WO2024069036A1

WO2024069036A1 - Modular transformation centre

Info

Publication number: WO2024069036A1
Application number: PCT/ES2023/070577
Authority: WO
Inventors: Juan García-Fuentes De La Fuente
Original assignee: Garcia Fuentes De La Fuente Juan
Priority date: 2022-09-28
Filing date: 2023-09-27
Publication date: 2024-04-04

Abstract

The invention relates to a modular transformation centre that comprises at least one transformer element (0) comprising a plurality of terminals (2), and at least one underground concrete chamber (3) containing at least one transformer element (0), characterised in that the chamber acts as a containment body, wherein the containment body (3) is buried in the ground, such that the terminals (2) are disposed above the containment chamber (3) and above the zero reference level of the ground, and wherein the upper part of the containment chamber (3) comprises a metal perimeter gasket (7) where the chamber is coupled, and at least one interface cabinet (B) comprising a plurality of lower inlet openings (8) for fresh air from the outside.

Description

MODULAR TRANSFORMATION CENTER.

OBJECT OF THE INVENTION

The present invention, modular transformation center, refers to a metal building in its emerging part and reinforced concrete in its underground part, to house an electrical power transformation center, for industrial or urban use, which is born as a single unit. as a transformation center and in a modular way it can be folded and/or duplicated according to the present or future needs of the installation, in addition to its exterior being able to adopt an aesthetic appearance that blends in with the urban scene. With an aesthetic appearance similar to the current Transformation Centers in their Industrial version, but with greater transforming power, motivated by the increase in the trend of current and future use of electricity as clean energy, with a great reduction in the occupation footprint, improving those used by the different electricity distribution companies in the world to provide low voltage power to domestic, commercial and industrial users, and in this case to adapt to multiple needs due to its modular design.

FIELD OF THE INVENTION

Currently there is a large number of buildings on the market, factory-built, prefabricated in concrete or metal, surface or underground, or even inside residential buildings, with multiple electrical typologies, and for operation or maintenance with interior or exterior, of powers equal to or lower than this presented invention. Each electrical energy distribution company defines the preferred Class for its facilities, the usual Class 10 being the usual one, this means that the transformer working outside or inside a dedicated building only increases by Δt ≤ 10k, prioritizing natural ventilation (ONAN). . The typology and general architecture spread throughout the world, the usual buildings place all their components of the Transformation Center on the same plane, therefore seeing their power limited or having to increase the size of the air inlets and outlets and in a very significant way, ening the building and/or opting for the use of forced ventilation (ONAF) with the consequent energy expenditure, thus worsening the energy classification of the complex.

Typically, buildings for this industrial application in the world, as indicated above, are prefabricated in concrete, metal, for surface application, underground, etc., but all of them are large in size and weight, having to be transported from the factory to the destination. by means of special transport, making their installation in any industrial place difficult, but being totally unviable in urban areas, with the foreseeable future powers, especially if they are transported, as is usually done, fully installed with all their components inside from the factory.

Technological evolution and the prevention of occupational risks, as well as the emergence of new markets motivated by climate change and the demand for low CO ² emissions, encourage repowering Transformation Centers with a new jump in power, both for users and distributors, motivated by a greater foreseeable use of systems powered by electrical energy with automotive and domestic heating and cooling systems or for the National and/or Local Grid to absorb the excesses of local specific micro generation, with the purpose of abandoning the obsolete energy sources that we currently still use, polluting energy based on hydrocarbons, a situation that motivates the European Union to regulate energy efficiency and better demands on losses for transformers, as well as the future elimination of highly polluting gases such as sulfur hexafluoride (SF6), widely used in these medium voltage power distribution systems.

With the invention Modular Transformation Center (CTM), current manufacturing buildings are improved, reducing their occupancy footprint and volume per unit, being easy to expand in the future; As it is built outdoors (non-habitable), possible releases of maintenance workers due to electrical accidents in buildings confined above ground level or underground are avoided, and can be integrated into the urban scene or for industrial use and easy to transport between national and international warehouses. international in ordinary TIR type vehicles, and on site with the vehicles also common in this type of facilities, in a truck with a built-in crane of average load <10 Tm.

