CN210926616U - Combined electrical apparatus, vehicular combined electrical apparatus and portable transformer substation - Google Patents

Abstract

The utility model relates to a transformer substation technical field, in particular to combined electrical apparatus, vehicular combined electrical apparatus and portable transformer substation. The combined electrical appliance comprises a horizontal circuit breaker, wherein the upper sides of two ends of the circuit breaker are respectively connected with a first three-station combined switch and a second three-station combined switch, a current transformer is arranged between the circuit breaker and the first three-station combined switch, the first three-station combined switch is connected with a first cable terminal through a first horizontal cylinder, the second three-station combined switch is connected with a second cable terminal through a second horizontal cylinder, the first cable terminal and the second cable terminal are positioned on two sides of the circuit breaker, and the lower side of the second horizontal cylinder is connected with a voltage transformer and a lightning arrester; the structures in the combined electrical apparatus are arranged in a coplanar manner, and the interfaces of the first cable terminal and the second cable terminal are not higher than the higher cylinder bodies in the first horizontal cylinder body and the second horizontal cylinder body. The combined electrical apparatus has a compact structure and can meet the requirement of mobile transportation.

Description

Combined electrical apparatus, vehicular combined electrical apparatus and portable transformer substation

Technical Field

The utility model relates to a transformer substation technical field, in particular to combined electrical apparatus, vehicular combined electrical apparatus and portable transformer substation.

Background

The movable transformer substation has the advantages of flexibility, convenience in transportation, strong road adaptability, no need of occupying land for a long time and the like, and can be deployed into a transformer substation with a corresponding voltage class at any time to be used when sudden power equipment faults, natural disasters or temporary replacement power supply demands are met, so that stable power supply of a power grid is guaranteed.

At present, the voltage class of a mobile substation is generally limited below 110kV, and the ever-increasing power load and power emergency requirements are difficult to meet, so that the mobile substation developing the 220KV voltage class is imperative, but the higher the voltage class of the mobile substation is, the larger the equipment is, the larger the insulation distance requirement is, the larger the whole occupied space of the mobile substation is, and the road transportation requirement is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a combined electrical apparatus which can be applied to a mobile transformer substation for vehicle-mounted transportation with 220KV voltage level; the utility model also provides a vehicle-mounted combined electrical apparatus which can be applied to a mobile substation with 220KV voltage level; the utility model also provides an use above-mentioned vehicular composite apparatus's portable transformer substation for solve the lower problem of current portable transformer substation voltage level.

In order to achieve the above object, the utility model provides a combined electrical apparatus adopts following technical scheme:

the combined electrical apparatus comprises a horizontal circuit breaker, wherein the upper sides of two ends of the horizontal circuit breaker are respectively connected with a first three-station combined switch and a second three-station combined switch, a current transformer is arranged between the horizontal circuit breaker and the first three-station combined switch, the first three-station combined switch is connected with a first cable terminal through a first horizontal cylinder, the second three-station combined switch is connected with a second cable terminal through a second horizontal cylinder, the first cable terminal and the second cable terminal are positioned on two sides of the horizontal circuit breaker, and the lower side of the second horizontal cylinder is connected with a voltage transformer and a lightning arrester; the first cable terminal, the first horizontal cylinder, the first three-station combination switch, the current transformer, the horizontal circuit breaker, the second three-station combination switch, the second horizontal cylinder, the voltage transformer, the lightning arrester and the second cable terminal are arranged in a coplanar manner, and interfaces of the first cable terminal and the second cable terminal are not higher than the cylinder bodies which are higher in the first horizontal cylinder and the second horizontal cylinder.

The utility model provides a combined electrical apparatus's beneficial effect is: the structures in the combined electrical apparatus are arranged in a coplanar manner, so that the combined electrical apparatus occupies a smaller space in a direction vertical to the plane of the structures; in addition, the cable terminal is used for replacing a wiring sleeve, so that the condition that the overall height of the combined electrical appliance is higher due to the fact that the wiring sleeve extends upwards for a higher distance is avoided, and the combined electrical appliance occupies a smaller space in the height direction; in a word, the combined electrical apparatus is installed on a vehicle, can meet the road transportation requirement, and provides a technical basis for the formation of a mobile substation.

