Shore power connection device for connecting a vessel to a shore power supply network

Abstract

The invention relates to a shore power connection device (200) for connecting a vessel to a shore power supply network. The shore power connection device (200) has a connection unit (202) which is movable along a movement path (202) and is equipped with at least one plug connection element which can be connected to an associated plug connection element of the vessel, and can be connected to a shore power supply network by means of at least one connection line (210). The connection unit (202) is designed to be arranged in a trench (104), in particular in a cable shaft along the dock, and is designed so as to have a first immersed configuration in which it is arranged completely in the trench (104), and a second configuration (208) in which at least the plug connection element of the connection unit (202) projects out of the trench (104).

Description

[0001] PE / EJ Sept. 2025

[0002] Applicant: igus GmbH, 51147 Cologne

[0003] Shore power connection device for connecting a ship to a shore power supply network

[0004] The present disclosure relates generally to the technical field of shore power supply for ships and in particular to a shore power connection. The term "shore power connection" (English: shore power outlet) refers in particular to a connection option that is easy to connect and disconnect (e.g., by means of connectors such as a plug or socket) to which at least one supply line or supply cable can be connected in a manner that is easily detachable.

[0005] The invention relates to such a shore power connection device for connecting a ship to a shore power supply network.

[0006] The IEC / IEEE 80005 standard is designed to enable different ships to connect to high voltage shore power connections (HVSC) at different berths with as little adaptation and adjustment as possible to different locations.

[0007] The invention is primarily intended for such supply connections in ports, i.e., in particular for high-voltage shore connection (HVSC) systems, as defined in standard IEC / IEEE 80005, and is intended to be particularly suitable for an HVSC system according to IEC / IEEE 80005-1:2019. The invention thus relates in particular, but not exclusively, to a shore power connection designed and configured for multi-phase voltage supply at a minimum of 6.6 kV or 7.2 kV, typically with a minimum connection capacity of 2 MVA (megavolt-amperes).

[0008] The EMSA guide to onshore power supply for

[0009] Port authorities / administrations (European Maritime Safety Agency: Shore-Side Electricity - Guidance to Port Authorities and Administrations, Part 2 - Planning, Operations and Safety, Version 2, August 2022 - see Chapter 9) explains various safety requirements for shore power supply, including requirements for the ship-shore interface and the cable management system (CMS) used therein.

[0010] There is an increasing requirement for ships to connect to shore power while in port and to switch off their onboard generators, particularly to reduce emissions and protect the environment. Supplying ships with electrical power from the shore (shore power), also known as shore power, is known by various terms (e.g., Alternative Maritime Power (AMP), Onshore Power Supply (OPS), Shoreside Electricity (SSE)), and is historically sometimes referred to as "cold ironing" in English.

[0011] Ships in port still require electrical energy to operate their onboard systems, for cooling, charging batteries, etc. For this purpose, the ship can be connected to a shore power supply network so that the ship's generators can be switched off, thus reducing, for example, the emission of harmful exhaust gases.

[0012] Connection units, to which a ship's soapy plug can be connected for connection to the shore power supply network, are usually located on the quay wall near the ship berths.

[0013] Such connection units require a certain amount of space on the quayside both when in operation (i.e., when a ship is connected to them) and when not in use, and can thus pose an obstacle to port vehicles, dockworkers, etc. Known devices of this type are described, for example, in DE 10 2015 117 187 Al and in DE 10 2022 103 342 Al (WO2023 / 151761 Al). These connection units also represent undesirable obstacles on the quayside surface, particularly when not in use. For example, a collision between a port vehicle and the connection unit could occur, resulting in damage to the unit.

[0014] Furthermore, WO 2012 / 116919 Al discloses a supply system with a rail-guided carriage connected to an energy chain that can move within a shaft sunk into the quayside. While this provides a largely protected route for the cable, collisions between a port vessel and the connection unit cannot be ruled out, at least when this supply system is in operation. Although the supply system includes a parking space for the carriage sunk into the quayside, there is still potential for improvement.

[0015] A primary objective of the invention is therefore to propose a further development of a shore power connection device that reduces the risk of collisions on the quayside. Furthermore, it is desirable to better protect the shore power connection device from damage caused by external influences.

[0016] This problem is solved by a shore power connection device according to claim 1, by a shore power connection device according to claim 2, by a system according to claim 11, and also by a method or use according to claim 14. Thus, a shore power connection device for connecting a ship to a shore power supply network is provided, which significantly increases safety in the port. For example, the risk of collision between the connection unit and port vehicles is reduced (e.g., prevented when no ship is connected).

[0017] A shore power connection device is proposed for

[0018] Connecting a ship to a shore power supply network, the

[0019] comprising a shore power connection device: a connection unit with at least one plug connection element (e.g. with a socket) which can be connected to an associated plug connection element (e.g. with a plug) for supplying the ship and which can be connected or is connected to the shore power supply network by means of at least one connection cable in order to connect the ship to the shore power supply network.

[0020] According to a key concept of the invention, the connection unit is designed for placement in a trench, in particular a cable duct at the quayside, and is configured such that the connection unit has a first submerged configuration or setting in which it is completely submerged in the trench and can be moved safely within the trench, particularly in a trench completely covered with cover plates. This seemingly simple design offers several advantages, including improved protection of the connection unit and the connecting cable, prevention of collisions on the quayside surface, and a simplified construction, e.g., without a hinged cover, resulting in an energy-efficient and quiet process, as demonstrated by a comparison with the prior art, in particular from DE 10 2022 103 342 A1 (WO2023151761A1).

[0021] In other words, a key concept is that the connection unit is arranged in a trench, which can be covered by a cover consisting of several removable cover elements, and that the connection unit can be moved within the trench and beneath the cover along a travel path. This allows, among other things, the aforementioned advantages to be achieved.

[0022] Furthermore, the connection unit can preferably have a second configuration or setting in which at least the plug-in element of the connection unit protrudes from the trench, particularly vertically. In the second configuration, and especially only in the second configuration, certain selected parts of the connection unit, at least one plug-in element, protrude from the trench to facilitate the connection of the supply lines, and are thus in a different position than in the first, submerged configuration. The design with a second position makes it easier for the operating personnel to make the plug connections despite relatively heavy cables. In addition, the second configuration can be used to prevent unintentional movement of the connection unit, for example, by suitable control technology.

