CN220652607U - A high voltage cabinet - Google Patents

Abstract

The utility model provides a high-voltage cabinet, which belongs to the technical field of high-voltage cabinet equipment and comprises a shell, a switch assembly, a high-voltage current transformer, an isolation assembly and a monitoring assembly; the shell is provided with a mounting frame; the switch assembly is arranged on the mounting frame, and one end of the switch assembly is suitable for being connected with the incoming cable; the high-voltage current transformer is electrically connected with the other end of the switch assembly and is suitable for being electrically connected with the transformer; the isolation assembly is electrically connected with the switch assembly and is suitable for being electrically connected with the incoming cable; the monitoring assembly is electrically connected with the switch assembly, and the high-voltage current transformer is electrically connected with the monitoring assembly. According to the high-voltage cabinet, the high-voltage current transformer is arranged to measure high-voltage current, and transmits a measured high-voltage current signal to the monitoring component to monitor the high-voltage current; the high-voltage cabinet has the capability of switching on and off the rated current of the main loop and overload and short-circuit current.

Description

A high voltage cabinet

Technical field

The utility model relates to the technical field of high-voltage cabinet equipment, in particular to a high-voltage cabinet.

Background technique

Substations that use air insulation in the high-voltage cabin of the high-voltage cabinet currently include Chinese-style substations and European-style substations. In Chinese-style substations and European-style substations, the load switches and arresters in the high-voltage cabin do not form an independent and complete metal-enclosed switch. Equipment and control equipment, all primary components are placed separately in the high-voltage chamber as single components, and are not suitable for the use requirements of energy storage container-type substations.

In the existing technology, there is a relatively complete high-voltage cabinet that integrates load switches and arresters into an independent metal-enclosed switchgear. However, this high-voltage cabinet cannot meet the functional requirements for high-voltage current measurement and monitoring.

Utility model content

Therefore, the present utility model aims to solve the problem in the prior art that high-voltage cabinets cannot meet the functional requirements for primary current measurement and monitoring, thereby providing a high-voltage cabinet.

In order to solve the above problems, the present utility model provides a high-voltage cabinet, which includes a housing, a switch component, a high-voltage current transformer, an isolation component and a monitoring component; the housing is provided with a mounting frame; the switch component is provided on the On the mounting frame, one end of the switch component is suitable for connecting to the incoming cable; the high-voltage current transformer is electrically connected to the other end of the switch component, and the high-voltage current transformer is suitable for being electrically connected to the transformer; The isolation component is electrically connected to the switch component, and the isolation component is suitable for electrical connection to the incoming cable; the monitoring component is electrically connected to the switch component, and the monitoring component is to the high-voltage current transformer. Electrical connection.

Optionally, the monitoring component includes an opening and closing unit and a measurement and control unit. The opening and closing unit is electrically connected to the switch component. The measurement and control unit is electrically connected to the switch component. The measurement and control unit is electrically connected to the switch component. High voltage current transformer is electrically connected.

Optionally, the monitoring component further includes an indicator light, the indicator light is electrically connected to the opening and closing switch, and the indicator light is suitable for displaying the working status of the opening and closing switch.

Optionally, the switch assembly includes a vacuum arc extinguishing chamber and an isolation switch. The isolation switch is arranged in series with the vacuum arc extinguishing chamber. The vacuum arc extinguishing chamber is electrically connected to the high-voltage current transformer. The vacuum arc extinguishing chamber is electrically connected to the monitoring component.

Optionally, the switch assembly further includes a fuse, and the fuse is arranged in series between the isolation switch and the vacuum arc extinguishing chamber.

Optionally, the switch assembly further includes a first wall bushing and a conductive rod, the conductive rod is arranged in the first wall bushing, and the conductive rod connects the fuse and the isolating switch.

Optionally, the switch assembly further includes a grounding switch, the grounding switch is electrically connected to the vacuum arc extinguishing chamber, and the grounding switch is electrically connected to the fuse.

Optionally, the high voltage cabinet further includes a second wall bushing and a wall busbar, the second wall bushing is provided through the housing, and the wall busbar is provided on the second wall busbar. In the wall bushing, the wall-through busbar is suitable for connecting the high-voltage current transformer and the transformer.

Optionally, the isolation component includes a cable busbar and a lightning arrester. The cable busbar is adapted to be electrically connected to the incoming cable. The cable busbar is connected to the switch assembly. The lightning arrester is connected to the cable busbar. The arrester is connected to the housing.

Optionally, the isolation component further includes an insulator connected between the housing and the cable busbar.

This utility model has the following advantages:

1. A high-voltage cabinet provided by the utility model realizes the measurement of high-voltage current by setting a high-voltage current transformer. The high-voltage current transformer transmits the measured high-voltage current signal to the monitoring component, thereby realizing the monitoring of high-voltage current; The high-voltage cabinet has the ability to break the rated current of the main circuit and the overload and short-circuit current.

