CN211605701U - Combined high-voltage switch cabinet - Google Patents

Abstract

The utility model discloses a modular high tension switchgear, include main bus bar cabinet, reserve bus bar cabinet, circuit breaker cabinet and the cable cabinet of being qualified for the next round of competitions. The main bus cabinet comprises a first fixed contact; the circuit breaker cabinet is arranged below the main bus cabinet, is provided with a first moving contact aligned with the first fixed contact and is also provided with a second moving contact; the outgoing cable cabinet is arranged on one side of the circuit breaker cabinet and is provided with a second fixed contact and a third moving contact which are aligned with the second moving contact; the standby bus cabinet is arranged above the outgoing cable cabinet and is provided with a third static contact aligned with the third moving contact. The first moving contact can be connected with or disconnected from the first fixed contact, the second moving contact can be connected with or disconnected from the second fixed contact, and the third moving contact can be connected with or disconnected from the third fixed contact. The utility model discloses can not have a power failure and change main bus cabinet, circuit breaker cabinet or the reserve bus cabinet of combination formula cubical switchboard, realize the quick maintenance function.

Description

Combined high-voltage switch cabinet

Technical Field

The utility model relates to an electronic equipment technical field especially relates to a modular high tension switchgear.

Background

The switch cabinet is an electric device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, and each branch circuit is arranged according to the requirement. Such as meters, automatic controls, magnetic switches of motors, various alternating current contactors, and the like, and also high-voltage chamber and low-voltage chamber switch cabinets, high-voltage buses, such as power plants, and the like, and low-frequency load reducers for protecting main equipment.

At present, when a high-voltage switch cabinet breaks down, power is generally cut off first, and then operation and maintenance personnel can process electrical faults or replace electrical elements. In the processing process, operation and maintenance personnel need to disassemble the switch cabinet firstly, then disassemble the connecting line of the fault element, and then process or replace the fault element. Due to the complex structure in some switch cabinets, the operation and maintenance personnel even need to detach the good elements first to process the fault elements. The switch cabinet has more maintenance steps and longer maintenance time, and causes great trouble to power users.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular high tension switchgear can be under the circumstances of not having a power failure the interior constitution cabinet body of quick replacement cubical switchboard, realizes the quick maintenance to the cubical switchboard.

To achieve the purpose, the utility model adopts the following technical proposal:

a combined high-voltage switch cabinet comprises a main bus cabinet, a standby bus cabinet, a breaker cabinet and an outgoing cable cabinet;

the main bus cabinet comprises a first cabinet body, and the first cabinet body comprises a first cabinet side plate and a second cabinet side plate; a first side plate of the cabinet) is fixedly provided with a first fixed contact, a second side plate of the cabinet is provided with a first through hole, and the first through hole is aligned with the first fixed contact;

the circuit breaker cabinet is arranged below the main bus cabinet and comprises a second cabinet body, and the second cabinet body comprises two cabinet first side plates and two cabinet second side plates; a second through hole aligned with the first through hole is formed in the first side plate of the two cabinets, and a first moving contact aligned with the first fixed contact is arranged on the second side plate of the two cabinets; the second side plate of the second cabinet is also provided with a second moving contact and a third through hole, and the third through hole is aligned with the second moving contact;

the outgoing cable cabinet is arranged on one side, close to the second side plate of the second cabinet, of the circuit breaker cabinet and comprises a third cabinet body, and the third cabinet body comprises a first side plate of the third cabinet and a second side plate of the third cabinet; the third cabinet first side plate is provided with a fourth through hole aligned with the third through hole, and a second static contact aligned with the second moving contact is fixedly insulated; a fifth through hole and a third moving contact are arranged on the second side plate of the third cabinet, and the third moving contact is aligned with the fifth through hole;

the standby bus cabinet is arranged above the outgoing cable cabinet and is abutted against the main bus cabinet and comprises a fourth cabinet body; the fourth cabinet body comprises a fourth cabinet first side plate, the fourth cabinet first side plate is provided with a sixth through hole aligned with the fifth through hole, and a third static contact aligned with the third moving contact is fixedly arranged in the standby bus cabinet;

the diameter of the first through hole and the diameter of the second through hole are larger than the maximum outer diameter of the first moving contact, the diameter of the third through hole and the diameter of the fourth through hole are larger than the maximum outer diameter of the second moving contact, and the diameter of the fifth through hole and the diameter of the sixth through hole are larger than the maximum diameter of the third moving contact.

