WO2017097308A1 - Centrale éolienne - Google Patents

Centrale éolienne Download PDF

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Publication number
WO2017097308A1
WO2017097308A1 PCT/DK2016/050413 DK2016050413W WO2017097308A1 WO 2017097308 A1 WO2017097308 A1 WO 2017097308A1 DK 2016050413 W DK2016050413 W DK 2016050413W WO 2017097308 A1 WO2017097308 A1 WO 2017097308A1
Authority
WO
WIPO (PCT)
Prior art keywords
turbine generators
wind turbine
group
wind
power plant
Prior art date
Application number
PCT/DK2016/050413
Other languages
English (en)
Inventor
Jesper Nielsen
Original Assignee
Vestas Wind Systems A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vestas Wind Systems A/S filed Critical Vestas Wind Systems A/S
Publication of WO2017097308A1 publication Critical patent/WO2017097308A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
    • F03D9/257—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor the wind motor being part of a wind farm
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1892—Arrangements for adjusting, eliminating or compensating reactive power in networks the arrangements being an integral part of the load, e.g. a motor, or of its control circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/388—Islanding, i.e. disconnection of local power supply from the network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • H02J3/472—For selectively connecting the AC sources in a particular order, e.g. sequential, alternating or subsets of sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/28—The renewable source being wind energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

