CN219164241U

CN219164241U - 1.9kV oil becomes forced air cooling reactive power compensator of integral type

Info

Publication number: CN219164241U
Application number: CN202320097005.5U
Authority: CN
Inventors: 高海星; 李志刚; 孔乐乐; 徐长海; 梁开来; 徐强; 房智祥
Original assignee: Windsun Science and Technology Co Ltd
Current assignee: Windsun Science and Technology Co Ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2023-06-09
Anticipated expiration: 2033-02-01

Abstract

The utility model relates to a 1.9kV oil-to-air cooling reactive compensation device, which comprises a base and a cabinet body, wherein a control cabinet, a power unit, an isolating switch, an isolating contact copper bar, a contactor and a contactor copper bar are arranged in the cabinet body, the lower terminal of the isolating switch is connected with the input terminal of the contactor through the isolating contact copper bar, and the output end of the contactor is connected with the input copper bar of each phase of power unit through the contactor copper bar; is characterized in that: an oil immersed transformer is fixed on the base, a primary side wiring terminal of the oil transformer is connected to a 10kV output end of an alternating current power grid, and a secondary side wiring terminal is connected with an upper terminal of the isolating switch through a cable. According to the reactive power compensation device, the input voltage is reduced, so that the number of power units is reduced from 30 to 6, the size of the whole cabinet body is greatly reduced due to the reduction of the number of the power units, and the manufacturing cost and the occupied area cost of the reactive power compensation device are reduced.

Description

1.9kV oil becomes forced air cooling reactive power compensator of integral type

Technical Field

The utility model relates to a 1.9kV oil-to-air-cooled reactive power compensation device, in particular to a 1.9kV oil-to-air-cooled reactive power compensation device.

Background

In order to realize heat dissipation and temperature reduction of a power device, outdoor air inlet can directly flow through a frame and a power unit of a power cabinet; in order to match the input voltage of 10kV, the number of the whole power units of the reactive compensation device is more than 30. This structural arrangement has the following disadvantages, including: (1) The cost is high due to the large number of power units required; (2) The whole machine box has large volume, so that the occupied area is large and the cost is high; (3) Outdoor wind directly flows through the power unit in the power cabinet, so that the internal devices of the power unit are easily influenced by the external environment, the service lives of the power unit and the internal devices of the whole machine are reduced, and the failure rate of the whole machine is increased.

Disclosure of Invention

The utility model provides a 1.9kV oil-to-air integrated air-cooled reactive power compensation device for overcoming the defects of the technical problems.

The utility model relates to a 1.9kV oil-to-air cooling reactive compensation device, which comprises a base and a cabinet body fixed on the base, wherein a control cabinet, a power unit, an isolating switch, an isolating contact copper bar, a contactor and a contactor copper bar are arranged in the cabinet body; the output end of the power unit is connected with the star sealing through the star sealing point copper bar, and the control cabinet is used for controlling the operation of the reactive power compensation device; the method is characterized in that: an oil-immersed transformer is fixed on the base, a primary side wiring terminal of the oil-immersed transformer is connected to a 10kV output end of an alternating current power grid, and a secondary side wiring terminal of the oil-immersed transformer is connected with an upper terminal of the isolating switch through a cable.

According to the 1.9kV oil-to-air integrated air-cooled reactive power compensation device, the outer side of the cabinet body is provided with the heat dissipation air duct, the two sides of the heat dissipation air duct are provided with the air inlet and the air outlet, the heat dissipation air duct is internally provided with the axial flow fan, and the air inlet and the air outlet are communicated with the outside; the power unit is fixedly provided with a radiator for radiating the power device, the radiator penetrates through the wall of the cabinet body, and radiating fins of the radiator are positioned in the radiating air duct.

According to the 1.9kV oil-to-air cooling reactive power compensation device, the wall of the cabinet body is fixed with the heat exchanger for cooling the interior of the cabinet body.

According to the 1.9kV oil-to-air cooling reactive power compensation device, one side of a contactor in the cabinet body is provided with a buffer resistor component, and two ends of the buffer resistor component are connected to an input terminal and an output terminal of the contactor.

According to the 1.9kV oil-to-air cooling reactive power compensation device, the oil immersed transformer is connected with the cabinet body through the flange.

According to the 1.9kV oil-to-air cooling reactive power compensation device, the power unit is fixed on a bracket in the cabinet body through the SMC section bar.

