WO2021074469A1 - Aparamenta eléctrica para instalaciones de generación de energía eléctrica - Google Patents
Aparamenta eléctrica para instalaciones de generación de energía eléctrica Download PDFInfo
- Publication number
- WO2021074469A1 WO2021074469A1 PCT/ES2020/070621 ES2020070621W WO2021074469A1 WO 2021074469 A1 WO2021074469 A1 WO 2021074469A1 ES 2020070621 W ES2020070621 W ES 2020070621W WO 2021074469 A1 WO2021074469 A1 WO 2021074469A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrical switchgear
- connection
- cables
- operating means
- unit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0358—Connections to in or out conductors
Definitions
- the present invention has its field of application in electrical energy generation facilities, such as wind farms where electricity is generated by wind energy or photovoltaic parks where electricity is generated by solar energy. Specifically, it is applicable in said generation facilities that comprise an electrical switchgear to perform the interconnection to the electrical energy distribution network, said electrical switchgear being equipped to perform the protection functions of the LV / MV transformer and connection to cables. medium voltage power generation facility.
- the electrical switchgear used to interconnect electrical power generation facilities, such as wind turbine towers or photovoltaic parks, to the electrical power distribution network is installed in usually metallic enclosures, called cells.
- These cells that comprise the electrical switchgear are of a modular type and depending on the configuration of the electrical network, the following modular units may be available:
- Lift unit made up of a cable entry to the main busbar of the cubicle, which may have the possibility of connecting to earth with an earthing switch.
- the line input to the downstream generating installation is carried out through this unit.
- Line unit with sectioning electrical switchgear for cutting and gas insulation, which may contain a load-break switch with three operating positions: connection - sectioning - grounding. The input or output of the line from the previous generating facilities is carried out through this unit, facilitating the operation and maintenance of the wind or photovoltaic park.
- Circuit-breaker protection unit electrical switchgear comprising a vacuum circuit-breaker with two operating positions: connection - cut-off, a disconnector with three operating positions: connection - sectioning - earthing, current transformers, etc.
- Modular metal cells or enclosures can be installed in electrical power generation facilities, such as inside wind turbine towers, inside an enclosure located next to the wind turbines or in enclosures of photovoltaic installations, etc. , where they are introduced through the door one by one and then coupled with one another inside the facilities.
- electrical power generation facilities such as inside wind turbine towers, inside an enclosure located next to the wind turbines or in enclosures of photovoltaic installations, etc. , where they are introduced through the door one by one and then coupled with one another inside the facilities.
- the topology or electrical scheme for connection to the electrical distribution network that is usually used is the so-called radial or aerial.
- the different generating stations are connected along various branches that arise from the HV / MV substation. These branches make up the facility and connect a series of generating facilities to each other.
- the wind turbines or photovoltaic panels are connected to the radial electrical scheme through their transformation center that comprises the aforementioned electrical switchgear.
- the reliability of wind farms or photovoltaic parks, the use of the wind or the sun and the availability and supply of energy to the grid are influenced by the reliability and repair time of the components and by the configuration of the electrical scheme itself. of connection.
- the lift unit may comprise an earthing switch that enables the downstream line section to be earthed to the next transformation center (for example, when there is a fault between two wind turbines, the affected area is isolated by earthing in both sides of the section of line), so that it is possible to work safely in case of having to act on said line to carry out fault repair or maintenance work.
- the lift unit comprises a modular cell or enclosure that is installed together with the rest of the modular metal enclosures inside electrical power generation facilities, such as the wind turbine tower, which which leads to the aforementioned drawbacks related to space.
- the circuit breaker protection unit is connected to the wind turbine transformer by means of cables that come from the same transformer, which can be in the upper or rear part of the installation, and that are connected to the wind turbine transformer. protection by a cable connection point included in the lower part of said unit. Due to the scarcity of space inside wind turbine towers or photovoltaic installations, this connection of cables through the lower part of the protection unit can have certain drawbacks, such as, for example, the difficulty of connecting the cables if it is complied with. with its minimum radius of curvature, a parameter that indicates the value to which a cable can be bent and that must be respected to avoid damage to the cable itself. Likewise, the cost referring to cables will be proportional to the meters of cable necessary to reach the cable connection point of the protection unit, this cost being lower the less the distance between the cable connection point of the unit. protection and the transformer of the generating installation.
- the invention refers to an electrical switchgear for application in electrical power generation facilities, such as wind or photovoltaic parks, specifically in generation units, such as, for example, wind turbine towers or photovoltaic facilities, which comprise their own transformation center equipped with electrical switchgear that is the object of the present invention. Therefore, from here on, each of the wind turbine towers or photovoltaic installations that comprise the electrical switchgear object of the invention will be understood as a generation unit.