Definitions

  • aspects of the present invention relate to a wind power plant for feeding power to an external power grid, and to a method for operating a wind power plant for feeding power to an external power grid.
  • Wind turbine generators of today are typically equipped with a protecting switchgear whereby the wind turbine generators may be individually connected to or disconnected from a power grid.
  • the switchgear is often positioned in the bottom of the tower of the wind turbine generators.
  • a wind power plant for feeding power to an external power grid
  • the wind power plant comprising one or more groups of wind turbine generators, each group comprising a plurality of wind turbine generators operatively connected to a common group switchgear of that group via an internal power grid of that group, and a wind power plant substation operatively connected to the common group switchgear of each of the respective groups, the wind power plant substation further being operatively connected to the external power grid.
  • the present invention aims at grouping wind turbine generators within a wind power plant.
  • a wind power plant comprising a total of 100 wind turbine generators may be divided into 20 groups each containing 5 wind turbine generators and a common group switchgear to which common group switchgear the 5 wind turbine generators are connected, i.e. the 5 wind turbine generators share the common group switchgear.
  • the common group switchgear of each of the groups replaces the switchgear of the individual wind turbine generators whereby the number of applied switchgears is reduced. From a cost perspective the reduced number of applied switchgear is advantageous.
  • the common group switchgear of each group is to be understood as a protecting and isolating power electronic device that may connect and/or disconnect a group of wind turbine generators to and/or from a power grid within the wind power plant via its controllable switches, fuses and circuit breakers.
  • a switchgear of a given group may be adapted to connect and/or disconnect that specific group to and/or from a power grid within the wind power plant.
  • the common group switchgear may be capable of operating at high-voltage levels, i.e. above 1 kV AC. Typical voltage levels of the internal power grid of the groups may be between 10 kV AC and 75 kV AC. A switchgear should also be capable of handling the total power levels of the wind turbine generators to which it is connected.
  • the wind power plant substation may comprise a substation switchgear.
  • the substation switchgear is to be understood as a protecting and isolating power electronic device adapted to connect and/or disconnect the complete wind power plant to and/to from an external power distribution grid, such as the main power grid.
  • a substation switchgear may provide an additional layer of protection in that it allows connection and/or disconnection of the complete wind power plant to and/or from for example the main power grid.
  • the substation switchgear and each group switchgear of the one or more groups of wind turbine generators may be independently controllable from a power plant controller (PPC).
  • the PPC may be configured to connect and/or disconnect the various groups of wind turbine generators in response to the amount of power (active and reactive) being required.
  • the PPC may be configured to connect and/or disconnect the groups of wind turbine generators in response to for example frequency and/or voltage support on the external power grid.
  • the PPC may take into account maintenance plans for the various wind turbine generators.
  • Each of the one or more groups of wind turbine generators may in principle contain any number of wind turbine generators. However, in most scenarios each group of wind turbine generators may comprise less than 20 wind turbine generators, such as less than 15 wind turbine generators, such as less than 10 wind turbine generators, such as less than 8 wind turbine generators, such as less than 5 wind turbine generators. It should be noted however that in case of relatively small wind turbine generators the number of wind turbine generators within a group may exceed 20.
  • the number of groups within a wind power plant may in principle be selected arbitrary.
  • the wind power plant may comprise less than 25 groups of wind turbine generators, such as less than 20 groups of wind turbine generators, such as less than 15 groups of wind turbine generators, such as less than 10 groups of wind turbine generators.
  • Each of the wind turbine generators may be connected to a switchgear, e.g. to the group switchgear, via at least one T-connector, such as three T-connectors, i.e. one T-connector for each phase.
  • T-connectors may be connected to each other and/or they may be connected to the switchgear.
  • a current sensor arrangement for measuring a current from each of the wind turbine generators may be provided. The current may be measured using current transformers.
  • the present invention relates to a method for operating a wind power plant for feeding power to an external power grid, the method comprising the steps of providing a wind power plant comprising one or more groups of wind turbine generators, each group comprising a plurality of wind turbine generators operatively connected to a common group switchgear of that group via an internal power grid of that group, and connecting and/or disconnecting a group of wind turbine generators to and/or from the external power grid by activating the group switchgear of that group of wind turbine generators, e.g. by activating only said group switchgear.
  • the connecting and/or disconnecting of a group of wind turbine generators may be controlled by the PPC.
  • the PPC may be configured to connect and/or disconnect the groups of wind turbine generators in response to the amount of power (active and reactive) required by for example a power distributor. Also, the PPC may be configured to connect and/or disconnect the groups of wind turbine generators in response to for example frequency and/or voltage support on the external power grid. Finally, the PPC may take into account maintenance plans for the various wind turbine generators.
  • the present invention relates to a group of wind turbine generators of a wind power plant, the group comprising a plurality of wind turbine generators operatively connected to a common group switchgear via an internal power grid of that group.
  • the wind power plant may comprise a plurality of groups of wind turbine generators.
  • the common group switchgear may be adapted to connect and/or disconnect that group to and/or from a power grid of the wind power plant.
  • the common group switchgear may act as a protecting and isolating power electronic device for the wind turbine generators of the group.
  • the group may comprise less than 20 wind turbine generators, such as less than 15 wind turbine generators, such as less than 10 wind turbine generators, such as less than 8 wind turbine generators, such as less than 5 wind turbine generators.
  • the number of wind turbine generators of a group may exceed 20.
  • FIG. 1 shows schematically an embodiment of a wind power plant according to the present invention
  • Fig. 2 shows schematically a further embodiment of a wind power plant according to the present invention
  • Fig. 3 schematically illustrates how the wind turbine generators are connected to the switchgear according to an embodiment
  • Fig. 4 schematically illustrates a method according to an embodiment of the present invention. While the invention is susceptible to various modifications and alternative forms specific embodiments have been shown by way of examples in the drawings and will be described in details herein. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed. Rather, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
  • the inventor of the present invention has understood that the total number of switchgears applied in prior art wind power plants is unnecessary high. The reason for this being that switchgears are positioned in both all the wind turbine generators as well as in the wind power plant substation. As switchgears in general are relatively expensive devices it would be advantageous if the number of switchgears within a wind power plant as a whole could be reduced. In one aspect of the present invention, one approach to achieve this is to remove the switchgears from the individual wind turbine generators.
  • An aim of the embodiments of the present invention is to provide a cost efficient arrangement of wind turbine generators within a wind power plant. The cost efficient arrangement allows for that the wind turbine generators forming a wind power plant do not require individual switchgears.
  • the embodiments of the present invention provide a cost effective arrangement of a plurality of wind turbine generators.
  • the embodiments of the present invention provide an arrangement of wind turbine generators where the number of applied switchgears is significantly reduced.