[0023] The connection unit is designed to be movable back and forth along a travel path or direction, particularly horizontally. In this respect, the connection unit can also be described as a movable connection box for shore power supply.

[0024] The term "configuration" refers in particular to a state intended for use, in which the components of the connection unit occupy a defined or predetermined relative position to one another, or are arranged in a defined or predetermined relative position to one another. A configuration thus corresponds in particular to a specific setting of the connection unit. In the second configuration, the connection unit can, in particular, protrude at least partially vertically from the trench. It is advantageous if the connection unit maintains a relative arrangement of its components to the trench that is at least predominantly or completely consistent between the first and second configurations with respect to the longitudinal and transverse directions, or horizontally.In both the first and second configurations, the connection unit is preferably arranged, particularly when viewed transversely to the direction of travel, at least predominantly within the corresponding transverse extent of the trench. In the second configuration, the connection unit can also be arranged or remain largely, and in particular to a predominant extent, within the trench in this configuration. Between the first and second configurations, the connection unit preferably changes its vertical dimension, or in particular, only its vertical dimension.

[0025] In both configurations, the connection unit is preferably supported on the bottom of the trench or on a supporting structure arranged therein, e.g. with support rails or the like.

[0026] In the first configuration, the connection unit is preferably fully retracted or submerged in the trench, or positioned below the surface where the trench is located. Designing the connection unit in this first configuration allows the trench to be completely covered, for example, with manually removable cover plates, a Panzerbelt®, or similar materials, so that, for instance, port vehicles can drive over the trench and people can walk across it. This not only provides an unobstructed route for port vehicles but also protects the shore power connection device by preventing collisions. In certain ports, such as cruise ship ports, the quay is publicly accessible, especially when no ship is docked.For such ports, it is particularly advantageous if the connection unit can be completely submerged in the trench, thus protecting and inaccessible its components.

[0027] In the first configuration, the connection unit can therefore, after being installed in the trench as intended, remain in a protected parked position for periods of non-use, in particular in a position completely submerged below the quay surface.

[0028] In the first configuration, the connection unit, when installed as intended in the trench, is particularly well protected during transport, for example, between a parking position and a desired supply position next to a ship. The connection unit can be stored and moved within the trench, which is completely covered with cover plates. This also prevents any collisions during transport, for example, with the transfer vessel being connected or other port vessels.

[0029] In one embodiment, the shore power connection device has at least one energy supply chain for guiding the at least one system-side connection cable, wherein the energy supply chain is arranged such that, when the connection unit is arranged in the trench, it is in the first

[0030] configuration and in the second configuration of the

[0031] The connection unit is completely positioned in the trench.

[0032] This also allows the energy supply chain to be completely located in the trench, thanks to the design of the shore power connection device, and thus protected from damage.

[0033] In one embodiment, the connection unit has a movable component, e.g. a support arm or the like, on which the at least one plug connection element is arranged and which is movable between the first configuration and the second configuration, e.g. in a vertical direction or in a vertical plane.

[0034] The movable component can include a pivoting arm which is pivotable in the vertical direction, so that when the connecting unit is arranged in the trench, the pivoting arm is completely in the trench in the first configuration and at least partially protrudes from the trench in the second configuration.

[0035] In the second configuration, part of the moving component can remain in the trench, thereby increasing the protection of the shore power connection device during operation. This also increases the stability of the shore power connection device.

[0036] Several movable components, each with multiple connector elements or connectors (e.g., sockets), can be provided. For example, a first pivotable arm about a first pivot axis can be provided, and the connection unit can further have a second pivotable arm on which at least one second connector element (e.g., a socket) is arranged. If the connection unit is in the first configuration, the first pivotable arm can pivot in a first direction about a first pivot axis, and the second pivotable arm can pivot in a second direction opposite to the first pivot direction about a second pivot axis. The connector elements can be connected to, or are connected to, the shore power supply network, in particular via the energy chain. The connector element is connected to an associated or corresponding connector element (e.g., a socket).(with a plug) to supply the ship with power. The corresponding ship-compatible connector can be attached to a supply line carried by the ship (typical for container ships) or to a supply line provided at the port, which is, for example, carried by a cable handling vehicle with a hoist and can be lifted by the hoist to the ship. For cruise ships, port-based transfer vehicles are typically used, which carry the supply lines. The shore power connection device can be used to connect the supply lines of the transfer vehicle to the shore power supply network, with the other end of the transfer vehicle's supply lines being connected to the ship.

[0037] The connector element is preferably a connector unit, e.g., a socket, which is splash-proof, preferably according to protection class IP67 or higher. At least one connector element can be designed and configured, in particular, as a junction box for an HVSC system according to IEC / IEEE 80005-1:2019, and / or, in particular, according to the requirements of DIN EN IEC 62613-1 and DIN EN IEC 62613-2.

[0038] The shore power connection device can include an actuator (e.g., electrical) for extending the movable component, e.g., for pivoting the first pivoting arm and the second pivoting arm. The components, e.g., the first pivoting arm and the second pivoting arm, are preferably operable independently of each other, e.g., pivotable.

[0039] In this way, either the first or the second pivoting arm can be extended out of the trench as needed, while the other pivoting arm remains in the trench and is thus protected from damage. This also allows for the selective provision of different power supply options. Preferably, the at least one connector is located at the free end of the moving component, e.g., at one end face of the pivoting arm. When using components arranged in opposite directions, a connector for connecting the vessel to the shore power supply network can be provided in both longitudinal directions of the trench, e.g., for greater flexibility regarding the relative arrangement of the vessel and the shore power connection device. Alternatively, the connector and its mountings, or the components supporting them, can also be oriented towards each other.

