CN108879454B - Combined electric vehicle and combined switch - Google Patents

Abstract

The invention relates to a combined electric vehicle and a combined switch. The combination electric vehicle includes a mobile trolley and a combination switch installed on the mobile trolley. The combination switch includes terminals located at the front and rear ends, a circuit breaker is arranged between the two terminals, and three work stations are respectively provided on the front and rear sides of the circuit breaker. An isolation grounding switch, the combination switch further includes a voltage transformer and a surge arrester, at least one of the voltage transformer and the surge arrester is in the same front and rear position as one of the three-position isolation grounding switches. By arranging the arrester and the voltage transformer in the same front and rear positions of the three-station isolation grounding switch, the arrester and the voltage transformer use the space in the width direction of the mobile trolley to share the front and rear space with the three-station isolation grounding switch, reducing the front and rear of the combination switch. The size makes the structure of the whole combination switch more compact, which is convenient for the transportation of the combination switch.

Description

A combination electric vehicle and combination switch

technical field

The invention relates to a combined electric vehicle and a combined switch.

Background technique

With the rapid development of the domestic economy, the dependence on electricity is getting higher and higher, and the requirements for the reliability of power supply are also increasing. In order to cope with various problems in the power supply process, mobile substations emerge as the times require. When the power consumption peaks at times, the mobile substation can be quickly transported to the site, and it can be put into use after being connected to the power grid to increase the power supply; when a natural disaster occurs and the original substation fails, the mobile substation can be quickly transported to the site. Put into use instead of faulty substations, thereby shortening the power outage time of abnormal accidents, restoring power supply quickly when natural disasters occur, providing power support for disaster prevention and mitigation, and reducing losses.

The structure of the mobile substation generally includes a trailer, and the trailer is provided with a transformer and a combined electrical appliance. Among them, the combined electrical appliance generally includes a circuit breaker, an isolating grounding switch, a current transformer, a voltage transformer, and a surge arrester. Each structure is along the length of the vehicle. interval setting. However, in the actual use of the substation of this structure type, due to the need for a certain insulation distance between the components in the combined electrical appliance, the entire combined electrical appliance needs to occupy a large space in the direction of the vehicle length. The higher the voltage level of the substation, the The larger the space occupied, and the larger the size of the mobile substation, the more inconvenient to transport, which greatly restricts the development of the mobile substation.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a combination switch with compact structure, small volume and convenient transportation; the purpose of the present invention is also to provide a combination electric vehicle using the above combination switch.

In order to achieve the above purpose, the technical scheme of a combination switch of the present invention is: a combination switch, comprising terminals located at the front and rear ends, a circuit breaker is arranged between the two terminals, and a three-way circuit breaker is respectively provided on the front and rear sides of the circuit breaker. A position isolation grounding switch, the combination switch further includes a voltage transformer and a surge arrester, at least one of the voltage transformer and the surge arrester is in the same front and rear position as one of the three-position isolation grounding switches.

By arranging the arrester and voltage transformer at the same front and rear positions of the three-position isolation grounding switch, the arrester and voltage transformer use the space in the width direction of the mobile trolley to share the front and rear space with the isolation grounding switch, reducing the front and rear dimensions of the combination switch, so that the entire The structure of the combination switch is more compact, which is convenient for the transportation of the combination switch.

Both the voltage transformer and the arrester are in the same front and rear positions with the same three-position isolation grounding switch.

The voltage transformer and the arrester are respectively located on the left and right sides of the three-position isolation grounding switch.

The voltage transformer and the arrester are respectively located under the left and right sides of the three-position isolation grounding switch.

One of the two terminals close to the voltage transformer is the cable terminal, and the cable terminal and the voltage transformer are in the same front and rear position.

The voltage transformer, the arrester and the cable terminal are arranged circumferentially around the three-position isolating grounding switch, and the included angle between them is 90°, and the cable terminal is arranged horizontally.

One of the two terminals away from the voltage transformer is also the cable terminal. One of the two cable terminals is located on the left side of the combination switch and the other is located on the right side of the combination switch.

