CN106711824A - Vehicle-mounted complete equipment with transformer and GIS direct connection - Google Patents

Abstract

The invention provides a complete set of equipment suitable for direct connection between a vehicle-mounted transformer and a GIS. The complete set of equipment includes a transformer body and a GIS body, and the transformer body and the GIS body are respectively detachably installed on both sides of the vehicle board of the same vehicle; It is a new type of electrical complete set that directly connects the GIS body and the transformer through a compact oil-gas bushing and a plug-in cable terminal to realize the compactness and full enclosure of electrical equipment. The complete set of device of the present invention is applied to the vehicle-mounted mobile substation, which not only fully meets the needs of the vehicle, but also effectively reduces the impact on the surrounding environment when the mobile substation is put into operation at any time due to its compact design, and improves the application of the mobile substation in unconventional occasions. At the same time, it greatly reduces the weight and floor space of electrical equipment, improves the on-site response speed of mobile substations, and meets the actual needs of the passability of most roads in mountainous areas and cities in China.

Description

A complete set of equipment suitable for direct connection between vehicle-mounted transformers and GIS

technical field

The invention relates to the field of complete sets of distribution station devices, in particular to a complete set of devices suitable for direct connection between vehicle-mounted transformers and GIS.

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 complete device 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. In our country, for a long time, due to the limitation of domestic management system and management concept, domestic research on this technology started relatively late. In the past two years, some domestic manufacturers have designed and manufactured 110kV mobile substations for domestic use, but these mobile substations are faced with the fact that the layout of the internal 110kV combined electrical appliances and 110kV transformers on the same vehicle is too large, which cannot meet the domestic requirements. The passability of most roads in mountainous areas and cities. At present, the conventional solution to the above problems is to arrange the 110kV combined electrical appliances and 110kV transformers on each vehicle, but this method will increase the number of vehicles used in the complete set of equipment, and the one-, The connection of various secondary cables is more cumbersome, which affects the on-site response speed of the mobile substation.

Contents of the invention

In view of this, the present invention provides a complete set of equipment suitable for direct connection between vehicle-mounted transformers and GIS. The impact of the environment improves the safety and reliability of mobile substations in unconventional applications, and at the same time greatly reduces the weight and footprint of electrical equipment, improves the on-site response speed of mobile substations, and meets the needs of most roads in mountainous areas and cities in China. Pass the practical needs of sex.

The purpose of the present invention is achieved through the following technical solutions:

A complete set of equipment suitable for direct connection between a vehicle-mounted transformer and GIS, the complete set of equipment includes a transformer body and a GIS body; the transformer body is a 110kV distribution transformer with a vertically placed oil tank as the main body, and the GIS body is 110kV power distribution GIS combination appliance with circuit breaker as the main body;

The transformer body and the GIS body are respectively detachably installed on both sides of the same vehicle's vehicle board;

The transformer body and the GIS body are connected by a compact connection assembly.

Preferably, the GIS body includes a circuit breaker placed vertically away from the transformer body, a connecting piece arranged on the upper side of the circuit breaker close to the transformer, a connecting piece arranged on the side of the circuit breaker close to the transformer A switch box at the lower part of one side and a compact device box arranged on the side wall of the connector;

The switch box is provided with three-phase guide rods arranged in the shape of a square;

The compact connecting assembly is connected to the circuit breaker by the connecting piece arranged coaxially therewith;

The compact device box is provided with a voltage transformer, a current transformer and a lightning arrester.

Preferably, the top of the transformer body is provided with a flat cylindrical oil conservator; the bottom of the oil tank in the transformer body is detachably connected to the vehicle panel; the outer wall of the oil tank is made of aluminum alloy.

Preferably, the transformer body is detachably connected to the vehicle panel through the bottom of the oil tank; the GIS body is detachably connected to the vehicle panel through the bottom of the circuit breaker;

Anti-vibration rubber pads are provided between the bottom of the fuel tank and the vehicle panel, and between the bottom of the circuit breaker and the vehicle panel.

