Distribution transformer for conversion between 10KV and 20KV
A technology for distribution transformers and transformers, applied in the field of transformers, can solve the problems of rising temperature of transformers, insignificant energy-saving effect, large no-load loss, etc., and achieve the effects of energy saving, small loss, and loss reduction.
Inactive Publication Date: 2013-04-03
JIANGSU MINGAN ELECTRIC
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Problems solved by technology
[0002] At present, "11" type combined transformers are generally used in the market to realize the voltage conversion between 10KV and 20KV. This type of transformer not only has a large no-load loss, but the energy-saving effect is not obvious, but also has a large no-load current, which causes a large loss to the line. , causing the temperature of the transformer to rise rapidly
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[0011] The present invention will be further described below in conjunction with specific embodiment:
[0012] A 10KV and 20KV conversion distribution transformer, the transformer includes an iron core 1, a low-voltage coil 2 and a high-voltage coil 3 wound outside the iron core, and the high-voltage coil 3 is divided into an upper half coil 4 and a lower half coil 5 two parts, the first half of the coil 4 is left-handed, the lower half of the coil 5 is right-handed, the upper half of the coil 4 and the lower half of the coil 5 each bear 10KV voltage, the first half The segment coil 4 and the lower half segment coil 5 are used in series for 20KV and in parallel for 10KV.
[0013] The distance between the first half coil 4 and the lower half coil 5 is 20 cm to avoid interference between the two coils and reduce loss.
[0014] The iron core 1 is made of amorphous alloy material, which has low loss, low current and low temperature rise of the transformer.
[0015] The first-hal...
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The invention discloses a distribution transformer for conversion between 10KV and 20KV. The transformer comprises an iron core, a low voltage coil and a high voltage coil, wherein the low voltage coil and the high voltage coil are intertwined on the exterior of the iron core; the high voltage oil is divided into two parts: an upper half coil section and a lower half coil section; the upper half coil section is intertwined leftward; the lower half coil section is rightward; the upper half coil section and the lower half coil section bear 10KV voltage respectively; the upper half coil section and the lower half coil section are connected in series for 20KV and in parallel for 10KV; the space between the upper half coil section and the lower half coil section is 20cm; the iron core is made from an amorphous alloy material; and the series connection and the parallel connection between the upper half coil section and the lower half coil section are realized through an off-circuit tap-changer. With the adoption of the distribution transformer for conversion between 10KV and 20KV, not only is the energy saved, but also the losses of lines are reduced; in addition, as the iron core adopts an unalloy material, the losses are low and the current is small; and therefore, the temperature rise of the transformer is very low.
Description
technical field [0001] The invention belongs to the field of transformers, in particular to a 10KV and 20KV conversion and distribution transformer. Background technique [0002] At present, "11" type combined transformers are generally used in the market to realize the voltage conversion between 10KV and 20KV. This type of transformer not only has a large no-load loss, but the energy-saving effect is not obvious, but also has a large no-load current, which causes a large loss to the line. , causing the temperature of the transformer to rise rapidly. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the invention provides a 10KV and 20KV conversion and distribution transformer. [0004] A 10KV and 20KV conversion distribution transformer, the transformer includes an iron core, a low-voltage coil and a high-voltage coil wound outside the iron core, and the high-voltage coil is divided into two parts: an upper half coil and a lower half...
Claims
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IPC IPC(8): H01F29/02H01F27/30
Inventor 曹洪新
Owner JIANGSU MINGAN ELECTRIC