CN217847642U - Ultra-large-capacity mobile transformer - Google Patents
Ultra-large-capacity mobile transformer Download PDFInfo
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- CN217847642U CN217847642U CN202221784668.6U CN202221784668U CN217847642U CN 217847642 U CN217847642 U CN 217847642U CN 202221784668 U CN202221784668 U CN 202221784668U CN 217847642 U CN217847642 U CN 217847642U
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Abstract
A super-large-capacity mobile transformer relates to the field of transformers. The transformer is designed mainly for solving the problems that the existing large-capacity transformer is large in size and difficult to meet the transportation requirement. The three single-phase transformers with the capacity of 1/3 are respectively arranged on three trailers, and the radiator is arranged at one end of each trailer; the single-phase transformer comprises an oil tank, two main columns and two side columns are arranged in an iron core of the oil tank, the upper parts of the main columns and the side columns are connected with an upper clamping piece, the lower parts of the main columns and the side columns are connected with a lower clamping piece, and a low-voltage sleeve, a switch, a relay, a pressure release valve, a high-voltage lifting seat, an oil conservator and a high-voltage sleeve are arranged on an oil tank cover; the high-voltage winding and the low-voltage winding of the two main columns form a complete high-voltage winding and a complete low-voltage winding in a parallel connection or series connection mode, and the voltage regulating winding is directly arranged on the high-voltage coil of each column or arranged on the side column. The advantage is small, convenient transportation.
Description
The technical field is as follows:
the utility model relates to a transformer field specifically relates to a portable transformer of large capacity.
The background art comprises the following steps:
the movable transformer has the advantages of convenient transportation, convenient installation, no need of occupying land for a long time and the like. When the power supply cannot be guaranteed in emergencies such as natural disasters and power transformer faults, the mobile transformer can be allocated to a transformer substation or a power plant with response requirements at any time to be put into operation quickly, and the stability of power supply is guaranteed.
With the social development, the demand for electric power is increasing, and transformers with large capacity are increasing. However, the capacity of the mobile transformer is generally below 50MVA at present, and it is difficult to meet the requirement of large-load power supply. Meanwhile, the higher the voltage and the larger the capacity, the larger the insulation excitation of the transformer, and therefore the larger the volume of the transformer. The large size of the transformer is difficult to meet the transportation requirement, and the development of the movable transformer is limited.
The invention content is as follows:
the utility model aims to solve the technical problem that a capacity is 150MVA to 540MVA, and is small, can satisfy the portable transformer of large capacity that the transportation required.
The above object is achieved by: the method comprises the steps of firstly, forming a large-capacity three-phase transformer set by three 1/3-capacity single-phase transformers, forming a movable transformer unit by a single-phase transformer and a trailer, and forming a complete three-phase movable transformer by the three movable transformer units. When the single-phase transformer operates, the high-voltage bushings of the three single-phase transformers are connected with a high-voltage overhead line, and the low-voltage bushings are connected with a low-voltage overhead line.
The single-phase transformer is connected in star or angle mode according to requirements to form a complete mobile transformer; the radiator of each single-phase transformer is arranged at one end of the trailer, so that the whole width of the transformer can be reduced.
Each single-phase transformer comprises an oil tank, two main columns and two side columns are arranged in an iron core of the oil tank, the main columns and the side columns are respectively arranged on the left side and the right side of the central line of the oil tank, and one is arranged on each of the two sides; the upper part of the main column is connected with an upper clamping piece through a nut, the upper part of the side column is connected with another upper clamping piece through a nut, a cross beam and a side beam are connected between the two upper clamping pieces, the lower part of the main column is connected with a lower clamping piece through a nut, the lower part of the side column is connected with another lower clamping piece through a nut, a pad foot and the side beam are connected between the two lower clamping pieces through nuts, and the upper clamping piece and the lower clamping piece are connected through a pulling plate to form a rigid fixing frame. The oil tank cover is provided with components such as a low-voltage sleeve, a switch, a relay, a pressure release valve, a high-voltage lifting seat, an oil conservator and the like. The high-voltage bushing is arranged on the high-voltage lifting seat, the lower parts of the high-voltage bushing and the low-voltage bushing are connected with the wire outlet ends of the high-low coils in the transformer, the switch is connected with the internal voltage regulating coils, the relay is arranged on a connecting pipe between the oil conservator and the transformer oil tank, and the pressure release valve is arranged on the transformer oil tank.