Further, at least one of the first cable termination and the second cable termination is disposed vertically downward. By the arrangement, the size of the combined electrical appliance in the spacing direction of the first cable terminal and the second cable terminal can be reduced, and the space occupied by the combined electrical appliance is further reduced; in addition, the cable terminal is arranged vertically downwards, so that the cable can enter the ground conveniently, and the cable can be protected conveniently.

Further, the operating mechanism of the horizontal type circuit breaker is located between the horizontal type circuit breaker and one of the voltage transformer and the arrester which is close to the horizontal type circuit breaker. The combined electrical apparatus is more compact in structure and smaller in occupied space due to the arrangement.

The utility model provides a vehicular combined electrical apparatus adopts following technical scheme:

the vehicle-mounted combined electrical apparatus comprises a vehicle body and three combined electrical apparatus units arranged on the vehicle body, wherein the three combined electrical apparatus units are arranged side by side along the width direction of the vehicle body; the combined electrical appliance unit comprises a horizontal circuit breaker, wherein the upper sides of two ends of the horizontal circuit breaker are respectively connected with a first three-station combined switch and a second three-station combined switch, a current transformer is arranged between the horizontal circuit breaker and the first three-station combined switch, the first three-station combined switch is connected with a first cable terminal through a first horizontal cylinder, the second three-station combined switch is connected with a second cable terminal through a second horizontal cylinder, the first cable terminal and the second cable terminal are positioned on two sides of the horizontal circuit breaker, and the lower side of the second horizontal cylinder is connected with a voltage transformer and a lightning arrester; the first cable terminal, the first horizontal cylinder, the first three-station combination switch, the current transformer, the horizontal circuit breaker, the second three-station combination switch, the second horizontal cylinder, the voltage transformer, the lightning arrester and the second cable terminal are arranged in a coplanar manner, and interfaces of the first cable terminal and the second cable terminal are not higher than the cylinder bodies which are higher in the first horizontal cylinder and the second horizontal cylinder.

The utility model provides a vehicular combined electrical apparatus's beneficial effect is: the structures of the combined electrical apparatus units in the vehicle-mounted combined electrical apparatus are arranged in a coplanar manner, so that the space occupied by the combined electrical apparatus units in the direction vertical to the surface of the structures is smaller, and the space occupied by the vehicle-mounted combined electrical apparatus in the width direction is smaller; in addition, the cable terminal is used for replacing a wiring sleeve, so that the situation that the overall height of each combined electrical appliance unit is higher due to the fact that the wiring sleeve extends upwards for a higher distance is avoided, and the vehicle-mounted combined electrical appliance occupies a smaller space in the height direction; in a word, this vehicular combined electrical apparatus is all less in width direction and direction of height occupation space, can satisfy the road transportation demand, provides the technical basis for the formation of portable transformer substation.

Further, at least one of the first cable terminal and the second cable terminal in each of the composite electrical units is disposed vertically downward. By the arrangement, the size of each combined electrical appliance unit in the spacing direction of the first cable terminal and the second cable terminal can be reduced, and the space occupied by the vehicle-mounted combined electrical appliance is further reduced; in addition, the cable terminal is arranged vertically downwards, so that the cable can enter the ground conveniently, and the cable can be protected conveniently.

Further, the operating mechanism of the horizontal type circuit breaker is located between the horizontal type circuit breaker and one of the voltage transformer and the arrester which is close to the horizontal type circuit breaker. By the arrangement, the vehicle-mounted combined electrical apparatus is more compact in structure and smaller in occupied space.

Further, the first cable terminal is located near the front end of the vehicle body, and the second cable terminal is located near the rear end of the vehicle body. The weight of the horizontal circuit breaker is generally larger, the structure that the horizontal circuit breaker leans on one side of the first cable terminal in the combined electrical appliance unit is less, the first cable terminal is arranged close to the front end of the vehicle body, the horizontal circuit breaker also leans on the front, and the whole vehicle stability of the vehicle-mounted combined electrical appliance can be improved.