The beneficial effects of the utility model are as follows: according to the reactive power compensation device, the oil immersed transformer (oil transformer for short) is arranged between the reactive power compensation device and the 10kV power supply output by the alternating current power grid, the 10kV voltage output by the alternating current power grid is reduced to be 1.9kV by utilizing the oil transformer and is connected to the input side of reactive power compensation, the number of power units is reduced from 30 to 6 by reducing the input voltage, the size of the whole cabinet body is greatly reduced by reducing the number of the power units, and the manufacturing cost and the occupied area cost of the reactive power compensation device are reduced.

Further, through setting up the heat dissipation wind channel in the outside of reactive power compensator cabinet body, the power unit just the radiating fin of radiator is arranged in the heat dissipation wind channel and is dispelled the heat to power device for the internal device of cabinet separates with external environment completely, has avoided external moist air, dust's entering, makes internal device of cabinet can reach IP 65's protection level, has further guaranteed the reliability of power unit and internal device of cabinet, and greatly reduced the fault rate of complete machine.

Drawings

FIG. 1 is a front view of a 1.9kV oil-change integrated air-cooled reactive power compensation device of the utility model;

FIG. 2 is a rear view of the 1.9kV oil-change integrated air-cooled reactive power compensation device of the utility model;

FIG. 3 is a left side view of the 1.9kV oil-change integrated air-cooled reactive power compensation device;

FIG. 4 is a cross-sectional view of section A-A of FIG. 1;

FIG. 5 is a cross-sectional view of section B-B of FIG. 1;

fig. 6 is a cross-sectional view of section C-C of fig. 5.

In the figure: the oil immersed transformer comprises an oil immersed transformer body 1, a cabinet body 2, a heat exchanger 3, an air outlet 4, a power unit 5, an air inlet 6, an isolating switch 7, a control cabinet 8, a buffer resistor component 9, an axial flow fan 10, an isolated contact copper bar 11, a contactor 12, a contactor copper bar 13, a sheet molding compound 14, a star point copper bar 15, a sensor component 16, a base 17, a radiator 18, a flange plate 19 and a heat dissipation air duct 20.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

As shown in fig. 1, fig. 2 and fig. 3, a front view, a rear view and a left view of the 1.9kV oil-transformer integrated air-cooled reactive power compensation device of the present utility model are respectively provided, fig. 4 and fig. 5 are respectively provided with a section A-A section and a section B-B section in fig. 1, fig. 6 is provided with a section C-C section in fig. 5, the reactive power compensation device is composed of a base 17, an oil-immersed transformer 1 and a cabinet body 2 with reactive power compensation equipment built in, the base 17 plays a role of fixing and supporting, the oil-immersed transformer 1 (oil transformer for short) and the cabinet body 2 are both fixed on the base 17, a protective cover of the oil-immersed transformer 1 and the cabinet body 2 are butt-mounted through a flange 19, and a sealing rubber strip is pasted between mounting surfaces to play a role of sealing and waterproofing.

The primary side wiring terminal of the oil-immersed transformer 1 is connected with a 10kV power supply output by an alternating current power grid, and the oil-immersed transformer 1 converts the input 10kV alternating current into 1.9kV alternating current and inputs the 1.9kV alternating current to an upper terminal of an isolating switch 7 in the cabinet body 2. Like this, through set up oily formula transformer 1 between ac electric wire netting and reactive power compensator, make power unit quantity reduce from original 30 to 6, the reduction of power unit quantity makes the volume of complete machine cabinet body reduce by a wide margin, has reduced reactive power compensator's manufacturing cost and occupation of land cost.

As shown in fig. 4, a plurality of power units 5 are arranged in the cabinet body 2, and power devices in the power units 5 are used for realizing reactive compensation. As shown in fig. 5, a control cabinet 8 is arranged on the left side in the cabinet body 2, the control cabinet 8 is used for controlling the reactive compensation device to operate, an isolating switch 7, an isolating contact copper bar 11, a contactor 12 and a contactor copper bar 13 are sequentially arranged on the right side of the cabinet body 2 from top to bottom, an upper terminal of the isolating switch 7 is connected with a secondary side terminal of the oil immersed transformer 1 through a cable, and a lower terminal of the isolating switch 7 is connected with the upper end of the isolating contact copper bar 11. The lower end of the isolated contact copper bar 11 is connected with the input end of the contactor 12, the output end of the contactor 12 is connected with the upper end of the contactor copper bar 13, the lower end of the contactor copper bar 13 is connected with the input row (copper bar) of each phase of power unit 5 through a cable, each phase of power unit 5 is formed by connecting 2 power units 5 in series, and 6 power units are needed in total in three phases. The output of the power unit 5 is star sealed by a star point copper bar 15.