Preferably, the compact connection assembly includes transformer bushing connecting pipes, oil and gas bushings and GIS bushing connecting cylinders connected coaxially in sequence;

The fixed end of the transformer bushing connecting pipe is arranged on the side wall of the transformer body, and the fixed end of the GIS bushing connecting tube is arranged on the side wall of the GIS body;

One end of the oil and gas bushing extends into the transformer bushing connecting pipe coaxially arranged with it, and is connected to the conductor in the transformer body; the other end of the oil and gas bushing extends into the GIS coaxially arranged with it. The bushing is connected to the conductor in the body of the GIS in the connecting cylinder;

The connecting end of the transformer bushing connecting pipe is detachably connected to the connecting end of the GIS bushing connecting barrel at the center of the axis of the oil and gas bushing.

Preferably, there are two oil and gas casings, and they are of double-flange structure;

The connecting end of the transformer bushing connecting pipe and the connecting end of the GIS bushing connecting cylinder are both flange-connected to the two oil-gas bushings at the axial centers of the two oil-gas bushings.

Preferably, a metal bellows is coaxially provided between the connecting end of the transformer bushing connecting pipe and the connecting end of the GIS bushing connecting barrel;

The transformer bushing connecting pipe, the metal bellows and the GIS bushing connecting barrel are sequentially connected by bolts.

Preferably, the GIS casing connection cylinder is connected to the connection piece on the GIS body by a GIS connection joint arranged coaxially therewith.

Preferably, both the inside of the transformer body and the transformer bushing connecting pipe are filled with transformer oil;

The insides of the GIS body, the GIS casing connecting cylinder and the GIS connecting junction are all filled with SF6 gas.

Preferably, the outer wall of the metal bellows is provided with a protective cover; the connection between the transformer bushing connecting pipe and the GIS bushing connecting cylinder is provided with a connecting cylinder bracket.

It can be seen from the above technical solutions that the present invention provides a complete set of equipment suitable for direct connection between a vehicle-mounted transformer and GIS. The two sides of the car board; a new type of electrical complete set that directly connects the GIS body and the transformer through a compact oil-gas bushing and a plug-in cable terminal to realize the compactness and full enclosure of electrical equipment. The complete set of device of the present invention is applied to the vehicle-mounted mobile substation, which not only fully meets the needs of the vehicle, but also effectively reduces the impact on the surrounding environment when the mobile substation is put into operation at any time due to its compact design, and improves the application of the mobile substation in unconventional occasions. At the same time, it greatly reduces the weight and floor area of electrical equipment, improves the on-site response speed of the mobile substation, and meets the actual needs of the passability of most roads in mountainous areas and cities in China.

Compared with the closest prior art, the technical solution provided by the present invention has the following excellent effects:

1. In the technical solution provided by the present invention, the electrical complete set provided by the present invention not only fully satisfies the vehicle-mounted equipment, but also enables the GIS body and the transformer to be directly connected through a compact oil-gas bushing and a plug-in cable terminal to realize a complete set of devices A new type of compact and fully enclosed electrical complete set, which is suitable for most bulletin-type low-bed semi-trailers on the market.

2. The technical solution provided by the present invention, the electrical complete set provided by the present invention effectively overcomes the problem that the 110kV GIS body and the 110kV transformer are arranged separately on the same vehicle, which is too large in size and cannot meet the passability of most roads in mountainous areas and cities in China The downside of the problem. It greatly reduces the weight and floor space of the electrical equipment, improves the on-site response speed of the complete set of equipment, and meets the actual needs of the passability of most roads in mountainous areas and cities in China.

3. The technical solution provided by the present invention, the electrical complete set provided by the present invention realizes the sealing of high voltage in the electrical equipment, which effectively reduces the impact on the surrounding environment when the mobile substation is put into operation at any time, and improves the operation of the mobile substation in unconventional applications. Safety and reliability in occasional application.

4. The technical solution provided by the present invention includes a transformer body and a GIS body through a complete set of devices, and the transformer body and the GIS body are respectively detachably installed on both sides of the same vehicle's vehicle board; the GIS body and the transformer are passed through a compact The direct connection of oil and gas bushings and plug-in cable terminals realize the compact and fully enclosed configuration of electrical equipment. The complete set of devices not only fully meets the needs of the vehicle, but also effectively reduces the impact on the surrounding environment when the mobile substation is put into operation at any time due to its compact design, improves the safety and reliability of the mobile substation when it is used in unconventional occasions, and greatly reduces It reduces the weight and floor area of electrical equipment, improves the on-site response speed of the mobile substation, and meets the actual needs of the passability of most roads in mountainous areas and cities in China.

