CN212909000U

CN212909000U - SVG power unit

Info

Publication number: CN212909000U
Application number: CN202021413223.8U
Authority: CN
Inventors: 王东; 张小蒙; 周泽平; 黄晓
Original assignee: Shenzhen Hopewind Electric Co Ltd
Current assignee: Shenzhen Hopewind Electric Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-04-06
Anticipated expiration: 2030-07-17

Abstract

The application discloses an SVG power unit, which comprises a shell, and a power module, a laminated busbar assembly and a capacitor assembly which are arranged in an installation space in the shell; the power module is arranged on the water-cooled radiator; a water inlet nozzle and a water outlet nozzle of the water-cooled radiator are led out from a front panel of the shell, and an alternating current input copper bar and an alternating current output copper bar of the power module are respectively led out from a left side plate and a right side plate of the shell. According to the SVG power unit, the power module is arranged on the water-cooling radiator; a water inlet nozzle and a water outlet nozzle of the water-cooled radiator are led out from a front panel of the shell, and an alternating current input copper bar and an alternating current output copper bar of the power module are respectively led out from a left side plate and a right side plate of the shell; the circuit and the water path are kept at a certain safe distance, the heat dissipation effect is good, and the reliability of the power unit is improved.

Description

SVG power unit

Technical Field

The application relates to the technical field of power electronics, in particular to a SVG power unit.

Background

The stable operation of the power system requires a large amount of reactive power, and reactive compensation is an important and effective method for ensuring the quality of electric energy. The Static Var Generator (SVG) is mainly applied to high-voltage and high-power transmission and distribution occasions, and has the main functions of compensating reactive power of a load end to improve power factors of the load end, reducing capacity of electrical equipment, reducing active loss of a power transmission line, balancing three-phase power and maintaining voltage stability of a power system.

The SVG power unit generally adopts the forced air cooling heat dissipation, except for giving the radiator heat dissipation of IGBT module lower part, components and parts such as inside IGBT module drive plate, pick-up plate, power module, discharge resistance board also need the heat dissipation, and the cold air is through above components and parts, and the dust in the air can gather on IGBT module drive plate and the pick-up plate that are more sensitive to the dust, above can reduce SVG power unit's reliability.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides an SVG power unit, which aims to solve the heat dissipation problem of the SVG power unit.

According to one aspect of the application, the SVG power unit comprises a shell, and a power module, a laminated busbar assembly and a capacitor assembly which are arranged in an installation space inside the shell; the power module is connected with the capacitor assembly through the laminated busbar assembly; the laminated busbar assembly is positioned in the middle of the installation space so as to divide the installation space into a front installation space and a rear installation space; the power module is arranged in the front installation space, and the capacitor assembly is arranged in the rear installation space;

the SVG power unit further comprises a water-cooling radiator arranged in the front mounting space, and the power module is arranged on the water-cooling radiator; the water inlet nozzle and the water outlet nozzle of the water-cooled radiator are led out from the front panel of the shell, and the alternating current input copper bar and the alternating current output copper bar of the power module are respectively led out from the left side plate and the right side plate of the shell.

In one embodiment, the SVG power unit further includes a detection circuit board and a first fixing plate disposed at the front mounting space;

the first fixing plate is arranged on the power module, and the detection circuit board is fixed on the first fixing plate.

In one embodiment, the test circuit board has a communication interface disposed proximate to the front panel of the housing.

In one embodiment, the SVG power unit further includes a power supply circuit board, a discharge resistance circuit board, and a second fixing plate disposed at the front mounting space;

the second fixing plate is arranged on the detection circuit board, and the power supply circuit board and the discharge resistance circuit board are fixed on the second fixing plate side by side.

In one embodiment, an upper cover plate of the housing is disposed on the power circuit board and the discharge resistance circuit board;

the upper cover plate is the slope structure of back height front low, just the front end of upper cover plate is equipped with hides the eaves to make water along hide the eaves flow direction and keep away from SVG power unit's position.

In one embodiment, the left side plate and the right side plate of the housing are provided with heat dissipation holes to dissipate heat of the capacitor assembly.

In one embodiment, the laminated busbar assembly includes a negative dc busbar, a positive dc busbar, and an insulating member disposed between the negative dc busbar and the positive dc busbar.

In one embodiment, the SVG power unit further includes a rail on which the housing is fixed.

