Energy consumption protection transformer for flexible direct-current power transmission
A flexible direct current transmission and transformer technology, applied in the direction of transformer/inductor cooling, transformer/inductor components, transformer/inductor coil/winding/connection, etc.
Active Publication Date: 2020-10-23
山东输变电设备有限公司 +1
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Problems solved by technology
[0003]
For this special purpose, there is no transformer that meets the above needs in the market. This is the first time to meet this functional requirement, so there is an urgent need for an energy consumption protection transformer with high overload tolerance and impact resistance.
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Embodiment Construction
[0023] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0024] Such as figure 1 Shown is a schematic diagram of the overall structure of the energy consumption protection transformer of the embodiment of the present invention. An energy consumption protection transformer for flexible direct current transmission, comprising: an oil tank 6, the shell of the oil tank 6 is provided with a low-voltage bushing 1, a high-voltage bushing 2, a high-voltage neutral point bushing 3, a radiator 4, and an oil storage Cabinet 5, the inside of the fuel tank 6 is provided with: three high-voltage windings, three low-voltage windings and winding insulators. The installation positions and connection methods of the above-mentioned components are all in the prior art, and will not be described in detail here.
[0025] The high-voltage windings and low-voltage windings are arranged in strict equal ampere-turn arrangement, and...
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The invention relates to an energy consumption protection transformer for flexible direct-current power transmission, which comprises an oil tank, a low-voltage bushing, a high-voltage bushing, a high-voltage neutral point bushing, a radiator and an oil storage cabinet are arranged on a shell of the oil tank, and three high-voltage windings, three low-voltage windings and a winding insulating partare arranged in the oil tank; the high-voltage windings and the low-voltage windings are strictly arranged in an equal ampere-turn manner, and the height difference of each subarea is smaller than orequal to 2 mm; the gear number of the oil gap cushion blocks of the high-voltage windings and the low-voltage windings is 1.5-2 times larger than that of a conventional gear number. And a wedge-shaped cushion block is arranged at the wire pie transposition S bend. According to the invention, special design is carried out according to the operation condition of the energy consumption protection transformer, the heat dissipation capability of the winding is adjusted, and the overload endurance capability and the impact resistance capability are improved.
Description
technical field [0001] The invention belongs to the technical field of power transformers, and in particular relates to an energy consumption protection transformer for flexible direct current transmission. Background technique [0002] In the flexible DC transmission line, when the line fails, in order to protect the line system and equipment, it is necessary to transfer the energy in the line to the energy dissipation resistor in a very short time and release it. The energy consumption protection transformer used to connect the energy dissipation resistor is a special-purpose transformer different from conventional transformers. It has large capacity, low impedance, no need for voltage regulation, long-term no-load operation, and can withstand short-term overloads of multiple times of capacity. etc.; need to withstand 4 times the impact of current in 3 seconds, and 5 times in 2 hours. [0003] For this special purpose, there is no transformer that meets the above needs in...
Claims
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IPC IPC(8): H01F27/14H01F27/28
CPCH01F27/14H01F27/2876Y02E60/60
Inventor 谈翀张书韬林波于阳燕飞东杜迎辉董宏林胡业华杨在葆韦良斌
Owner 山东输变电设备有限公司