Both terminals are three-phase split-phase bushings.

The three-phase split-phase bushings are arranged vertically.

The three-phase split bushing away from the voltage transformer and the three-position isolation grounding switch away from the voltage transformer are in the same front and rear positions, which makes the structure of the combination switch more compact and further reduces the front and rear dimensions of the combination switch.

The circuit breaker is arranged vertically.

In order to achieve the above purpose, the technical scheme of a combined electric vehicle of the present invention is: a combined electric vehicle, comprising a mobile trolley and a combination switch fixedly arranged on the mobile trolley, the combination switch includes terminals located at the front and rear ends, and the two A circuit breaker is arranged between the terminals, and the front and rear sides of the circuit breaker are also provided with three-position isolation grounding switches. The combined switch also includes a voltage transformer and a surge arrester, at least one of the voltage transformer and the surge arrester and one of the three-way switches. The isolating grounding switches are in the same front and rear positions.

By arranging the arrester and voltage transformer at the same front and rear positions of the three-position isolation grounding switch, the arrester and voltage transformer use the space in the width direction of the mobile trolley to share the front and rear space with the isolation grounding switch, reducing the front and rear dimensions of the combination switch, so that the entire The structure of the combination switch is more compact, which is convenient for the transportation of the combination switch.

Both the voltage transformer and the arrester are in the same front and rear positions with the same three-position isolation grounding switch.

The voltage transformer and the arrester are respectively located on the left and right sides of the three-position isolation grounding switch.

The voltage transformer and the arrester are respectively located under the left and right sides of the three-position isolation grounding switch.

One of the two terminals close to the voltage transformer is the cable terminal, and the cable terminal and the voltage transformer are in the same front and rear position.

The voltage transformer, the arrester and the cable terminal are arranged circumferentially around the three-position isolating grounding switch, and the included angle between them is 90°, and the cable terminal is arranged horizontally.

One of the two terminals away from the voltage transformer is also the cable terminal. One of the two cable terminals is located on the left side of the combination switch and the other is located on the right side of the combination switch.

Both terminals are three-phase split-phase bushings.

The three-phase split-phase bushings are arranged vertically.

The three-phase split bushing away from the voltage transformer and the three-position isolation grounding switch away from the voltage transformer are in the same front and rear positions, which makes the structure of the combination switch more compact and further reduces the front and rear dimensions of the combination switch.

The circuit breaker is arranged vertically.

The ground terminal of the combination switch is connected to the mobile trolley and is grounded through the mobile trolley.

Description of drawings

1 is a front view of the preferred embodiment 1 of a combined electric vehicle of the present invention;

2 is a top view of the preferred embodiment 1 of a combined electric vehicle of the present invention;

3 is a front view of the combination switch in the preferred embodiment 1 of a combined electric vehicle of the present invention;

4 is a top view of the combination switch in the preferred embodiment 1 of a combined electric vehicle of the present invention;

Fig. 5 is the front view of the mobile trolley in the preferred embodiment 1 of a combined electric vehicle of the present invention;

Fig. 6 is the top view of the mobile trolley in the preferred embodiment 1 of a combined electric vehicle of the present invention;

7 is a front view of the combined electric vehicle in the preferred embodiment 1 of the combined electric vehicle of the present invention when it is used;

8 is a top view of the combined electric vehicle in the preferred embodiment 1 of the combined electric vehicle of the present invention when it is used;

Fig. 9 is the wiring diagram of the combination switch in the preferred embodiment 1 of a combined electric vehicle of the present invention;

10 is a front view of the preferred embodiment 2 of a combined electric vehicle of the present invention;

11 is a top view of the preferred embodiment 2 of a combined electric vehicle of the present invention;

12 is a front view of the combination switch in the preferred embodiment 2 of an electric combination vehicle of the present invention;

13 is a top view of the combination switch in the preferred embodiment 2 of an electric combination vehicle of the present invention;