5. In the technical solution provided by the present invention, the bellows is equipped with a protective device outside, which can protect the weak parts of the bellows and avoid damage due to external forces. The GIS body is detachably connected to the connecting end of the oil and gas casing. It can be disconnected during transportation, that is, the GIS body and the transformer are separated, and the expansion joints are restored before field operation; avoiding the mutual influence of vibration during transportation.

6. In the technical solution provided by the present invention, a connecting tube bracket is provided at the connection between the transformer bushing connecting tube and the GIS bushing connecting tube to realize rigid connection with the bracket designed for the main transformer; it can prevent the connecting tube from being damaged due to transportation or The operating vibration causes the oil and gas casing to be stressed, which improves the reliability of the complete set of equipment.

7. The technical solution provided by the present invention is widely used and has significant social and economic benefits.

Description of drawings

Fig. 1 is a kind of structural representation of the complete set that is applicable to the direct connection of vehicle-mounted transformer and GIS of the present invention;

Fig. 2 is the structural representation of the GIS body in the complete set of the present invention;

Fig. 3 is the top view of the GIS body in the complete set of the present invention;

Fig. 4 is a schematic structural view of the transformer body in the complete set of the present invention.

1-Transformer body, 101-Oil tank, 102-Oil conservator, 103-Transformer bushing connecting pipe, 2-GIS body, 201-GIS bushing connecting barrel, 202-GIS connecting knot, 203-Connector, 204-Circuit breaker , 205-switch box, 206-compact device box, 3-vehicle plate, 4-bolt, 5-shockproof rubber pad, 6-metal bellows, 7-connecting tube bracket, 8-oil and gas casing.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

As shown in Figure 1, the present invention provides a complete set of equipment suitable for direct connection between a vehicle-mounted transformer and GIS, including a transformer body 1 and a GIS body 2; the transformer body 1 is a 110kV power distribution system with a vertical oil tank 101 as the main Transformer, GIS body 2 is a 110kV power distribution GIS combination appliance with circuit breaker 204 as the main body;

The transformer body 1 and the GIS body 2 are respectively detachably installed on both sides of the vehicle board 3 of the same vehicle; the transformer body 1 and the GIS body 2 are connected by a compact connection assembly.

Among them, the compact connection assembly includes the transformer bushing connecting pipe 103, the oil and gas bushing 8 and the GIS bushing connecting cylinder 201 connected coaxially in sequence;

The fixed end of the transformer bushing connecting pipe 103 is set on the side wall of the transformer body 1, and the fixed end of the GIS bushing connecting tube 201 is set on the side wall of the GIS body 2;

One end of the oil-gas bushing 8 extends into the transformer bushing connecting pipe 103 coaxially arranged with it, and is connected with the conductor in the transformer body 1; the other end of the oil-gas bushing 8 extends into the GIS bushing connecting cylinder 201 coaxially arranged therewith. Inside, connected to the conductor in the GIS body 2; the metal bellows 6 plays the role of adjustment and protection during the installation of the transformer bushing connection cylinder and the oil and gas bushing 8, that is, to control the dimensional error during the installation and to absorb the conduction during the transportation. coming kinetic energy;

The connecting end of the transformer bushing connecting pipe 103 and the connecting end of the GIS bushing connecting cylinder 201 are detachably connected at the axial center of the oil and gas bushing 8. In this embodiment, the detachable connection is realized by an expansion joint. The expansion joint can be opened, that is, the combined electrical appliance and the transformer are separated, so as to avoid the mutual influence of vibration during transportation, and the expansion joint can be restored to the connection before the on-site operation.

There are 2 oil and gas casings 8, and they are of double-flange structure;

The connecting end of the transformer bushing 3 connecting pipe 103 and the connecting end of the GIS bushing connecting cylinder 201 are flange-connected to the three oil-gas bushings 8 at the axial centers of the three oil-gas bushings 8 .

A metal bellows 6 is arranged coaxially between the connecting end of the transformer bushing connecting pipe 103 and the connecting end of the GIS bushing connecting cylinder 201;

The transformer bushing connecting pipe 103 , the metal bellows 6 and the GIS bushing connecting cylinder 201 are sequentially connected by bolts 4 .

The GIS casing connection cylinder 201 is connected to the GIS body 2 by a GIS connection node 202 arranged coaxially therewith.

Wherein, both the inside of the transformer body 1 and the transformer bushing connecting pipe 103 are filled with transformer oil;

The insides of the GIS body 2 , the GIS casing connecting cylinder 201 and the GIS connecting junction 202 are all filled with SF6 gas.

