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Wind turbine lightning protection and monitoring systems

A technology for wind turbines and monitoring systems, used in wind turbines, wind turbine components, wind power generation, etc., can solve problems such as inefficiency, component tolerances, and difficulty in maintaining spark gaps

Inactive Publication Date: 2015-02-11
TYCO ELECTRONICS (UK) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of such a spark gap to conduct lightning strike power away from the rotor provides a high impedance connection and is therefore ineffective
Also, due to component tolerances, it is difficult to keep spark gaps such that they are small enough

Method used

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  • Wind turbine lightning protection and monitoring systems
  • Wind turbine lightning protection and monitoring systems
  • Wind turbine lightning protection and monitoring systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] figure 1 A wind turbine 2 comprising a hub 8 and nacelle 4 assembly according to the invention is shown. The nacelle 4 is supported by a tower 6 and a hub 8 supports two turbine blades 10 for rotation about an axis of rotation 16 . Each turbine blade includes a domed lightning pad 14 positioned outside and proximate to its tip. exist figure 1 An enlarged cross-sectional view of the portion of the upper turbine blade 10 labeled A is shown in figure 2 middle, figure 2 A lightning conductor 18 made of a suitable conductive material such as a copper alloy is shown connected to an inner portion of the pad 14 . A lightning conductor 18 extends along the blade 10 to the hub 8 past an inductive sensor 20 in the form of a coil having a part around it. A sensor lead 22 from an inductive sensor 20 extends along the blade 10 to the hub 8 . The inductive sensor 20 may be located at other locations along the lightning conductor 18 , for example in the hub 8 . Also, the induc...

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PUM

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Abstract

A wind turbine hub (8) and nacelle (4) assembly including lightning conducting means (26, 30, 32, 40) for conducting lightning between the hub (8) and the nacelle (4), the hub (8) being mounted for rotation relative to the nacelle (4) and being adapted to support turbine blades, the hub (8) including a hub conductor (26) for connection to a turbine blade supported by the hub (8), the lightning conducting means including a conductive track (40) and a terminal (30, 32) which confront and are displaceable relative to each other, one of the conductive track (40) and the terminal (30, 32) being mounted on the hub (8) and being electrically connected to the hub conductor (26) and the other of the conductive track (40) and the terminal (30, 32) being mounted on the nacelle (4), the terminal (30, 32) including a terminal main body (30) which is spaced from the conductive track (40) and a sacrificial conductive terminal extension (32) extending from the terminal main body (30) towards the track (40).

Description

technical field [0001] The present invention relates to a wind turbine lightning strike protection system, a method of conducting lightning strike power to ground and a monitoring system for monitoring a lightning strike on a wind turbine. Background technique [0002] Wind turbines having a lightning conduction system for conducting lightning strike electricity to the ground are known. An example of such a wind turbine is disclosed in patent US 2007 / 0114797-A1, wherein a rotor hub supporting a plurality of wind turbine blades is provided with slip rings for conducting lightning strike electricity to the ground. The spark gap members are mounted on the rotor support pods to each be positioned with an end having a spark gap spaced a small distance from the slip ring. Lightning strike electricity is conducted to the slip ring and then across the spark gap to ground. The use of such a spark gap to conduct lightning strike power away from the rotor provides a high impedance co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D11/00H02G13/00
CPCF05B2260/80Y02E10/725H02G13/60Y02E10/722Y02E10/726H02G13/00F03D11/0033F03D80/30Y02E10/72F03D80/00G01W1/16
Inventor J.卡特科波尔R.A.布兰科
Owner TYCO ELECTRONICS (UK) LTD