The first moving contact is used for penetrating through the first through hole and the second through hole to be connected with the first fixed contact; the second moving contact is used for penetrating through the third through hole and the fourth through hole to be connected with the second fixed contact; the third moving contact is used for penetrating through the fifth through hole and the sixth through hole to be connected with the third fixed contact.

Optionally, the circuit breaker cabinet further comprises a first driving device and a second driving device fixedly arranged on the second side plate of the two cabinets; the outgoing cable cabinet also comprises a third driving device fixedly arranged on a second side plate of the third cabinet; the first driving device is fixedly provided with a first moving contact and can drive the first moving contact to move towards the direction of the first fixed contact; the second driving device is fixedly provided with a second moving contact and can drive the second moving contact to move towards the direction of the second fixed contact; the third driving device is fixedly provided with a third moving contact and can drive the third moving contact to move towards the direction of the third fixed contact.

Optionally, the first moving contact, the second moving contact and the third moving contact are further respectively connected with a first auxiliary fixed contact, a second auxiliary fixed contact and a third auxiliary fixed contact in a conducting manner; the first pair of moving contacts and the first moving contact are both fixedly arranged on a platform of the first driving device, the second pair of moving contacts and the second moving contact are fixedly arranged on a platform of the second driving device, and the third pair of moving contacts and the third moving contact are fixedly arranged on a platform of the third driving device.

Optionally, the main bus cabinet further comprises a main bus, a secondary control cabinet and a first pressure relief channel; the main bus is connected with the first fixed contact, the pressure relief channel is arranged on one side, close to the main bus, of the first side plate of the first cabinet, and the second control cabinet is arranged on one side, close to the main bus, of the second side plate of the first cabinet.

Optionally, the second cabinet body further includes a second cabinet third side plate, a circuit breaker is fixedly disposed on the second cabinet third side plate, a first auxiliary stationary contact is fixedly disposed at one end of the circuit breaker, and a second auxiliary stationary contact is fixedly disposed at the other end of the circuit breaker; the first driving device drives the first moving contact and the first auxiliary moving contact to move upwards at the same time, and the first moving contact and the first auxiliary moving contact are respectively connected with the first fixed contact and the first auxiliary fixed contact in a conduction mode when in position; the second driving device simultaneously drives the second moving contact and the second auxiliary moving contact to move upwards, and the second fixed contact and the second auxiliary fixed contact are respectively connected with the second fixed contact and the second auxiliary fixed contact in a conducting manner when the second driving device is in position; the circuit breaker is used for conducting the first moving contact and the first fixed contact.

Optionally, the third cabinet first side plate is further fixedly connected with a third auxiliary static contact which is conducted with the second static contact in an insulating manner; the third driving device drives the third moving contact and the third pair of moving contacts to move upwards at the same time, and the third fixed contact and the third pair of fixed contacts are respectively connected with the third fixed contact and the third pair of fixed contacts in a conduction mode when the third driving device is in place.

Optionally, the standby bus cabinet further includes a standby bus and a second pressure relief channel, the standby bus is connected to the third stationary contact, and the second pressure relief channel is disposed on a side of the fourth cabinet body close to the main bus cabinet.

Optionally, the outgoing cable cabinet further includes an outgoing cable and a ground switch, and the ground switch is arranged on the first side plate of the three cabinets in an insulating manner.

Optionally, a mutual inductor is further sleeved at one end of the outgoing breaker connected with the second pair of fixed contacts.

Optionally, a first protective door is hinged to one side, close to the first fixed contact, of the second side plate of the cabinet, and the first protective door is used for protecting the first through hole; one side of the first side plate of the third cabinet, which is close to the second fixed contact, is hinged with a second protective door, and the second protective door is used for protecting the second through hole; one side of the fourth cabinet first side plate, which is close to the third static contact, is hinged with a third protection door, and the third protection door is used for protecting a sixth through hole.

Specifically, the rapid maintenance process of the combined high-voltage switch cabinet is as follows:

when the main bus cabinet works normally, the first moving contact is connected with the first fixed contact, and the second moving contact is also connected with the second fixed contact. The current supplies power to the load on the outgoing cable from the main bus through the first fixed contact, the first moving contact, the second moving contact and the second fixed contact. At this moment, the third moving contact and the third static contact are kept disconnected, and a maintainer can directly replace the standby bus cabinet or overhaul the standby bus cabinet.

And secondly, when the main bus cabinet 1 breaks down, the third driving device drives the third moving contact to move upwards, so that the main bus and the standby bus simultaneously perform equipotential power supply on the cable, and the load is prevented from being powered off.