  • the embodiments of the present invention relate to a group of wind turbine generators of a wind power plant, the group comprising a plurality of wind turbine generators operatively connected to a common group switchgear via an internal power grid of that group.
  • common switchgear is meant a shared switchgear, which is shared between the wind turbine generators of that group.
  • the group switchgear is adapted to connect and/or disconnect that group to and/or from a power grid of the wind power plant.
  • the group may comprise less than 20 wind turbine generators, such as less than 15 wind turbine generators, such as less than 10 wind turbine generators, such as less than 8 wind turbine generators, such as less than 5 wind turbine generators.
  • Fig. 1 a group of wind turbine generators 100 according to an embodiment of the present invention is depicted. In the following a group of wind turbine generators will be denoted a mini wind power plant.
  • the mini wind power plant 100 comprises a total of three wind turbine generators 101, 102, 103 all connected to the same common group switchgear 105 via an internal power grid 104.
  • the internal power grid is typically a three-phase high-voltage power grid having a nominal voltage between 10 kV AC and 75 kV AC.
  • the common group switchgear 105 should thus be configured to operate at a similar voltage level.
  • the wind turbine generators 101, 102, 103 are adapted to convert wind energy into electrical energy.
  • the rated power levels of the wind turbine generators 101, 102, 103 may typically be from a few hundred kW to several MW.
  • the wind turbine generators 101, 102, 103 share the common group switchgear 105 which is connected to a substation switchgear 107 via the power line 106.
  • the common group switchgear 105 replaces the switchgears normally arranged within each of the wind turbine generators. Thus, none of the wind turbine generators 101, 102, 103 contain a switchgear.
  • the common group switchgear 105 should thus be capable of handling the total power level on the busbar side of the wind turbine generators 101, 102, 103.
  • a switchgear is a controllable power electronic device which via its controllable switches, fuses and circuit breakers is capable for protecting and isolating power electronic equipment, such as wind turbine generators in case of for example grid faults, maintenance of wind turbine generators etc.
  • the common group switchgear 105 serves as a protecting and isolating device for all three wind turbine generators 101, 102, 103.
  • the common group switchgear 105 may be prompted to isolate the wind turbine generators 101, 102, 103 in response to a measured current in the internal power grid 104.
  • the substation switchgear 107 is connected to the external power grid 109 via the power line 108.
  • the external power grid which may be the main power grid 109, may also be connected to other power generating facilities including other renewable power facilities (wind, solar, wave etc.), nuclear-based power facilities and coal-based power facilities.
  • the mini wind power plant 100 may be connected to or disconnected from the power line 106, and thereby the external power grid 109, using the common group switchgear 105. By implementing the mini wind power plant 100 as depicted in Fig. 1 the total number of applied switchgears are reduced from three to one. This reduction of the number of applied devices reduces the associated costs accordingly.
  • the inventor has estimated that for a mini wind power plant containing five 3.3 MW wind turbine generators the reduction of costs relating to the switchgears and the internal power grid may be as high as 80%.
  • the wind power plant 200 may in general comprise a plurality of groups of wind turbine generators, i.e. a plurality of mini wind power plants. Thus, the number of mini wind power plants may differ from two.
  • the mini wind power plant 201 comprises wind turbine generators 203, 204, 205 all feeding power to an internal power grid 206 which is connected to the common group switchgear 207.
  • the mini wind power plant 202 comprises wind turbine generators 208, 209, 210 all feeding power to internal grid 211 which is connected to the common group switchgear 212.
  • the number of wind turbine generators of each mini wind power plant may differ from the three wind turbine generators shown in Fig. 2. Also, the number of wind turbine generators may differ from one mini wind power plant to another mini wind power plant.
  • the nominal voltage level of the mini wind power plants 201, 202 is between 10 kV AC and 75 kV AC.
  • Each of the common group switchgears 207 and 212 are connected to the wind power plant substation switchgear 215 which, via power line 216, is connected to the external power grid 217.
  • the switchgears 207, 212, 215 should be capable of handling the relevant power levels.
  • the group switchgears of the mini wind power plants and the substation switchgear may be controlled independently.
  • the common group switchgears 207, 212 as well as the substation switchgear 215 may be controlled in an independent manner from for example the PPC. Similar to Fig. 1 the mini wind power plants 201 and 202 may be connected to or disconnected from the external power grid 217 using the common group switchgears 207 and 212, respectively.
  • the complete power plant 200 may be connected to or disconnected from the external power grid 217 using substation switchgear 215.
  • the common group switchgears 207, 212 serve as protecting and isolating power electronic devices for wind turbine generators 203-205 and 208-210, respectively, in that the common group switchgear 207 is adapted to connect and/or disconnect the mini wind power plant 201 to and/or from the power line 213.
  • the common group switchgear 212 is adapted to connect and/or disconnect the mini wind power plant 202 to and/or from power line 214.
  • each of the one or more mini wind power plants 201, 202 may comprise less than 20 wind turbine generators, such as less than 15 wind turbine generators, such as less than 10 wind turbine generators, such as less than 8 wind turbine generators, such as less than 5 wind turbine generators. Also, a wind power plant 200 may comprise less than 25 mini wind power plants, such as less than 20 mini wind power plants, such as less than 15 mini wind power plants, such as less than 10 mini wind power plants.
  • a current sensor arrangement may be provide, cf. Fig. 3.
  • the current sensor arrangement may comprise a current transformer for measuring the current from each of the wind turbine generators.
  • Fig. 3 shows one approach 300 where five wind turbine generators are connected to the common group switchgear 301 via power lines 311-315 and T-connectors 302-306.
  • Each of the T-connectors 302-306 comprises three T-connectors.
  • each wind turbine generator is connected to the common group switchgear 301 via three T-connectors, i.e. one T- connector for each phase.
  • the T-connectors 302, 303, 304 are mutually connected and connected to top bushing 307, whereas T-connectors 305, 306 are mutually connected and connected to top bushing 308.
  • bushings can be positioned differently.
  • one of the five wind turbine generators is connected to the common group switchgear 301 via power line 311 and T-connectors for each of its phases.
  • a series of current sensors 309, 310 measure the flow of current of power lines 311-315. The flow of current may be measured using current transformers.
  • the common group switchgear 301 is connected to a substation switchgear (not shown) via power line 316.
  • Fig. 4 shows, in a schematic manner, a method according to an embodiment of the present invention.
  • a new power reference active (P) and/or reactive (Q)
  • This new active and/or reactive power reference is then compared with the actual power reference for the active and/or reactive power.
  • the new power reference exceeds the actual power reference, i.e. additional power (active or reactive) is needed
  • at least one additional group of wind turbine generators i.e. at least one mini wind power plant, is/are connected to the wind power plant substation switchgear in order to increase the total amount of generated power.
  • the new power reference is lower than the actual power reference, i.e.
  • a smaller amount of power (active or reactive) is required.
  • at least one group of wind turbine generators i.e. at least one mini wind power plant, is/are disconnected from the wind power plant substation switchgear in order to lower the total amount of generated power.
  • a PPC may be configured to connect and/or disconnect the groups of wind turbine generators in response to the amount of power (active and reactive) required by for example a power distributor.
  • the PPC may be configured to connect and/or disconnect the groups of wind turbine generators in response to for example frequency and/or voltage support on the external power grid.
  • the PPC may take into account maintenance plans for the various wind turbine generators.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Wind Motors (AREA)