FIG. 14 is a front view of a mobile trolley in the preferred embodiment 2 of a combined electric vehicle according to the present invention;

Fig. 15 is a top view of the mobile trolley in the preferred embodiment 2 of a combined electric vehicle of the present invention;

Fig. 16 is a front view of the combined electric vehicle in the preferred embodiment 2 of the present invention when the combined electric vehicle is in use;

17 is a top view of the combined electric vehicle in the preferred embodiment 2 of the combined electric vehicle of the present invention when it is used;

Fig. 18 is a wiring diagram of the combination switch in the preferred embodiment 2 of a combined electric vehicle of the present invention;

In the picture: 1. Mobile trolley; 2. Circuit breaker; 3. Current transformer; 4. Three-station isolating grounding switch; 5. Voltage transformer; 6. Lightning arrester; 7. GIS control cabinet; 8. Front three-phase Split-phase bushing; 9. Rear three-phase split-phase bushing; 10. Front cable terminal; 11. Rear cable terminal.

Detailed ways

The embodiments of the present invention will be further described below with reference to the accompanying drawings.

Embodiment 1 of the combined electric vehicle of the present invention includes a mobile trolley and a combination switch fixedly arranged on the mobile trolley. The combination switch includes terminals located at the front and rear ends, and a circuit breaker is arranged between the two terminals. The front and rear sides are also provided with three-position isolation grounding switches, the combined switch further includes a voltage transformer and a surge arrester, at least one of the voltage transformer and the surge arrester is in the same front and rear position as one of the three-position isolation grounding switches.

By arranging the arrester and the voltage transformer at the same front and rear positions as the three-station isolation grounding switch, the arrester and the voltage transformer use the space in the width direction of the mobile trolley to share the front and rear space with the three-station isolation grounding switch, reducing the combined switch. The front and rear dimensions make the structure of the entire combination switch more compact and facilitate the transportation of the combination switch.

Wherein, both the voltage transformer and the arrester are placed in the same front and rear positions with the same three-position isolating grounding switch, and the second embodiment is obtained. In other embodiments, one of the voltage transformer and the arrester can be arranged with the circuit breaker front side. The three-position isolating grounding switch is in the same front and rear position, and the other is in the same front and rear position with the three-position isolating grounding switch set on the rear side of the circuit breaker.

When both the voltage transformer and the arrester are in the same front and rear positions with the same three-position isolation grounding switch, the voltage transformer and the arrester can be located on the left and right sides of the three-position isolation grounding switch, respectively, to obtain Embodiment 3. In other embodiments, the voltage transformer and the arrester can be arranged at any position in the circumferential direction of the three-position isolating grounding switch, for example, above, below, left, right, etc. Arrange voltage transformers and arresters at any two positions respectively. Of course, the voltage transformer and the arrester can also be arranged below the left and right sides of the three-position isolation grounding switch, respectively, to obtain Embodiment 4.

When both the voltage transformer and the arrester are in the same front and rear positions with the same three-position isolating grounding switch, one of the two terminals can be set as a cable terminal, and the other terminal can be set as a three-phase split bushing; or , both terminals are set as cable terminals; or, both terminals are set as three-phase split-phase bushings.

In the above arrangement of the terminals, when one of the two terminals is a cable terminal, and the cable terminal is close to the voltage transformer, the cable terminal and the voltage transformer are arranged in the same front and rear positions to obtain Embodiment 5. At this time , the voltage transformer, the arrester and the cable terminal can be arranged circumferentially around the three-position isolation grounding switch, and the included angle between each other is 90°, and the cable terminal is arranged horizontally, and the sixth embodiment is obtained. When the other one of the two terminals is also a cable terminal, one of the cable terminals is set on the left side of the combination switch, and the other is set on the right side of the combination switch, and Example 7 is obtained.