Furthermore, the vehicle body is provided with an adjusting supporting leg for adjusting the levelness of the vehicle body. By the arrangement, the levelness of the vehicle body can be ensured by adjusting the adjusting support legs before the vehicle-mounted combined electrical apparatus is put into use, and stable support is provided for the vehicle body.

Furthermore, a bracket for supporting the horizontal circuit breaker is arranged on the vehicle body, and one of the voltage transformer and the arrester, which is smaller in size in the vertical direction, is arranged close to the horizontal circuit breaker and is fixedly installed on the bracket so as to enable the upper ends of the voltage transformer and the arrester to be equal in height. The horizontal cylinder body is arranged in such a way, so that the level of the second horizontal cylinder body can be guaranteed, and the situation that one end of the second horizontal cylinder body tilts to cause the height of each combined electrical appliance unit to increase can be prevented.

The utility model provides a following technical scheme is adopted to portable transformer substation:

this portable transformer substation includes:

the first vehicle-mounted high-voltage switch module comprises a vehicle body and three combined electrical appliance units arranged on the vehicle body, wherein the three combined electrical appliance units are arranged side by side along the width direction of the vehicle body; the combined electrical appliance unit comprises a horizontal circuit breaker, wherein the upper sides of two ends of the horizontal circuit breaker are respectively connected with a first three-station combined switch and a second three-station combined switch, a current transformer is arranged between the horizontal circuit breaker and the first three-station combined switch, the first three-station combined switch is connected with a first cable terminal through a first horizontal cylinder, the second three-station combined switch is connected with a second cable terminal through a second horizontal cylinder, the first cable terminal and the second cable terminal are positioned on two sides of the horizontal circuit breaker, and the lower side of the second horizontal cylinder is connected with a voltage transformer and a lightning arrester; the first cable terminal, the first horizontal cylinder, the first three-station combination switch, the current transformer, the horizontal circuit breaker, the second three-station combination switch, the second horizontal cylinder, the voltage transformer, the lightning arrester and the second cable terminal are arranged in a coplanar manner, and interfaces of the first cable terminal and the second cable terminal are not higher than a cylinder higher than the first horizontal cylinder and the second horizontal cylinder;

the vehicle-mounted high-voltage power transformation module comprises a vehicle body and a transformer installed on the vehicle body;

the second vehicle-mounted high-voltage switch module comprises a vehicle body and a second combined electrical appliance installed on the vehicle body, and the voltage level of the second vehicle-mounted high-voltage switch module is lower than that of the first vehicle-mounted high-voltage switch module;

the vehicle-mounted control module comprises a vehicle body, and a medium-voltage power distribution module and a secondary module which are installed on the vehicle body.

The utility model provides a portable transformer substation's beneficial effect is: in the mobile substation, the structures in the combined electrical appliance units of the first vehicle-mounted high-voltage switch module are arranged in a coplanar manner, so that the combined electrical appliance units occupy smaller space in a direction perpendicular to the surface of each structure, and the first vehicle-mounted high-voltage switch module occupies smaller space in the width direction; in addition, the cable terminal is used for replacing a wiring sleeve, so that the situation that the overall height of each combined electrical appliance unit is higher due to the fact that the wiring sleeve extends upwards for a higher distance is avoided, and the first vehicle-mounted high-voltage switch module occupies a smaller space in the height direction; in a word, this on-vehicle formula high tension switchgear module of first vehicle all is less in width direction and direction of height occupation space, can satisfy the road transportation demand, and then can realize the transportation demand of this portable transformer substation.

Further, at least one of the first cable terminal and the second cable terminal in each of the composite electrical units is disposed vertically downward. By the arrangement, the size of each combined electrical appliance unit in the spacing direction of the first cable terminal and the second cable terminal can be reduced, and the space occupied by the first vehicle-mounted high-voltage switch module is further reduced; in addition, the cable terminal is arranged vertically downwards, so that the cable can enter the ground conveniently, and the cable can be protected conveniently.

