CN218828688U - High-voltage back-to-back compact water-cooling SVG electrical container - Google Patents

Abstract

The utility model relates to a high-pressure back-to-back compact water-cooling SVG electrical container, which is divided into a high-pressure cabin and a low-pressure cabin by a partition plate, wherein a water-cooling system is arranged in the low-pressure cabin, three power valve groups are arranged in the high-pressure cabin, and each phase is provided with one power valve group; each power valve group is arranged in layers, each layer is provided with a plurality of SVG power units, each layer of SVG power units are arranged back to back in double rows, and inlet and outlet terminal copper bars and inlet and outlet water ports are installed at the front parts of the SVG power units. The advantages are that: has the advantages of compact structure, small occupied area and integral transportation. The SVG power unit on every layer of power valves arranges back-to-back biserial, and the centre need not to leave and maintains the passageway, makes the space utilization of hyperbaric chamber higher, and the structure is compacter, has not only realized single container and has integrated the design, still dwindles the volume of container greatly, and it is little to have solved the engineering place area, and the space requires high difficult problem.

Description

High-voltage back-to-back compact water-cooling SVG electrical container

Technical Field

The utility model belongs to outdoor SVG reactive compensation field especially relates to a high pressure is back-to-back compact water-cooling SVG electrical container.

Background

SVG is a static var generator, also called high-voltage reactive compensator, which is a dynamic reactive compensation device based on a voltage source type converter. SVG has faster response speed; the voltage flicker suppression capability is stronger; the operation range is wider; the compensation function is diversified; the device can provide the functions of power factor, three-phase voltage balance, voltage flicker and voltage fluctuation inhibition, harmonic pollution treatment and the like. Has become a main application device in the field of reactive compensation. SVG complete sets have obtained extensive application in large-scale wind-powered electricity generation field, photovoltaic power plant etc.. With the rapid development of new energy power generation in recent years, land resources are increasingly tense, the construction cost gradually rises, and more customers select box type water-cooled SVG. The box type water-cooling SVG integrates a power valve group system, a water-cooling system, a control system and the like into a container; besides the advantages of low noise and high heat dissipation efficiency of the water-cooled SVG, the SVG has the advantages of high integration degree, good protection performance, low transportation and installation cost and the like; the method is particularly suitable for severe environments with large wind sand, large salt fog, high temperature, high humidity, heavy pollution and the like. The development direction of box type water-cooling SVG in the future is smaller occupied area, higher integration level and more compact structure, which are important problems faced by the box type water-cooling SVG at present.

The existing container of the SVG equipment is loaded with a power system, a water cooling system and a control system through a box body, however, the high-voltage SVG equipment is usually formed by connecting dozens of power units in series, so the volume of a power valve group determines the capacity of the whole container; the common power valve banks are arranged on a single side, the length of the container is often very long (exceeding the length of the conventional container), the processing and transportation of the container are difficult, and the problem can be solved by dividing the container into a plurality of containers without any intention, so that the field requirement on the site is increased; with the design of dividing into multiple boxes, the waterway system needs to be divided into multiple groups, so that the complexity and the cost of the waterway system are increased, the waterway connection among the boxes also needs to be adjusted continuously according to the field placement condition, and the unification cannot be realized; the optical fibers and cables among the multiple boxes are connected, so that the arrangement is disordered and unreasonable, and meanwhile, special requirements are imposed on facilities such as civil engineering and cable ducts in a construction site, and great troubles are caused for site construction.

Some SVG container designs have also adopted the valves structure that the biserial was put, nevertheless because unit business turn over terminal copper bar and business turn over water route joint distribute in both sides around, can't realize the single face of unit and maintain, though adopted the biserial to arrange, but all need leave between the biserial and both sides around with and maintain the passageway, though reduced the size of long direction like this, but increased the dimensional requirement of depth direction, do not reach the requirement that reduces the area equally. Such as: chinese patent application No.: 201620909232.3, a two-column box-type water-cooled SVG valve stack is disclosed.