[0040] The connection unit is particularly preferred when it is arranged in the trench and, in the first configuration, is movable within and along the trench, e.g., guided by rails or laterally. For this purpose, the connection unit preferably has an integrated chassis, e.g., with wheels that roll directly on the trench bottom or with rollers or wheels that roll supported by rails of a support structure in the trench.

[0041] The connection unit can be moved underground (embedded in the quayside) or within a covered trench. At a variety of locations where the ship might be, it can then be transferred to the second configuration, allowing the ship to be connected to the shore power supply network via at least one plug connector, regardless of the ship's exact position along the route. The underground method prevents collisions with other objects, particularly during the movement of the connection unit. It also prevents damage to the shore power connection device from external objects or obstructions. A further advantage of the underground method is that the covers are not operated by the connection unit during the movement process.The connection can be folded up and then folded down again. This reduces wear, noise emissions, and energy consumption. Furthermore, this simplifies and reduces the cost of the shore power connection device. Preferably, the shore power connection device has a chassis that allows the connection unit to be moved within and along the trench when it is in the trench in its first configuration.

[0042] In a preferred embodiment, two counter-rotating energy supply chains are provided and attached to opposite sides of the connection unit, in particular its chassis.

[0043] For high electrical power outputs and / or a choice of power supply type, a movable component with at least two connector elements may be provided, in particular two swing-out components, each with at least two connector elements. Additional connectors for other power supply types or connections may also be provided, e.g., grounding connectors, and also for data connections, e.g., via optical fibers or the like, including for safety-relevant data connections of the HSVC power supply system, and / or for a wired internet connection of the ship.

[0044] The connection unit thus allows for a wide variety of connector configurations.

[0045] The energy chain supplying the connection unit can be designed so that, when the connection unit and the energy chain are positioned in the trench, it is completely submerged at every position to which the connection unit can move. This protects the energy chain from damage at all times. A deflection axis of the energy chain can run horizontally, meaning the energy chain can move in an approximately vertical plane. This allows for a comparatively narrow trench design. Alternatively, the energy chain can be arranged to move laterally, for example, if a shallower trench depth is required and the cables need a correspondingly large deflection radius.

[0046] A system is also proposed that includes a shore power connection device according to one of the preceding examples and the trench, wherein the shore power connection device is arranged in the trench.

[0047] The trench can be constructed, for example, of concrete in the seabed of the quay, similar to a cable duct. Preferably, the trench is made of precast concrete elements arranged in succession along the length of the quay. However, the trench can also be designed and arranged differently, for example, as a guide channel on the water side of a quay, e.g., at the end of the quay wall. The term "trench" is not limited to a cable duct. Preferably, however, it refers to a trench embedded in the seabed of the quay. The trench is preferably located on the side of the mooring bollards facing away from the water and preferably runs parallel to the quay wall and essentially horizontally.

[0048] The shore power connection device and the trench can be configured such that the trench can be covered, at least predominantly, and in particular completely, by means of one (or more than one) cover when the shore power connection device is in the first configuration. The cover comprises trench cover elements.

[0049] Trench cover elements made of a composite plastic material are preferred in the system because they are lightweight and durable, particularly corrosion-resistant, even in port environments. Their lightweight design allows for easy removal by personnel. Trench cover elements made of fiber-reinforced plastic are preferred. GRP composite cover elements are especially preferred for closing the trench, particularly monolithic or one-piece GRP composite covers (GRP = glass fiber reinforced plastic). Each trench cover element preferably has a load-bearing capacity of at least 1.5 tons.

[0050] In the assembled state or in the system, the trench is closed by means of successive, preferably hingeless or loosely placed trench covers, whereby only those covers are removed at the desired loading position which allow the connection unit to be moved into the second configuration.

[0051] In a preferred embodiment, the shore power connection device can be located entirely underground, and the cover can, for example, also provide a roadway for port vehicles and / or a pedestrian walkway for people (e.g., dockworkers, passengers, etc.) or constitute all or part of its surface. Furthermore, in the first configuration, the shore power connection device is protected from collisions with other objects at the port.

[0052] It is also specifically proposed that a shore power connection device, as described in one of the examples provided, be used to supply a ship. This shore power connection device is designed and configured for the on-demand electrical connection of the ship's electrical system, particularly a container or cruise ship, to a shore-based power supply network. It is specifically designed and configured for multi-phase voltage supply at a minimum of 6.6 kV or 7.2 kV and / or a minimum connection capacity of 2 MVA.

[0053] The connection unit can be completely recessed in a trench when the shore power connection device is in the first configuration and not supplying a ship. Conversely, the connection unit only protrudes partially from the trench when the shore power connection device is in the second configuration, in which the ship is connected to the shore power grid.

[0054] This better protects the shore power connection device from damage and improves the overall safety of a port facility with shore power supply.

[0055] The following detailed description refers to the accompanying drawings, which form part thereof and in which specific embodiments are shown for illustration. Further features and advantages will become apparent from the description below. Figures 1A to 1IE each show a system with a shore power connection device for connecting a ship to a shore power supply network according to various embodiments;

[0056] FIG.2A and FIG.2B: a shore power connection device for connecting a ship to a shore power supply network according to various embodiments;

[0057] FIG.3: a perspective view of a transfer vehicle with lifting equipment for handling the supply lines for a cruise ship, the lines being connected to a shore power connection device according to FIG.1-2;

[0058] FIG.4: a block diagram of an HVSC system for container ships according to standard IEC / IEEE 80005-1:2019 as a preferred application of the shore power connection according to the invention;

[0059] FIG. 5: Illustrates in a schematic perspective view how the shore power connection device, in particular the connection unit from FIG. 1-2, can be moved within the trench under a cover;

[0060] FIG.6A-6B: show further details of a shore power connection device according to FIG.1-2;

[0061] FIG.7A-7B: show the construction of a support structure of the mobile connection unit from FIG.1-2; and

[0062] FIG.8: an alternative embodiment of the connection unit from FIG.1-2, with components facing each other or plug connection element for connection to the supply lines on a transfer vehicle.

[0063] FIG.1A to FIG.1E each show a system 100 with a shore power connection device 200 for connecting a ship to a shore power supply network according to various embodiments.