In one embodiment, a guide piece is arranged on the rear panel of the shell, and a jack matched with the guide piece is arranged at the rear end of the guide rail; the left side plate and the right side plate of the shell are provided with hanging lugs, and the front ends of the guide rails are fixed on the hanging lugs.

In one embodiment, the left and right side panels of the housing are provided with hangers that are positioned proximate to the front panel of the housing.

According to the SVG power unit provided by the embodiment of the application, the power module is arranged on the water-cooling radiator; a water inlet nozzle and a water outlet nozzle of the water-cooled radiator are led out from a front panel of the shell, and an alternating current input copper bar and an alternating current output copper bar of the power module are respectively led out from a left side plate and a right side plate of the shell; the circuit and the water path are kept at a certain safe distance, the heat dissipation effect is good, and the reliability of the power unit is improved.

Drawings

Fig. 1 is a schematic diagram of an SVG power unit provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a power module and a detection circuit board in an SVG power unit provided in an embodiment of the present application;

fig. 3 is a schematic diagram of an SVG power unit provided in an embodiment of the present application with an upper cover removed;

fig. 4 is a schematic side view of an SVG power unit provided in an embodiment of the present application;

fig. 5 is a schematic diagram of a guide rail and a suspension loop in an SVG power unit provided in an embodiment of the present application;

fig. 6 is a schematic diagram of a guide rail and a guide member in an SVG power unit according to an embodiment of the present application.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer and clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-2, an SVG power unit 10 according to an embodiment of the present application includes a housing 11, and a power module 14, a laminated busbar assembly 13, and a capacitor assembly 12 disposed in an installation space inside the housing 11; the power module 14 and the capacitor assembly 12 are connected through the laminated busbar assembly 13; the laminated busbar assembly 13 is positioned in the middle of the installation space to divide the installation space into a front installation space and a rear installation space; the power module 14 is arranged in the front installation space, and the capacitor assembly 12 is arranged in the rear installation space;

the SVG power unit further comprises a water-cooling radiator 15 arranged in the front mounting space, and the power module 14 is arranged on the water-cooling radiator 15; the water inlet nozzle 151 and the water outlet nozzle 152 of the water-cooled heat sink 15 are led out from the front panel 111 of the housing 11, and the ac input copper bar 141 and the ac output copper bar 142 of the power module 14 are led out from the left side plate 112 and the right side plate (not shown in the drawing) of the housing 11, respectively.

In this embodiment, the laminated busbar assembly 13 includes a negative dc busbar, a positive dc busbar and an insulating member, and the insulating member is disposed between the negative dc busbar and the positive dc busbar.

In the present embodiment, the power module 14 includes an IGBT power module and a driving board thereof.

By placing the power module 14 on a water-cooled heat sink 15; a water inlet nozzle 151 and a water outlet nozzle 152 of the water-cooled radiator 15 are led out from the front panel 111 of the shell 11, and an alternating current input copper bar 141 and an alternating current output copper bar 142 of the power module 14 are led out from the left side plate 112 and the right side plate of the shell 11 respectively; the circuit and the water path are kept at a certain safe distance, the heat dissipation effect is good, and the reliability of the power unit is improved. In addition, the water pipe of the water-cooled radiator 15 can be installed and maintained from the front.

Referring to fig. 2, in one embodiment, the SVG power unit further includes a detection circuit board 17 and a first fixing plate 16 disposed in the front mounting space;

the first fixing plate 16 is disposed on the power module 14, and the detection circuit board 17 is fixed on the first fixing plate 16.

In this embodiment, the detection circuit board 17 has a communication interface 171, and the communication interface 171 is disposed adjacent to the front panel 111 of the housing 11. Specifically, the communication interface 171 may be a fiber interface, and the fiber interface can be plugged and unplugged on the front surface, which is convenient for installation and maintenance.

Referring to fig. 3, in this embodiment, the SVG power unit further includes a power circuit board 19, a discharge resistance circuit board 20, and a second fixing plate 18, which are disposed in the front mounting space;

the second fixing plate 18 is disposed on the detection circuit board 17, and the power circuit board 19 and the discharge resistor circuit board 20 are fixed to the second fixing plate 18 side by side.