Disclosure of Invention

The utility model aims at providing a high pressure is compact water-cooling SVG electric container back-to-back, area is littleer, and the structure is compacter, can wholly transport, and the installation is maintained convenient rationally.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a high-voltage back-to-back compact water-cooling SVG electrical container is divided into a high-voltage cabin and a low-voltage cabin by a partition plate, wherein a water-cooling system is arranged in the low-voltage cabin, three power valve groups are arranged in the high-voltage cabin, and each power valve group is arranged in each phase; each power valve group is arranged in layers, each layer is provided with a plurality of SVG power units, each layer of SVG power units are arranged back to back in double rows, and inlet and outlet terminal copper bars and inlet and outlet water ports are installed at the front parts of the SVG power units.

Still include frame construction, frame construction comprises horizontal insulating beam, multilayer king word insulating beam, vertical insulating beam, reinforcement insulating beam, and horizontal insulating beam layering arranges, installs SVG power unit on the horizontal insulating beam, horizontal insulating beam and vertical insulating beam fixed connection, both ends and multilayer king word insulating beam fixed connection about vertical insulating beam, fixedly connected with reinforcement insulating beam between the vertical insulating beam.

The SVG power unit is capable of being pushed backwards along the front end of the guide rail; the rear part of the guide rail is fixedly connected with a guide rail fixing column, and the cross section of the guide rail is L-shaped.

And a square opening is formed in the lower rear part of the shell of the SVG power unit.

And the transverse insulating beam is fixedly connected with the front part of the shell of the SVG power unit through a fixing bolt.

The copper bars in the front row and the rear row of each power valve group are in the same connection form, and each copper bar in the front row and the rear row comprises an input copper bar, a serial copper bar, an interlayer copper bar and an output copper bar; the series copper bars are connected with inlet and outlet terminal copper bars of the SVG power units on the same layer, the input copper bars of the front row are connected to the output copper bars of the front row through the series copper bars and the interlayer copper bars, the output copper bars of the front row are connected with the input copper bars of the rear row through the connecting copper bars connected to the side part of the power valve group, and the input copper bars of the rear row are connected to the output copper bars of the rear row through the series copper bars and the interlayer copper bars and are led out.

The cable is connected with the output copper bar, the cable penetrates through the current transformer, and two sides of the current transformer are fixed by the inverted cable clamp.

The water cooling system is characterized by further comprising a water cooling pipeline connected with the water cooling system, wherein the water cooling pipeline comprises a water inlet main pipe, a water return main pipe and a lower layer hose, the water inlet main pipe is arranged below the power valve group, the water return main pipe is arranged above the power valve group, the cold water main pipe is connected with a cold water output port of the water cooling system, and the water return main pipe is connected with a return port of the water cooling system; the return water is responsible for and is connected with a plurality of upper hose, the person in charge of intaking is connected with a plurality of lower floor hose, the coolant liquid flows in the water inlet of the SVG power unit of lower floor through lower floor hose, flow in layer hose by the delivery port of the SVG power unit of lower floor again, get into the water inlet of the SVG power unit of upper strata through layer hose, flow in the water inlet of the SVG power unit of upper strata again through layer hose again, until the SVG power unit of the superiors, get into the return water through upper hose at last and be responsible for.

The water cooling pipeline is characterized in that the water inlet main pipe and the water return main pipe are respectively provided with three sections, and the front ends of the water inlet main pipe and the water return main pipe of each section are connected with water pipe valves.

Still include the wall bushing, the intraductal mounting panel of cover, the sleeve pipe outer mounting panel, waterproof cushion, wall bushing is on SVG electrical container's box, sleeve pipe outer mounting panel and wall bushing fixed connection, be equipped with the poling hole in the middle of the intraductal mounting panel of cover, poling hole to the intraductal mounting panel edge of cover are opened there is the width to be the gap more than 5mm, the box of intraductal mounting panel fixed connection at SVG electrical container of cover, be equipped with waterproof cushion between intraductal mounting panel of cover and the sleeve pipe outer mounting panel, the intraductal mounting panel of cover and the sleeve pipe outer mounting panel are by bolt fixed connection.

Compared with the prior art, the beneficial effects of the utility model are that:

high pressure back of body formula compact water-cooling SVG electric container has compact structure, and area is little, the advantage that can wholly transport specifically is:

1. the high-voltage part and the low-voltage part are integrated in the same container, the high-voltage part is divided into three phases, each phase is provided with a power valve group, and the power valve groups are of a multilayer structure, so that the occupied area is reduced.

