Special combined transformer for 35KV wind power
A combined transformer and wind power technology, applied in the direction of transformer/inductor coil/winding/connection, etc., can solve the problems of reducing product performance, increasing air, load loss, increasing transformer manufacturing cost, etc., to reduce manufacturing cost and insulation size. The effect of reducing and improving product performance
Inactive Publication Date: 2013-03-27
JIANGSU MINGAN ELECTRIC
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- Application Information
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Problems solved by technology
[0003] Due to the unreasonable design of the traditional transformer, its large volume and heavy weight increase the manufacturing cost of the transformer, increase the empty and load loss, and reduce the product performance.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0009] This embodiment will be further described in detail below.
[0010] A 35KV wind power combined transformer according to the present invention includes an iron core, a low-voltage winding and a high-voltage winding, the turn insulation thickness of the copper wire on the low-voltage winding is 0.2-0.4mm, and the turn insulation thickness of the copper wire on the high-voltage winding is The insulation thickness is 0.2-0.4mm. In this embodiment, the turn insulation thickness of the copper wires on the low-voltage winding and the high-voltage winding is preferably 0.3mm. Because of the small and medium-sized power transformers of 3150KVA and below, the maximum voltage per turn is 31V. The induced voltage is 62V, far less than the 0.45mm thick turn insulation withstand voltage of 10KV, while the maximum impulse voltage of the turn insulation of 35KV grade products is 0.85KV, calculated according to the maximum impact gradient of the oil passage 30%, and the minimum number of...
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Abstract
The invention relates to the technical field of power transmission equipment, and particularly relates to a special combined transformer for 35KV wind power. The special combined transformer comprises an iron core, a low-voltage winding and a high-voltage winding, wherein the turn insulation thickness of a copper wire on the low-voltage winding is 0.2-0.4mm, the turn insulation thickness of a copper wire on the high-voltage winding is 0.2-0.4mm, and latticed and glued insulating paper are arranged between the layers of the low-voltage winding and between the layers of the high-voltage winding. The special combined transformer has the advantages that by adoption of the structure, after the longitudinal insulation is adjusted, the test for frequency-doubling voltage resistance, industrial-frequency voltage resistance and lightning impulse can be born; and simultaneously due to reduction of the longitudinal insulation size, the geometric dimension of the transformer is greatly reduced, the manufacturing cost of the transformer is reduced, the loss for no load and load is reduced, and the performance of a product is improved.
Description
technical field [0001] The invention relates to the technical field of power transmission equipment, in particular to a combined transformer dedicated to 35KV wind power. Background technique [0002] my country is very rich in wind resources, and the average annual utilization hours of wind turbines ranks among the top in the country. The development of wind power generation has unique climatic conditions. Since 2005, wind power, as a clean energy production method, has developed rapidly in my country. Since combined transformers dedicated to wind power are mostly sent to the northeast, northwest and north China, factors such as long distances and poor road conditions have put forward higher requirements on the overall quality of combined transformers. [0003] Due to the unreasonable design of the traditional transformer, its large volume and heavy weight increase the manufacturing cost of the transformer, increase the empty and load loss, and reduce the product performan...
Claims
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Inventor 曹洪新
Owner JIANGSU MINGAN ELECTRIC