The high-voltage winding and the low-voltage winding are sleeved on the two main columns, and the high-voltage winding and the low-voltage winding of the two main columns form a complete high-voltage winding and a complete low-voltage winding in a parallel connection or series connection mode, so that the purpose of reducing the height and the width of the transformer winding is achieved.
For a high-voltage no-load voltage regulating transformer with not particularly large capacity, the voltage regulating winding can be directly arranged on the high-voltage coil of each column, and the design difficulty of the transformer can be directly reduced.
In order to further reduce the overall height and width of the transformer by combining the capacity condition of the transformer, the regulating winding of the transformer can be independently arranged on one side column, and the number of the regulating turns is 2 times of the normal theoretical number of turns because the magnetic flux of the side column is 1/2 of that of the main column.
For the condition of the ultra-large capacity transformer, in order to further reduce the overall height and width of the transformer, the regulating windings of the transformer can be independently arranged on two side columns, and the two regulating windings can be arranged in parallel or in series to form complete electrical connection, so that the height and width of the transformer are reduced. Since the magnetic flux of the side column is 1/2 of that of the main column, the number of voltage-regulating turns should be set to be 2 times of the normal theoretical number of turns.
The utility model has the advantages that: the high-capacity mobile transformer has the advantages that the size is small, the transportation is convenient, when the transformer fails in high-load power utilization, the high-capacity mobile transformer can be allocated into a transformer substation or a power plant with response requirements at any time to be put into operation quickly, and the stability of power supply is guaranteed.
Description of the drawings:
fig. 1 is a schematic top view of the present invention;
fig. 2 is a schematic front view of a single-phase transformer in the present invention;
fig. 3 is a schematic top view of a single-phase transformer according to the present invention;
fig. 4 is a schematic structural diagram of a single-phase transformer core in a front view;
fig. 5 is a schematic diagram of a sectional structure of an iron core of a single-phase transformer in the present invention.
The specific implementation mode is as follows:
the present invention will be further described with reference to FIGS. 1-5;
firstly, three single-phase transformers with 1/3 capacity are adopted to form a set of three-phase transformer bank with large capacity so as to reduce the transportation volume. A single-phase transformer and the trailer 1 form a mobile transformer unit, and three mobile transformer units form a complete three-phase mobile transformer. When the single-phase transformer operates, the high-voltage bushings of the three single-phase transformers are connected with a high-voltage overhead line, and the low-voltage bushings are connected with a low-voltage overhead line.
The three single-phase transformers with 1/3 capacity and the same structure are respectively arranged on three trailers, and the single-phase transformers are in star connection or angle connection as required to form a complete movable transformer; the radiator 2 of each single-phase transformer is arranged at one end of the trailer, which reduces the overall width of the transformer.
Each single-phase transformer comprises an oil tank 3, two main columns 5 and two side columns 6 are arranged in an iron core of the oil tank, the main columns and the side columns are respectively arranged on the left and right sides of the central line of the oil tank, and one is arranged on each of the two sides; the upper part of the main column is connected with an upper clamping piece 7 through a nut, the upper part of the side column is connected with another upper clamping piece through a nut, a cross beam and a side beam are connected between the two upper clamping pieces, the lower part of the main column is connected with a lower clamping piece 8 through a nut, the lower part of the side column is connected with another lower clamping piece through a nut, a pad foot and the side beam are connected between the two lower clamping pieces through nuts, and the upper clamping piece and the lower clamping piece are connected through a pulling plate to form a rigid fixing frame. The oil tank cover is provided with a low-pressure sleeve 10, a switch 11, a relay 12, a pressure relief valve 13, a high-pressure lifting seat 14, an oil conservator 4 and other components. The high-voltage bushing 9 is installed on the high-voltage lifting seat, the lower parts of the high-voltage bushing and the low-voltage bushing are connected with the wire outlet ends of the high-low coils in the transformer, the switch is connected with the internal voltage regulating coils, the relay is installed on a connecting pipe between the oil conservator and the transformer oil tank, and the pressure release valve is installed on the transformer oil tank.
The high-voltage winding and the low-voltage winding 15 are sleeved on the two main columns, and the high-voltage winding and the low-voltage winding of the two main columns form a complete high-voltage winding and a complete low-voltage winding in a parallel connection or series connection mode, so that the purpose of reducing the height and the width of the transformer winding is achieved.
For a high-voltage no-load voltage regulating transformer with not particularly large capacity, the voltage regulating winding 16 can be directly arranged on the high-voltage coil of each main column, and the design difficulty of the transformer can be directly reduced.