- This electrical switchgear allows the connection of the generation units to the electrical distribution network, the electrical connection scheme may be of the radial or antenna type.
- the electrical switchgear may comprise at least one lift unit and a protection unit or it may comprise at least one lift unit, a line unit and a protection unit respectively. In both cases, all units are embedded in an enclosure, such as a metal enclosure, insulated in a dielectric fluid.
- the electrical switchgear of the invention comprises said enclosure that incorporates all the units inside, and may also comprise at least one cable connection point, one cable exit point and at least one maneuvering means that allows at least one of the following functions: connection-cut-off-grounding.
- an exemplary embodiment of the invention could comprise a cable exit point with the possibility of having a first maneuvering means such as an earthing switch that allows said outlet to be connected to earth, a second means of operation such as an automatic switch that allows to carry out protection, connection and cut-off functions, a third means of operation such as a switch-disconnector and earthing switch that allows to carry out connection, sectioning and setting functions to ground, and which is in series with the circuit breaker and fourth operating means, such as a load break switch that allows cutting, connecting, isolating and grounding functions. Therefore, the electrical switchgear of the invention incorporates in a single enclosure or module the units that in the state of the art are incorporated in several modules or enclosures, thus avoiding problems of space and installation inside the generation units such as for example wind turbine towers.
- a first maneuvering means such as an earthing switch that allows said outlet to be connected to earth
- a second means of operation such as an automatic switch that allows to carry out protection, connection and cut-off functions
- a third means of operation
- connection point for cables coming from the transformer of the generation unit, or upper connection is located, as its name indicates, in the upper part of the enclosure, thus achieving significant cable savings, since which shortens the length of cable necessary to connect said transformer with the electrical switchgear.
- installation of the cables becomes a simpler task since it does not imply the need for more space inside the generation unit, such as inside a wind turbine tower. It has been envisaged that said upper cable connection point can be covered by a casing, thus providing it with mechanical protection.
- the enclosure of the electrical switchgear also includes in its lower part another connection point for cables, or lower connection, coming from a previous generation unit, such as a previous wind turbine tower.
- Said enclosure can also be equipped on at least one of its sides with an exit point for cables directed towards the next generation unit, such as the next wind turbine tower, as well as with at least one connection element that allows the modular extension of the electrical switchgear, such as the coupling of an enclosure, measuring cell, auxiliary service cells or other functions of cutting, connection, sectioning and earthing.
- the cable entry points, the cable exit point and the connection elements refer to bushings that are selected from female type, male type and their combinations and that are accessible from the outside of the enclosure.
- the electrical switchgear object of the present invention may also comprise means of measurement, control and protection such as voltage sensors, voltage transformers, means for receiving / transmitting signals via PLC, means for detecting partial discharges, current sensors, etc.
- means of measurement, control and protection such as, for example, means that supply voltage and current values, such as, for example, inductive toroidal sensors for current measurement and resistive / capacitive sensors for voltage measurement, can be installed in the bushings.
- the enclosure comprises maneuvering means that make it possible to carry out connection, cut-off, sectionalization and grounding functions.
- the enclosure can comprise an automatic switch with two positions for maneuver, cut-off and connection, such as a vacuum automatic switch, which has the function of protecting the transformer of the generation unit.
- the enclosure comprises a first switch-disconnector and earthing switch with at least two operating positions, connection, sectioning and earthing, which once the circuit-breaker is open allows grounding and isolating the line coming from the generator unit transformer.
- the enclosure also includes a second earthing switch with two operating positions, open or earthed, which makes it possible to earthen or isolate the earth line that goes to a subsequent generation unit, for example, when there is a missing between two generation units, the affected area is isolated by grounding the line section on both sides.
- the enclosure also comprises a load break switch with three operating positions, connection, sectioning and grounding, which allows the line input from the, or previous generation units.
- the load cut-off switch can be operated via remote control, so that from a generation unit the operation order can be sent to a load cut-off switch installed in another generation unit, avoiding movements of operators from one generation unit to another and thus speeding up maintenance or repair work, the impact of said work on the energy transferred being the least possible.
- first switch-disconnector and earthing switch and the second earthing switch can be configured as a single operating means, that is, an earthing switch comprising at least a moving contact with rotary movement and that can electrically connect at least one pair of fixed contacts to each other, being able to connect the earth both of the line supply and of the derivation to the transformer.