And thirdly, the second driving device drives the second moving contact to move rightwards, so that the second moving contact is separated from the second fixed contact. At this time, the power of the main bus bar cabinet can be turned off, so that the main bus bar cabinet and the breaker cabinet are kept in a power-off state. After the power failure, a maintenance person can directly replace the main bus cabinet or the circuit breaker.

And finally, if the main bus cabinet and the breaker cabinet need to be separated, the first driving device can be controlled to move downwards to separate the first moving contact from the first fixed contact. At this time, the main bus bar cabinet may be replaced.

Compared with the prior art, the utility model discloses following beneficial effect has: when the main bus cabinet breaks down, the main bus cabinet can be switched to the standby bus cabinet through the third moving contact and the third static contact to supply power to the outgoing cable; when the standby bus bar cabinet supplies power, operation and maintenance personnel can disconnect the first moving contact and the first fixed contact and the second moving contact and the second fixed contact, and the main bus bar cabinet or the circuit breaker cabinet is quickly replaced. When the standby bus cabinet breaks down, operation and maintenance personnel can switch the first moving contact, the first fixed contact, the second moving contact and the second fixed contact to the main bus cabinet for supplying power; when the main bus cabinet supplies power, operation and maintenance personnel can disconnect the third moving contact and the third static contact to directly replace the standby bus cabinet. This modular cubical switchboard can change main bus cabinet, reserve bus or circuit breaker cabinet under the circumstances of not having a power failure, realizes the quick maintenance to the cubical switchboard.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose.

Fig. 1 is a schematic structural diagram of a combined high-voltage switch cabinet provided by an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a main bus bar of a combined high-voltage switch cabinet provided by the embodiment of the present invention.

Fig. 3 is a schematic diagram of a circuit breaker cabinet structure of a combined high-voltage switch cabinet provided by the embodiment of the utility model.

Fig. 4 is a schematic structural diagram of an outlet cable cabinet of the combined high-voltage switch cabinet provided by the embodiment of the utility model.

Fig. 5 is a schematic structural view of a spare bus bar cabinet of the combined high-voltage switch cabinet provided by the embodiment of the present invention.

Illustration of the drawings: the main bus bar cabinet 1, the main bus bar 11, the first fixed contact 12, the first cabinet side plate 13, the second cabinet side plate 14, the first through hole 141, the first pressure relief channel 15, the first protective door 16, the first rotating shaft 161, the secondary control cabinet 17, the breaker cabinet 2, the first movable contact 21, the first secondary movable contact 211, the second movable contact 22, the second secondary movable contact 221, the first cabinet side plate 23, the second through hole 231, the second cabinet side plate 24, the third through hole 241, the third cabinet side plate 25, the breaker 26, the first secondary fixed contact 261, the second secondary fixed contact 262, the mutual inductor 27, the first driving device 28, the second driving device 29, the outgoing cable cabinet 3, the grounding switch 30, the third movable contact 31, the third secondary movable contact 311, the third secondary fixed contact 32, the first cabinet side plate 34, the fourth through hole 341, the second cabinet side plate 35, the fifth through hole 351, the second protective door 36, the second rotating shaft 361, the third rotating shaft 361, The system comprises a second fixed contact 37, a third driving device 38, an outgoing cable 39, a spare bus cabinet 4, a spare bus 41, a fourth cabinet first side plate 42, a sixth through hole 421, a third protection door 43, a third rotating shaft 431, a third fixed contact 44 and a second pressure relief channel 45.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 1-5, the present embodiment provides a combined high voltage switch cabinet, which includes a main bus bar cabinet 1, a standby bus bar cabinet 4, a circuit breaker cabinet 2, and an outgoing cable cabinet 3.

The main bus cabinet 1 includes a first cabinet body including a first cabinet side plate 13 and a second cabinet side plate 14. The first cabinet body comprises a main bus 11 and a first fixed contact 12 which is connected with the main bus 11 in a conduction mode. The first fixed contact 12 is fixedly connected to a first side plate 13 of the cabinet.

The circuit breaker cabinet 2 comprises a second cabinet body comprising a second cabinet first side plate 23 and a second cabinet second side plate 24. The second cabinet first side plate 23 is provided with a second through hole 231 aligned with the first through hole 141. The first side plate 23 of the second cabinet is provided with a first driving device 28.