Further, the operating mechanism of the horizontal type circuit breaker is located between the horizontal type circuit breaker and one of the voltage transformer and the arrester which is close to the horizontal type circuit breaker. By the arrangement, the first vehicle-mounted high-voltage switch module is more compact in structure and smaller in occupied space.

Further, the first cable terminal is located near the front end of the vehicle body, and the second cable terminal is located near the rear end of the vehicle body. The horizontal circuit breaker is generally heavy, and the horizontal circuit breaker leans on the structure to first cable termination one side less in the first on-vehicle formula high voltage switch module, arranges first cable termination near automobile body front end, and then the horizontal circuit breaker also leans on in the front, can improve first on-vehicle formula high voltage switch module's whole car stability.

Furthermore, the vehicle body is provided with an adjusting supporting leg for adjusting the levelness of the vehicle body. By the arrangement, the levelness of the vehicle body can be guaranteed by adjusting the adjusting support legs before the first vehicle-mounted high-voltage switch module is put into use, and stable support is provided for the vehicle body.

Furthermore, a bracket for supporting the horizontal circuit breaker is arranged on the vehicle body, and one of the voltage transformer and the arrester, which is smaller in size in the vertical direction, is arranged close to the horizontal circuit breaker and is fixedly installed on the bracket so as to enable the upper ends of the voltage transformer and the arrester to be equal in height. The horizontal cylinder body is arranged in such a way, so that the level of the second horizontal cylinder body can be guaranteed, and the situation that one end of the second horizontal cylinder body tilts to cause the height of each combined electrical appliance unit to increase can be prevented.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a mobile substation provided by the present invention;

fig. 2 is a front view of a first on-board high voltage switch module in an embodiment of the mobile substation provided by the present invention;

fig. 3 is a top view of a first on-board high voltage switch module in an embodiment of the mobile substation provided by the present invention.

In the drawings: 1-a first vehicle-mounted high-voltage switch module, 2-220KV vehicle-mounted single-phase transformer, 3-a second vehicle-mounted high-voltage switch module, 4-a vehicle-mounted control module, 5-a high-voltage cable, 6-a vehicle body, 7-an adjusting supporting leg, 8-a circuit breaker, 9-a support, 10-a first three-station combination switch, 11-a current transformer, 12-a first horizontal cylinder, 13-a first cable terminal, 14-a first cable terminal interface, 15-a second three-station combination switch, 16-a second horizontal cylinder, 17-a second cable terminal, 18-a second cable terminal interface, 19-a voltage transformer, 20-a lightning arrester, 21-an operating mechanism and 22-a combined electrical appliance unit.

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

The utility model provides an embodiment of portable transformer substation, specific 220KV voltage class of using as an example:

as shown in fig. 1, the mobile substation includes a first vehicle-mounted high-voltage switch module 1, a vehicle-mounted high-voltage transformation module, a second vehicle-mounted high-voltage switch module 3, and a vehicle-mounted control module 4.

As shown in fig. 1 to fig. 3, the first vehicle-mounted high-voltage switch module 1 is a 220KV vehicle-mounted combined electrical apparatus, and includes a vehicle body 6 and three combined electrical apparatus units 22 mounted on the vehicle body 6, wherein the three combined electrical apparatus units 22 are arranged side by side along the width direction of the vehicle body 6; the bottom of the vehicle body 6 is provided with four adjusting support legs 7, and the four adjusting support legs 7 are used for ensuring the levelness of the 220KV vehicle-mounted combined electrical apparatus when in use and providing stable support for the vehicle body 6; the vehicle body 6 in the embodiment is a spring suspension semitrailer vehicle body; the advancing direction of the vehicle body 6 is defined as the front side.

As shown in fig. 2, the combined electrical apparatus unit 22 includes a circuit breaker 8, the circuit breaker 8 is a horizontal circuit breaker, and the length direction thereof extends along the front and rear direction of the vehicle body 6, the circuit breaker 8 is fixedly mounted on the vehicle body 6 through a bracket 9, the front end of the circuit breaker 8 is upwards connected with a current transformer 11, the upper end of the current transformer 11 is connected with a first three-position combined switch 10, the first three-position combined switch 10 is forwards connected with a first cable terminal 13 through a first horizontal cylinder 12, and a first cable terminal interface 14 of the first cable terminal 13 is arranged vertically downwards.