[0064] System 100 can include a trench 104, which extends along (e.g., parallel to) a quay wall 102 at a port (e.g., in the direction of 101) and runs essentially horizontally. The shore power connection device 200 described herein can be configured to be located in the trench 104. For example, the shore power connection device 200 can be located in the trench as intended and be movable therein in a fully submerged configuration.

[0065] The shore power connection device 200 can have a connection unit 202. This connection unit 202 can have at least one plug connection element 204. A ship berthed at the quay wall 102 can have a corresponding or compatible plug connection element. Once the plug connection between the at least one plug connection element 204 of the connection unit 202 and the corresponding plug connection element of the ship is established, the ship can be connected to the shore power supply network by means of at least one connection cable 210 connected to the at least one plug connection element 204.

[0066] A connector element, as used herein, can be one of two elements for forming an electrical plug connection. The at least one connector element 204 of the connection unit 202 and the associated connector element of the ship can be designed or configured in accordance with standard IEC / IEEE 80005-1:2019 and / or, in particular, in accordance with the requirements of DIN EN IEC 62613-1 and DIN EN IEC 62613-2.

[0067] Preferably, the at least one connector element 204 is designed as a socket and the associated connector element for supplying the ship can be designed as a compatible plug.

[0068] The vessel (not shown, see FIG. 4) can be any type of vessel that can be connected to the shore power supply network. The shore power connection device 200 is then designed and configured for the on-demand electrical connection of the onboard electrical system of the moored vessel and the shore power supply network, in particular for multi-phase voltage supply at a minimum of 6.6 kV or 7.2 kV and / or at a minimum connection capacity of 2 MVA. The shore power supply network can therefore, for example, be such a medium-voltage network and has a structure known per se (see FIG. 4).

[0069] The shore power connection device 200 can be designed specifically for a cruise ship according to Annex C of standard IEC / IEEE 80005-1, or for a container ship, see for example Annex D of standard IEC / IEEE 80005-1. The container ship can also be any other cargo vessel. Other vessels are also suitable, e.g., ferries of any type (see Annex B or Annex G of standard IEC / IEEE 80005-1).

[0070] At least part of the shore power connection device may be equipped with movable components to change its configuration. For example, the connection unit 202 may be adjustable to at least a first configuration 206 and a second configuration 208.

[0071] The shore power connection device 200 can be arranged such that in the first configuration 206 it is completely located in the trench 104 (see for example FIG.1A and FIG.1B).

[0072] This allows the shore power connection device 200, if no ship is to be connected to the connection unit 202, to be arranged underground in the first configuration 206 (i.e., under a surface 106 of the quay) and thus protected (e.g., from a collision with a port vehicle). The trench 104 can also be covered (e.g., completely) by one or possibly several covers consisting of cover elements 108, in order to provide a roadway for port vehicles and a pedestrian walkway for people (e.g., dockworkers, passengers, etc.). This provides additional protection for the shore power connection device 200.

[0073] The cover elements 108 can, for example, be cover plates that are loosely and removablely placed on the upper opening of the trench. The one or more cover elements 108 can be made of any suitable material, preferably a fiber-reinforced plastic, e.g., GRP composite cover plates. The trench 104 can be constructed of precast concrete elements 109 arranged longitudinally, e.g., parallel to the quay wall, with a suitable cross-section, as shown in FIGS. 1A-1D, which form a suitable recess for the cover elements 108.

[0074] The shore power connection device 200 can also be configured such that in a second configuration 208 at least one plug connection element 204 of the connection unit 202 protrudes from the trench (see for example FIG. IC, FIG. IE).

[0075] In a visual representation, the shore power connection device 200 can have a movable component 212 on which the at least one plug connection element 204 is arranged and which is movable between the first configuration 206 and the second configuration 208, e.g. in a vertical direction 105.

[0076] In the port area, ships of varying lengths and / or at different berths can moor. Therefore, the location where shore power is to be provided, i.e., the desired connection point for a ship to the shore power grid, can vary.

[0077] The shore power connection device 200 can be configured such that it is movable within the trench 104 (e.g., at least in the first configuration 206). Visually, the shore power connection device 200 can be immersed within the trench 104 (i.e., in the first configuration 206) and movable along the trench 104 (i.e., in the direction of 101). For example, the shore power connection device 200 can be guided along rails within the trench 104. Visually, the shore power connection device 200 can be guided along the trench 104. Therefore, the trench 104 can also be referred to as a guide trench.

[0078] This allows the shore power connection device 200, in its first configuration 206, to be moved underground in the trench 104 (covered, for example, by one or more covers 108) and, at the location of the ship, to be transferred (after removing at least one cover element 108) to the second configuration 208, so that the ship can be connected to the shore power supply network by means of at least one plug connection element 204. In this way, safety at the port is significantly increased when the shore power connection device 200 is moved, since a

[0079] Collisions with other objects, such as port vehicles, dockworkers, etc., are prevented.

[0080] For example, the shore power connection device 200 can be moved in the trench 104 over a distance of more than 100 meters (m), e.g. more than 200 m, e.g. also more than 300 m, etc.

[0081] FIG. 2A shows a side view and FIG. 2B shows a top view of an exemplary embodiment of the shore power connection device 200. In FIG. 11, this exemplary embodiment of the shore power connection device 200 is shown in a side view as part of a system 100 (i.e., when the shore power connection device 200 is inserted into the trench 104). FIG. 1E shows a perspective view of it when the shore power connection device 200 is in the second configuration 208.

[0082] The shore power connection device 200 can have at least one energy chain 214 for guiding the at least one connection cable 210. The connection cable 210 can, for example, be guided from the shore power connection device 200 by means of the energy chain 214 along the ground side of the trench 104 and thus run along the ground.

[0083] The energy supply chain 214 can accommodate and route not only the connection lines for electrical power supply but also other lines, e.g., lines for supplying other utilities. The shore power connection device can then be additionally configured for connection to such utility supplies, e.g., drinking water.