Specifically, the first driving device 28 can drive the first movable contact 21 and the first movable contact pair 211 to move up and down. When moving upward, the first movable contact 21 passes through the first through hole 141 and the second through hole 231 to be connected to the first stationary contact 12. At this time, the first movable contact pair 211 is also connected to the first stationary contact pair 261. The second side plate 24 of the second cabinet is also fixedly provided with a second driving device 29. The second driving device 29 is fixedly provided with a second movable contact 22 and a second pair of movable contacts 221. The second driving device 29 can drive the second movable contact 22 and the second pair of movable contacts 221 to move left and right. When the second moving contact 22 moves leftward, the second moving contact passes through the third through hole 241 and the fourth through hole 341 to be connected with the second stationary contact 37; and the second pair of moving contacts 221 moves together leftward to connect with the second pair of stationary contacts 262. The circuit breaker 26 is disposed on the third side plate 25 of the second cabinet and is used for conducting the first movable contact 21 and the second movable contact 22. It should be understood that the driving means may be driven by a cylinder, a motor or a hydraulic drive.

The outlet cable cabinet 3 comprises a third cabinet first side plate 34 and a third cabinet second side plate 35. The third cabinet first side plate is provided with a fourth through hole 341, the third cabinet second side plate 35 is provided with a fifth through hole 351, and the third cabinet second side plate 35 is provided with a third driving device 38. The third driving device 38 is provided with a third movable contact 31 and a third movable contact 311 which are mutually conducted. The third driving device 38 can drive the third movable contact 31 to move up and down. When moving upward, the third stationary contact 44 passes through the fifth through hole 351 and the sixth through hole 421 to be connected. At this time, the third moving contact 311 moves upward together and is connected to the third stationary contact 32. The third cabinet first side plate 34 is provided with a second fixed contact 37 in an insulated manner. The second stationary contact 37 is opposite to the second movable contact 22, and is used for realizing the connection between the second stationary contact 37 and the second stationary contact 37. The second stationary contact 37 is simultaneously connected to the third stationary contact 32.

The spare bus bar cabinet 4 is provided with a spare bus bar 41 and a third fixed contact 44 therein. The standby bus cabinet 4 comprises a fourth cabinet body, and a sixth through hole 421 is arranged on a first side plate of the fourth cabinet body. The third stationary contact 44 faces the sixth through hole 421.

In addition, considering that the electrified cabinet may have an arcing phenomenon, the main bus cabinet 1 is provided with a first pressure relief channel 15 at one side close to a first side plate of the main bus cabinet, and the first pressure relief channel is used for releasing high-pressure gas generated by an arcing fault of the circuit breaker cabinet 2; and a second pressure relief channel 45 is arranged on one side of the standby bus cabinet 4 close to the main bus cabinet 1 and used for releasing high-pressure gas generated by arcing faults of the line cable cabinet 3. In addition, a secondary control cabinet 17 may be provided at a place where the space of the main bus bar cabinet 1 is large.

In addition, the main bus bar cabinet 1 is provided with a first protection door 16 in the vicinity of the first through hole 141. The first protection door 16 is rotated by the first rotation shaft 161 to avoid or protect the first through hole 141. The outlet cable cabinet 3 is provided with a second protective door 36 near the fourth through hole 341 to avoid or protect the fourth through hole 341. The spare busbar cabinet 4 is provided with a third protection door 43 near the sixth through hole 421. The third prevention door 43 is rotated by the third rotation shaft 431 to avoid or prevent the first through hole 421.

For the detection of the current, a transformer 27 is provided on the circuit breaker 26 in the circuit breaker cabinet 2. The transformer 26 is used to sense current data.

In consideration of practical situations, the diameter of the first through hole 141 and the diameter of the second through hole 231 are larger than the outer diameter of the first movable contact 21, the diameter of the third through hole 241 and the diameter of the fourth through hole 341 are larger than the outer diameter of the second movable contact 22, and the diameter of the fifth through hole 351 and the diameter of the sixth through hole 421 are larger than the diameter of the third movable contact 31.

Specifically, the working process of the combined high-voltage switch cabinet equal potential switching main bus cabinet 1 and the standby bus cabinet 4 is as follows:

firstly, the main bus cabinet works normally. The first movable contact 21 is connected to the first stationary contact 12. At this time, the first auxiliary moving contact 211 is connected to the first auxiliary stationary contact 261, and the second auxiliary moving contact 221 is connected to the second auxiliary stationary contact 262. The second movable contact 22 is connected to the second stationary contact 37. That is, the current passes through the first fixed contact 12, the first movable contact 21, the first auxiliary movable contact 211, the first auxiliary fixed contact 261, the second auxiliary fixed contact 262, the second auxiliary movable contact 221, the second movable contact 22, and the second fixed contact 37 from the bus to supply power to the outgoing cable 39. At this time, the third driving device 38 keeps the third moving contact 31 and the third stationary contact 44 disconnected, so that the maintenance personnel can directly replace the standby bus bar cabinet 4.

