Conductor overheat detection for a wind turbine and wind turbine
AssigneeSiemens Gamesa Renewable Energy A/S
InventorAnders Saaby Toft
Life of this patent
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Abstract
The present invention relates to an electrical system (1) for a wind turbine, comprising a first electrical device (2), a second electrical device (3), a plurality of electrical conductors (4) for electrically connecting the first electrical device (2) to the second electrical device (3) and a monitoring system (5) for monitoring a temperature condition of an electrical conductor (4). The monitoring system (5) comprises a monitoring device (6) and a first control loop (7) with a first temperature switch (8) for performing a temperature-dependent electrical switching action. The invention also relates to a method for operating an electrical system (1) of a wind turbine and to a method for retro-fitting an electrical system (1) of a wind turbine.
Claims15
An electrical system (1) for a wind turbine, comprising a first electrical device (2), a second electrical device (3), a plurality of electrical conductors (4) for electrically connecting the first electrical device (2) to the second electrical device (3), and a monitoring system (5) for monitoring a temperature condition of an electrical conductor (4), the monitoring system (5) comprising
- a monitoring device (6) for receiving monitoring information of the electrical conductor (4),
- a first control loop (7) with a first temperature switch (8) for performing a temperature-dependent electrical switching action,
- wherein the first control loop (7) is electrically connected to the monitoring device (6),
- wherein the first temperature switch (8) is attached to an electrical conductor (4) of the plurality of electrical conductors (4) and is configured for performing the electrical switching action when the temperature of the electrical conductor (4) exceeds a first temperature threshold (t1), and
- a second control loop (9) with a second temperature switch (10) for performing a temperature-dependent electrical switching action,
- wherein second control loop (9) is electrically connected to the monitoring device (6),
- wherein the second temperature switch (10) is attached to an electrical conductor (4) of the plurality of electrical conductors (4) and is configured for performing the electrical switching action when the temperature of the electrical conductor (4) exceeds a second temperature threshold (t2).
A method for retro-fitting an electrical system (1) of a wind turbine, wherein a first electrical device (2) of the electrical system (1) is electrically connected to a second electrical device (3) of the electrical system (1) of the electrical system (1) by a plurality of electrical conductors (4), the method comprising:
- providing a monitoring system (5) for monitoring a condition of an electrical conductor (4) of the plurality of electrical conductors (4), wherein the monitoring system (5) comprises a monitoring device (6) for receiving monitoring information for the electrical conductor (4),
- providing a first control loop (7) with a plurality of first temperature switches (8), wherein the first temperature switches (8) are configured for performing an electrical switching action when a temperature of the first temperature switch (8) exceeds a first temperature threshold (t1),
- attaching the first temperature switches (8) to different electrical conductors (4) of the plurality of electrical conductors (4),
- electrically connecting the first control loop (7) to the monitoring device (6),
- providing a second control loop (9) with a plurality of second temperature switches (10), wherein the second temperature switches (10) are configured for performing an electrical switching action when a temperature of the second temperature switch (10) exceeds a second temperature threshold (t2),
- attaching the second temperature switches (10) to different electrical conductors (4) of the plurality of electrical conductors (4), and electrically connecting the second control loop (9) to the monitoring device (6).
Dependencies are inferred from the claim text.