[0084] The at least one energy chain 214 can be configured such that, when the shore power connection device 200 is positioned in the trench 104, it is completely located in the trench 104 in every configuration of the shore power connection device 200 (i.e., in both the first configuration 206 and the second configuration 208). The at least one energy chain 214 can also be configured such that it is completely located in the trench 104 at every position to which the shore power connection device 200 can be moved (along the trench 104 in the direction 101), regardless of the configuration of the shore power connection device 200. In this way, the energy chain 214 can be protected from damage at all times.

[0085] According to various aspects, as shown in the figures, a bending axis of the at least one energy chain 214 can run in a horizontal direction (i.e., parallel to direction 101). The figures show the upper and lower runs of the at least one energy chain 214. The upper run of the at least one energy chain 214 can be connected to the connection unit 202, and the lower run can be connected to the shore power supply network. As explained above, the at least one energy chain 214 can be configured such that, in any configuration of the shore power connection device 200 and at any position to which the shore power connection device 200 can be moved, the upper run is located below the surface 106 of the harbor or quay (i.e., within the trench 104).

[0086] The movable component 212 can be any type of element that is movable in the vertical direction 105. The shore power connection device 200 can also have several movable components 212. In this case, each movable component 212, or each of the several movable components 212 or elements, can have at least one plug-in connector 204.

[0087] In the exemplary embodiment shown in FIG.2A and FIG.2B, the shore power connection device 200 has a first movable component 212-1 and a second movable component 212-2.

[0088] The first movable component 212-1 can be designed as a first pivotable arm which is pivotable in the vertical direction 105, so that in the first configuration 206 the first pivotable arm is completely located in the trench 104 (see for example FIG. ID) and in the second configuration 208 protrudes at least partially from the trench 104 (see for example FIG. ID and FIG.1E).

[0089] The second movable component 212-2 can be designed as a second pivotable arm which is pivotable in the vertical direction 105, so that in the first configuration 206 the second pivotable arm is completely located in the trench 104 and in the second configuration 208 protrudes at least partially from the trench 104 (see for example FIG. ID and FIG. IE).

[0090] To illustrate, the first movable component 212-1 can have a first lifting mechanism (e.g. a first pivoting mechanism) and the second movable component 212-2 can have a second lifting mechanism (e.g. a second pivoting mechanism).

[0091] Depending on various aspects, the first swivel arm and the second swivel arm can swivel independently of each other. For example, the shore power connection device can have 200 additional configurations in which either the first swivel arm or the second swivel arm protrudes at least partially from trench 104. In this way, for instance, either the first or the second swivel arm can be extended out of the trench, while the other swivel arm remains in the trench and is thus protected from damage.

[0092] If the shore power connection device 200 is in the first configuration 206, the first pivoting arm 212-1 can be pivoted in a first pivoting direction about a first pivoting axis (parallel to direction 103) and the second pivoting arm 212-2 can be pivoted in a second pivoting direction opposite to the first pivoting direction about a second pivoting axis (parallel to direction 103).

[0093] The at least one connector element 204 can be arranged on an end face of the first pivoting arm 212-1, and the at least one second connector element arranged on the second pivoting arm 212-2 can be arranged on an end face of the second pivoting arm 212-2. In this way, in conjunction with the opposing pivot directions, a connection for connecting a ship to the shore power supply network can be provided in both longitudinal directions (101) of the trench 104 (e.g., optionally). This provides, for example, greater flexibility regarding the relative arrangement of the ship and the shore power connection device.

[0094] The shore power connection device 200 can have a first (e.g. hydraulic or electric) actuator 216-1 for moving the first swiveling arm 212-1 and / or a second (e.g. hydraulic or electric) actuator 216-2 for moving the second swiveling arm 212-2.

[0095] A control system for controlling the shore power connection device 200 (e.g. for moving the first swiveling arm 212-1 and / or the second swiveling arm 212-2) can be arranged in a housing 218.

[0096] The shore power connection device 200, in particular the connection unit 202, can, for example, include a carriage 220 (Engi, “carriage”) or be designed as a mobile carriage which can be moved along the trench 104.

[0097] For this purpose, the system 100 can provide a suitable track in the trench 104, and the carriage 220 can have a corresponding chassis (e.g., comprising wheels, rollers, etc.). In an exemplary embodiment, the system 100 can have rails in the trench 104, and the shore power connection device 200 can have wheels 221 by means of which the carriage 220 can be moved along the rails 701 (see FIG. 7A-7B).

[0098] To illustrate, the rails can be firmly anchored to the bottom of the trench 104 and the shore power connection device 200, in various configurations, only moves its movable components.

[0099] The shore power connection device 200 can be moved by means of its own drive (e.g. one or more than one electric motor 222) or by means of an external drive (e.g. by means of a cable pull attached to the shore power connection device).

[0100] FIG. 3 shows, purely by way of example, a transfer vehicle 300 with a lifting device 320, e.g., a rotatably mounted telescopic arm or articulated arm, for handling several electrical supply lines 340 for a cruise ship 360. The supply lines 340 are connected on one side to a shore power connection device 200 according to FIG. 1-2, and on the other side to the onboard electrical system of the cruise ship 360. The transfer vehicle 300 facilitates the handling of the heavy supply lines 340, in particular their lifting to the cruise ship 360. FIG. 3 also shows a variety of trench cover elements 350, in particular monolithic GRP trench cover plates, for covering the trench 304. The trench cover elements 304 are removable, in particular easy to open, and for this purpose preferably placed loosely or without hinges on the trench.

[0101] Shore power, as used here, refers to electrical current transferred from a shore-based power supply to a ship, regardless of the type of ship or the purpose of the supply. High voltage, in the context of an HVSC system, is defined as a nominal system voltage in the range of 1 kV up to and including 15 kV, or higher. The nominal voltage is typically 5 kV and, depending on the ship, may be, for example, 6.6 kV, 7.2 kV, or 11 kV. The proposed shore power connection is particularly advantageous for use in an HVSC system, especially for container ships, but not exclusively for this purpose. The shore power connection device 200 will be referred to below simply as the shore power connection.

