TEMPERATURE SENSING DEVICE FOR A HIGH VOLTAGE DISCONNECTING SWITCH AND HIGH VOLTAGE DISCONNECTING SWITCH INCLUDING A TEMPERATURE SENSING DEVICE

Abstract

A sensing device for a high voltage disconnecting switch comprises a light emitting element, which is configured to align its temperature with a temperature of the high voltage disconnecting switch, and an optical fiber, which is configured to receive a light emission from the light emitting element and configured to guide the light emission. Further, a deriving unit is configured to receive the light emission from the optical fiber and derive information about the temperature of the high voltage disconnecting switch based on a duration of the received light emission.

Claims

1. A sensing device for a high voltage disconnecting switch, the sensing device comprising: a light emitting element configured to align its temperature with a temperature of the high voltage disconnecting switch; an optical fiber configured to receive a light emission from the light emitting element and configured to guide the light emission; a deriving unit configured to receive the light emission from the optical fiber and derive information about the temperature of the high voltage disconnecting switch based on a duration of the received light emission.

2. The sensing device of claim 1, further comprising a contact element configured to be arranged on a surface of the high voltage disconnecting switch and configured to align with a temperature of the surface, wherein the light emitting element and/or the optical fiber is disposed on a surface of the contact element, and/or wherein the light emitting element and/or the optical fiber is enclosed by the contact element.

3. The sensing device of claim 2, wherein the contact element includes a plastic material, and/or the contact element includes a metal material, and/or the contact element comprises a cylindrical-shaped portion, and/or the contact element comprises a ring-shaped portion.

4. The sensing device of any one of claims 1 to 3, wherein the light emitting element and/or the optical fiber is configured to align with a temperature of the surface of the high voltage disconnecting switch and/or to align with a temperature of the contact element.

5. The sensing device of any one of claims 1 to 4, wherein the light emitting element is a coating disposed on a surface of the optical fiber.

6. The sensing device of any one of claims 1 to 5, wherein the light emitting element includes a luminescent substance.

7. The sensing device of any one of claim 6, further comprising a light source configured to intermittently emit light, wherein the optical fiber is further configured to receive light emitted by the light source and further configured to guide the light emitted by the light source, and wherein the light emitting element is further configured to absorb energy of the light, which is emitted from the light source and guided by the optical fiber.

8. The sensing device of any one of claims 1 to 7, wherein the deriving unit is further configured derive information about the temperature of the high voltage disconnecting switch based on an intensity and/or a frequency spectrum and/or a frequency distribution of the received light emission.

9. The sensing device of any one of claims 1 to 8, further comprising a mirroring component and/or a focusing optics, the mirroring component coupled to an end of the optical fiber and/or the focusing optics arranged between the optical fiber and the deriving unit, and/or wherein the deriving unit is configured to receive a focused light emission from the optical fiber and the deriving unit is configured to derive the information about the temperature of the high voltage disconnecting switch based on the received focused light emission.

10. The sensing device of any one of claims 1 to 9, further comprising an alert module configured to output an alert message if a high voltage disconnecting switch temperature, which is determined by the deriving unit, exceeds a threshold.

11. The sensing device of any one of claims 1 to 10, wherein the light emitting element and/or the contact element is further configured to be arranged between a spring of the high voltage disconnecting switch and contacting means of the high voltage disconnecting switch, and/or wherein the light emitting element and/or the contact element is further configured to separate and/or electrically isolate the spring from the contacting means.

12. A high voltage disconnecting switch comprising the sensing device according to any one of claims 1 to 11.

13. The high voltage disconnecting switch of claim 12, the high voltage disconnecting switch further comprising a spring configured to elastically deform when a switching state of the high voltage disconnecting switch changes, wherein the sensing device is partially arranged between a spring of the high voltage disconnecting switch and contacting means of the high voltage disconnecting switch, and/or wherein the light emitting element and/or the contact element is further configured to separate and/or electrically isolate the spring from the contacting means.

14. The high voltage disconnecting switch of claim 12 or 13, wherein the sensing device is shaped around a spacing element between the spring of the high voltage disconnecting switch and the contacting element of the high voltage disconnecting switch.

15. The high voltage disconnecting switch of any one of claims 12 to 14, wherein the high voltage disconnecting switch is configured as a breaking-closing disconnecting switch, BCDS, a centre break disconnecting switch, a double break disconnecting switch, a vertical break disconnecting switch, a panthograph disconnecting switch, a semi-panthograph disconnecting switch or a knee type disconnecting switch.

Description

[0043] To enhance the understanding of the arrangement described afore the following figures are provided:

[0044] FIG. 1A/B schematically shows an example for a high voltage disconnecting switch, comprising two connecting means.

[0045] FIG. 2A/B schematically shows an example for sensing device for a high voltage disconnecting switch.

[0046] FIG. 3A/B schematically shows another example for sensing device for a high voltage disconnecting switch.

[0047] FIG. 4A/B schematically shows yet another example for sensing device for a high voltage disconnecting switch.

[0048] If not explicitly described contrary, identical reference signs used in the drawing describe corresponding or similar components used for the different implementations. Further, to enhance clarity of the implementations shown, not all figures comprise reference signs for all elements shown.