2. The SVG power unit on every layer of power valves arranges back-to-back biserial, and the centre need not to leave and maintains the passageway, makes the space utilization of hyperbaric chamber higher, and the structure is compacter, and the volume is littleer, has not only realized single container and has integrated the design, still dwindles the volume of container greatly, and the effectual project site area of having solved is little, and the difficult problem that the space requirement is high has also practiced thrift on-the-spot construction and construction cost, has improved production efficiency and has saved the engineering time.

3. The inlet and outlet terminal copper bars and the water inlet and outlet are arranged at the front part of the SVG power unit, namely, the SVG power unit adopts a single-side maintenance structure, the single-side maintenance structure can bring great convenience to installation, operation and maintenance, the space can be saved, and the structure is more compact.

4. The wall bushing adopts the design form of the inner and outer mounting plates, so that the wall bushing is mounted from the outside of the container to the inside, the mounting and dismounting convenience is improved, more operation spaces do not need to be reserved in the container, the inner space is saved, and the heating hidden trouble caused by vortex is solved.

Drawings

Fig. 1 is a schematic diagram of the internal layout of a high-voltage back-to-back compact water-cooled SVG electrical container.

Fig. 2 is a front view of a power valve block.

Fig. 3 is a side view of a power valve block.

Fig. 4 is a perspective view of a power valve block.

Fig. 5 is a schematic structural diagram of the front part of the SVG power unit.

Fig. 6 is an enlarged view of a portion I of fig. 5.

Fig. 7 is a schematic structural diagram of the rear part of the SVG power unit.

Fig. 8 is an enlarged view of a portion ii of fig. 7.

Fig. 9 is a schematic structural view of a water cooling pipeline.

Fig. 10 is a schematic structural diagram of a water cooling pipeline of a power valve group.

Fig. 11 is a schematic illustration of the connection of the wall bushing.

Fig. 12 is a schematic view of the installed state of the wall bushing.

Fig. 13 is a schematic view of a cable connection.

Fig. 14 is a schematic structural view of the outer frame.

In the figure: 1-high-pressure cabin 2-low-pressure cabin 3-partition 4-power valve group 5-water cooling system 6-fire extinguisher 7-air conditioner 8-control system 9-SVG power unit 10-guide rail 11-transverse insulating beam 12-multilayer Chinese character 'wang' insulating beam 13-longitudinal insulating beam 14-reinforced insulating beam 15-input copper bar 16-series copper bar 17-interlayer copper bar 18-output copper bar 19-connecting copper bar 20-10kV insulator 21-optical fiber trunking 22-water inlet main pipe 23-water return main pipe 24-upper hose 25-interlayer hose 26-lower hose 27-water pipe valve 28-water pipe clamp 29-wall bushing 30-bushing inner mounting plate 31-waterproof rubber gasket 32-bushing outer mounting plate 33-travel switch 34-cable 35-cable clamp 36-current transformer 37-channel steel base 38-channel steel top seat 39-square tube 40-fixed column guide rail 41-square opening 42-inlet and outlet terminal copper bar 43-water inlet 44-fixed bolt 45-water outlet gap.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.

Example 1

Referring to fig. 1-8, the high-voltage back-to-back compact water-cooling SVG electrical container is divided into a high-voltage cabin 1 and a low-voltage cabin 2 by a partition plate 3, namely, a high-voltage part and a low-voltage part are integrated in the same container, so that the isolation of a high-voltage system and a low-voltage system is ensured, the layout is reasonable and compact, and the installation and maintenance are facilitated. A water cooling system 5, a fire extinguisher 6, an air conditioner 7 and a control system 8 are arranged in the low-pressure cabin 2, three power valve banks 4 are arranged in the high-pressure cabin 1, and each power valve bank 4 is arranged in each phase; every power valves 4 layering is arranged, reduce area, every layer is arranged a plurality of SVG power unit 9, the SVG power unit 9 on every layer is arranged back-to-back biserial, power valves 4 are constituteed to a plurality of SVG power unit 9 series connection, SVG power unit 9 forward portion installs business turn over terminal copper bar 42 and inlet outlet 43, 44, therefore connect copper bar 19 and water-cooling pipeline and all set up front end one side at SVG power unit 9, therefore the front side maintenance of overall structure has been realized.