[0102] By way of example, the basic structure and operation of a typical HVSC system for container ships will be explained with reference to the block diagram in FIG. 4. Such a system can be divided into two sections. The left section of the diagram in FIG. 4 (to the left of the dashed line) comprises the shore-side section of the shore power supply system, which receives the shore power and delivers it to the ship (not shown). The right section in the diagram from FIG. 4 comprises the onboard distribution network on the ship's deck. The two sections are connected via a shore power connection, which is part of the shore-ship interface, typically in the form of a CMS (see block 6 at the bottom of FIG. 4).

[0103] FIG. 4 shows Block 1, a shore-side connection to a power grid, e.g., the local utility company, which supplies the port or container terminal. Block 2 represents a shore-side shore power transformer and a conversion system that transforms the shore power voltage into a desired supply voltage for the ship, typically e.g., 6.6 kV or 11 kV. Block 2 may also include a frequency converter to provide the desired AC frequency, e.g., 50 Hz or 60 Hz. Block 3 designates a shore-side protective circuit that controls protective devices in a switchgear assembly in Block 4. The shore-side switchgear assembly 4 may, for example, include a (shore) circuit breaker and an earthing switch. The protective devices in the switchgear assembly 4 protect against, among other things, abnormal currents, earth fault currents, etc., e.g., by means of a safety shutdown.

[0104] The system components in blocks 5 to 7 in FIG. 4 comprise a cable management system or a system for line management (Eng. Cable Management System), hereinafter referred to as CMS, which is schematically represented by block 6. Block 6, together with the CMS, forms a shore-ship connection or interface equipment within which the shore power connection according to the invention is used as intended to connect high-voltage supply cables from the ship to the shore-side supply 1, 2 via the switchgear 4.

[0105] Blocks 5 and 7 represent control devices with safety functions of the interface equipment. They include, for example, a control for winding and unwinding the flexible high-voltage supply cable and a data interface for communication with the protection circuit 3 of the shore-side protective devices 4 and with a ship-side protection circuit 8 for protective devices in block 9. The supply lines to be connected to the CMS 6 (not shown), which are used at interface 6, are usually carried and provided by the ship in the case of a container ship. The control devices 5 and 7 can include active control for winding and unwinding the supply lines, which also provides adjustments during loading or unloading of the ship and is intended, for example, to compensate for tidal fluctuations. Block number 8 shows the ship-side protection circuit, which controls the protective devices in the ship's shore-side switchgear 9.Block 9 refers to this onboard switchgear, which is permanently installed in a specific space, container, or similar structure to facilitate equipment changes. The equipment in Blocks 8 and 9 corresponds to ship-borne components for connecting to the shore power supply of the CMS or the shore-to-ship interface equipment 6. Block 10 refers to a shipboard isolation transformer connected to an onboard receiving installation, which is, for example, part of the ship's main distribution panel 11. This panel supplies the ship's electrical network 12 to onboard consumers. The ship's generator (not shown) is also typically connected to the main distribution panel 11. The ship's generator should be switched off after connection and synchronization with the shore power supply while the ship is docked, for example, for container loading.The left section with blocks 1 to 4 in FIG.4 is a permanently installed port-side structure.

[0106] The interface area with blocks 5 to 7, in particular the CMS or the land-to-ship interface equipment 6, is typically installed on the port side and may include movable system components. The right-hand section of the block diagram in FIG. 4, with blocks 8 to 12, is carried by the vessel being supplied and is therefore variable during operation.

[0107] A shore power outlet is a required key component in the shore-ship interface equipment 6 of the shore power supply system and represents the connection point between the port substation, cf. block 1-4 in FIG. 4, and the ship's onboard electrical system 12. A shore power outlet in this sense is sometimes also referred to as a shore power box.

[0108] Returning to the proposed system, Fig. 5 shows essential components,

[0109] The system consists essentially of the

[0110] The shore power connection device 200, with the carriage 220 and the counter-rotating energy chains 214 connected to it on both sides, is installed in the trench 104 or shaft-like channel by means of a support structure 70 (e.g., as in FIG. 7A-7B). Prefabricated concrete elements or precast concrete parts 109 form a straight trench 104 along the desired travel path, e.g., 200 m or longer. The length and design of the counter-rotating energy chains 214 are dimensioned accordingly for a long travel path. The trench 104 is covered, e.g., by means of individual cover elements 108 in the form of loosely removable GRP covers, so that vehicles can drive over the trench. The shore power connection device 200 is connected to the driven carriage 220, e.g.,The system, including the opposing energy chains 214 connected to both sides of the support structure 70, can be moved within the trench 104 and beneath the closed cover, i.e., without lifting the cover elements 108, via a friction wheel drive. Depending on the direction of travel, one of the two opposing energy chains 214 is pulled and the other pushed, and vice versa.

[0111] The plug connectors 204 used for the shore power supply, in particular sockets or plug-ins, are mounted on the movable components 212 which serve as supports. After opening the respective cover elements 108, the components 212 can be pivoted into the position shown in FIG. 1D-1E or FIG. 2A to facilitate connection to the transfer vehicle (see FIG. 3).

[0112] FIGS. 6A-6B show further details of the construction of the connecting unit 202. The carriage 220 can travel on rails 701 and support structure 70 (e.g., as in FIGS. 7A-7B) thanks to four friction wheels 221, which are driven in pairs by two electric motors 222. One axle is equipped with a brake to lock the carriage in the desired position. Lateral guide rollers guide the carriage 220 on the rails 701.

[0113] The two energy chains 214, one on each side of the carriage 220, are fastened by means of two longitudinally projecting connectors.

[0114] Each of the movable components 212, which serve as mounting points, is fitted with two HVSC sockets or HVSC outlets 204A, 204B or 204C, 204D. An actuator or drive 216A, 216B rotates the components into the connection position. The housing 218 contains the necessary control technology for the connection unit 202 and, if applicable, other technology, e.g., for safety-relevant data connections of the HSVC supply system.

[0115] The carriage 220 can only travel in two directions (see FIG. 5, left or right) as long as it has not reached the end of the shaft or trench 104, for which sensors are provided which act as limit switches to prevent the carriage 220 from crossing the restricted zone and to stop its movement via suitable control technology.

