CN203734139U - Medium voltage power distribution vehicle - Google Patents

Abstract

The utility model provides a medium voltage power distribution vehicle. The improvements are that the vehicle comprises a vehicle head, a semi-mounted trailer (18), electric support legs (20), cable capstan boxes (17) and a distribution box body. The vertical section of the semi-mounted trailer (18) is a one-grade stepped shape. The upper step and the lower step of the trapezoid are respectively provided with cable capstan boxes (17). The other side of the lower step of the distribution box body is uniformly provided with the electric support legs (20) and vehicle wheels. The medium voltage power distribution vehicle can fully meet the requirements of national road transport regulations, be well suitable for national electric power management system, and be applied to short time capacity increases and transformer station temporary unkeep substitution.

Description

A medium voltage distribution car

technical field

The utility model relates to a medium-voltage power distribution vehicle, in particular to a vehicle-mounted mobile medium-voltage power distribution vehicle.

Background technique

For a long time, my country has been adapting to the growth of power demand with continuously optimized service methods and a strong grid structure. However, the irregularity of power demand changes, the destruction of power facilities caused by natural disasters or human factors, and the necessary power outages in the process of power grid construction and transformation still affect the reliability of power supply to a certain extent. In order to solve the above problems, the temporary power supply contradiction is solved by establishing a temporary power supply, that is, a temporary mobile substation is built to quickly make up for regional and time-period power supply shortages without occupying actual land resources. Therefore, mobile substations are widely used in short-term capacity expansion, temporary substation construction, maintenance and replacement, and disaster emergency response. In recent years, mobile substations have been paid more and more attention to and applied in power supply systems in North America and Europe. Known foreign companies that are in a leading position in this field are currently able to design and manufacture vehicle-mounted mobile substations with a maximum voltage level of 245kV and a maximum capacity of 75MVA. In my country, for a long time, due to the limitations of the domestic management system, management concept, and road transportation conditions, the research and application of this technology has not yet been carried out in China. Therefore, the utility model provides a new vehicle-mounted mobile medium-voltage power distribution vehicle that fully meets the domestic road transportation regulations and can well adapt to the domestic power system management system. It can be used as a module in a required substation.

Contents of the invention

The purpose of this utility model is to provide a vehicle-mounted mobile medium-voltage distribution vehicle that fully meets the domestic road transportation regulations and can well adapt to the domestic power system management system, and can be applied to short-term capacity increase, substation temporary maintenance and replacement, etc. .

The technical solution of the utility model is:

A medium-voltage power distribution car, characterized in that: the power distribution car includes a front, a semi-trailer trailer (18), an electric outrigger (20), a cable winch box (17) and a power distribution box; the semi-trailer The longitudinal section of the trailer (18) is in the shape of a first step; the upper and lower steps of the trapezoid are respectively equipped with the cable winch box (17) and the other side of the lower step of the distribution box is evenly equipped with electric motors. Outriggers (20) and wheels.

Among them, the power distribution box includes a medium voltage switchgear (15), a low voltage screen cabinet (16), a terminal box (19) and a through-type arcing pressure relief channel; the medium voltage switchgear (15) and the secondary screen cabinet (16) are placed together in the distribution box; the medium-voltage switchgear (15) is located in the front of the box, and the low-voltage screen cabinet (16) and the terminal box (19) are located in the box rear of the body.

Among them, the terminal box (19) is arranged on the side of the semi-trailer (18); the incoming line of the medium-voltage switchgear (15) is connected to the low-voltage end of the main transformer (9) through a flexible cable; the medium-voltage The outgoing line of switchgear (15) is drawn out by flexible cable.

Wherein, the electric outrigger (20) is divided into two modes of operation, electric and manual; the electric outrigger (20) is equipped with a computer automatic leveling system.

Wherein, the cable winch (17) is divided into electric and manual two kinds of retractable modes.

Wherein, the terminal box (19) is provided with access ports matching with each communication interface panel component.

Among them, the switchgear (15) is a fixed switchgear, which is also used as a medium-voltage switch in the distribution box; a through-type arcing pressure relief channel is used between the cabinets, and a hinged pressure relief door is used on the medium-voltage distribution box. ; Equipment inspection and maintenance doors and emergency escape doors shall be set up in the medium voltage room.

Among them, the primary and secondary cables are connected through the bottom of the cabinet; the medium-voltage room and the low-voltage room are separated by partitions.

Compared with the prior art, the utility model has the following advantages:

The overall dimensions and weight of the new vehicle-mounted mobile medium-voltage power distribution vehicle provided by the utility model meet the relevant regulations on road traffic in my country. The length is less than 13 meters, the width is less than 3 meters, the height is less than 4.3 meters, and the weight is less than or equal to 30 tons. Complicated road conditions in most areas. The new vehicle-mounted mobile medium-voltage power distribution vehicle is composed of a medium-voltage power distribution box and a cable winch box, which can better meet the operation and management requirements of my country's power system. The utility model effectively overcomes the shortcomings that the transportation conditions of foreign vehicle-mounted mobile substations do not meet the road traffic regulations of our country and the requirements of the operation and management of our electric power system.