Referring to fig. 2-4, further, the SVG power unit 9 is mounted on a frame structure, the frame structure is lapped by using insulating frame profiles, taking a power valve bank 4 as an example, the frame structure is composed of a transverse insulating beam 11, multiple layers of wang insulating beams 12, a longitudinal insulating beam 13 and a reinforcing insulating beam 14, the transverse insulating beam 11 is arranged in layers, the SVG power unit 9 is mounted on the transverse insulating beam 11, the transverse insulating beam 11 is fixedly connected with the longitudinal insulating beam 13, the upper end and the lower end of the longitudinal insulating beam 13 are fixedly connected with the multiple layers of wang insulating beams 12, and the reinforcing insulating beam 14 is fixedly connected between the longitudinal insulating beams 13. The transverse insulating beam 11 is fixedly connected with the front part of the shell of the SVG power unit 9 through a fixing bolt 45. Adopt frame construction, support SVG power unit 9 that can be better when guaranteeing to support intensity, guarantee the electrical insulation between SVG power unit 9. And an optical fiber trunking 21 is fixedly connected to the transverse insulating beam 11 connected with the front part of the SVG power unit 9.

5-8, guide rails 10 are fixedly connected between the transverse insulating beams 11, and the SVG power unit 9 can be pushed in backwards along the front ends of the guide rails 10; the rear part of the guide rail 10 is fixedly connected with a guide rail fixing column 40. The cross section of the guide rails 10 is L-shaped and symmetrically arranged, and a pair of guide rails 10 support an SVG power unit 9. The rear lower part of the shell of the SVG power unit 9 is provided with a square opening 41, and the size of the square opening 41 is matched with the guide rail fixing column 40.

When the SVG power unit 9 is installed, the SVG power unit 9 is pushed in from the front side backwards along the guide rail 10 until the guide rail fixing column 40 enters the square notch 41, so that the SVG power unit 9 is limited in the backwards and upwards directions, and the vertical surface of the L-shaped guide rail 10 also has the limiting function in the transverse left and right directions, so that the rear structure of the SVG power unit 9 can meet the limitation in the left and right directions, the up and down directions and the backwards direction and can be pulled out from the front side; the front side of the SVG power unit 9 is fixed with the transverse insulating beam 11 through a fixing bolt 45. During maintenance, the SVG power unit 9 can be extracted only by disassembling the fixing bolt 45. Therefore, the SVG power unit 9 is fixed by the fixing bolt 45 on the front side and limited on the rear side, so that the front side single-side maintenance of the SVG power unit 9 is realized. Therefore, a maintenance channel does not need to be reserved between the front and rear double-profit SVG power units 9, and only the electrical distance of the SVG power units needs to be met, so that the front and rear distances are saved, and the structure is more compact.

In addition, the front and rear copper bar connection forms of the power valve group 4 adopt the same structure, as shown in fig. 2-4, the front and rear copper bars of the power valve group 4 respectively comprise an input copper bar 15, a series copper bar 16, an interlayer copper bar 17 and an output copper bar 18; the series copper bar 16 of the front row is connected with the inlet and outlet terminal copper bar 42 of the SVG power unit 9 of the front row on the same layer, the input copper bar 15 of the front row on the upper left is connected with the series copper bar 16 of the front row, the series copper bar 16 on the rightmost side of the layer is connected with the interlayer copper bar 17, the next layer of series copper bar 16 is connected through the interlayer copper bar 17, so that the output copper bar 18 is connected to the front row, the output copper bar 18 of the front row is connected with the input copper bar 15 of the rear row through the connecting copper bar 19 connected to the side of the power valve group 4, the input copper bar 15 of the rear row is connected in the copper bar connecting mode of the front row, and the output copper bar 18 connected to the rear row is led out finally. Wherein, the series copper bar 16 of the back row is connected with the inlet and outlet terminal copper bar 42 of the SVG power unit 9 of the back row on the same layer. By adopting the copper bar connection mode, the consistency of the copper bar connection structure is ensured, and convenience is brought to installation and maintenance. A 10kV insulator 20 is connected between the connecting copper bar 19 and the longitudinal insulating beam 13.