BACKGROUND OF THE INVENTION

On November 6, 2002, the ES200202680U, SPECIAL URBAN TRANSFORMATION CENTER with the acronym CeTur was presented and subsequently expanded to a Patent registered in Canada, USA, Mexico, Brazil, Australia, Japan, China and a European patent, it was thought only of the standardized power requirements in the Distribution Companies at the urban level and that the Transformation Center configured a Technological Island that was integrated into the urban scene of the moment. Due to its design and in particular its small space, it makes it difficult to use it with the current powers and in the foreseeable future, as a Customer Transformation Center, and it was only applicable to the Transformation Center of the distribution company.

The CTM, as an invention, also improves the ES200202680U of November 2002, then the defined advertising was of a static type, installed on doors and a light box with an aluminum structure, new technologies allow for more efficient LED-type lighting for industrial applications, and including placing application LED monitors in the spaces of light boxes exterior implemented luminosity control and programmed diffusion from a center for the creation or reproduction of advertising or informative content of interest to the citizens of the municipality and for its benefit.

DESCRIPTION OF THE INVENTION

The invention now presented, CTM improves all aspects of the previous invention, such as:

1) Increase in power and size due to loss reduction in the new transformers.

2) Future forecast for the use of SF6-free cells, according to EU regulations soon to be implemented.

3) Height-adjustable skids, so that the transformer pumps always exceed the zero level.

4) Prefabricated underground chamber of reinforced and modular concrete, assembled on site.

5) Polyester tub, to collect possible oil spilled from the transformer.

6) Stop fires between the spilled oil reservoir and the transformer.

7) Possible installation of a free discharge automatic extinguishing system.

8) Improved ventilation ducts, which evacuate heat from the higher power transformers.

9) In an underground chamber, with separators and windows that direct the flow of cold air to the base of the transformer and allow sampling of the transformer oil from the base of one of the cabinets installed one to the right and left of the central cabinet. .

10) Input/Output of Ground, Medium Voltage, Low Voltage and control fiber optic cables, etc.

11) In its emerging part built by stainless steel panels. and Aluminum, which attenuate electromagnetic radiation. 12) Modular panels, superimposed or not, for static or dynamic advertising of LED TV screens.

13) Modular construction, independent cabinets for each application.

14) Multiple architectures of one to four CTM units, forming the transformation center as independent or centralized.

15) Configuration of Electrolinera, Bus Stop for urban or industrial use.

16) Exterior coverage as an advertising landmark or kiosk, “Technology Island”.

17) Greater path of incandescent gases and/or materials projected due to short circuit in Medium Voltage cables or switches.

The CTM consists of arranging the different elements on two superimposed planes: on the upper plane above zero level, the periodic manipulation elements, such as medium voltage switching and control, low voltage panel and metering cabinet of the electrical distribution company, and, on a lower and buried level, the transformation.

The previously mentioned elements are located in four well-differentiated places, cabinets or chambers, both for applications for the distribution company and for the client, composed of:

1 ^o Underground Concrete Chamber (A) in (figure 1). - Intended to house the power transformer, input/output of ground cables, communication and control, medium and low voltage, and fresh air inlet ducts to the lower part of the transformer station.

2 ^or Stainless Steel Interface. and Emerging aluminum above ground level (B) in (figure 1). - Intended to mechanically connect the concrete chamber with the exterior cabinets, it incorporates ventilation inlets and access doors to the transformer pump cover.

3 ^or Stainless Steel Central Cabinet. and Aluminum above zero level (C) in (figure 2). - Intended to house the control and switching cells, medium voltage input/output and low voltage output to your control panel. 4 ^or Stainless Steel Cabinets. and Aluminum installed one on the right and one on the left of the central cabinet (D) in (figure 2). - Intended to house Low Voltage panels, Counters, Communication, etc. and one with practicable floor.