Abstract

La présente invention se rapporte à une centrale éolienne destinée à fournir de l'énergie à un réseau électrique externe, la centrale éolienne comprenant un ou plusieurs groupes de générateurs de turbine éolienne, chaque groupe comprenant une pluralité de générateurs de turbine éolienne raccordés de manière fonctionnelle à un appareillage de commutation de groupe commun de ce groupe par le biais d'un réseau électrique interne de ce groupe, et une sous-station de centrale éolienne raccordée de manière fonctionnelle à l'appareillage de commutation de groupe commun de chacun des groupes respectifs, la sous-station de centrale éolienne étant en outre raccordée de manière fonctionnelle au réseau électrique externe. La présente invention se rapporte également à un procédé associé permettant de faire fonctionner une centrale éolienne.
PCT/DK2016/050413 2015-12-09 2016-12-06 Centrale éolienne WO2017097308A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201570812 2015-12-09
DKPA201570812 2015-12-09

Publications (1)

Publication Number Publication Date
WO2017097308A1 true WO2017097308A1 (fr) 2017-06-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108376980A (zh) * 2018-02-09 2018-08-07 深圳大学 波能集群发电直流微电网系统实验平台
EP4013961B1 (fr) 2019-08-16 2023-05-10 EnBW Energie Baden-Württemberg AG Éolienne flottante comprenant une sous-station électrique intégrée
EP4362236A1 (fr) * 2022-10-31 2024-05-01 NKT Cables GmbH Connecteur de câble

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040010350A1 (en) * 2000-05-31 2004-01-15 Per-Anders Lof Distributed power generation system protection scheme
EP1993184A1 (fr) * 2007-05-14 2008-11-19 Siemens Aktiengesellschaft Procédé de démarrage d'au moins une partie d'une installation éolienne, installation éolienne et utilisation de l'installation éolienne
US20100033016A1 (en) * 2006-03-29 2010-02-11 Karin Thorburn System for Generating Electric Energy
EP2894753A1 (fr) * 2014-01-14 2015-07-15 Siemens Aktiengesellschaft Reconnexion d'une installation d'énergie éolienne à un réseau électrique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040010350A1 (en) * 2000-05-31 2004-01-15 Per-Anders Lof Distributed power generation system protection scheme
US20100033016A1 (en) * 2006-03-29 2010-02-11 Karin Thorburn System for Generating Electric Energy
EP1993184A1 (fr) * 2007-05-14 2008-11-19 Siemens Aktiengesellschaft Procédé de démarrage d'au moins une partie d'une installation éolienne, installation éolienne et utilisation de l'installation éolienne
EP2894753A1 (fr) * 2014-01-14 2015-07-15 Siemens Aktiengesellschaft Reconnexion d'une installation d'énergie éolienne à un réseau électrique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108376980A (zh) * 2018-02-09 2018-08-07 深圳大学 波能集群发电直流微电网系统实验平台
EP4013961B1 (fr) 2019-08-16 2023-05-10 EnBW Energie Baden-Württemberg AG Éolienne flottante comprenant une sous-station électrique intégrée
EP4362236A1 (fr) * 2022-10-31 2024-05-01 NKT Cables GmbH Connecteur de câble

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