Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for influencing the lightening current distribution in electrical systems, which are integrated in rotor blades of wind turbines

A technology of wind power generators and rotor blades, applied in the direction of wind power generators, wind power generators consistent with the wind direction, wind power generation, etc., can solve the problems of damage to electrical components, damage, etc.

Inactive Publication Date: 2018-07-17
DEHN SOHNE GMBH CO KG
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a risk that the relevant electrical branch circuits of the additional electrical system are exposed to excessively high lightning currents, which could damage or damage electrical components in the corresponding system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for influencing the lightening current distribution in electrical systems, which are integrated in rotor blades of wind turbines
  • Method for influencing the lightening current distribution in electrical systems, which are integrated in rotor blades of wind turbines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] according to figure 1 and 2 The illustration takes the rotor blade 5 of the wind turbine as a starting point.

[0024] For example, two receivers 1 are formed in the rotor blade 5 as lightning protection elements. A ground wire is provided between the receivers 1 as a discharge device, which can direct the lightning current to the ground. The electrical system, in particular the consumer 3 for heating the rotor blades, is connected to an external power source 6 via a power supply line 7 .

[0025] The actual separation distance between the power line 7 and the ground line 2 or the discharge device is less than or equal to 1m. figure 1 as indicated by the symbol.

[0026] The actual required separation distance s according to EN 62305-3 is as follows:

[0027] S=k i ·k c / k m ·l

[0028] in,

[0029] k i = 0.08 (for LPL1)

[0030] k m = 1.0 (for air)

[0031] k c =1.0 (for n=1) (number of discharge devices)

[0032] l=50m.

[0033] Therefore, the separat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for influencing the light current distribution in electrical systems, which are integrated in rotor blades of wind turbines, wherein at least one lighting current receiver is located in each rotor blade, in order to guide lighting currents via a discharge device from the rotor blade tip to the rotor blade root and onwards to earth. According to the invention, multiple overvoltage arresters are arranged between the respective electrical system positioned in the rotor blade and the part of the discharge device positioned in the rotor blade, wherein the partial current flowing in the event of lightening is reduced via the electrical system by a respective additional impedance, wherein the additional impedance is designed in such a way that, in the event of lighting, the resulting potential difference between the electrical system and the discharge device is aligned with the dielectric strength of the respective electrical system and the required separation distance between the respective system and the discharge device.

Description

technical field [0001] The invention relates to a method for influencing a lightning current distribution in an electrical system integrated in a wind turbine rotor blade according to claim 1, wherein at least one lightning current receiver is provided in the respective rotor blade , in order to conduct the lightning current from the tip of the rotor blade to the root of the rotor blade and further to the ground through the discharge device. Background technique [0002] DE 102007050009 A1 discloses a rotor blade for a wind turbine having a lightning protection system. The rotor blade body has a collector, ie a receiver, which is designed for the location where a lightning strike occurs. Furthermore, an insulating arrester is provided within the rotor blade body, the insulating arrester and the at least one receiver being connected to each other. A dielectric layer is also provided, which serves as an insulating means to cover the discharger. The arrester is connected to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F03D80/30F03D1/06H02G13/00
CPCF03D1/0675F03D80/30H02G13/80H02G13/00Y02E10/72
Inventor J·比克尔
Owner DEHN SOHNE GMBH CO KG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com