This new arrangement improves what was presented in ES200202680U, by separating according to the voltages of use and functions, into independent cabinets, limiting their handling due to the qualification of maintenance personnel, with all construction and transportation to the site being completely modular. It also improves the entry of fresh air to the base of the transformer through head ducts and labyrinths from the inlet grilles (8) located above ground level, providing a reservoir at the bottom of the concrete chamber and connection to the sewer; These modifications in the ducts thus promote a natural draft and evacuate all the heat through the outlet grilles (9).

The shape of the aforementioned ventilation labyrinths (1) and its arrangement guarantee the attenuation of the noise produced by the transformer and the vibrations are attenuated when it is placed on rubber elements, as well as the composition of its walls of the entire emerging set in Steel Stainless and Aluminum attenuate the radiation of the Electromagnetic Field, and finally these conduits also serve to conduct incandescent gases and material released in a possible Short Circuit in cables or medium voltage switching elements, channeling them to places of minimal impact, due to the arrangement of these labyrinths and because the exits to the outside are very far from the maintenance operators or any pedestrians in operation; highlighting that the possible gas outlets would be approx. 2.9 meters above the ground and they would do so after having traveled approx. 2.1 meters in the opposite direction to the safety valves directed to the CTM pit, part of these gases having been distributed through the fresh air inlets, having had to overcome the inertia of the system supported by ONAN flow, and after having approx. 3 meters, releasing fresh air through the inlet windows, located between +0.2 and 0.5 meters above ground level. The mentioned data is guaranteed even for maintenance, cutting or commissioning operations of the installation, with open access doors to the medium voltage switching elements, since these are framed with deflectors (17) (size according to type and manufacturer) that prevent the escape of gases to the front, incorporating basic factory interlocks or special interlocks at the request of the end customer in the inspection doors or access to the transformer. What has been indicated so far reflects an increased and unusual security in buildings for this use worldwide (figure 3).

The semi-buried Transformer is installed on the skids between height-adjustable rails (12), thus adapting to any initial installation power or manufacturing design, guaranteeing that the active parts, pump cover (2), are not affected. due to water runoff or occasional flooding. The improvement is also extendable to a perforated sheet (4) with a few small holes that allows passage to the pit, protected with a tub (6), from possible spilled oils and poor oxygenation, acting as a firebreak, located between the skids and the pit, occupying the entire surface. The aforementioned glass or tub, with sufficient capacity to house the oil from any installable transformer, will be made of polyester reinforced with fiberglass that guarantees watertightness and absence of contamination due to leaks to the subsoil, (figure 2).

The CTM is designed in a “modular” way, composed of four types of cabins (A, B, C and D):

A) Underground concrete chamber for the Transformer. B) Interface made of stainless steel sheet. and Aluminum. C) Cell Cabinet made of stainless steel sheet. and Aluminum. D) Low Voltage Switchboard Cabinets also made of sheet steel. Stainless and Aluminum. Their dimensions and weights will be adapted to conventional TIR transport; they can also be transported to the site from the local warehouse with an open-box truck/crane for urban maneuverability.

The cabinets will be made of stainless steel sheet. and Aluminum cut and folded, being assembled in the factory with the help of a riveter and minimal Tig welding. On site, the different compartments (A, B, C, D) are quickly assembled with stainless steel screws. CTM constitutes a novelty in its manufacturing, assembly, installation and improves its national and international transportation (figure 9).

A) Underground concrete chamber for Transformer. - Located below ground level, built using prefabricated panels of reinforced and grounded concrete, composed of a slab and four sides assembled and their joints waterproofed on site with Butyl tapes or simple asphalt fabric, installing an upper frame, with oval screws in the highest area. high in line with “zero level”, leveling the entire system from there. In its lower part, the adjustable fastening elements for the transformer skids (12), fire break plates and polyester tub for fastening the transformer skids, fire break plates (4) and polyester tub (6) for collection will be installed. of possible spilled oils. The aforementioned upper concrete frame will have drills for chemical plugs or studs installed in the concrete chamber for an M16 nut. The first interface body (B) will be installed and screwed onto the frame (figure 1).