Example 2

In this embodiment, a water cooling pipeline is further designed based on embodiment 1.

Referring to fig. 9 and 10, the high-pressure back-to-back compact water-cooling SVG electric container is further provided with a water-cooling pipeline connected with the water-cooling system 5, the water-cooling pipeline comprises a main water inlet pipe 22, a main water return pipe 23 and a lower layer hose 26, the main water inlet pipe 22 is arranged below the power valve group 4, the main water return pipe 23 is arranged above the power valve group 4, the main water cold pipe is connected with a cold water outlet of the water-cooling system 5, and the main water return pipe 23 is connected with a return port of the water-cooling system 5; the backwater main pipe 23 is connected with a plurality of upper layer hoses 24, and the water inlet main pipe 22 is connected with a plurality of lower layer hoses 26. The water cooling pipeline has a simple and effective structure, and each side of the power valve group 4 is provided with an upper water inlet main pipe 22 and a lower water return main pipe 23; SVG power unit 9 between upper and lower layer adopts hose 25 series connection between the layer, need not to set up many water pipe branch roads, reduces the quantity of pipeline interface, reduces the risk of leaking, improves the security.

The water-cooling main machine of the water-cooling system 5 drives the cooling liquid to enter the water inlet main pipe 22 at the lower part, the cooling liquid in the water inlet main pipe 22 flows into the water inlet 43 of the SVG power unit 9 at the lowest layer through the lower layer hose 26 (the water inlet 43 is connected with the lower layer hose 26 through a joint), the cooling liquid flows into the SVG power unit 9 to absorb heat for cooling, the cooling liquid after absorbing heat flows into the interlayer hose 25 from the water outlet 44 of the SVG power unit 9 at the lowest layer (the water inlet 43 is connected with the interlayer hose 25 through a joint) and enters the SVG power unit 9 at the upper layer, then sequentially enters the water inlet 43 of the SVG power unit 9 at the next upper layer through the interlayer hose 25 until reaching the SVG power unit 9 at the uppermost layer, finally enters the water return main pipe 23 through the upper layer hose 24 and further flows back to the water-cooling main machine, the water-cooling main machine reduces the temperature of the cooling liquid and then enters the water inlet main pipe 22 again, and a water-cooling loop is formed through the processes, so as to continuously cool the SVG power unit 9.

Corresponding three groups of power valve groups 4, the water inlet (return) main pipe also correspondingly adopts a three-section design, and the front end of each section of the water inlet main pipe 23 and the water return main pipe 23 is connected with a water pipe valve 27, so that the maintenance can be carried out only by the valve on one section of the corresponding pipeline when the unit is overhauled, and the coolant in the whole pipeline does not need to be discharged. In addition, the water pipe valves 27 are arranged at the front row and the rear row of the power valve group 4 and are at the same side with the water inlet and outlet 43 and 44 of the SVG power unit 9, so that the maintenance is convenient.

The whole water cooling pipeline is simple, a plurality of water pipe branches are not required to be arranged, the number of pipeline interfaces is reduced, the water leakage risk is reduced, and the safety is improved. In addition, the front and rear maintenance space range does not occupy additional space, and the structure is a main form of a compact structure.

The connecting copper bar 19 and the waterway system are arranged on one side of the front end of the SVG power unit 9, so that the front-side maintenance of the whole structure is realized.

Example 3

The present embodiment is a further design of the wall bushing 29 based on embodiment 1 or embodiment 2.

