CN206487596U - 一种风力发电机组的叶片防雷系统 - Google Patents

一种风力发电机组的叶片防雷系统 Download PDF

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CN206487596U
CN206487596U CN201720131131.2U CN201720131131U CN206487596U CN 206487596 U CN206487596 U CN 206487596U CN 201720131131 U CN201720131131 U CN 201720131131U CN 206487596 U CN206487596 U CN 206487596U
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lightning
ionization
blade
thundercloud
protection system
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张晓飞
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Yantai Zhulong Wind Power Co.,Ltd.
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SHANDONG GUOFENG WIND POWER EQUIPMENT Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

本实用新型提供了一种风力发电机组的叶片防雷系统，包括风机叶片、接地系统，所述叶片尖端及边缘安有避雷针，叶片与离子化装置相连，离子化装置通过连接线与接地系统相连。本实用新型的离子化装置在雷云强电场中大致保持着大地电位，它和附近空气的电位差会随雷云电场强度激增而促使场强区内提前放电避雷针附近的空气电离，形成大量空间电荷，一般雷云下层为负电荷，地面感应产生正电荷，电离的负电荷为地电流收集装置所吸收，电离的正电荷为雷云负电荷所吸引和中和，从而发生消雷作用。这种防雷系统不仅降低了成本、减少了零件、故障少，而且安装维护简单，效果明显。

Description

一种风力发电机组的叶片防雷系统
技术领域
本实用新型属于风力发电设备技术领域，具体地说涉及一种风力发电机组的叶片防雷系统。
背景技术
风力发电机组是风电场的贵重设备，价格占风电工程投资的60%以上，而风机叶片是风力发电机组中最重要的组成部分，是风力发电机组发电的基础。由于大型风机叶片离地高度在120米以上，是风力发电机组上最容易受到雷击的部件。在整个风力发电机组的雷击损坏维修成本中，它的损坏维修费用所占额度最高，超过100万元。
现有风机叶片雷击保护设计原理是雷电从叶片上的接闪器通过引导线导入叶片根部金属法兰，通过轮毂、主轴传至机舱，再通过偏航轴承和塔架最终导入接地网。现有技术不能避免雷击，只能通过保护系统控制雷击点来减少雷电对机组叶片的损坏，当雷电击中接闪器之外的叶片部分或雷电电流过大时，叶片会发生严重损毁。现有风机叶片防雷设计投资费用高，需经常维护，保护范围小，易发生雷击事故且维修费用高昂。
发明内容
本实用新型提供了一种风力发电机组的叶片防雷系统，解决了背景技术中的风力发电机组保护范围小、易损坏、维修费用高昂的缺点。
本实用新型的技术方案是这样实现的：一种风力发电机组的叶片防雷系统，包括风机叶片、接地系统，所述叶片尖端及边缘安有避雷针，叶片与离子化装置相连，离子化装置通过连接线与接地系统相连。
本实用新型的有益效果是：本实用新型的离子化装置在雷云强电场中大致保持着大地电位，它和附近空气的电位差会随雷云电场强度激增而促使场强区内提前放电避雷针附近的空气电离，形成大量空间电荷，一般雷云下层为负电荷，地面感应产生正电荷，电离的负电荷为地电流收集装置所吸收，电离的正电荷为雷云负电荷所吸引和中和，从而发生消雷作用。这种防雷系统不仅降低了成本、减少了零件、故障少，而且安装维护简单，效果明显。
附图说明
图1为本实用新型的结构示意图。
零件说明：1、避雷针，2、离子化装置，3、连接线，4、接地系统，5、叶片。
具体实施方式
为了更好地理解与实施，下面结合附图对本实用新型作进一步描述：一种风力发电机组的叶片防雷系统，包括叶片5，电避雷针1位于叶片5尖端及边缘部分，叶片5与离子化装置2相连，离子化装置2通过连接线与接地系统4相连。
在雷云电场作用下，当尖端场强达到一定值时，周围空气发生游离后，在电场力的作用下离去，而接替它的其它空气分子相继又被游离。如此下去，从金属尖端向周围有离子电流流去。随着电位的升高，离子电流按指数规律增加。当雷电出现在叶片上空时，避雷针及附近大地均感应出与雷云电荷极性相反的电荷。连接避雷针的离子化装置使大地的大量电荷在雷云电场作用下，由针状电极发射出去，向雷云方向运动，使雷云被中和，雷电场减弱，从而防止了被保护物遭受雷击。
本实用新型使雷电冲击放电的微秒·千安级瞬变过程转化为秒·安级的缓慢放电过程，因而使被保护物上可能出现的感应过电压降低到无危害的水平，达到“防雷消灾”的目的。

Claims (1)

1.一种风力发电机组的叶片防雷系统，包括风机叶片（5）、接地系统（4），其特征在于所述叶片（5）尖端及边缘安有避雷针（1），叶片（5）与离子化装置（2）相连，离子化装置（2）通过连接线与接地系统（4）相连。
CN201720131131.2U 2017-02-14 2017-02-14 一种风力发电机组的叶片防雷系统 Active CN206487596U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111102132A (zh) * 2020-01-17 2020-05-05 金华落日新能源科技有限公司 一种用于风力发电装置的紧急电力保护装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111102132A (zh) * 2020-01-17 2020-05-05 金华落日新能源科技有限公司 一种用于风力发电装置的紧急电力保护装置

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