② when the main bus cabinet 1 has a fault. The third driving device 38 drives the third moving contact 31 to move upward, and the third moving contact 31 connects with the third stationary contact 44, so that the main bus 11 and the standby bus 41 simultaneously perform equipotential power supply on the emerging cables.

Third, the second driving device 29 drives the second movable contact 22 to move rightward, so that the second movable contact 22 is separated from the second stationary contact 37. At this point, the main bus 11 power can be turned off, completely de-energizing the main bus cabinet 1 and the breaker cabinet 2. After the power failure, the maintenance personnel can directly replace the main bus cabinet 1 and the circuit breaker cabinet 2.

And finally, controlling the first driving device 28 to drive the first movable contact 21 to move downwards, and separating the first movable contact 21 from the first fixed contact 12. At this time, the main bus bar cabinet 1 or the circuit breaker cabinet 2 can be conveniently and independently replaced.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A combined high-voltage switch cabinet is characterized by comprising a main bus cabinet (1), a standby bus cabinet (4), a circuit breaker cabinet (2) and an outgoing cable cabinet (3);

the main bus cabinet (1) comprises a first cabinet body, and the first cabinet body comprises a first cabinet side plate (13) and a second cabinet side plate (14); a first fixed contact (12) is fixedly arranged on the first cabinet first side plate (13), a first through hole (141) is formed in the first cabinet second side plate (14), and the first through hole (141) is aligned with the first fixed contact (12);

the circuit breaker cabinet (2) is arranged below the main bus cabinet (1) and comprises a second cabinet body, and the second cabinet body comprises a second cabinet first side plate (23) and a second cabinet second side plate (24); a second through hole (231) aligned with the first through hole (141) is formed in the first side plate (23) of the second cabinet, and a first moving contact (21) aligned with the first fixed contact (12) is formed in the second side plate (24) of the second cabinet; the second side plate (24) of the second cabinet is also provided with a second movable contact (22) and a third through hole (241), and the third through hole (241) is aligned with the second movable contact (22);

the outgoing cable cabinet (3) is arranged on one side, close to the second side plate (24), of the circuit breaker cabinet (2) and comprises a third cabinet body, and the third cabinet body comprises a third cabinet first side plate (34) and a third cabinet second side plate (35); the third side plate (34) is provided with a fourth through hole (341) aligned with the third through hole (241), and a second fixed contact (37) aligned with the second movable contact (22) is fixedly arranged in an insulating manner; the third cabinet second side plate (35) is provided with a fifth through hole (351) and a third moving contact (31), and the third moving contact (31) is aligned with the fifth through hole (351);

the standby bus cabinet (4) is arranged above the outgoing cable cabinet (3), abuts against the main bus cabinet (1) and comprises a fourth cabinet body; the fourth cabinet body comprises a fourth cabinet first side plate (42), the fourth cabinet first side plate (42) is provided with a sixth through hole (421) aligned with the fifth through hole (351), and a third fixed contact (44) aligned with the third movable contact (31) is fixedly arranged in the spare bus cabinet (4);

the diameter of the first through hole (141) and the diameter of the second through hole (231) are larger than the maximum outer diameter of the first movable contact (21), the diameter of the third through hole (241) and the diameter of the fourth through hole (341) are larger than the maximum outer diameter of the second movable contact (22), and the diameter of the fifth through hole (351) and the diameter of the sixth through hole (421) are larger than the maximum diameter of the third movable contact (31);

the first movable contact (21) is used for being connected with the first fixed contact (12) through the first through hole (141) and the second through hole (231); the second movable contact (22) is used for being connected with the second fixed contact (37) through the third through hole (241) and the fourth through hole (341); the third moving contact (31) is used for penetrating through the fifth through hole (351) and the sixth through hole (421) to be jointed with the third fixed contact (44).