The high-voltage cable 34 is required to be connected into the electric container body through external incoming lines, the electric container body adopts a wall bushing 29 incoming line mode, three wall bushings 29 are arranged on the side wall and correspond to the A, B, C three-phase incoming lines, the interiors of the wall bushings 29 are respectively in one-to-one matching connection with the power valve groups 4, and the electric performance and the isolation performance are fully met. Referring to fig. 11 and 12, the sleeve outer mounting plate 32 is fixedly connected to the wall bushing 29, and the sleeve outer mounting plate 32 is made of a nonmagnetic stainless steel plate. The middle of the mounting plate 30 in the sleeve is provided with a pipe penetrating hole, so that the whole flange of the wall penetrating sleeve 29 can penetrate through the pipe penetrating hole of the mounting plate 30 in the sleeve, the lower part of the pipe penetrating hole is broken to form a gap 46, and the width of the gap 46 is more than 5mm, so that the vortex is prevented from generating heat. The mounting panel 30 fixed connection is equipped with waterproof cushion 31 between intraductal mounting panel 30 of cover and the intraductal mounting panel 32 of cover on the box of SVG electric container, and intraductal mounting panel 30 of cover and the intraductal mounting panel 32 of cover are by bolt fixed connection.

The wall bushing 29 is installed from outside to inside, the wall bushing 29 is installed on the bushing outer mounting plate 32 firstly, the waterproof rubber gasket 31 is added between the inner bushing mounting plate and the outer bushing mounting plate, the wall bushing 29 with the outer bushing outer mounting plate 32 fixed is sent into the through hole from outside, and finally the inner bushing mounting plate and the outer bushing mounting plate are fixed together by stainless steel bolts. The mounting form can improve the convenience of mounting and dismounting, does not need more operating space reserved in the box, and achieves the purpose of compact structure.

In addition, a travel switch 33 is arranged at the gate of the hyperbaric chamber 1, and the door is automatically powered off when opened, so that the potential misoperation hazard of entering without power failure is avoided, and the personal safety is guaranteed.

Example 4

The present embodiment is designed based on embodiment 1, embodiment 2, or embodiment 3 for the arrangement of the cable 34.

Referring to fig. 13, the three-phase power valve group 4 is connected by cables 34, two ends of each cable 34 are respectively connected to the output copper bars 18 of the power valve group 4, and pass through two current transformers 36, and two sides of each ac transformer are respectively fixed on a channel steel base 37 by cable clamps 35.

The whole star cable 34 is arranged in the front and rear maintenance space range, does not occupy additional space, is convenient to install and disassemble, and is a main form of a compact structure. In addition, the design that combines water cooling pipeline, water and electricity circuit homonymy design promptly realizes SVG power unit 9's single face and maintains, for installation and maintenance work bring very big convenience, saves space moreover, realizes compact structure.

Referring to fig. 14, a channel steel base 37 is welded on the bottom plate in the electrical container box, a channel steel top seat 38 is welded on the top cross beam, the channel steel base 37 and the channel steel top seat 38 both adopt a frame structure, and square pipes 39 are welded at two ends of the channel steel base 37 and two ends of the channel steel top seat 38. The water inlet main pipe 22 can be fixed on the channel steel base 37 by the pipe clamp 28. The outer frame consisting of the channel steel base 37, the channel steel top seat 38 and the square tube 39 is designed into an integrated structure, so that the firmness of the outer frame can be ensured, and convenience is brought to processing and manufacturing of manufacturers; having had firm channel-section steel top (bottom) seat as guaranteeing, power valves 4 after the installation just can become an organic whole with outer frame, has guaranteed the steadiness of container integration transportation, realizes that power valves 4 and container are whole together transported, does not need the dismouting part to bring the extra increase of work load and leads to the cost of labor to increase, and the time limit for a project increases.

The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation processes are given, but the protection scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.

Claims (10)

1. A high-voltage back-to-back compact water-cooling SVG electrical container is divided into a high-voltage cabin and a low-voltage cabin by a partition plate, and a water-cooling system is arranged in the low-voltage cabin, and is characterized in that three power valve groups are arranged in the high-voltage cabin, wherein each power valve group is arranged in each phase; each power valve group is arranged in layers, a plurality of SVG power units are arranged on each layer, the SVG power units on each layer are arranged back to back in double rows, and inlet and outlet terminal copper bars and water inlets and outlets are installed at the front parts of the SVG power units.