B) Interface structure and access to Transformer pump cover. - Lower part of the central emerging body of each unit, each face starts with a rectangular structure made of stainless steel sheet in the shape of (C) with the face open to the inside, joined with screws to each other and using Serbloc Inox and/or screws, and closing with stainless steel plates. and Aluminum previously bent at an angle to be riveted, repeating the operation until the desired height is reached. The aforementioned internal structure stiffens the set, and provides it with door frames for access and inspection of the Transformer and fresh air inlet vents for ventilation (8) with mosquito net, formed by inverted V/A-shaped slats (8), two front doors with grounding and retention (11), on frames with neoprene gasket To increase the tightness, these doors will give access to the transformer pump plate (2). The entire prefabricated assembly is installed on site on the chamber built in prefabricated concrete and flush with zero level, this Interface emerging to place the Cell Cabinet (C) above it.

C) Switching cabinet or cells. - Upper part of the central body of each unit, installed and screwed with 4 screws on the structure (B), and without a bottom, that is, communicated with the central part of the concrete Chamber through the existing separation between the entrances of right and left ventilation. The switching units will be housed in it, the aforementioned cabinet will have in its upper part the ventilation outlets (9) crowned by a flat roof superimposed as a drip (16) and at the indicated height windows for the exit of low voltage cables in the direction of the top of the Low Voltage Panel (21). In the front part, a double swing door (10) with its corresponding retainers and ground connections, and with a handle and owner's master key lock, executed these will give a view to the front of the cells framed by deflectors (17) that prevent exit. of gases at the front in the event of a short circuit in the switches or cable box, also having access at the bottom to the basic interlocking bolts for the transformer doors, and interlocking with a special key can be installed at the customer's request. For installation on site, eyebolts on the flat roof and its corresponding peripheral drip (16).

D) Low Voltage Switchboard Cabinets. - Installed at the head on the shortest side of the rectangle, with a practicable floor, for the passage of Low Voltage output cables and/or for sampling transformer oil, above the air inlets for ventilation, they will have access doors (13) swing with retainers and ground connections; for company version distributor, entry/exit through the vents that can be opened from the interior that allow access and quick connection to the LV Panel of the voltage from an emergency Generating Set to guarantee the supply.

From what has been explained so far, it can be seen that the CTM invention, the result of the experience of units in operation, constitutes many improvements to the ES200202680U, of novelty, inventive activity and industrial application, also of easy reuse of the material used at the end of its useful life. as a Transformation Center having primarily used Stainless Steel. and Riveted aluminum and with respect to the aesthetic finishing material for this model or the one used in the external envelope, anodized or lacquered aluminum and tempered or laminated glass will be used in places of advertising dissemination or citizen communication, thus following the already established criteria.

The modular construction of the invention of independent cabinets per application, generates multiple architectures of one to four independent or centralized Transformation Centers (figures 5 and 6), enabling spaces for other services, such as Bus Stop (figure 7 and 8) with all the inherent and updated services such as industrial or urban Electrostation, such as high power converters for Ultra Fast Chargers, Wi-Fi systems for public use for public transport users, service information panels and expected online delay times, banks, etc.

DESCRIPTION OF DRAWINGS

For a better understanding of the invention, the following figures are included:

Figure 1- Shows a view of the Plan, Elevation and Profile of the prefabricated concrete Chamber, cabin (A) and the interface (B) located above the Chamber with example transformer. Figure 2- Shows a view of the Plant, a total Elevation and Profile and a seen Elevation of the modular transformation center (CTM) type distribution company or client, with an example of equipment of Medium Voltage Cells, Transformer, Low Voltage Panel, Panel Measurement and insulating bench.

Figure 3- Shows a view of the reaction to the short circuit in each modular unit (CTM).

Figure 4- Shows a view of the Plan, Total Elevation and Seen Elevation of the CeTur- (CTM) with a second aesthetic envelope (20) as a Kiosk or Technological Island.