The two terminals are both set as three-phase split-phase bushings to obtain Embodiment 8. At this time, the two three-phase split-phase bushings can be arranged vertically to reduce the lateral size of the combination switch, and Embodiment 9 is obtained, Of course, in other embodiments, the bushings on both sides of the two three-phase split-phase bushings may also be inclined outward to increase the insulation distance. In addition, when both terminals are set as three-phase split-phase bushings, the three-phase split-phase bushing far away from the voltage transformer and the three-position isolation grounding switch far away from the voltage transformer are in the same front and rear positions to further reduce the combined Front and rear dimensions of the switch, Example 10 was obtained.

In all the above embodiments, the circuit breaker is arranged vertically, and the 11th embodiment is obtained.

In all the above embodiments, the ground terminal of the combination switch is connected to the mobile trolley and grounded through the mobile trolley to obtain Embodiment 12. In other embodiments, the ground terminal of the combination switch can be directly grounded.

The above embodiments are relatively concise descriptions of the combined electric vehicle of the present invention. These embodiments can be implemented individually or in combination. The following provides the best implementations of the two combined electric vehicles after the above embodiments are combined.

The preferred embodiment 1 of the combined electric vehicle of the present invention, as shown in FIGS. 1 to 9 , includes a mobile cart 1 and a combination switch fixedly installed on the mobile cart. The combination switch includes terminals located at the front and rear ends, A circuit breaker 2 is arranged between the two terminals, and the front and rear sides of the circuit breaker 2 are also provided with a three-position isolation grounding switch 4. The combination switch also includes a voltage transformer 5 and a surge arrester 6. The voltage transformer 5 and the surge arrester 6 They are all in the same front and rear position as the three-position isolating grounding switch set on the rear side of the circuit breaker 2.

The front and rear three-position isolation grounding switches 4 are respectively connected with the front three-phase split-phase bushing 8 and the rear three-phase split-phase bushing 9 for the incoming and outgoing lines. The front and rear three-phase split-phase bushings are arranged vertically to avoid the increase of the overall width of the combination switch when the bushing is set inclined, which is not conducive to the transportation of the combination switch. In addition, the arrester 6 is located at the lower left of the three-station isolation grounding switch, and the voltage transformer 5 is located at the lower right of the three-station isolation grounding switch. The arrester 6 and the voltage transformer 5 are placed under the two sides of the three-station isolation grounding switch. , can increase the insulation distance between the arrester and the voltage transformer and the bushing, and improve the operation reliability of the combination switch.

In addition, the three-position isolation grounding switch 4 on the front side of the circuit breaker is connected to the lower part of the circuit breaker 2, the front three-phase split-phase bushing 8 is located above the front three-position isolation grounding switch, and the front three-phase split-phase bushing 8 and The front three-position isolation grounding switch shares a section of front and rear space, which makes the structure of the combination switch more compact and further reduces the front and rear dimensions of the combination switch. A current transformer 3 is connected in series between the circuit breaker 2 and the rear three-position isolation grounding switch 4, and the rear three-phase split-phase bushing 9 is connected to the rear end of the rear three-position isolation grounding switch.

A GIS control cabinet 7 is also installed on the mobile trolley 1 .

The specific structure of the mobile trolley is shown in Figures 5 and 6. Figure 6 shows the installation position diagram of the combination switch on the mobile trolley, including the voltage transformer installation area A, the arrester installation area B, the circuit breaker and the current mutual inductance. The installation area C of the three-position isolation grounding switch, the installation area D of the bushing support, and the installation area E of the GIS control cabinet.

In the actual use process of the combined electric vehicle of the present invention, the combined switch is fixed on the mobile trolley according to the above-mentioned installation area, after debugging and testing, the whole is shipped to the site and put into operation. Among them, the overall height of the mobile trolley is 1100mm, the length of the car body is 4500mm, the width is 3000mm, and the overall height of the combination switch is 3400mm. After assembly, the entire combined electric vehicle is 4500mm long, 3000mm wide and 4500mm high, which meets the requirements of road transportation. After the combined electric vehicle is transported into the site, the rear three-phase split-phase bushing is connected to the overhead line, and the front three-phase split-phase bushing is connected to the transformer, and then the operation can be carried out.