2. The utility model provides a high-voltage cabinet. By setting a fuse, when the current in the circuit exceeds a specified value, the fuse uses the heat generated by itself to melt the melt and disconnect the circuit, thereby improving the safety performance of the high-voltage circuit. .

3. The utility model provides a high-voltage cabinet that plays a grounding protection role by setting a grounding switch in the high-voltage circuit.

4. The utility model provides a high-voltage cabinet that plays a lightning protection role by installing a lightning arrester in the high-voltage circuit.

Description of drawings

In order to more clearly explain the specific embodiments of the present invention or the technical solutions in the prior art, the drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description The accompanying drawings illustrate some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 shows a schematic diagram of the internal structure of a high-voltage cabinet provided by an embodiment of the present invention;

Figure 2 shows a schematic structural diagram of a monitoring component provided by an embodiment of the present invention.

Explanation of reference symbols:

10. Housing; 11. Mounting frame; 20. Switch assembly; 21. Vacuum arc extinguishing chamber; 22. Isolating switch; 23. Fuse; 24. First wall bushing; 25. Conductive rod; 26. Grounding switch ; 30. High voltage current transformer; 40. Isolation component; 41. Cable busbar; 42. Lightning arrester; 43. Insulator; 50. Monitoring component; 51. Opening and closing; 52. Measurement and control unit; 53. Indicator light; 60. The second wall bushing; 70, wall busbar. 100. Cable room; 200. Load switch room.

Detailed ways

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. The orientation structure and operation of the invention cannot be construed as limitations of the present invention. Furthermore, the terms “first”, “second” and “third” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. Detachable connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in Figures 1 and 2, the specific implementation of the high-voltage cabinet includes a housing 10, a switch component 20, a high-voltage current transformer 30, an isolation component 40 and a monitoring component 50; the housing 10 is provided with a mounting bracket 11; The switch component 20 is arranged on the mounting frame 11. One end of the switch component 20 is suitable for connecting to the incoming cable; the high-voltage current transformer 30 is electrically connected to the other end of the switch component 20, and the high-voltage current transformer 30 is suitable for being electrically connected to the transformer. ; The isolation component 40 is electrically connected to the switch component 20, and the isolation component 40 is suitable for being electrically connected to the incoming cable; the monitoring component 50 is electrically connected to the switch component 20, and the monitoring component 50 is electrically connected to the high-voltage current transformer 30.

By applying the high-voltage cabinet of this embodiment, the high-voltage current is measured by setting the high-voltage current transformer 30. The high-voltage current transformer 30 transmits the measured high-voltage current signal to the monitoring component 50, thereby realizing the monitoring of the high-voltage current; The cabinet has the ability to break the rated current of the main circuit and the overload and short-circuit current.

Specifically, the housing 10 is a metal closed housing 10, and the cabinet doors are connected through mechanical devices and electrical connections to form a complete "five-proof" function.

Specifically, the high-voltage current direction of the high-voltage cabinet in this embodiment is: incoming cable outside the high-voltage cabinet casing 10 → isolation component 40 → switch component 20 → high-voltage current transformer 30 → transformer.

Specifically, the monitoring component 50 can collect switching status signals and current value signals of high-voltage cabinets to achieve RS485 communication requirements to meet the current use of energy storage container-type substations and other substation projects that require a full cabinet.

It should be noted that the monitoring component 50 is electrically connected to the switch component 20 , and the monitoring component 50 is electrically connected to the high-voltage current transformer 30 as a low-voltage connection.

In this embodiment, as shown in Figure 2, the monitoring component 50 includes an opening and closing 51 and a measurement and control unit 52. The opening and closing 51 is electrically connected to the switch assembly 20, and the measurement and control unit 52 is electrically connected to the switch assembly 20. The measurement and control unit 52 is electrically connected to the high voltage current transformer 30 .

Specifically, the opening and closing 51 and the measurement and control unit 52 can realize the switching control of the switch assembly 20 respectively, and the measurement and control unit 52 can realize the monitoring of the current signal transmitted by the high-voltage current transformer 30 .

Furthermore, the measurement and control unit 52 can also implement remote control.

In this embodiment, as shown in FIG. 2 , the monitoring component 50 also includes an indicator light 53 . The indicator light 53 is electrically connected to the opening and closing switch 51 . The indicator light 53 is suitable for displaying the working status of the opening and closing switch 51 .

In this embodiment, as shown in Figure 1, the switch assembly 20 includes a vacuum arc extinguishing chamber 21 and an isolation switch 22. The isolation switch 22 and the vacuum arc extinguishing chamber 21 are arranged in series. The vacuum arc extinguishing chamber 21 is electrically connected to the high-voltage current transformer 30. The vacuum arc extinguishing chamber 21 and the monitoring component 50 are electrically connected.