Description of drawings

Figure 1 is a vehicle-mounted mobile medium-voltage power distribution vehicle of the present invention—front view

Figure 2 is a vehicle-mounted mobile medium-voltage power distribution vehicle of the present invention - a top view

Figure 3 is a reference diagram for the on-site operation of the new vehicle-mounted mobile substation

Fig. 4 is the main transformer car of the vehicle-mounted mobile substation provided based on the implementation of the utility model—front view

Figure 5 is a top view of the main transformer car of the vehicle-mounted mobile substation provided based on the implementation of the utility model

Fig. 6 is a high-voltage combined electrical vehicle of a vehicle-mounted mobile substation provided based on the implementation of the utility model—front view

Fig. 7 is a high-voltage combined electrical vehicle of a vehicle-mounted mobile substation provided by the implementation of the utility model—a top view

Among them: medium-voltage power distribution vehicle 1, high-voltage combined electrical vehicle 2, main transformer vehicle 3, high-voltage combined electrical equipment 4, lightning arrester 5, trailer 6, terminal box 7, mechanical outrigger 8, main transformer 9, neutral point complete set Protection device 10, comprehensive control room 11, terminal box 12, semi-trailer and headstock 13, electric outrigger 14, medium voltage switchgear 15, secondary screen cabinet 16, cable winch 17, semi-trailer 18, terminal box 19, Electric outriggers 20

Detailed ways

In order to make the above purpose, features and advantages of the present utility model more obvious and understandable, the specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, Figures 1 to 2 are the planar views of the vehicle-mounted mobile medium-voltage power distribution vehicle based on the utility model and the planar views of its operation in the mobile substation.

The utility model provides a new type of vehicle-mounted mobile medium-voltage power distribution vehicle. The power distribution vehicle includes a front, a semi-trailer (18), an electric outrigger (20), a cable winch box (17) and a power distribution box; the semi-trailer The front end of the trailer (18) is connected to the front of the vehicle, and wheels are provided at the rear; electric outriggers (20) are evenly provided under the semi-trailer (18); Cable winch box (17); the rear upper part is provided with the described power distribution box.

The medium-voltage power distribution vehicle 1 includes a medium-voltage switch cabinet 15 , a secondary screen cabinet 16 , a cable winch 17 , a semi-trailer 18 , a headstock, a terminal box 19 and electric outriggers 20 . The cable winch 17 is arranged at the front of the semi-trailer 18, the medium voltage switchgear 15 and the secondary screen cabinet 16 are arranged in the same cabin, the medium voltage switchgear 15 is located at the front of the cabin, and the secondary screen cabinet 16 is located in the cabin. rear of the body. The terminal box 19 is arranged on the side of the semi-trailer 18 . The incoming line of the medium-voltage switchgear 15 can be connected with the low-voltage end of the main transformer 9 through a flexible cable, and the outgoing line of the medium-voltage switchgear 15 can be drawn out through a flexible cable. Electric supporting leg 20 is installed in semi-trailer 18 bottoms.

The power distribution vehicle according to claim 1, characterized in that: the terminal box 19 is arranged on the side of the semi-trailer 18; the incoming line of the medium-voltage switchgear 15 is connected to the low-voltage end of the main transformer 9 through a flexible cable connected; the outgoing line of the medium-voltage switchgear 15 is led out through a flexible cable.

The medium voltage distribution car is equipped with electric outrigger supports, which can also be operated manually in special cases. The electric outrigger is equipped with a computer automatic leveling system, which can realize the function of automatically reaching the level state of the vehicle system.

The cable winch installed on the medium voltage distribution car has both electric and manual retraction functions.

The medium-voltage distribution box adopts the aluminum alloy skin military shelter.

The terminal box is equipped with various communication interface panel components, and the secondary cables and optical cables between the car bodies can be quickly, flexibly and reliably connected on site.

The medium-voltage switch in the medium-voltage distribution box adopts fixed switchgear, and the through-type arcing pressure relief channel is used between the cabinets. The hinged pressure relief door is used on the medium-voltage distribution box; the primary and secondary cables are connected through the bottom of the cabinet. The middle and low voltage rooms are separated by partitions; the medium voltage room is equipped with equipment inspection and maintenance doors and emergency escape doors.

The working process of the utility model vehicle-mounted mobile medium-voltage power distribution vehicle in the mobile substation is as follows:

As shown in Figure 3, this figure is a reference diagram for the on-site operation of the new vehicle-mounted mobile substation.