Referring to fig. 1 and 4, in this embodiment, the upper cover plate 113 of the housing 11 is disposed on the power circuit board 19 and the discharge resistance circuit board 20;

the upper cover plate 113 is a high-front-low inclined structure, and the front end of the upper cover plate 113 is provided with an eaves 1131, so that water flows away from the SVG power unit along the eaves 1131.

In this embodiment, the detection circuit board 17, the power circuit board 19, and the discharge resistance circuit board 20 are all located above the water inlet 151 and the water outlet 152 of the water-cooled heat sink 15, so that the water leakage at the water outlet does not substantially affect the normal operation of the power unit.

Referring to fig. 1 and 4, in an embodiment, heat dissipation holes 1121 are formed on the left side plate 112 and the right side plate of the housing 11 to dissipate heat of the capacitor assembly 12.

As will be understood with reference to fig. 5-6, in one embodiment, the SVG power unit further includes a guide rail 21, and the housing 11 can be fixed on the guide rail 21 or detached from the guide rail 21 from the front surface of the housing 11.

In this embodiment, the rear end of the guide rail 21 is movably connected to the rear panel 114 of the housing 11, and the front end of the guide rail 21 is fixed to the left and

right side panels

112 and 11 of the housing 11.

Specifically, a guide 1141 is disposed on the rear panel 114 of the housing 11, and a plug hole for blind-mating with the guide 1141 is disposed at the rear end of the guide rail 21. The power unit is restrained from displacement at the rear by the guide 1141 and the blind mating receptacle.

The left side plate 112 and the right side plate of the housing 11 are provided with hanging lugs 1122, and the hanging lugs 1122 are fixed at the front ends of the guide rails 21. The hanging lug 1122 is arranged close to the front panel 111 of the shell 11, the front end of the guide rail 21 is provided with a fixed mounting surface, and the hanging lug 1122 is fixed at the front end of the guide rail 21 through a fastener, so that front mounting and maintenance are realized.

The preferred embodiments of the present application have been described above with reference to the accompanying drawings, and are not intended to limit the scope of the claims of the application accordingly. Any modifications, equivalents and improvements which may occur to those skilled in the art without departing from the scope and spirit of the present application are intended to be within the scope of the claims of the present application.

Claims

1. An SVG power unit comprises a shell, and a power module, a laminated busbar assembly and a capacitor assembly which are arranged in an installation space in the shell; the power module is connected with the capacitor assembly through the laminated busbar assembly; the laminated busbar assembly is positioned in the middle of the installation space so as to divide the installation space into a front installation space and a rear installation space; the power module is arranged in the front installation space, and the capacitor assembly is arranged in the rear installation space;

the SVG power unit is characterized by further comprising a water-cooling radiator arranged in the front mounting space, and the power module is arranged on the water-cooling radiator; the water inlet nozzle and the water outlet nozzle of the water-cooled radiator are led out from the front panel of the shell, and the alternating current input copper bar and the alternating current output copper bar of the power module are respectively led out from the left side plate and the right side plate of the shell.

2. The SVG power unit according to claim 1, further comprising a detection circuit board and a first fixing plate provided in the front mounting space;

3. The SVG power unit of claim 2, wherein said detection circuit board has a communication interface disposed proximate a front panel of said housing.

4. The SVG power unit of claim 3, wherein said SVG power unit further comprises a power supply circuit board, a discharge resistance circuit board, and a second fixing plate provided in said front mounting space;

5. The SVG power unit of claim 4, wherein an upper cover plate of said housing is provided on said power supply circuit board and said discharge resistance circuit board;

6. The SVG power unit of any one of claims 1-5, wherein said housing is provided with heat dissipation holes on its left and right side panels for dissipating heat from said capacitor assembly.

7. The SVG power unit of any of claims 1-5, wherein said laminated busbar assembly comprises a negative DC busbar, a positive DC busbar and an insulator disposed intermediate said negative DC busbar and said positive DC busbar.

8. An SVG power unit according to any one of claims 1 to 5, wherein said SVG power unit further includes a rail on which said housing is fixed.

9. The SVG power unit according to claim 8, wherein a guide is provided on a rear panel of the housing, and a rear end of the guide rail is provided with a socket which is fitted with the guide; the left side plate and the right side plate of the shell are provided with hanging lugs, and the front ends of the guide rails are fixed on the hanging lugs.

10. The SVG power unit of claim 9, wherein the hangers are disposed proximate a front panel of the housing.