2. Combined high voltage switchgear according to claim 1, characterized in that the circuit breaker cabinet (2) further comprises a first drive (28) and a second drive (29) fastened to the second side panel (24) of the second cabinet; the outgoing cable cabinet (3) further comprises a third driving device (38) fixedly arranged on a second side plate (35) of the third cabinet; the first driving device (28) is fixedly provided with the first movable contact (21), and can drive the first movable contact (21) to move towards the direction of the first fixed contact (12); the second driving device (29) is fixedly provided with the second movable contact (22), and can drive the second movable contact (22) to move towards the direction of the second fixed contact (37); the third driving device (38) is fixedly provided with the third movable contact (31), and can drive the third movable contact (31) to move towards the direction of the third fixed contact (44).

3. The combined high-voltage switch cabinet according to claim 2, further comprising a first secondary moving contact (211), a second secondary moving contact (221), and a third secondary moving contact (311), wherein the first moving contact (21), the second moving contact (22), and the third moving contact (31) are sequentially and respectively connected to a first secondary static contact (261), a second secondary static contact (262), and a third secondary static contact (32); the first pair of moving contacts (211) and the first moving contact (21) are both fixed on the platform of the first driving device (28), the second pair of moving contacts (221) and the second moving contact (22) are fixed on the platform of the second driving device (29), and the third pair of moving contacts (311) and the third moving contact (31) are fixed on the platform of the third driving device (38).

4. The modular high-voltage switchgear cabinet according to claim 1, characterized in that said main busbar cabinet (1) further comprises a main busbar (11), a secondary control cabinet (17) and a first pressure relief channel (15); the main bus (11) is connected with the first fixed contact (12), the pressure relief channel is arranged on one side, close to the main bus (11), of the first cabinet side plate (13), and the secondary control cabinet (17) is arranged on one side, close to the main bus (11), of the second cabinet side plate (14).

5. The combined high-voltage switch cabinet according to claim 3, wherein the second cabinet body further comprises a second cabinet third side plate (25), a circuit breaker (26) is fixedly arranged on the second cabinet third side plate (25), a first secondary stationary contact (261) is fixedly arranged at one end of the circuit breaker (26), and a second secondary stationary contact (262) is fixedly arranged at the other end of the circuit breaker (26); the first driving device (28) drives the first movable contact (21) and the first auxiliary movable contact (211) to move upwards at the same time, and when the first movable contact (21) and the first auxiliary movable contact (211) are in position, the first movable contact (12) and the first auxiliary fixed contact (261) are respectively connected with the first fixed contact (12) and the first auxiliary fixed contact in a conduction manner; the second driving device (29) drives the second movable contact (22) and the second auxiliary movable contact (221) to move upwards at the same time, and when the second movable contact is in position, the second fixed contact (37) and the second auxiliary fixed contact (262) are respectively in conductive connection with the second fixed contact (37) and the second auxiliary fixed contact (262); the breaker (26) is used for conducting the first movable contact (21) and the first fixed contact (12).

6. The combined high-voltage switch cabinet according to claim 3, wherein the third cabinet first side plate (34) is further fixed with a third auxiliary stationary contact (32) in an insulating manner, and the third auxiliary stationary contact is conducted with the second stationary contact (37); the third driving device (38) drives the third movable contact (31) and the third auxiliary movable contact (311) to move upwards at the same time, and when in position, the third fixed contact (44) and the third auxiliary fixed contact (32) are respectively connected with the third fixed contact (44) and the third auxiliary fixed contact (32) in a conduction manner.

7. The combined high-voltage switch cabinet according to claim 1, wherein the standby bus bar cabinet (4) further comprises a standby bus bar (41) and a second pressure relief channel (45), the standby bus bar (41) is connected to the third stationary contact (44), and the second pressure relief channel (45) is disposed on a side of the fourth cabinet body close to the main bus bar cabinet (1).

8. The combined high-voltage switch cabinet according to claim 1, wherein the outgoing cable cabinet (3) further comprises an outgoing cable (39) and a grounding switch (30), and the grounding switch (30) is arranged on the first side plate (34) of the three cabinets in an insulating manner.

9. The combined high-voltage switch cabinet according to claim 5, characterized in that the end of the circuit breaker (26) connected to the second pair of stationary contacts (262) is further sleeved with a transformer (27).

10. The combined high-voltage switch cabinet according to claim 1, wherein a side of the second side plate (14) close to the first fixed contact (12) is hinged with a first protective door (16), and the first protective door (16) is used for protecting the first through hole (141); a second protective door (36) is hinged to one side, close to a second fixed contact (37), of the first side plate (34) of the third cabinet, and the second protective door (36) is used for protecting the second through hole (231); one side, close to the third fixed contact (44), of the fourth side plate (42) is hinged to a third protection door (43), and the third protection door (43) is used for protecting the sixth through hole (421).

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