Specifically, the high-voltage cabinet realizes switching control of the high-voltage circuit through the cooperation of the vacuum arc extinguishing chamber 21 and the isolation switch 22 .

Specifically, the vacuum arc extinguishing chamber 21 can be opened and closed electronically through the opening and closing switch 51 or the measurement and control unit 52, and the isolation switch 22 needs to be opened and closed manually.

Further, when the high-voltage circuit is opened, the vacuum arc extinguishing chamber 21 is first opened through the opening and closing 51 or the measurement and control unit 52, and then the isolation switch 22 is manually opened; when the high-voltage circuit is closed, During operation, the isolating switch 22 is first manually closed, and then the vacuum arc extinguishing chamber 21 is closed through the opening and closing 51 or the measurement and control unit 52 .

Specifically, the vacuum arc extinguishing chamber 21 is electrically connected to the high-voltage current transformer 30 through a copper flexible bar.

In this embodiment, as shown in FIG. 1 , the switch assembly 20 further includes a fuse 23 , and the fuse 23 is arranged in series between the isolation switch 22 and the vacuum arc extinguishing chamber 21 .

It is worth mentioning that by setting up the fuse 23, when the current in the circuit exceeds a specified value, the fuse 23 uses the heat generated by itself to melt the melt and disconnect the circuit, thereby improving the safety performance of the high-voltage circuit.

In this embodiment, as shown in FIG. 1 , the switch assembly 20 also includes a first wall bushing 24 and a conductive rod 25 . The conductive rod 25 is disposed in the first wall bushing 24 , and the conductive rod 25 is connected to the fuse 23 and isolating switch 22.

Of course, in other alternative embodiments, the conductive rod 25 can also be replaced by other conductive objects.

In this embodiment, as shown in FIG. 1 , the switch assembly 20 further includes a grounding switch 26 , the grounding switch 26 is electrically connected to the vacuum arc extinguishing chamber 21 , and the grounding switch 26 is electrically connected to the fuse 23 .

It is worth mentioning that by arranging the grounding switch 26 in the high-voltage circuit, it plays a grounding protection role.

In this embodiment, as shown in Figure 1, the high voltage cabinet also includes a second wall bushing 60 and a wall busbar 70. The second wall bushing 70 is disposed through the housing 10, and the wall busbar 70 is disposed on In the second wall bushing 60, the wall busbar 70 is suitable for connecting the high voltage current transformer 30 and the transformer.

In this embodiment, as shown in Figure 1, the isolation component 40 includes a cable busbar 41 and a lightning arrester 42. The cable busbar 41 is suitable for electrical connection with the incoming cable. The cable busbar 41 is connected to the switch assembly 20. The lightning arrester 42 It is connected to the cable busbar 41, and the lightning arrester 42 is connected to the housing 10.

Specifically, the lightning arrester 42 is provided at the bottom of the housing 10 .

Of course, in other alternative implementations, the arrester 42 can also be hoisted according to project requirements.

It is worth mentioning that by arranging the lightning arrester 42 in the high-voltage circuit, it plays a lightning protection role.

In this embodiment, as shown in FIG. 1 , the isolation assembly 40 further includes an insulator 43 , and the insulator 43 is connected between the housing 10 and the cable busbar 41 .

In other alternative embodiments, the insulator 43 can also be replaced by a voltage sensor and a charged indicator. The voltage sensor can convert a high-voltage signal into a low-voltage signal. The voltage sensor is electrically connected to the charged indicator. Whether the high-voltage end is charged can be observed through the charged indicator. .

Furthermore, an electromagnetic lock can also be added. The electromagnetic lock is electrically connected to the live display. The electrical display can drive the electromagnetic lock so that the electromagnetic lock cannot be unlocked when the high-voltage end is powered, thus achieving the purpose of protecting personnel safety.

In the high-voltage cabinet of this embodiment, corresponding partitions are added with the mounting bracket 11 in the housing 10 as the boundary, forming two high-voltage compartments on the left and right, which are the cable room 100 and the load switch room 200, that is, the high-voltage primary incoming line room and the load switch room 200. Outlet room. A lightning arrester 42 and a corresponding cable busbar 41 are arranged in the cable room 100. The lightning arrester 42 is set at the bottom of the cable room 100 and is connected to the cable busbar 41 through the soft connection provided by the lightning arrester 42. One end of the cable busbar 41 is connected to the insulator 43. The other end is connected to the lower contact of the isolating switch 22. In the load switch room 200, the isolation switch 22 is connected to the fuse 23 through the conductive rod 25 in the first wall bushing 24. The fuse 23 is connected to the high-voltage arc extinguishing chamber. The high-voltage current transformer 30 is placed at the bottom of the load switch room 200. , one end of which is connected to the vacuum arc extinguishing chamber 21 through a copper flexible bus connection, and the other end is connected to the wall busbar 70 passing through the second wall bushing 60 . The high-voltage cabinet is also equipped with an instrument room, and the measurement and control unit 52, the opening and closing switch 51, the indicator light 53, etc. are installed in the instrument room (door panel) to form a complete metal-enclosed switchgear and control equipment.

