Distribution transformer for simulating short circuit state of winding
A technology for short-circuiting of distribution transformers and windings, applied in transformers, variable transformers, transformer/inductor components, etc., can solve the problem of limited inter-turn winding short-circuit status, limited number of lead bushings, and simulation of short-circuit status of distribution transformer windings. Insufficient accuracy and other problems, to achieve the effect of accurate short-circuit state and improve accuracy
A technology for short-circuiting of distribution transformers and windings, applied in transformers, variable transformers, transformer/inductor components, etc., can solve the problem of limited inter-turn winding short-circuit status, limited number of lead bushings, and simulation of short-circuit status of distribution transformer windings. Insufficient accuracy and other problems, to achieve the effect of accurate short-circuit state and improve accuracy
CN106816291AActive Publication Date: 2017-06-09YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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[0029] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0030]The distribution transformer is a power transformer that operates in the distribution network with a voltage level of 10-35KV and a capacity of 6300KVA or below to directly supply power to end users. It can transform the high voltage in the high voltage power grid into a low voltage suitable for industrial and domestic use. . Generally, a distribution transformer is composed of an iron co...
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The invention discloses a distribution transformer for simulating a short circuit state of a winding. The distribution transformer comprises an iron core, a low-voltage winding and a high-voltage winding, wherein the low-voltage winding and the high-voltage winding are sequentially arranged on the iron core from inside to outside; a plurality of winding interlayer taps are arranged on different wire layers of the high-voltage winding; a plurality of winding inter-turn taps are arranged on different winding turns of a same wire layer; a shell is arranged outside the iron core, the low-voltage winding and the high-voltage winding; four lead casings are fixedly arranged on the shell; leads of the low-voltage winding and the high-voltage winding are led out of the shell via corresponding lead bushings respectively; a first spiral ranging conductive rod and a second spiral ranging conductive rod corresponding to the winding interlayer taps and the winding inter-turn taps respectively are fixedly arranged on the shell. By adopting the distribution transformer, short connection parts of the winding interlayer taps and the winding inter-turn taps can be precisely controlled, and in addition, the lengths of the conductive rods can be changed; the distribution transformer is simple in structure, flexible to operate, high in accuracy of simulation experiment results, and applicable to popularization and application.
Description
technical field [0001] The invention relates to the technical field of power system experiment devices, in particular to a distribution transformer for simulating a winding short-circuit state. Background technique [0002] The distribution transformer is a power transformer operating in the distribution network with a voltage level of 10-35KV and a capacity of 6300KVA or below, which directly supplies power to end users. The secondary voltage of the distribution transformer is about 400V. A double-winding structure composed of windings. Distribution transformers are widely used in industrial and mining enterprises, urban streets and remote villages. Due to their wide range of applications, once a failure occurs, it will bring major hidden dangers to the safe operation of the power grid, thereby causing huge losses and inconvenience to industrial and agricultural production and people's lives. . [0003] At present, the more common distribution transformer faults are cause...
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Patent Timeline
09 Jun 2017
Publication
CN106816291A
- IPC
- H01F27/30; H01F27/04; H01F27/32; H01F27/28; H01F29/02; G01R1/20
- CPC
- H01F27/04; H01F27/2876; H01F27/306; H01F27/324; H01F29/02; G01R1/20
- Inventors
- 刘光祺; 赵毅