[0049] FIG. 1A/B shows an example for a high voltage disconnecting switch, comprising the high voltage connecting means A, B. The two high voltage connecting means A, B are configured to be position spaced apart from each other (FIG. 1B) and are configured to be positioned in contact with each other (FIG. 1A), thereby disconnecting a high voltage link and establishing a high voltage link, respectively. For establishing an electric conductive connection between the connecting means A, B, contact segments 110 are fixed to one of the connecting means.

[0050] Further, the shown high voltage disconnecting switch comprises the springs 120, which are also fixed to one of the connecting means. The springs 120 provide a mechanical pressure to a contact zone of the contact segments 110 thereby supporting the electric conductive connection between the connecting means A, B in the closed switch state (FIG. 1A).

[0051] As shown in FIG. 1A/B, the contact segments 110 as well as the springs 120 are fixed to one of the connecting means with a fixation element 140. However, in the vicinity of the contact zone of the contact segments 110, the springs 120 and contact segments 110 are spaced apart from each other by a cylindrical separation element 130, which comprises a non-conductive plastic material.

[0052] FIG. 2A/B shows an example for a sensing device, which is configured to determine a temperature of the high voltage disconnecting switch, without transmission of electrical energy in the close vicinity of the high voltage disconnecting switch.

[0053] The shown sensing device comprises a contact element 16, which is configured to be arranged on a surface of the high voltage disconnecting switch, i.e. a surface of the connecting means A, B and/or a surface of the contact segments 110.

[0054] In the variant shown in FIG. 2A/B, the contact element 16 is a ring-shaped copper element, which comprises a high thermoconductivity. Hence, the contact element 16 promptly aligns its temperature to the temperature of a surface on which the contact element 16 is arranged.

[0055] Further, the shown sensing device comprises a light emitting element 10, which is enclosed by the ring-shaped the contact element 16. The light emitting element 10 is configured to align its temperature with the temperature of contact element 16 and, thus, with the temperature of the surface on which the contact element 16 is arranged.

[0056] In the variant shown in FIG. 2A/B the light emitting element 10 is a photoluminescent coating disposed on a surface of an optical fiber 12. The optical fiber 12 extends through the contact element 16 and is configured to receive a light emission from the light emitting element 10, i.e. the photoluminescent coating, and configured to guide the light emission. Further, the fiber 12 is coupled to a deriving unit 14, which is configured to receive light emissions from the optical fiber 12 and derive information about the temperature of the light emitting element 10 and, thus, the temperature of the contact element 16 and the temperature of the surface on which the contact element 16 is arranged, based on a duration of the received light emission.

[0057] A light source (not shown) is configured to intermittently emit light through the optical fiber 12. The photoluminescent coating 10 is configured to absorb energy of the light, which is emitted from the light source and guided through the optical fiber 12. Thus, the photoluminescent coating 10 is supplied with energy from the light source through the optical fiber without a transmission of electrical energy.

[0058] When the photoluminescent coating 10 absorbs the energy of the light from the light source, electrons inside the photoluminescent coating 10 have the phenomenon of an energy level transition that generates fluorescence. When the intermittently provided light from the light source is temporarily faded, the luminescence disappears in a certain period, wherein the temporal extend of this period depends on the temperature of the coating, i.e. the temperature of the surface on which the contact element 16 is arranged. Hence, the deriving 14 unit can receive the light emission from the light emitting element through the optical fiber 12 and derive information about the temperature the surface on which the contact element 16 is arranged based on the duration of the received light emission.

[0059] As shown in FIG. 2A/B, a sensing device can be designed corresponding to a shape of the cylindrical separation element 130. Thus the sensing device shown in FIG. 2A/B can be arranged easily between a spring 120 and a contact segment 110 of a high voltage disconnecting switch and allows measuring a temperature of the disconnecting switch, particularly a temperature of the relevant contact zone of the connecting means A, B, without transition of electrical energy in the near vicinity of the high voltage disconnecting switch.

[0060] As shown in FIG. 3A/B, the contact element 16 of the sensing device can also comprise a cylindrical-shaped portion 18, which comprises a plastic material. The sensing device shown in FIG. 3A/B is to be operated the same way as the sensing device shown in FIG. 2A/B but may replace the separation element 130 shown in FIG. 1A/B instead of being arranged to it.

[0061] Further, as shown in FIG. 4A/B, the light emitting element 10, which is coupled with and/or disposed on the optical fiber 12, can extend through distinguished portions of the contact element 16. When the light emitting element 10 is disposed on the optical fiber 12, the optical fiber 12 can extend through distinguished portions of the contact element 16. For example, the light emitting element 10 and/or the optical fiber 12 may form a closed or open loop. Optionally, an end of the light emitting element 10 and/or the optical fiber 12 may be coupled to a mirroring component 20, which is configured to reflect light emitted by the light emitting element 10. Thus, an intensity of the light emission received by the deriving unit can be enhanced.

[0062] Conclusively, it is emphasized that the subject-matter shown in the figures does not limit the subject-matter claimed and does merely serve to enhance the understanding of the disclosure. However, the features shown in the figures and described above are included in the disclosure and can explicitly be combined with further features of the disclosure.