Using the high-voltage cabinet of this embodiment, when performing the opening operation of the high-voltage circuit, first, the vacuum arc extinguishing chamber 21 is opened through the opening and closing 51 or the measurement and control unit 52, and then the isolation switch 22 is opened manually; When performing the closing operation of the high-voltage circuit, first, the isolating switch 22 is manually closed, and then the vacuum arc extinguishing chamber 21 is closed through the opening and closing 51 or the measurement and control unit 52 .

According to the above description, this patent application has the following advantages:

1. The measurement of high-voltage current is realized. The high-voltage current transformer transmits the measured high-voltage current signal to the monitoring component, thereby realizing the monitoring of high-voltage current.

2. By setting fuses, the safety performance of high-voltage circuits is improved.

3. By setting the grounding switch to the high-voltage circuit, it plays a role in grounding protection.

4. By installing lightning arresters in high-voltage circuits, it plays a role in lightning protection.

Obviously, the above-mentioned embodiments are only examples for clear explanation and are not intended to limit the implementation. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. An exhaustive list of all implementations is neither necessary nor possible. The obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims (10)

1. A high-voltage board, characterized by comprising:

a housing (10), the housing (10) being provided with a mounting bracket (11);

the switch assembly (20) is arranged on the mounting frame (11), and one end of the switch assembly (20) is suitable for being connected with an incoming cable;

the high-voltage current transformer (30) is electrically connected with the other end of the switch assembly (20), and the high-voltage current transformer (30) is suitable for being electrically connected with a transformer;

the isolation assembly (40), the said isolation assembly (40) is connected with said switch assembly (20) electrically, the said isolation assembly (40) is suitable for being connected with incoming line cable electrically;

the monitoring assembly (50), the monitoring assembly (50) with switch subassembly (20) electric connection, the monitoring assembly (50) with high-voltage current transformer (30) electric connection.

2. The high-voltage cabinet according to claim 1, wherein the monitoring assembly (50) comprises a switching-on/off switch (51) and a measurement and control unit (52), the switching-on/off switch (51) is electrically connected with the switch assembly (20), the measurement and control unit (52) is electrically connected with the switch assembly (20), and the measurement and control unit (52) is electrically connected with the high-voltage current transformer (30).

3. The high-voltage board according to claim 2, wherein the monitoring assembly (50) further comprises an indicator lamp (53), the indicator lamp (53) is electrically connected with the opening/closing switch (51), and the indicator lamp (53) is suitable for displaying the working state of the opening/closing switch (51).

4. A high-voltage board according to any one of claims 1-3, characterized in that the switch assembly (20) comprises a vacuum interrupter (21) and a disconnector (22), the disconnector (22) being arranged in series with the vacuum interrupter (21), the vacuum interrupter (21) being electrically connected with the high-voltage current transformer (30), the vacuum interrupter (21) being electrically connected with the monitoring assembly (50).

5. The high-voltage board according to claim 4, characterized in that the switch assembly (20) further comprises a fuse (23), the fuse (23) being arranged in series between the disconnector (22) and the vacuum interrupter (21).

6. The high-voltage cabinet according to claim 5, wherein the switch assembly (20) further comprises a first wall bushing (24) and a conductive rod (25), the conductive rod (25) being disposed within the first wall bushing (24), the conductive rod (25) connecting the fuse (23) and the isolating switch (22).

7. The high-voltage board according to claim 5, wherein the switch assembly (20) further comprises a grounding switch (26), the grounding switch (26) is electrically connected with the vacuum interrupter (21), and the grounding switch (26) is electrically connected with the fuse (23).

8. A high voltage cabinet according to any one of claims 1-3, further comprising a second wall bushing (60) and a wall bushing (70), said second wall bushing (60) being arranged through said housing (10), said wall bushing (70) being arranged in said second wall bushing (60), said wall bushing (70) being adapted to connect said high voltage current transformer (30) and said transformer.

9. A high-voltage board according to any one of claims 1-3, characterized in that the isolation assembly (40) comprises a cable busbar (41) and a lightning arrester (42), the cable busbar (41) being adapted to be electrically connected with an incoming cable, the cable busbar (41) being connected with the switch assembly (20), the lightning arrester (42) being connected with the cable busbar (41), the lightning arrester (42) being connected with the housing (10).

10. The high-voltage cabinet according to claim 9, wherein the isolation assembly (40) further comprises an insulator (43), the insulator (43) being connected between the housing (10) and the cable busbar (41).