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Anti-lightning-stroke performance testing system and method of horizontal-shaft wind turbine blade

A technology for wind turbine blades and testing systems, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem of low cost, achieve low cost, simple test facilities, and meet the needs of research and development and testing.

Active Publication Date: 2016-03-09
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

The natural lightning strike test of megawatt-level blades has not yet been carried out in China, and the lightning strike test in the natural environment is of great significance for grasping the real lightning strike resistance performance of the blade. To carry out this work, it is first necessary to establish a set of practical Effective and less costly testing technique

Method used

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  • Anti-lightning-stroke performance testing system and method of horizontal-shaft wind turbine blade
  • Anti-lightning-stroke performance testing system and method of horizontal-shaft wind turbine blade
  • Anti-lightning-stroke performance testing system and method of horizontal-shaft wind turbine blade

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Embodiment Construction

[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0036] like figure 1 , 2 Shown, in implementing the anti-lightning strike performance testing method of the present invention, need to use such as figure 1 The blade fixing platform 3 shown is set on the ground 4 in the field environment where lightning is prone to occur. When in use, the blade 1 to be tested and evaluated is placed on the fixing platform 3, and the blade 1 and the The fixed platform 3 is fixed so that the tip of the blade 1 is upright and stands on the fixed platform 3 .

[0037] like figure 2 As shown, the blade lightning resistance performance testing system of the present invention includes an artificial lightning induction unit 100 arranged outside the blade, a data acquisition unit 200 , a grounding protection uni...

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Abstract

The invention discloses an anti-lightning-stroke performance testing system and method of a horizontal-shaft wind turbine blade. The system comprises an artificially triggered lightning unit, a data collection unit, a ground protection unit, and a tested anti-thunder unit installed inside the blade; and the artificially triggered lightning unit, the data collection unit, and the ground protection unit are arranged outside the blade. With a low-cost testing detection means, a precise anti-lightning-stroke performance parameter of the blade can be obtained, thereby meeting the requirement of anti-lightning-stroke design research and development and detection of the blade. The method is characterized in that lightning-stroke testing is carried out on the blade by using a field natural lightning-stroke mode or an artificially triggered lightning mode; and with portable equipment, the lightning triggering unit, capability and the response parameter of the blade during lightning are tested. The influences on the anti-lightning-stroke capability of the blade by different lightning triggering devices can be determined by modifying the artificially triggered lightning unit. Compared with the lightning-stroke testing method carried out in a high-voltage laboratory, the provided method had advantages of simple equipment, low cost, and convenient operation and the like.

Description

technical field [0001] The invention relates to the technical field of wind power generation in the mechanical industry, in particular to a lightning strike resistance performance testing system and method for horizontal axis wind turbine blades. Background technique [0002] Due to the special application conditions, wind turbines need to be installed in open areas in the wild. With the development of large-scale wind power, the height and size of large wind turbines are also increasing, which is very vulnerable to lightning strikes. Every year, 1% to 2% of wind turbine blades in the world are attacked by lightning. If the lightning protection capability of wind turbines and blades is insufficient, it will cause damage to blades and wind turbines, causing great economic damage. At present, many wind power companies are paying more and more attention to the research of lightning protection technology. International organizations have carried out wind turbine lightning strike...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 石可重杨坤赵晓路徐建中
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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