- connection - cut-off is electrically connected with the connection point of cables coming from the transformer of the generation unit and with said rotary earthing switch, this being in turn Rotary earthing switch electrically connected to the three-position load-break switch (connection - sectionalization - earthing) and the latter electrically connected in turn to the connection point of cables coming from a generation or installation unit previous.
- the rotary earthing switch and the load cut-off switch are electrically connected with at least one cable exit point that goes to a generation unit or subsequent installation, and with at least one connection element that allows modular extension of electrical switchgear.
- Figure 1. Shows a single-line diagram of electrical switchgear according to the state of the art arranged in two generation units, such as two wind turbine towers.
- Figure 2. Shows a single-line diagram of the electrical switchgear of the invention arranged in several generation units, such as several wind turbine towers, according to a first preferred embodiment of the invention.
- Figure 3. Shows a single-line diagram of the electrical switchgear of the invention arranged in several generation units, such as several wind turbine towers, according to a second preferred embodiment of the invention.
- Figure 4a Shows an elevation view of the electrical switchgear of the invention according to figure 2 or 3 arranged inside an enclosure.
- Figure 4b Shows a right profile view of the electrical switchgear of the invention according to figure 2 or 3 arranged inside an enclosure.
- Figure 4c.- Shows a left profile view of the electrical switchgear of the invention according to figure 2 or 3 arranged inside an enclosure.
- Figure 1 shows the electrical switchgear (1) according to the state of the art, which, unlike the present invention, comprises an enclosure (8) for each of the units (2, 3, 9).
- Figures 2, 4a, 4b and 4c show an electrical switchgear (1) for application in electrical power generation facilities, specifically in generation units such as, for example, wind turbine towers (12, 13) that comprise their own transformation center equipped with said electrical switchgear (1).
- the electrical switchgear (1) object of the present invention comprises at least one lift unit (2) and a protection unit (3) incorporated inside an enclosure (8), for example metallic, and insulated in a dielectric fluid , such as a gas or a mixture of gases, for the case in which the electrical switchgear (1) corresponds to a wind turbine tower at the end or at the beginning of the power line, as shown in figure 2, such as example in an electrical diagram of the radial or antenna type.
- the electrical switchgear (1) comprises an enclosure (8), for example metal, which incorporates inside a lift unit (2 ), a line unit (9) and a protection unit (3) insulated in a dielectric fluid, such as a gas or a mixture of gases.
- the electrical switchgear (1) of the invention comprises said enclosure (8) that incorporates inside all the units (2, 3, 9), and also comprises at least one connection point (4, 10) of cables, at least an exit point (5) of cables and at least one means of maneuvering (6, 7, 11, 20) that allows to carry out the functions of connection, cutting, sectioning and grounding, as shown in figures 2 , 4a, 4b and 4c, the first operating means (20) being able to be an earthing switch, the second operating means (6) an automatic switch, the third operating means (7) a switch-disconnector and disconnector grounding device and the fourth operating means (11) a load cut-off switch.
- the upper connection point (4) of cables (25) coming from the wind turbine transformer (12, 13) is, as its name indicates, in the upper part of the enclosure (8), as shown in the Figures 2 and 3, and said upper connection point (4) of cables (25) may be covered by a casing (15), as shown in Figures 4a, 4b and 4c.
- the lower connection point (10) of cables coming from the electrical switchgear (1) of a generation unit (13) prior to the generation unit (12) is, also as its name indicates, at the bottom of the envelope (8), as shown in Figures 2 and 3, which can also be covered by a cover (24) as shown in Figures 4a, 4b and 4c.
- the envelope (8) is also provided in at least one of its sides with the exit point (5) of cables directed towards the next installation or generation unit, such as the next wind turbine tower, as shown in Figures 4a and 4c, as well as at least one connection element (14) that allows the modular extension of the electrical switchgear (1), such as, for example, the coupling of another measuring cell, as shown in figure 4b.
- the upper and lower connection points (4, 10) of cables, the exit point (5) of cables and the connection elements (14) can be bushings that are selected from female type, male type and their combinations and that are They are accessible from the outside of the casing (8), as shown in Figures 4a, 4b and 4c.
- the electrical switchgear (1) of the invention may comprise means of measurement, control and protection (22, 23), such as inductive toroidal sensors (22) for current measurement, voltage transformers (23) for the voltage measurement, etc., as shown in figures 2 and 3, which can be installed in the same bushings that comprise the upper and lower connection points (4, 10) of cables, the outlet point (5 ) of cables and / or in the connection elements (14) that are accessible from outside the casing (8) of the electrical switchgear (1).