As shown in fig. 2, the rear end of the circuit breaker 8 is connected to a second three-position combination switch 15 through a barrel upwards, the second three-position combination switch 15 is connected to a second cable terminal 17 through a second horizontal barrel 16, and a second cable terminal interface 18 of the second cable terminal 17 is arranged vertically downwards; a voltage transformer 19 and an arrester 20 are connected to the lower side of the second horizontal cylinder 16, wherein the size of the voltage transformer 19 in the height direction is smaller than that of the arrester 20, the voltage transformer 19 is positioned on the front side of the arrester 20, and the lower end of the voltage transformer 19 is fixedly mounted on the bracket 9, so that the upper end of the voltage transformer 19 is equal to the upper end of the arrester 20 in height, and the levelness of the second horizontal cylinder 16 is further ensured; the operating mechanism 21 of the circuit breaker 8 is located between the circuit breaker 8 and the voltage transformer 19, which makes the overall combined electrical unit 22 more compact.

In this embodiment, the circuit breaker 8, the bracket 9, the first three-position combination switch 10, the current transformer 11, the first horizontal cylinder 12, the first cable terminal 13, the second three-position combination switch 15, the second horizontal cylinder 16, the second cable terminal 17, the voltage transformer 19 and the lightning arrester 20 are arranged in a coplanar manner, and the plane of the circuit breaker is perpendicular to the width direction of the vehicle body 6; in this embodiment, the second horizontal cylinder 16 is slightly higher than the first horizontal cylinder 12, and both the first cable termination interface 13 of the first cable termination 12 and the second cable termination interface 18 of the second cable termination 17 are lower than the second horizontal cylinder 16; the 220KV vehicle-mounted combined electrical apparatus in the embodiment is a 220KV gas-insulated closed combined electrical apparatus.

As shown in fig. 1, three combined electrical units 22 in the first vehicle-mounted high-voltage switch module 1 are connected to one high-voltage cable 5 through one cable terminal thereof, and each high-voltage cable 5 transmits one phase of three-phase power, so that the three-phase power is connected to the mobile substation.

As shown in fig. 1, the vehicle-mounted high-voltage power transformation module comprises three 220KV vehicle-mounted single-phase transformers 2, the three 220KV vehicle-mounted single-phase transformers 2 comprise a vehicle body and 220KV single-phase transformers mounted on the vehicle body, and the three 220KV vehicle-mounted single-phase transformers 2 are arranged side by side when in use, so that the whole mobile substation is more reasonable and compact in layout; the three 220KV vehicle-mounted single-phase transformers 2 are respectively connected with one cable terminal of one combined electrical apparatus unit 22 in the first vehicle-mounted high-voltage switch module 1; the body of the 220KV vehicle-mounted single-phase transformer 2 is a hydraulic suspension semitrailer body; the three 220KV single-phase transformers in the embodiment are 220KV single-phase oil-immersed three-coil transformers.

As shown in fig. 1, the second onboard high-voltage switch module 3 includes a vehicle body and a second combined electrical apparatus mounted on the vehicle body, and an electricity inlet end of the second onboard high-voltage switch module 3 is connected with electricity outlet ends of three 220KV vehicle-mounted single-phase transformers 2; the vehicle body of the second vehicle-mounted high-voltage switch module 3 is a spring suspension semitrailer vehicle body; the second combined electrical apparatus in this embodiment is a 110kV gas insulated enclosed combined electrical apparatus.

As shown in fig. 1, the vehicle-mounted control module 4 belongs to a control and protection module, and includes a vehicle body, and 35 (10) KV medium-voltage distribution module and a secondary module which are installed on the vehicle body, wherein the 35 (10) KV medium-voltage distribution module is a 35KV (10) sulfur hexafluoride insulated metal enclosed armored switch cabinet, and the secondary module includes various secondary protection devices; the vehicle-mounted control module 4 is directly connected with the three 220KV vehicle-mounted single-phase transformers 2; the vehicle-mounted control module 4 is a spring suspension semi-trailer body.