Figure 5- Shows a view of the Plan, Total Elevation and View Elevation of 2 CTM installed in line, double function.

Figure 6- Shows a view of the Plan, double functions attached to the rear and Profile view of 2 CTM, with a duplicate function.

Figure 7- Shows a Plan and Profile view of two separate/independent centers joined by a shelter roof to 6 converter cabinets for ultra-fast charging of electric vehicles and space with benches (18) for waiting and shelter at 2 Bus stops.

Figure 8- Shows a plan view with 2 transformation centers with another configuration, where 4 bus stops and a large waiting space without shelter are generated.

Figure 9- Shows a plan and elevation view of the trailer trailer of a standard Mega TIR with two-module enclosures, without equipment.

And the reference signs used are the following:

The (0) is the transformer. (1) are the ducts, separators and windows that conduct the cold air flow to the base of the transformer and subsequent outlet.

(2) is the pump cover of the transformer where the following is located: manual and vacuum regulation switch, plug-in MV covers pass, LV bus pass, thermometer and/or DGPT relay (gas, pressure and temperature detector), and lifting eyes.

(3) is the underground concrete chamber assembly with grounded and modular reinforcement.

(4) is the perforated sheet located between the tub and the transformer (firewall)

(5) is the fill of the excavation.

(6) is the collection tank for possible spilled oils from the transformer.

(7) is the pehmetral weatherstrip for adaptation to the terrain.

(8) are the fresh air intake grilles from outside to the CTM.

(9) are the air outlet grilles to the outside, which evacuate the heat produced by the transformer.

(10) are the access doors to the Medium Voltage Cells.

(11) are the access doors to the Transformer, pumps, voltage changer, thermometer, etc.

(12) are the height-adjustable skids joined by stringers for the transformer seat.

(13) is the side access door to the Low Voltage Panel, Measurement, etc.

(14) is the Mupi and/or TV superimposed on the front and side panels.

(15) is the connection to the sewer.

(16) is the detail of the drip on the flat and superimposed roof.

(17) locates the deflectors (figure 5) that frame the front of the Medium Voltage Cells.

(18) are the banks in the bus stop model (figures 9 and 10)

The (19) usual situation of safety valves (figure 5)

The (20) is the ^2nd envelope (figure 6).

The (21) passage of low voltage cables from the cabinet (C) to cabinets (D).

The (MT) is the entry/exit of Medium Voltage cables. The [BT] is the output of low voltage cables.

The (www) is the entry/exit of communication cables.

He is a safety and operational ground operator.

(A) are the prefabricated concrete panels that make up the Underground Chamber (figure 1).

(B) is the interface set between concrete and pop-up cabinets in (figure 1).

(C) is the Medium Voltage Cell Cabinet assembly in (figure 2).

(D) is the set of Low Voltage Switchgear Cabinets in (figure 2).

PREFERRED MODE OF EMBODIMENT

The construction of all cabinets and emerging metal parts will be made of Stainless Steel. as indicated in section B) and reinforced with aluminum panels to mitigate electromagnetic radiation.

All stainless steel casing. It is sewn to guarantee continuity with the ground and even joined to the prefabricated reinforced concrete base by electro-welded mesh.

The modular transformation center invention, as it is an enclosure of electrical equipment intended for the transformation of distribution voltage to voltage for domestic or industrial consumption, is characterized by being designed to accept Transformers and Cells standardized in the EU and many others. countries with our requirements and equivalent regulations. This situation once again motivates the Modular spirit, expanding this functionality of the invention, with the sets being built and transported with ordinary means (Mega Tir) from the factory to the warehouse of the product distributor in the country of destination, the four/five sides of each metal set or concrete of a “whole modular assembly”, with assembly at destination, saving space and weight in transport and adapting to nationally manufactured electrical equipment and/or continental European regulations. For the installation of the CTM on site, the underground Chamber (A) must be excavated for the prefabricated and modular reinforced concrete structure, placing the slab at the bottom on a leveled and compacted gravel bed, prior to the construction of the Earth System. electricity necessary in accordance with the standard project of the distribution company in the area. Helped with the crane of the truck that transports the floor and the 4 sides to the site, they will be unloaded and placed assembled using the metal fittings that guarantee the continuity of the earth of the reinforcement meshes, at the appropriate depth and the location indicated by the person in charge. of work, finally we will cover the joints with butyl tape or asphalt fabric and we will ensure the tightness of the earth inlet pipes, medium voltage inlets/outlets, low voltage outlets, as well as communications. To fill the excavation we will apply gravel with diameters of approx. 2 cm, compacted and on top at the appropriate height, tape indicative of tubes with tension.