The preferred embodiment 2 of the combined electric vehicle of the present invention, as shown in FIGS. 10 to 18 , has basically the same structure as that of the combined electric vehicle in the specific embodiment 1, the difference is that in this embodiment, the combined electric vehicle The switch enters and exits through the front cable terminal 10 and the rear cable terminal 11 connected to the three-position isolation grounding switch 4 on the front and rear sides, wherein the rear cable terminal 11 and the rear three-position isolation grounding switch 4 are located at the same front and rear positions. , and the arrester 6 and the voltage transformer 5 are spaced apart, and the front cable terminal 10 and the front three-position isolation grounding switch 4 are located at the same front and rear positions.

In addition, the three-position isolation and grounding switch 4 on the front side of the circuit breaker 2 is connected to the middle of the circuit breaker 2 , and the front cable terminal 10 is located at the lower left of the front three-position isolation and grounding switch 4 . The rear cable terminal 11 is located at the lower right of the rear three-position isolation and grounding switch 4, the voltage transformer 5 is located above the rear three-position isolation and grounding switch, and the arrester 6 is located at the lower left of the rear three-position isolation and grounding switch.

The specific structure of the mobile trolley 1 is shown in Figures 14 and 15, wherein Figure 15 is the installation distribution diagram of each structure of the combination switch on the mobile trolley, including the circuit breaker, voltage transformer, front and rear three-position isolation grounding switch installation area a, the installation area of the control cabinet b, the cable terminal support area c, and the arrester support area d.

In the actual use process of the combined electric vehicle in this embodiment, the combined switch is also fixed to the mobile trolley according to the above layout in the factory, and then the whole is shipped to the site for operation after debugging and testing. Among them, the overall height of the mobile trolley is 1100mm, the length of the car body is 4000mm, and the width is 3000mm. The overall height of the combination switch is 2600mm. After assembly, the entire combined electric vehicle is 4000mm long, 3000mm wide and 3700mm high, which meets the requirements of road transportation. After the combined electric vehicle is transported to the site, the rear cable terminal is connected to the gantry, and the front cable terminal is connected to the transformer, and then the operation can be carried out.

The specific embodiment of the combination switch of the present invention has the same specific structure as that of the combination switch in the above-mentioned embodiments of the combined electric vehicle, and will not be described in detail here.

Claims (5)

1. a combination electric vehicle, comprising a mobile trolley and a combination switch fixedly arranged on the mobile trolley, it is characterized in that: the combination switch comprises the terminals located at the front and rear ends, a circuit breaker is provided between the two terminals, the circuit breaker There are also three-position isolation grounding switches on the front and rear sides of the switch, and the combined switch also includes a voltage transformer and a surge arrester, both of which are in the same front and rear positions as the same three-position isolation grounding switch. The voltage transformer and the arrester are respectively located under the left and right sides of the three-position isolating grounding switch in the same front and rear positions; both terminals are three-phase split-phase bushings; the three-position isolating grounding switch on the front side of the circuit breaker It is connected to the lower part of the circuit breaker, and the front three-phase split-phase bushing is located above the front three-position isolation grounding switch; a current transformer is connected in series between the circuit breaker and its rear three-position isolation grounding switch, and the rear three-phase split-phase casing The pipe is connected with the rear end of the three-position isolation grounding switch on the rear side; the current transformer is connected with the middle of the circuit breaker. 2 . The combined electric vehicle according to claim 1 , wherein the three-phase split-phase bushings are arranged vertically. 3 . 3 . The combined electric vehicle according to claim 1 , wherein the three-phase split bushing far from the voltage transformer and the three-position isolation grounding switch far from the voltage transformer are in the same front and rear positions. 4 . 4 . The combined electric vehicle according to claim 1 , wherein the circuit breaker is arranged vertically. 5 . 5 . The combined electric vehicle according to claim 1 , wherein the ground terminal of the combination switch is connected to the mobile trolley and is grounded through the mobile trolley. 6 .

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