- Figure 2 shows a single-line diagram of the electrical switchgear (1) arranged in several generation units (12, 13) according to a first preferred embodiment of the invention.
- the electrical switchgear (1) comprises maneuvering means (6, 7, 11, 20) with connection, cutting, sectioning and grounding functions, all of them arranged inside the same enclosure (8), thus including the lift unit (2) with the possibility of connecting ground, the line unit (9) and the protection unit (8) in a single modular enclosure (8), to which they can be attached if necessary other modular enclosures.
- the envelope (8) comprises a second operating means (6), such as a switch automatic vacuum with two maneuvering positions, connection - cut, which has the function of protecting the wind turbine transformer (12, 13).
- the enclosure (8) comprises inside the third maneuvering means (7) comprising a first switch-disconnector and earthing switch with at least two operating positions, connection - sectioning - earthing, which one Once the automatic switch of the second operating means (6) is open, it allows grounding and isolating the line coming from the wind turbine transformer (12, 13).
- the enclosure (8) also includes inside the first switching means (20) comprising a second grounding switch with two switching positions, connection - grounding, the which allows grounding and isolating the line that goes to a downstream wind turbine in the electrical connection scheme to the distribution network.
- the envelope (8) comprises inside it the fourth maneuvering means (11) comprising a load cut-off switch with three maneuvering positions, connection - sectioning - Grounding, which allows the line input from the previous wind turbine tower, or from the previous wind turbine towers.
- this shows a one-line diagram of the electrical switchgear (1) arranged in several wind turbine towers (12, 13) according to a second preferred embodiment of the invention.
- the envelope (8) instead of comprising the third maneuvering means (7) and the first maneuvering means (20), comprises a maneuvering means (21) comprising at least one movable contact (16) with rotary movement that can electrically connect to each other at least one pair of fixed contacts (17, 18, 19), so that it is a means of maneuvering (21) with three maneuvering positions, connection - putting into ground - grounding, that is, it allows connecting the wind turbine tower (12, 13) to the distribution network, isolating and grounding said wind turbine tower (12, 13), or isolating and grounding the line that it leaves towards a rear wind turbine tower, that is, although in said figure 3 the numerical reference (2) referring to the lift unit is not shown, which in the first preferred embodiment comprises a first maneuvering means (20) such as a disconnector grounding device, the maneuvering means (21) of
- the envelope (8) In addition to this switching means (21), it also comprises the second switching means (6), such as a two-position automatic vacuum switch, connection-cut, which has the function of protecting the wind turbine transformer (12, 13), and the fourth maneuvering means (11) comprising a load cut-off switch with three maneuvering positions, connection - sectioning - grounding, which allows the line input from the previous wind turbine tower, or from the previous wind turbine towers. Therefore, the second maneuvering means (6) is electrically connected with the upper connection point (4) of cables (25) and with the maneuvering means (21), said maneuvering means (21) being in turn electrically connected with the fourth operating means (11) and said fourth operating means (11) electrically connected in turn with the lower connection (10) of cables.
- the switching means (21) and the fourth switching means (11) are electrically connected to the cable exit point (5).
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL20817052.2T PL4047763T3 (pl) | 2019-10-14 | 2020-10-14 | Rozdzielnica elektryczna do instalacji do generowania energii elektrycznej |
EP20817052.2A EP4047763B1 (en) | 2019-10-14 | 2020-10-14 | Electrical switchgear for electric power generation installations |
ES20817052T ES2968609T3 (es) | 2019-10-14 | 2020-10-14 | Aparamenta eléctrica para instalaciones de generación de energía eléctrica |