As shown in Figures 2 and 3, the GIS body 2 includes a circuit breaker 204 placed vertically away from the transformer body 1, a connecting piece 203 arranged on the upper part of the circuit breaker 204 near the transformer side, and a connecting piece 203 arranged on the upper side of the circuit breaker 204 near the transformer. The switch box 205 at the lower side, the compact device box 206 and the GIS combined electrical control cabinet arranged on the side wall of the connector 203; the line end of the GIS body 2 is prefabricated with a cable cabin, which can be installed with 110kV plug-in cable terminals;

The switch box 205 is provided with three-phase guide rods arranged in the shape of a character;

The GIS connecting node 202 is connected to the circuit breaker 204 with a coaxially arranged connecting piece 203;

The compact device box 206 houses voltage transformers, current transformers and lightning arresters.

As shown in Figure 4, the top of the transformer body 1 is provided with a flat cylindrical oil conservator 102; the oil tank 101 in the transformer body 1 is placed vertically and is detachably connected with the vehicle panel 3; the outer wall of the oil tank 101 is aluminum alloy, the transformer The oil tank 101 is made of aluminum alloy instead of the original steel material. The technical scheme of adjusting the copper-iron ratio of the body and taking the minimum weight of copper and iron can effectively reduce the overall weight of the transformer and realize the main The compactness and lightness of the transformer; the transformer body 1 also includes a secondary control box.

The transformer body 1 is detachably connected to the vehicle panel 3 through the bottom of the oil tank 101 with bolts 4; the GIS body 2 is detachably connected to the vehicle panel 3 through the bottom of the circuit breaker 204 with bolts 4; the outlet position of the high voltage side of the transformer is the narrow axis of the transformer On the surface, the three phases are arranged in a zigzag shape, and the low-voltage side of the transformer adopts a plug-in cable terminal to go out;

Between the bottom of the fuel tank 101 and the vehicle plate 3, and between the bottom of the circuit breaker 204 and the vehicle plate 3, anti-vibration rubber pads 5 are provided, which solves the problem that the transformer needs to be frequently transported to cause vibration.

The outer wall of the metal bellows 6 is provided with a protective cover, which can protect the weak parts of the bellows and avoid damage due to external forces; in order to prevent the oil and gas bushing 8 from being stressed due to transportation or operating vibration of the connecting cylinder, the transformer sleeve A connecting tube bracket 7 is provided at the joint between the tube connecting tube 103 and the GIS casing connecting tube 201 .

The overall overall dimensions (length*width*height) of the complete device in this embodiment are 9048*2920*3150 mm, and the overall weight is 35 tons, which is suitable for most bulletin-type low-bed semi-trailers on the market.

Description of the device:

1. GIS body 2: It is an outdoor closed combined electrical appliance of gas insulated switchgear (GIS), which includes primary main equipment, secondary intelligent equipment, process processing and communication interface equipment.

2. Lightning arrester: It is an electrical device that can release lightning or overvoltage energy in the operation of the power system, protect electrical equipment from instantaneous overvoltage hazards, and cut off the freewheeling current so as not to cause a short circuit to the system ground.

3. Transformer: A transformer that provides the required level of power for the system.

The use and installation process of this complete set of equipment is as follows:

1. After the installation of each equipment of the electrical complete set is completed, the installation, test and debugging work shall be carried out in the factory;

2. After the factory test of the transformer body 1, all the oil inside the oil tank 101 must be released first.

3. After arriving at the site, assemble according to the position in Figure 1, and first connect the transformer body 1 with the equipment base plate 3;

4. First connect the transformer bushing connecting pipe 103 to the broken flange of the oil and gas bushing 8, and then connect the transformer bushing connecting pipe 103 to the transformer body 1;

5. The inner conductor of the transformer body 1 is connected to the oil-gas bushing 8, and after the completion, the transformer body 1 is filled with oil and left standing;

6. After the GIS body 2 is transported to the site, remove the GIS connection junction 202, connect the oil and gas casing 8 to the GIS casing connection cylinder 201, and then connect the GIS casing connection cylinder 201 to the conductor of the oil and gas casing 8 , and then reinstall the GIS connection junction 202, after completion, the GIS body 2 is filled with SF6 gas and left still;

7. Connect the transformer bushing connecting pipe 103 with the GIS bushing connecting cylinder 201, and then connect with the connecting cylinder bracket 7;

8. The whole GIS body 2 and the equipment base plate 3 are connected by bolts 4 through on-site drilling;

9. Overall test to ensure reliable and safe installation of the device.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still modify or equivalently replace the specific embodiments of the present invention. , and any modifications or equivalent replacements that do not deviate from the spirit and scope of the present invention are all within the protection scope of the claims of the pending application of the present invention.