In the embodiment, the width size of the 220KV vehicle-mounted single-phase transformer 2 is controlled within 3400mm, the height is controlled within 4500mm (including the height of a vehicle body), and the weight is about 80 t; the width of the 220KV vehicle-mounted combined electrical apparatus is controlled within 3000mm, the height is controlled within 4500mm (including the height of the vehicle body), and the weight is about 10 t; the width dimension of the second vehicle-mounted high-voltage switch module 3 is controlled within 3000mm, the height is controlled within 4500mm (including the height of the vehicle body), and the weight is about 30 t.

In the above embodiment, the voltage level of the mobile substation is 220KV, wherein the voltage level of the first vehicle-mounted high-voltage switch module is 220KV, and the voltage level of the second vehicle-mounted high-voltage switch module is 110 KV. In other embodiments, when the voltage level of the first vehicle-mounted high-voltage switch module is 220KV, the voltage level of the second vehicle-mounted high-voltage switch module may also be 35KV, and the same may be used; the voltage level of the mobile substation can be other levels, such as 110KV and 35KV, and of course, the voltage level of the corresponding first vehicle-mounted high-voltage switch module is the same as that of the mobile substation, and the voltage level of the second vehicle-mounted high-voltage switch module is correspondingly reduced, specifically, how much is determined according to actual requirements.

In the above embodiment, the cable terminal interfaces of the two cable terminals in each combined electrical appliance unit are both directed vertically downward. In other embodiments, the two cable termination interfaces may be oriented in other directions, for example, the first cable termination interface may be oriented horizontally forward, or in any direction that makes an angle of less than 90 ° with the vertical downward direction; the second cable termination interface may face horizontally rearward or in any direction having an angle of less than 90 ° with respect to a vertically downward direction.

In the above embodiment, the first cable terminal is located near the front end of the vehicle body, and the second cable terminal is located near the rear end of the vehicle body. In other embodiments, the second cable termination may be located near the front end of the vehicle body and the first cable termination may be located near the rear end of the vehicle body.

In the above embodiment, the size of the voltage transformer in the up-down direction is smaller than that of the arrester, so the voltage transformer is arranged on the front side of the arrester, and the voltage transformer is fixedly mounted on the bracket for mounting the circuit breaker. In other embodiments, the size of the arrester in the height direction may be smaller than that of the voltage transformer, and at this time, the arrester may be disposed on the front side of the voltage transformer and mounted on a bracket on which the circuit breaker is mounted, so that the heights of the upper ends of the arrester and the voltage transformer are equal, and the levelness of the second horizontal cylinder is further ensured; even if the size of the lightning arrester in the height direction is larger than that of the voltage transformer in the height direction, the lightning arrester can be arranged on the front side of the voltage transformer, the lightning arrester can be directly and fixedly arranged on a vehicle body at this time, the voltage transformer is provided with a special support for installation, and the upper ends of the lightning arrester and the voltage transformer can be guaranteed to be equal in height.

In the above embodiments, the operating mechanism is located between the circuit breaker and the voltage transformer. In other embodiments, the operating mechanism may be located between the circuit breaker and the first cable termination, or at other locations, and may be used.

The utility model provides a vehicular composite apparatus, this vehicular composite apparatus's structure is the same with the structure of the 220KV vehicular composite apparatus in the embodiment of above-mentioned portable transformer substation, and it is no longer repeated here.

The utility model discloses still provide a combined electrical apparatus, this combined electrical apparatus's structure is the same with the combined electrical apparatus unit's in the embodiment of above-mentioned portable transformer substation structure, and it is no longer repeated here.