The emerging metal parts of the CTM will be screwed to the concrete structure, Chamber (A) with the assembly B) Interface below together C) Switching Cabinet or cells with their corresponding Low Voltage Cabinets D) installed as a backpack.

Having thus completed the installation of the CTM enclosure, the electrical installation of the CTM's Medium and Low voltage switchgear will then begin.

In the CTM-Bus Stop versions, the installation of the CTM is identical to what was previously defined, adding a roof to the CTM assemblies and banks (18) of the waiting part, as well as the metal structure to locate the high-power converters for Chargers. Ultra Fast with the configurations (figures 7 and 8). The CTM due to its modular construction, taking a first and only module, it can also be covered by a second aesthetic envelope as a Kiosk or Technology Island (20) with the final name of CeTur-CTM, see (figure 4). Its installation being the work of the internal part, identical to the previously defined and the external aesthetic part is supported by a base screwed to the concrete structure, on which 4 columns are screwed and braced with an upper counterbase in which the Elliptical polyester roof with drilled bottom to evacuate the heat produced by the transformer. It will have two front and rear front doors, the first with sliding opening with hidden guides and the second fixed, on these two doors with swing opening and at the back a light box for static advertising and/or space for an outdoor LED advertising TV monitor. dynamic. In the heads, the doors will be swinging with their corresponding retainers and the light box or change of signage is carried out later from the inside, as well as any operation or intervention on the outdoor Led TV monitors.

Claims

1.- Modular transformation center, characterized in that it comprises at least one transformer element (0) that comprises a plurality of pumps

(2), at least one underground concrete chamber (3) that comprises, inside, at least one transformer element (0), characterized in that the chamber functions as a containment vessel, where said containment vessel

(3) is buried in land, so that the pumps (2) are located above the containment chamber (3) and above the zero reference level of the ground, and where said containment chamber ( 3) comprises in its upper part a metal perimeter weather stripping (7) where said chamber is attached and, at least, one interface cabinet (B) that includes a plurality of lower openings for the entry of fresh air from outside (8).

2.- Modular transformation center, according to the previous claim, characterized in that these elements are located in four well-differentiated places, cabinets or chambers, both for applications for the distribution company and for the client, composed of:

3 ^or Stainless Steel Central Cabinet. and Aluminum above zero level (C) in (figure 2). - Intended to house the control and switching cells, medium voltage input/output and low voltage output to your control panel. 4 ^or Stainless Steel Cabinets. and Aluminum installed one on the right and one on the left of the central cabinet (D) in (figure 2). - Intended to house Low Voltage panels, Counters

3.- Modular transformation center, according to the previous claim, characterized in that said containment chamber (3) comprises a tub (6) of polyester reinforced with fiberglass with sufficient volume for the storage of all the transformer oil (0). in case of leaks.

4. -Modular transformation center, according to any of the previous claims, characterized in that said containment chamber (3) comprises at least one water evacuation conduit (15).

5.- Modular transformation center, according to any of the previous claims, characterized in that said containment chamber (3) comprises inside at least one fireproof plate (4) located superiorly with respect to the maximum level to be reached by the total volume of oil of the transformer element (0) in case of leakage of said oil, and where said fireproof plate (4) comprises a plurality of through holes.