In order to further reduce the overall height and width of the transformer by combining the capacity condition of the transformer, the regulating winding of the transformer can be independently arranged on one side column, and the number of the regulating turns is 2 times of the normal theoretical number of turns because the magnetic flux of the side column is 1/2 of that of the main column.
For the condition of the ultra-large capacity transformer, in order to further reduce the overall height and width of the transformer, the regulating windings of the transformer can be independently arranged on two side columns, and the two regulating windings can be arranged in parallel or in series to form complete electrical connection, so that the height and width of the transformer are reduced. Since the magnetic flux of the side column is 1/2 of that of the main column, the number of voltage-regulating turns should be set to be 2 times of the normal theoretical number of turns.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A super large capacity mobile transformer is characterized in that: the three single-phase transformers with 1/3 capacity and the same structure are respectively arranged on three trailers (1), and the single-phase transformers are in star connection or angle connection as required to form a complete mobile transformer; the radiator (2) of each single-phase transformer is arranged at one end of the trailer;
each single-phase transformer comprises an oil tank (3), two main columns (5) and two side columns (6) are arranged in an iron core of the oil tank, and the main columns and the side columns are respectively arranged on the left and right of the central line of the oil tank; the upper part of the main column is connected with an upper clamping piece (7) through a nut, the upper part of the side column is connected with the other upper clamping piece through a nut, a cross beam and a side beam are connected between the two upper clamping pieces, the lower part of the main column is connected with a lower clamping piece (8) through a nut, the lower part of the side column is connected with the other lower clamping piece through a nut, a pad foot and a side beam are connected between the two lower clamping pieces through a nut, and the upper clamping piece and the lower clamping piece are connected through a pulling plate to form a rigid fixing frame; the oil tank cover is provided with a low-voltage sleeve (10), a switch (11), a relay (12), a pressure release valve (13), a high-voltage rising seat (14) and an oil conservator (4); the high-voltage bushing (9) is installed on the high-voltage lifting seat, the lower parts of the high-voltage bushing and the low-voltage bushing are connected with the wire outlet ends of high-low coils in the transformer, the switch is connected with an internal voltage regulating coil, the relay is installed on a connecting pipe between the oil conservator and the transformer oil tank, and the pressure relief valve is installed on the transformer oil tank;
the high-voltage winding and the low-voltage winding (15) are sleeved on the two main columns, and the high-voltage winding and the low-voltage winding of the two main columns form a complete high-voltage winding and a complete low-voltage winding in a parallel connection or series connection mode.
2. The ultra-large capacity mobile transformer of claim 1, wherein: a voltage regulating winding (16) is provided directly on the high voltage coil of each limb.
3. The ultra-large capacity mobile transformer of claim 1, wherein: the voltage regulating winding of the transformer is arranged on one side column separately.
4. The ultra-large capacity mobile transformer of claim 3, wherein: the magnetic flux of the side column is 1/2 of that of the main column, so that the number of voltage-regulating turns is 2 times of the normal theoretical number of turns.
5. The ultra-large capacity mobile transformer of claim 1, wherein: the voltage regulating windings of the transformer are independently arranged on the two side columns, and the two voltage regulating windings are arranged in parallel or in series to form complete electrical connection.
6. The ultra-large capacity mobile transformer of claim 5, wherein: the magnetic flux of the side column is 1/2 of that of the main column, so that the number of voltage-regulating turns is set to be 2 times of the number of normal theoretical turns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221784668.6U CN217847642U (en) | 2022-07-12 | 2022-07-12 | Ultra-large-capacity mobile transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221784668.6U CN217847642U (en) | 2022-07-12 | 2022-07-12 | Ultra-large-capacity mobile transformer |
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| CN217847642U true CN217847642U (en) | 2022-11-18 |
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| CN202221784668.6U Active CN217847642U (en) | 2022-07-12 | 2022-07-12 | Ultra-large-capacity mobile transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210066917A1 (en) * | 2019-08-30 | 2021-03-04 | Smart Wires Inc. | Deployment of Power Flow Control Systems |
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2022
- 2022-07-12 CN CN202221784668.6U patent/CN217847642U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210066917A1 (en) * | 2019-08-30 | 2021-03-04 | Smart Wires Inc. | Deployment of Power Flow Control Systems |
| US11807149B2 (en) * | 2019-08-30 | 2023-11-07 | Smart Wires Inc. | Deployment of power flow control systems |
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