[0116] Furthermore, suitable sensors can be used to monitor the retracted configuration or the extended second configuration (FIG.2A or FIG.1D-1E) in order to block movement of the carriage 220 when the terminal boxes or components 212 are extended, or to allow movement of the carriage 220 only when the terminal boxes or components 212 are retracted, into the configuration shown in FIG.5 (see also FIG.1B).

[0117] FIG.7A-7B illustrate a preferred design of the support structure 70, with segments consisting of parallel L-steel profiles which serve as rails 701, which form the running surfaces of the rollers 221 and are welded onto support brackets 702.

[0118] The support brackets 702 are custom-made to hold the rails at the desired height in the trench 104, allowing the carriage 220 to move over the horizontal lower runs of the energy chains 214. The energy chains 214 are always held parallel to the rails by guide elements 703A and 703B. These guide elements 703A and 703B are, for example, side walls for guide channels of an energy chain and are screwed to the brackets 702. Prefabricated segments, as shown in FIG. 7B, with a length extending over several of the precast concrete sections 109, can be delivered and, using suitable fastening technology, mounted on the bottom side of the precast concrete sections 109 in the trench 104 using the support brackets 702.

[0119] Finally, FIG. 8 shows a variant of the connection unit 802 in which the plug-in connection elements 204 are not arranged facing away from each other on the carriage, but rather facing each other; that is, the movable components 212 are mounted on the carriage 220 in the opposite direction compared to FIG. 1-2 or FIG. 5. Otherwise, the construction can correspond to the above. The connection unit 802 also allows the vehicle to travel under the cover to the desired position, where the transfer vehicle 300 provides the supply lines to be connected and transfers them to the ship. As FIG. 8 illustrates, only a small longitudinal section of the trench 104 needs to be opened, e.g., only two cover elements 108 for each of the extended components 212 with the plug-in connection elements 204. FIG. 8 further shows that the components 212, in the pivoted position or in the second configuration, form an angle in the range of 0 Jl 1^ 45°, here e.g. of approximately 30° with the horizontal. The same applies to the construction method according to FIG. 1-2 or FIG. 5.

[0120] A design with a shallow angle is also conceivable, in which the plug connectors 204 are rigidly mounted to the carriage. The angle of inclination with a slightly upward-pointing axis direction of the plug connectors 204 (or a diagonally downward-pointing insertion direction) simplifies the connection process for the operator.

[0121] PE / EJ Sept. 2025

[0122] Reference symbol list

[0123] FIG.1-2, FIG.5 (shore power connection device):

[0124] 70 Supporting structure

[0125] 100 System

[0126] 102 Quay wall

[0127] 104 Trench

[0128] 106 Port surface

[0129] 108 cover elements (of the cover)

[0130] 109 trench element (precast concrete part)

[0131] 200 shore power connection device

[0132] 202 Connection unit

[0133] 204 Plug connector element

[0134] 206 first configuration

[0135] 208 second configuration

[0136] 210 connection cable

[0137] 212 moving component

[0138] 214 Energy supply chain

[0139] 216 Actuator

[0140] 218 cases

[0141] 220 cars (with chassis)

[0142] 221 wheels

[0143] 222 Electric motor

[0144] FIG.3 (Transfer vehicle)

[0145] 200 shore power connection device

[0146] 212 moving parts

[0147] 300 handover vehicle

[0148] 304 Trench

[0149] 332 Lifting equipment

[0150] 340 supply lines

[0151] 350 trench cover elements

[0152] 360 Cruise Ship FIG.4 (typical HVSC system)

[0153] 1 Connection to the supply network

[0154] 2. Onshore transformer, possibly with frequency converter

[0155] 3. Landside protection circuit

[0156] 4. Landside switchgear (circuit breakers, earthing switches, etc.)

[0157] 5 Control

[0158] 6 Land-to-ship interface equipment / CMS

[0159] 7 Control

[0160] 8 Protection circuits for the ship

[0161] 9 Shore power connection switchgear

[0162] 10 On-board isolation transformer

[0163] 11 Onboard receiver circuit

[0164] 12 Onboard electrical system on the container ship

[0165] FIG.6A-6B

[0166] 202 Connection unit

[0167] 204A, 204B, 204C, 204D connector element

[0168] 212 moving component

[0169] 214 Energy supply chain

[0170] 216A, 216B Actuator

[0171] 218 cases

[0172] 220 cars (with chassis)

[0173] 221 wheels

[0174] 222 Electric motor (drive of the wheels)

[0175] FIG.7A-7B

[0176] 70 Supporting structure

[0177] 701 Rail (L-profile)

[0178] 702 support brackets

[0179] 703A, 703B Guide elements

[0180] FIG. 8

[0181] 802 Connection unit

[0182] 204 Plug connector element

[0183] 212 moving component

[0184] 300 handover vehicle

Claims

29 K750266WO PE / EJ Sept. 2025 PATENT CLAIMS 1. Shore power connection device (200) for connecting a ship to a shore power supply network, comprising the shore power connection device (200): - a connection unit (202) with at least one plug connection element which can be connected to an associated plug connection element for supplying the ship and which can be connected to a shore power supply network by means of at least one connection cable (210) in order to connect the ship to the shore power supply network; - wherein the connecting unit (202) is designed to be movable along a travel path, characterized in that - the connecting unit (202) is designed to be arranged in a trench (104) along the harbor quay, and - the connection unit (202) is configured such that it has at least a first immersed configuration in which the connection unit (202) is completely arranged in the trench (104) and is movable while immersed in the trench along the travel path within the trench, in particular to a desired supply position for connecting a ship, and the connection unit (202) is preferably configured such that it has a second configuration (208) in which at least the plug connection element of the connection unit (202) protrudes from the trench (104), in particular at a desired supply position for connecting a ship. 30 2. Shore power connection device (200) for connecting a ship to a shore power supply network, comprising: - a connection unit (202) movable along a travel path with at least one plug connection element which can be connected to an associated plug connection element for supplying the ship and which can be connected to a shore power supply network by means of at least one connection cable (210); characterized in that the connection unit (202) is arranged in a trench (104) which is covered by a cover made of a number of removable cover elements, and the connection unit (202) is movable within the trench (104) below the cover along a travel path.

