Double-ring on-load tap changer with ultrahigh impedance of 110 kV

A voltage regulating transformer, 10,000-volt technology, applied in the field of transformers, can solve the problems of reducing the size and weight of transformers, polysilicon steel sheets, consumption, etc.
CN101968994AInactive Publication Date: 2011-02-09JIANGSU SUNEL TRANSFORMER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU SUNEL TRANSFORMER
Publication Date
2011-02-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a double-ring on-load tap changer with the ultrahigh impedance of 110 kV, comprising an iron core, a low-voltage coil, a high-voltage tap coil and a high-voltage coil. The low-voltage coil, the high-voltage tap coil and the high-voltage coil are sequentially arranged outside the iron core, and the high-voltage coil adopts middle wiring. The invention realizes the performance of ultrahigh impedance and low loss at a lower cost.
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Description

technical field

[0001] The invention belongs to the field of transformers and relates to a 110,000-volt ultra-high impedance double-circle on-load voltage regulating transformer. Background technique

[0002] According to the national standard "GB / T6451-2008 Oil-immersed Power Transformer Technical Parameters and Requirements", for the 110,000-volt conventional impedance double-turn on-load tap-changing transformer commonly used in power systems, the impedance voltage percentage under the high-voltage-low-voltage operation mode Usually 10.5%.

[0003] With the economic development of the eastern coastal developed areas and the rapid increase of residents' demand for electricity, the 110,000-volt transformers in the original power system in this area are increasingly operating at higher loads or full loads, which will inevitably make the operation of the power grid safer. Hidden dangers have caused the single nominal capacity of the transformer to increase day by day, that i...

Claims

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