After the installation of each equipment in the vehicle-mounted mobile substation is completed, the test and debugging work will be carried out in the factory. When it arrives at the site, it can be placed with reference to the running reference position in Figure 2. The transformer is placed on the semi-trailer to form a transformer car 2, the head of the transformer car is connected to the mobile substation, the tail is connected to the high-voltage combined electric car 1, and the other end of the high-voltage combined electric car 1 is connected to the overhead incoming line. The medium-voltage car and the transformer car involved in the utility model are vertically placed and placed outside the mobile substation, and the medium-voltage power distribution car 3 is connected with the main transformer 9 .

After the electric and mechanical outriggers support the car body, it is leveled. After that, the equipment on the car is simply connected and installed, and the grounding grid is laid around it. After the inspection items required by the site are completed, it can be powered on for operation.

Other supporting equipment in the station are as follows:

Figures 4 to 5 are vehicle-mounted mobile substations provided based on the implementation of the utility model. In addition to the medium-voltage distribution vehicle 1, there are also a high-voltage combined electrical vehicle 2 and a main transformer vehicle 3.

As shown in FIG. 4 , the main transformer car 3 includes a main transformer 9 , a complete set of neutral point protection devices 10 , a comprehensive control room 11 , a terminal box 12 , a semi-trailer and a headstock 13 and electric legs 14 . The comprehensive control room 11 is arranged in the front of the semi-trailer 13 , the main transformer 9 and the complete neutral point protection device 10 are arranged in the rear of the semi-trailer 13 , and the terminal box 12 is arranged in the side of the semi-trailer 13 . The high-voltage end of the main transformer 9 can be connected with the high-voltage combined electric device 4 on the high-voltage combined electric car 1 through an annealed copper wire. The low-voltage end of the main transformer 9 can be connected with the medium-voltage distribution vehicle 3 through a flexible cable. The electric supporting leg 14 is arranged at the bottom of the semi-trailer 13 .

As shown in FIG. 5 , the high-voltage combined electrical vehicle 2 includes a high-voltage combined electrical device 4 , a lightning arrester 5 , a trailer 6 , a terminal box 7 and mechanical legs 8 . The high-voltage combined electrical apparatus 4 is fixedly installed on the front of the trailer 6 through bolts, the arrester 5 is fixedly installed on the rear of the trailer 6 through the arrester bracket, and the terminal box 7 is arranged on the side of the trailer 6. The high-voltage combination The electric appliance 4 is connected with the lightning arrester 5 through an annealed copper wire. Mechanical supporting leg 8 is installed in trailer 6 bottoms.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: it is still possible Any modification or equivalent replacement made to the specific implementation of the present utility model without departing from the spirit and scope of the present utility model shall be covered by the claims of the present utility model.

Claims (8)

1. a medium-voltage distribution car, is characterized in that: described distribution trolley comprises headstock, semi-trailer (18), electronic supporting leg (20), cable hoist case (17) and distributing box; Described semi-trailer (18) vertical section is one-level stairstepping; Described trapezoidal topping bar and get out of a predicament or an embarrassing situation is respectively equipped with the opposite side of getting out of a predicament or an embarrassing situation described in described cable hoist case (17) and described distributing box and is evenly provided with electronic supporting leg (20) and wheel.

2. medium-voltage distribution car according to claim 1, is characterized in that: described distributing box comprises Medium Voltage Switchgear (15), low voltage screen cabinet (16), terminal box (19) and through arcing pressure release passage; Described Medium Voltage Switchgear (15) and secondary screen cabinet (16) are placed in distributing box jointly; Described Medium Voltage Switchgear (15) is positioned at the front portion of described casing, and described low voltage screen cabinet (16) and described terminal box (19) are positioned at described casing rear portion.

3. medium-voltage distribution car according to claim 2, is characterized in that: described terminal box (19) is arranged in the sidepiece of semi-trailer (18); The inlet wire of described Medium Voltage Switchgear (15) is connected with the low-pressure end of main transformer (9) by flexible cable; The outlet of described Medium Voltage Switchgear (15) is drawn by flexible cable.

4. medium-voltage distribution car according to claim 1, is characterized in that described electronic supporting leg (20) is divided into electronic and artificial two kinds of modes of operation.

5. medium-voltage distribution car according to claim 1, is characterized in that described cable hoist (17) is divided into electronic and artificial two kinds of folding and unfolding modes.

6. medium-voltage distribution car according to claim 2, is characterized in that described terminal box (19) is provided with the access interface matching with each communication interface panel component.

7. medium-voltage distribution car according to claim 2, is characterized in that: described Medium Voltage Switchgear (15) is fixed switching cabinet, simultaneously as the Medium voltage switch or circuit breaker in described distributing box; Between cabinet, adopt through arcing pressure release passage, on medium-voltage distribution casing, adopt hinge type pressure port; Middle pressure chamber is set up equipment repair and maintenance door, emergency escape door.

8. medium-voltage distribution car according to claim 7, is characterized in that: first and second cable goes out through connection under adopting cabinet; Described middle pressure chamber and low-pressure chamber arrange dividing plate isolation.