Claims (10)

1. a kind of suitable for vehicle-mounted transformer and GIS direct-connected complexes, the complexes include transformer sheet Body and GIS bodies；The transformer body is based on the 110kV distribution transformers of the vertical fuel tank placed, institute It is the 110kV Distributing Network GIS combined electrical apparatuses based on breaker to state GIS bodies；

Characterized in that, the transformer body and the GIS bodies are removably mounted to the same sweep of car respectively On both sides；

The transformer body and the GIS bodies are connected with compact coupling assembly.

2. complexes as claimed in claim 1, it is characterised in that the GIS bodies are included away from the transformation Device body and vertically place breaker, be arranged on the breaker the upper lateral part of close described transformer one connector, It is arranged on the switch-box of the side lower part of close described transformer one of the breaker and is arranged on the wall of the connector side Compact device case；

The three-phase guide rod arranged in isosceles triangle is provided with the switch-box；

The compact coupling assembly is connected with the connector for being coaxial therewith setting with the breaker；

Voltage transformer, current transformer and arrester are provided with the compact device case.

3. complexes as claimed in claim 2, it is characterised in that the top of the transformer body is provided with flat The conservator of tubular；The bottom of the fuel tank in the transformer body and the sweep detachable connection；The fuel tank Outer wall be aluminium alloy.

4. complexes as claimed in claim 3, it is characterised in that the transformer body is by the fuel tank Bottom and sweep bolt detachable connection；Bottom and the sweep of the GIS bodies by the breaker Use bolt detachable connection；

Shockproof glue is equipped between the bottom of the fuel tank and the sweep, between the bottom of the breaker and the sweep Pad.

5. complexes as claimed in claim 2, it is characterised in that the compact coupling assembly include it is coaxial according to The bushing shell for transformer connecting tube of secondary connection, oil-gas casing and GIS sleeve pipe connections cylinder；

The fixing end of the bushing shell for transformer connecting tube is arranged on the side wall of the transformer body, and the GIS sleeve pipes connect The fixing end for connecing cylinder is arranged on the side wall of the GIS bodies；

Stretch into the bushing shell for transformer connecting tube for being coaxial therewith setting and the transformer one end of the oil-gas casing Conductor connection in body；The other end of the oil-gas casing stretches into the GIS sleeve pipe connections cylinder for being coaxial therewith setting Conductor connection in the interior and GIS bodies；

The connection end of the connection end of the bushing shell for transformer connecting tube and the GIS sleeve pipe connections cylinder is in the oil-gas casing Axle center detachable connection.

6. complexes as claimed in claim 5, it is characterised in that

The oil-gas casing has 3 and is double flange arrangements；

The connection end of the connection end of the bushing shell for transformer connecting tube and the GIS sleeve pipe connections cylinder is in 3 oil gas The axle center of sleeve pipe is connected with 3 oil-gas casing flanges.

7. complexes as described in claim 5 or 6, it is characterised in that the company of the bushing shell for transformer connecting tube Metal bellows is coaxially provided between the connection end for connecing end and GIS sleeve pipe connections cylinder；

The bushing shell for transformer connecting tube, the metal bellows are sequentially connected with GIS sleeve pipe connections cylinder with bolt.

8. complexes as claimed in claim 6, it is characterised in that the GIS sleeve pipe connections cylinder is with being coaxial therewith The GIS connection knots of setting are connected with the connector on the GIS bodies.

9. complexes as claimed in claim 8, it is characterised in that

The inside of the transformer body and the bushing shell for transformer connecting tube fills transformer oil；

The inside of the GIS bodies, GIS sleeve pipe connections cylinder and GIS connection knots is filled with SF6 gases.

10. complexes as claimed in claim 7, it is characterised in that the outer wall of the metal bellows is provided with protection Cover；The bushing shell for transformer connecting tube is provided with the junction of GIS sleeve pipe connections cylinder and is connected tube stent.