6.- Modular transformation center, according to the previous claims, characterized in that the containment chamber (3) is made of reinforced and watertight concrete housed in the bottom of a tub (6) of fiberglass reinforced polyester and comprises inside, at least two stringers (12) located parallel to each other, and parallel to a plane defined by the minor surfaces of the chamber (3), in such a way that at least one transformer element (0) is coupled to said stringers (12).

7.- Modular transformation center, according to the previous claims, characterized in that the containment chamber (3) has Medium Voltage inputs/outputs (MT), Low Voltage output [LV], input of the Neutral and Protection ground according to the Distribution Company project, as well as

as telecommunications entrance (www).

8.- Modular transformation center, according to any of the previous claims, characterized in that the central cabinet (C) comprises a plurality of upper openings (9) for interior air outlet and where said openings (8,9) are connected to each other. and to an interior chamber where at least one transformer element (0) is located.

9.- Modular transformation center, according to any of the previous claims, characterized in that the central cabinet (C) of the emerging envelope (B,C,D) comprises at least one double front door located in the center, in the lower part (11) and another double and frontal one in the upper part (10), which gives access, the lower one to the transformer pumps and the upper one to the switching cells; This closet supports and communicates with two backpack closets to the left and right of it with at least one swing door (13) at 90° and 180° of the doors (10) and at least one ventilation inlet and outlet ( 8 and 9) also 90° and 180° from the frontals; Above the central closet and its two backpack closets it is closed with a flat roof with a 90° lip like a drip (16).

10.- Modular transformation center, according to any of the previous claims, characterized in that the construction of all the emerging elements is characterized by being made of stainless steel. and Aluminum, with the casing made of stainless steel. sewn to guarantee continuity with the ground and even joined to the prefabricated reinforced concrete base by electro-welded mesh.

11.- Modular transformation center, according to the previous claims, characterized in that the gases and materials are projected outside through the ventilation inlets/outlets of the assembly due to the effect of the overpressure.

12.- Modular transformation center, according to the previous claims, characterized in that the assembly on the upper front doors and the side doors can be installed at least one backlit MUPI for static advertising or outdoor Led monitors for dynamic advertising of local production or an external content center; These MllPIs or monitors will have a hinged upward opening in their upper part (14), for replacement of advertising, lighting or intervention on the monitors.

13.- Modular transformation center, according to the previous claims, characterized in that its corners have washers to screw lifting eyebolts for installation on site.

14.- Modular transformation center, according to the previous claims, characterized by the bottom of the cabinets (D) being practicable for passage of low voltage cables and for sampling transformer oil.

15.- Modular transformation center, according to the previous claims, characterized by having at least one cable passage (21) between the cabinet (C) and the cabinets (D).

16.- Modular transformation center, according to the CeTur-CTM version (figure 4), characterized in that it comprises at least one transformer element (0) that comprises a plurality of pumps (2), at least one underground concrete chamber (3) that It comprises, inside, at least one transformer element (0), characterized in that the chamber functions as a containment vessel, where said containment vessel (3) is buried in ground, so that the pumps (2) are located located above the containment chamber (3) and above the zero reference level of the ground, and where said containment chamber (3) comprises in its upper part a metal perimeter weatherstrip (7) where said chamber is attached and At least one interface cabinet (B) comprising a plurality of lower openings for fresh air intake from outside (8), in which the ^2nd housing the envelope comprising a sliding door and a plurality of swing or fixed doors and a plurality of columns anchored to the base of said chamber (A), at least one, internal cabinet, an interface (B), a central internal cabinet (C), and two internal side cabinets (D) and an elliptical overhanging roof with overhang and lower ventilation outlets.

17.- Modular transformation center, according to the previous claims, characterized in that, due to its modular conception, two units can be placed in line, duplicating the service of the application or different and doubling the previously mentioned duplicate, placing them on their backs, ( figure 5 and 6).

18.- Modular transformation center, according to the previous claims, characterized in that, due to its modular conception, two units (figure 2) or one unit (figure 5) and roof and fittings for Bus can be transported in MegaTIR (figure 9). Stop (figures 9 and 10).