CN202080084763.2A CN114788106A (zh) | 2019-10-14 | 2020-10-14 | 用于发电设施的电气开关设备 |
MX2022004446A MX2022004446A (es) | 2019-10-14 | 2020-10-14 | Aparamenta electrica para instalaciones de generacion de energia electrica. |
CONC2022/0004536A CO2022004536A2 (es) | 2019-10-14 | 2022-04-08 | Aparamenta eléctrica para instalaciones de generación de energía eléctrica |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201931678U ES1239274Y (es) | 2019-10-14 | 2019-10-14 | Aparamenta eléctrica para instalaciones de generación de energía eléctrica |
ESU201931678 | 2019-10-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2021074469A1 true WO2021074469A1 (es) | 2021-04-22 |
WO2021074469A8 WO2021074469A8 (es) | 2021-09-16 |
Family
ID=69062079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2020/070621 WO2021074469A1 (es) | 2019-10-14 | 2020-10-14 | Aparamenta eléctrica para instalaciones de generación de energía eléctrica |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP4047763B1 (es) |
CN (1) | CN114788106A (es) |
CO (1) | CO2022004536A2 (es) |
ES (2) | ES1239274Y (es) |
HU (1) | HUE065355T2 (es) |
MX (1) | MX2022004446A (es) |
PL (1) | PL4047763T3 (es) |
WO (1) | WO2021074469A1 (es) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0224051A1 (fr) * | 1985-10-30 | 1987-06-03 | Alsthom | Poste à hexafluorure de soufre pour commutation en charge |
DE102012215246A1 (de) * | 2012-08-28 | 2014-03-06 | Siemens Aktiengesellschaft | Druckfluidisoliertes Schaltfeld |
WO2014201475A1 (en) * | 2013-06-10 | 2014-12-18 | Viet Thong Ho | Ring main unit |
-
2019
- 2019-10-14 ES ES201931678U patent/ES1239274Y/es active Active
-
2020
- 2020-10-14 HU HUE20817052A patent/HUE065355T2/hu unknown
- 2020-10-14 WO PCT/ES2020/070621 patent/WO2021074469A1/es active Search and Examination
- 2020-10-14 ES ES20817052T patent/ES2968609T3/es active Active
- 2020-10-14 CN CN202080084763.2A patent/CN114788106A/zh active Pending
- 2020-10-14 MX MX2022004446A patent/MX2022004446A/es unknown
- 2020-10-14 PL PL20817052.2T patent/PL4047763T3/pl unknown
- 2020-10-14 EP EP20817052.2A patent/EP4047763B1/en active Active
-
2022
- 2022-04-08 CO CONC2022/0004536A patent/CO2022004536A2/es unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0224051A1 (fr) * | 1985-10-30 | 1987-06-03 | Alsthom | Poste à hexafluorure de soufre pour commutation en charge |
DE102012215246A1 (de) * | 2012-08-28 | 2014-03-06 | Siemens Aktiengesellschaft | Druckfluidisoliertes Schaltfeld |
WO2014201475A1 (en) * | 2013-06-10 | 2014-12-18 | Viet Thong Ho | Ring main unit |
Non-Patent Citations (4)
Title |
---|
ABB: "Multifunktionale Schaltanlagen PASS M00 72,5 kV Flexible und kompakte Schaltanlagen- Lösungen für windparks", 20 January 2013 (2013-01-20), XP055773110, Retrieved from the Internet <URL:https://library.e.abb.com/public/0a41739a155e5a20c1257b420029c42d/BR_HV-PASS-72-5_WF(DE)C_2GJA708616%2001.2013.pdf> [retrieved on 20210208] * |
LUCY ELECTRIC: "SABRE GIS Ring Main Unit up to 24kV with vacuum circuit breaker", 1 April 2019 (2019-04-01), XP055773321, Retrieved from the Internet <URL:https://lucyelectric-production-assets.s3.eu-west-2.amazonaws.com/2019/04/Sabre-_-3008-2.pdf> [retrieved on 20210208] * |
MESA ENERGY SOLUTIONS: "CAS secondary distribution switchgear (celdas de distribución secundaria)", 31 August 2011 (2011-08-31), pages 1 - 12, XP055773100, Retrieved from the Internet <URL:https://www.mesa.es/productos/pdf/0MESA-310%20CAS.pdf> [retrieved on 20210208] * |
SIEMENS AG: "Gas-Insulated Switchgear -Blue GIS Vacuum Circuit Breaker and Clean Air", 15 August 2019 (2019-08-15), XP055773101, Retrieved from the Internet <URL:https://construproductos.com/archivos/GISBLUE.pdf> [retrieved on 20210208] * |
Also Published As
Publication number | Publication date |
---|---|
EP4047763A1 (en) | 2022-08-24 |
ES1239274U (es) | 2020-01-03 |
ES2968609T3 (es) | 2024-05-13 |
HUE065355T2 (hu) | 2024-05-28 |
CN114788106A (zh) | 2022-07-22 |
EP4047763B1 (en) | 2023-11-15 |
PL4047763T3 (pl) | 2024-04-29 |
ES1239274Y (es) | 2020-03-24 |
CO2022004536A2 (es) | 2022-07-08 |
ES1239274U8 (es) | 2020-10-28 |
MX2022004446A (es) | 2022-05-02 |
EP4047763C0 (en) | 2023-11-15 |
WO2021074469A8 (es) | 2021-09-16 |
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