DRIVE SYSTEM FOR HIGH-VOLTAGE ELECTRICAL DEVICES

Abstract

The present invention relates to a drive system for high-voltage electrical devices, such as a load break switch-disconnector and a grounding disconnector, which can be applied in utility grids, allowing said drive system to motorize the switching of both electrical devices. To that end, the drive system comprises a subassembly which allows selecting the motorized switching operation of the first electrical device or the motorized switching operation of the second electrical device. The motorization of the switching of both electrical devices thereby allows performing said operation remotely.

Claims

1. A drive system for high-voltage electrical devices comprising: a main drive assembly; and a subassembly coupleable to at least a first electrical device and a second electrical device for the transmission of at least two switching positions, characterized in that the subassembly comprises a coupling mechanism of at least two positions, a first position being associated with the first electrical device and a second position being associated with the second electrical device.

2. The drive system according to claim 1, characterized in that the coupling mechanism comprises a third position located in an intermediate location between the first position and the second position.

3. The drive system according to claim 2, characterized in that the coupling mechanism comprises a driving element associated with a mechanical coupler, wherein said driving element is suitable for being linearly displaced in the first, second and third positions.

4. The drive system according to claim 3, characterized in that the mechanical coupler is integrally attached to a drive shaft of a motor.

5. The drive system according to claim 3, characterized in that the mechanical coupler can be coupled to a first coupling element or a second coupling element.

6. The drive system according to claim 5, characterized in that the first coupling element is associated with the first electrical device and the second coupling element is associated with the second electrical device.

7. The drive system according to claim 4, characterized in that the coupling mechanism in its first position couples the motor with a first coupling element, such that the drive system can transmit at least two switching positions to the first electrical device.

8. The drive system according to claim 4, characterized in that the coupling mechanism in its second position couples the motor with a second coupling element, such that the drive system can transmit at least two switching positions to the second electrical device.

9. The drive system according to claim 7, characterized in that the coupling mechanism in its third position decouples the motor from the first coupling element.

10. The drive system according to claim 8, characterized in that the coupling mechanism in its third position decouples the motor from the second coupling element.

11. The drive system according to claim 9, characterized in that the coupling mechanism can be operated in a manual or motorized manner.

12. The drive system according to claim 10, characterized in that the coupling mechanism can be operated in a manual or motorized manner.

13. The drive system according to claim 11, characterized in that a coil constitutes the coupling mechanism.

14. The drive system according to claim 12, characterized in that a coil constitutes the coupling mechanism.

15. The drive system according to claim 1, characterized in that the subassembly comprises a shell.

16. The drive system according to claim 15, characterized in that the shell is attached to the main drive assembly, forming a drive system configured as a single part.

Description

DESCRIPTION OF THE DRAWINGS

[0017] FIG. 1 shows a perspective view of the drive system comprising the main drive assembly and the subassembly with the coupling mechanisms and the motor.

[0018] FIG. 2 shows a diagram of the subassembly comprising the coupling mechanisms with the driving element, the mechanical coupler, the motor with its drive shaft and the coupling elements.

[0019] FIG. 3 shows a diagram with the working positions of the coupling mechanisms.

PREFERRED EMBODIMENT OF THE INVENTION

[0020] A preferred embodiment is described below in reference to the aforementioned drawings, without this limiting or reducing the scope of protection of the present invention.

[0021] FIG. 1 shows the drive system (1) comprising a main drive assembly (6) and a subassembly (2). The subassembly (2) allows motorizing the switching of a first electrical device (3) and a second electrical device (4), allowing the drive system (1) to transmit two switching positions (connection and opening) to the first electrical device (3) or the second electrical device (4) in a motorized manner. The invention thereby enables performing remotely, without an operator having to go to the installation, the switching for the connection or for the opening of the first electrical device (3), such as a load break switch-disconnector, for example, and the switching for the connection or for the opening of the second electrical device (4), such as a grounding disconnector, for example.

[0022] The subassembly (2) therefore allows coupling the main drive assembly (6) with the first electrical device (3) or the second electrical device (4), for the purpose of transmitting two switching positions (connection-opening) to said electrical devices (3, 4). To that end, the subassembly (2) comprises coupling mechanism (5), such as a coil, for example, for linear displacement of three working positions (A, B, C), wherein the first position (A) is associated with the first electrical device (3) and the second position (B) is associated with the second electrical device (4). The third position (C) is located in an intermediate position between the first position (A) and the second position (B), this third position (C) being a neutral position with respect to the other two positions (A, B), as shown in FIGS. 2 and 3.

[0023] As can be seen in FIG. 2, the coupling mechanism (5) comprise a driving element (7), such as a bearing, which is displaced linearly in the aforementioned three working positions (A, B, C). This driving element (7) is associated with a mechanical coupler (8), where this mechanical coupler (8) may present circular movement caused by the drive shaft (9) of a motor (10). Due to the displacement of the driving element (7), the mechanical coupler (8) can be coupled to a first coupling element (11) or a second coupling element (12), depending on the position (A, B) to which the driving element (7) is displaced. Therefore, the coupling between the mechanical coupler (8) and the first coupling element (11) causes the switching (opening or connection) of the first electrical device (3), and the coupling between the mechanical coupler (8) and the second coupling element (12) causes the switching (opening or connection) of the second electrical device (4). In other words, the coupling mechanism (5) in their first position (A) couple the motor (10) with a first coupling element (11), such that the drive system (1) can transmit two switching positions, i.e., the opening or connection of the contacts of the first electrical device (3), to said first electrical device (3), and on the other hand, the coupling mechanism (5) in their second position (B) couple the motor (10) with a second coupling element (12), such that the drive system (1) can transmit at least two switching positions, i.e., the opening or connection of the contacts of the second electrical device (4), to said second electrical device (4). In contrast, the coupling mechanism (5) in their third position (C) decouple the motor (10) from the coupling elements (11, 12). This third position (C) of the coupling mechanism (5) is reached after the switching of the first electrical device (3) or the second electrical device (4) has been performed, and the coupling mechanism (5) has therefore been de-energized.

[0024] As shown in FIG. 1, the subassembly (2) comprises a shell (13) in which some elements of the mentioned subassembly (2) are internally assembled, such as the driving element (7), the mechanical coupler (8) and the coupling elements (11, 12). The subassembly (2) is thereby attached to the main drive assembly (6), forming a single part consisting of the drive system (1).