2. The high-voltage back-to-back compact water-cooling SVG electric container according to claim 1, characterized by further comprising a frame structure, wherein the frame structure is composed of a transverse insulating beam, a plurality of layers of insulating beams in the shape of Chinese character 'wang', a longitudinal insulating beam, and a reinforcing insulating beam, the transverse insulating beam is arranged in layers, the SVG power unit is mounted on the transverse insulating beam, the transverse insulating beam is fixedly connected with the longitudinal insulating beam, the upper end and the lower end of the longitudinal insulating beam are fixedly connected with the plurality of layers of insulating beams in the shape of Chinese character 'wang', and the reinforcing insulating beam is fixedly connected between the longitudinal insulating beams.

3. The high-voltage back-to-back compact water-cooling SVG electrical container of claim 2, characterized in that it further comprises a guide rail, a guide rail fixing post, a guide rail is fixedly connected between said transverse insulating beams, the SVG power unit can be pushed backward along the front end of the guide rail; the rear part of the guide rail is fixedly connected with a guide rail fixing column, and the cross section of the guide rail is L-shaped.

4. The high-voltage back-to-back compact water-cooled SVG electrical container according to claim 3, characterized in that the lower rear part of the housing of said SVG power unit is provided with a square notch.

5. The high-voltage back-to-back compact water-cooled SVG electrical container of claim 2, characterized in that said transverse insulating beam is fixedly connected with the front part of the casing of the SVG power unit by means of fixing bolts.

6. The high-voltage back-to-back compact water-cooled SVG electrical container according to claim 1, wherein said front and back rows of copper bars of each power valve bank are connected in the same form, and each of said front and back rows of copper bars comprises an input copper bar, a series copper bar, an interlayer copper bar, an output copper bar; the series copper bars are connected with inlet and outlet terminal copper bars of the SVG power units on the same layer, input copper bars of the front row are connected to output copper bars of the front row through the series copper bars and interlayer copper bars, output copper bars of the front row are connected with input copper bars of the rear row through connecting copper bars connected to the side portion of the power valve group, and input copper bars of the rear row are led out through output copper bars connected to the rear row through the series copper bars and interlayer copper bars.

7. The high-voltage back-to-back compact water-cooled SVG electrical container according to claim 6, characterized in that it further comprises a cable, an electric quantity transformer, the cable is connected with the output copper bar, the cable passes through the current transformer, both sides of the current transformer are fixed by the inverted cable clamp.

8. The high-pressure back-to-back compact water-cooled SVG electrical container according to claim 1, further comprising a water-cooling pipeline connected to a water-cooling system, wherein the water-cooling pipeline comprises a main water inlet pipe, a main water return pipe, and a lower layer hose, the main water inlet pipe is disposed below the power valve set, the main water return pipe is disposed above the power valve set, the main cold water pipe is connected to a cold water outlet of the water-cooling system, and the main water return pipe is connected to a return port of the water-cooling system; the return water is responsible for and is connected with a plurality of upper hose, the person in charge of intaking is connected with a plurality of lower floor hose, the coolant liquid flows in the water inlet of the SVG power unit of lower floor through lower floor hose, flow in layer hose by the delivery port of the SVG power unit of lower floor again, get into the water inlet of the SVG power unit of upper strata through layer hose, flow in the water inlet of the SVG power unit of upper strata again through layer hose again, until the SVG power unit of the superiors, get into the return water through upper hose at last and be responsible for.

9. The high-pressure back-to-back compact water-cooled SVG electrical container according to claim 8, characterized in that said water-cooling pipeline is three sections of water inlet main pipe and water return main pipe, and the front end of each section of water inlet main pipe and water return main pipe is connected with water pipe valve.

10. The high-voltage back-to-back compact water-cooling SVG electrical container of claim 1, characterized by further comprising a wall bushing, an in-bushing mounting plate, an out-bushing mounting plate, and a waterproof rubber mat, wherein the wall bushing is connected to the box body of the SVG electrical container, the out-bushing mounting plate is fixedly connected to the wall bushing, a through hole is provided in the middle of the in-bushing mounting plate, a gap with a width of 5mm or more is opened from the through hole to the edge of the in-bushing mounting plate, the in-bushing mounting plate is fixedly connected to the box body of the SVG electrical container, the waterproof rubber mat is provided between the in-bushing mounting plate and the out-bushing mounting plate, and the in-bushing mounting plate and the out-bushing mounting plate are fixedly connected by bolts.

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