The power unit 5 is fixedly provided with a radiator 18 for radiating and cooling the power device, the radiator 18 penetrates through the wall of the cabinet body 2, and radiating fins of the radiator 18 are positioned outside the cabinet body 2 and in the radiating air duct 20. The heat dissipation wind channel 20 sets up in the outside of cabinet body 2, and the both ends of heat dissipation wind channel 20 are air intake 6 and air outlet 4 respectively, and air intake 6 and air outlet 4 all are linked together with the external world, are provided with axial fan 10 in the heat dissipation wind channel 20. Therefore, under the driving action of the axial flow fan 10, the outside air can be driven to enter the heat dissipation air duct 20 through the air inlet 6 and flow out through the air outlet 4, and the heat emitted by the heat dissipation fins of the radiator 18 can be taken away in the process of circulating in the heat dissipation air duct 20, so that the cooling of the power devices in the power unit 5 is finally realized.

Because the heat dissipation air duct 20 is arranged on the outer side of the cabinet body 2, no external air flows into the cabinet body 2 in the process of cooling the radiator 18, so that external moisture and dust are prevented from entering, the higher protection level (the protection level of IP65 can be achieved) of devices in the cabinet body 2 is ensured, the failure rate of the whole machine is reduced, and the service life of the devices is ensured.

In order to realize cooling of the internal environment in the cabinet body 2, the cabinet body 2 is provided with a heat exchanger 3, and the heat exchanger 3 realizes heat exchange between the internal environment in the cabinet body 2 and the external environment through a set heat pipe, a radiator and a fan, so that small-power devices in the cabinet body 2 are subjected to heat dissipation and cooling.

Claims

1. The utility model provides a 1.9kV oil becomes integrated forced air cooling reactive power compensator, including base (17) and cabinet body (2) on being fixed in the base, be provided with switch board (8), power unit (5), isolator (7), isolated contact copper bar (11), contactor (12) and contactor copper bar (13) in the cabinet body, isolator, isolated contact copper bar, contactor and contactor copper bar set up from top to bottom in proper order, isolator's lower terminal is connected with the input terminal of contactor through isolated contact copper bar, the output of contactor is connected with the input copper bar of each looks power unit through contactor copper bar; the output end of the power unit is connected with a star sealing through a star sealing point copper bar (15), and the control cabinet is used for controlling the operation of the reactive power compensation device; the method is characterized in that: an oil-immersed transformer (1) is fixed on the base, a primary side wiring terminal of the oil-immersed transformer is connected to a 10kV output end of an alternating current power grid, and a secondary side wiring terminal of the oil-immersed transformer is connected with an upper terminal of the isolating switch through a cable.

2. The 1.9kV oil transformer integrated air-cooled reactive power compensation device according to claim 1, wherein the reactive power compensation device is characterized in that: a heat dissipation air duct (20) is arranged at the outer side of the cabinet body (2), an air inlet (6) and an air outlet (4) are formed in two sides of the heat dissipation air duct, an axial flow fan (10) is arranged in the heat dissipation air duct, and the air inlet and the air outlet are communicated with the outside; and a radiator (18) for radiating the power device is fixed on the power unit (5), and penetrates through the wall of the cabinet body, and radiating fins of the radiator are positioned in the radiating air duct.

3. The 1.9kV oil transformer integrated air-cooled reactive power compensation device according to claim 1 or 2, wherein the reactive power compensation device is characterized in that: the wall of the cabinet body (2) is fixed with a heat exchanger (3) for cooling the interior of the cabinet body.

4. The 1.9kV oil transformer integrated air-cooled reactive power compensation device according to claim 1 or 2, wherein the reactive power compensation device is characterized in that: one side of a contactor (12) in the cabinet body (2) is provided with a buffer resistor component (9), and two ends of the buffer resistor component are connected to an input terminal and an output terminal of the contactor.

5. The 1.9kV oil transformer integrated air-cooled reactive power compensation device according to claim 1 or 2, wherein the reactive power compensation device is characterized in that: the oil immersed transformer (1) is connected with the cabinet body (2) through flanges.

6. The 1.9kV oil transformer integrated air-cooled reactive power compensation device according to claim 1 or 2, wherein the reactive power compensation device is characterized in that: the power unit (5) is fixed on a bracket inside the cabinet body (2) through an SMC section bar (14).