Claims (10)

1. The combined electrical apparatus is characterized by comprising a horizontal circuit breaker, wherein the upper sides of two ends of the horizontal circuit breaker are respectively connected with a first three-station combined switch and a second three-station combined switch, a current transformer is arranged between the horizontal circuit breaker and the first three-station combined switch, the first three-station combined switch is connected with a first cable terminal through a first horizontal cylinder, the second three-station combined switch is connected with a second cable terminal through a second horizontal cylinder, the first cable terminal and the second cable terminal are positioned on two sides of the horizontal circuit breaker, and the lower side of the second horizontal cylinder is connected with a voltage transformer and a lightning arrester; the first cable terminal, the first horizontal cylinder, the first three-station combination switch, the current transformer, the horizontal circuit breaker, the second three-station combination switch, the second horizontal cylinder, the voltage transformer, the lightning arrester and the second cable terminal are arranged in a coplanar manner, and interfaces of the first cable terminal and the second cable terminal are not higher than the cylinder bodies which are higher in the first horizontal cylinder and the second horizontal cylinder.

2. The combination of claim 1, wherein at least one of the first cable termination and the second cable termination is oriented vertically downward.

3. The combined electrical apparatus as claimed in claim 1 or 2, wherein the operation mechanism of the horizontal type circuit breaker is located between the horizontal type circuit breaker and one of the voltage transformer and the surge arrester which is close to the horizontal type circuit breaker.

4. The vehicle-mounted combined electrical apparatus is characterized by comprising a vehicle body and three combined electrical apparatus units arranged on the vehicle body, wherein the three combined electrical apparatus units are arranged side by side along the width direction of the vehicle body; the combined electrical appliance unit comprises a horizontal circuit breaker, wherein the upper sides of two ends of the horizontal circuit breaker are respectively connected with a first three-station combined switch and a second three-station combined switch, a current transformer is arranged between the horizontal circuit breaker and the first three-station combined switch, the first three-station combined switch is connected with a first cable terminal through a first horizontal cylinder, the second three-station combined switch is connected with a second cable terminal through a second horizontal cylinder, the first cable terminal and the second cable terminal are positioned on two sides of the horizontal circuit breaker, and the lower side of the second horizontal cylinder is connected with a voltage transformer and a lightning arrester; the first cable terminal, the first horizontal cylinder, the first three-station combination switch, the current transformer, the horizontal circuit breaker, the second three-station combination switch, the second horizontal cylinder, the voltage transformer, the lightning arrester and the second cable terminal are arranged in a coplanar manner, and interfaces of the first cable terminal and the second cable terminal are not higher than the cylinder bodies which are higher in the first horizontal cylinder and the second horizontal cylinder.

5. The vehicle-mounted combiner of claim 4, wherein at least one of the first and second cable terminations of each combiner unit is oriented vertically downward.

6. A vehicle-mounted combination according to claim 4 or 5, wherein the operating mechanism of the horizontal breaker is located between the horizontal breaker and the one of the voltage transformer and the arrester which is adjacent to the horizontal breaker.

7. A vehicle-mounted combination according to claim 4 or claim 5 wherein the first cable termination is located towards the front of the vehicle body and the second cable termination is located towards the rear of the vehicle body.

8. The vehicle-mounted combined electrical apparatus as claimed in claim 4 or 5, wherein the vehicle body is provided with an adjusting leg for adjusting the levelness of the vehicle body.

9. The vehicle-mounted combined electrical apparatus as claimed in claim 4 or 5, wherein the vehicle body is provided with a bracket for supporting the horizontal type circuit breaker, and one of the voltage transformer and the arrester, which is smaller in size in the up-down direction, is disposed adjacent to the horizontal type circuit breaker and is fixedly mounted on the bracket so that the upper ends of the voltage transformer and the arrester are equal in height.

10. Portable transformer substation, characterized by includes:

a first on-board high voltage switch module being the vehicle mounted combination of any of claims 4-9;

the vehicle-mounted high-voltage power transformation module comprises a vehicle body and a transformer installed on the vehicle body;

the second vehicle-mounted high-voltage switch module comprises a vehicle body and a second combined electrical appliance installed on the vehicle body, and the voltage level of the second vehicle-mounted high-voltage switch module is lower than that of the first vehicle-mounted high-voltage switch module;

the vehicle-mounted control module comprises a vehicle body, and a medium-voltage power distribution module and a secondary module which are installed on the vehicle body.

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