3. Shore power connection device (200) according to claim 1 or 2, further comprising: - at least one energy chain (214) for guiding the at least one connection cable (210), wherein the connection unit (202) is connected or connectable to the shore power supply network via the energy chain (214), and wherein the energy chain (214) is arranged such that, when the connection unit (202) is arranged in the trench (104), in particular at least in the first configuration (206) of the connection unit (202), it is always completely in the trench (104), in particular arranged such that the energy chain (214) remains completely submerged in the trench (104) in every position to which the connection unit (202) can be moved.

4. Shore power connection device (200) according to claim 1, 2 or 3, wherein the connection unit (202) has a movable component on which the at least one plug connection element (204) is arranged and which between the first configuration (206) and the or a second configuration (208) is movable in a vertical direction (105), preferably - the movable component (212) is pivotable about a substantially horizontal axis, so that when the connection unit (202) is arranged in the trench (104), the movable component (212) with plug-in connection element (204) is arranged completely in the trench (104) in the first configuration (206) and at least partially protrudes from the trench (104) in the second configuration (208).

5. Shore power connection device (200) according to claim 4, wherein a first movable component with at least one plug connection element (204) is pivotable about a first pivot axis, wherein a second movable component with at least one second plug connection element (204) is pivotable about a second pivot axis, in particular a second pivot axis parallel to the first pivot axis; preferably wherein, when the connection unit (202) is in the first configuration (206), the first pivotable component (212) is pivotable in a first pivot direction about the first pivot axis and the second pivotable component (212) is pivotable in a second pivot direction opposite to the first pivot direction about the second pivot axis and the components in the second configuration (208) protrude from the trench (104) at least with their plug connection elements (204).

6. Shore power connection device (200) according to claim 4 or 5, further comprising: at least one drive for extending and retracting the first component (212) and / or the second component (212), wherein the components are preferably movable independently of each other, in particular pivotable.

7. Shore power connection device (200) according to one of claims 4 to 6, wherein the at least one plug connection element (204) is arranged at the free end region, in particular at an end face of the component (212) and / or the plug connection element (204) is arranged such that the connection direction for connection with a corresponding plug connection element (204) runs parallel to the direction of travel and preferably forms an angle in the range 0 45° with a horizontal, especially in the second configuration (208) .

8. Shore power connection device (200) according to one of claims 1 to 7, wherein the connection unit (202) comprises a carriage (220) with a chassis with which the connection unit can be moved within and along the trench when it is located in the trench (104), particularly in the first configuration, wherein the chassis has running wheels (221) and at least one axle with two running wheels (221) is connected to a drive (222), wherein preferably two axles, each with a pair of wheels, are each connected to a drive (222), wherein particularly preferably at least one driven axle has a braking device for locking the carriage at a desired supply position.

9. Shore power connection device (200) according to one of claims 1 to 8, in particular according to claim 8, further comprising a support structure (70) comprising longitudinally extending support rails (701) which form a running surface for running wheels and define the travel path and are preferably mountable in the trench by means of transversely arranged support brackets (702), wherein the support structure preferably comprises guide elements (703A, 703B) for the energy supply chain (n) (214) arranged below the support rails and parallel to them, in particular arranged such that the chassis of the connection unit (202) is movable above a lower run of the energy supply chain (n) (214). 33 10. Shore power connection device (200) according to one of claims 1 to 9, - wherein two counter-rotating energy supply chains (214) are provided and attached to opposite sides of the connection unit (202), in particular its chassis; and / or - a movable component with two plug-in connection elements (204) is provided, in particular two pivotable components with two plug-in connection elements (204) each; and / or - wherein the connector element (204) is a connector unit that is splash-proof, preferably designed according to protection class IP67 or higher; and / or - the connector element (204) as a junction box for an HVSC system according to IEC / IEEE 80005-1:2019, and / or in particular according to the requirements of DIN EN IEC 62613-1 and DIN EN IEC 62613-2, designed and set up.

11. System (100) , exhibiting: - a shore power connection device (200) according to one of the Claims 1 to 10; and - a trench (104) , wherein the shore power connection device (200) is arranged in the trench (104) and is movable in a longitudinal direction within the trench (104).

12. System (100) , in particular for a port quay facility, according to claim 11, - wherein the shore power connection device (200) and the trench (104) are arranged such that the trench (104) can be completely covered by one or more covers (108) when the shore power connection device (200) is in the first configuration (206); and / or - wherein, viewed in cross-section perpendicular to the longitudinal direction, the connection unit (202) is completely contained in the trench (104), particularly when the shore power connection device (200) is in the first configuration (206). 34 13. System (100) or plant according to claim 11 or 12, further comprising - a transfer vehicle (300), preferably with lifting equipment (320) for handling supply lines (340) for supplying a ship, in particular a cruise ship (360); and / or - a plurality of trench cover elements (350), in particular made of fiber composite material, for covering the trench (304), wherein the trench cover elements are removable and preferably laid loosely or without hinges on the trench.

14. Shore power connection device (200) according to one of claims 1 to 10 or system according to one of claims 11 to 13, wherein the shore power connection device (200) is designed and equipped for the on-demand electrical connection of the on-board power grid of a moored ship, in particular a container or cruise ship, and a shore-side supply network, in particular for the purpose of multi-phase voltage supply at at least 6.6kV or 7.2kV and / or at at least 2 MVA connection capacity.

15. Use of a shore power connection device (200) according to any one of claims 1 to 10 for supplying a ship, wherein the shore power connection device (200) is designed and configured for the on-demand electrical connection of the on-board power grid of a moored ship, in particular a container or cruise ship, and a shore-side supply network, in particular for multi-phase voltage supply at at least 6.6kV or 7.2kV and / or at at least 2 MVA connection capacity, wherein the connection unit (202) is completely enclosed in a trench (104) when the shore power connection device (200) is in the first configuration (206) and is not supplying a ship.

Images