cooling system are divided into two independent oil flow systems through the oil-oil heat exchanger, the seepage caused by high pressure bearing by an oil tank is avoided, meanwhile, cooling water is not needed, the transformer oil is adopted, and the safety and the reliability are realized.

Description

technical field [0001] The invention relates to the field of underground substations. Background technique [0002] The oil-immersed transformer in the existing underground substation system is connected to the cooling system on the ground through an oil-water heat exchange device. Generally, water-cooled cooling is used, which has high investment, high operation and maintenance costs, short life, and high noise. If there is leakage, it will threaten the transformer. disadvantages such as safe operation. If a high-voltage oil tank transformer is used, that is, the oil storage tank and cooling device of the transformer are installed on the ground, the transformer oil tank installed underground will withstand high voltage, and its oil tank and seal need special design. performance and reliability are affected. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art and provide an underground substation system, whi...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H02B7/08H02B1/56
Inventor何维国杜成刚张宇蒋心泽陆如胡超李谨
OwnerSHANGHAI MUNICIPAL ELECTRIC POWER CO