JP2000018147A - Failure prediction method of a blade for wind power generation system - Google Patents
Failure prediction method of a blade for wind power generation systemInfo
- Publication number
- JP2000018147A JP2000018147A JP10191367A JP19136798A JP2000018147A JP 2000018147 A JP2000018147 A JP 2000018147A JP 10191367 A JP10191367 A JP 10191367A JP 19136798 A JP19136798 A JP 19136798A JP 2000018147 A JP2000018147 A JP 2000018147A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- light
- wind power
- power generation
- optical system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Wind Motors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は風力発電システムにお
ける風車ブレ−ドの破損予知方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for predicting breakage of a wind turbine blade in a wind power generation system.
【０００２】[0002]
【従来の技術】現在、石油エネルギ−に替わる新エネル
ギ−利用の研究が進められており、そのひとつに風力エ
ネルギ−が挙げられる。風力発電装置は海外では普及し
つつあるが日本国内では普及段階に至っていない。その
主な理由として日本特有の風況が挙げられるが、騒音や
安全対策も大きなネックになっている。安全対策で最も
重要視されるのは、回転部品の破壊であり、特にブレ−
ドの折損は周囲に大きな被害をもたらすと考えられるの
で、風力発電システムを普及させるためには、この重大
事故を引き起こすブレ−ドの破損、折損は絶対に避けな
ければならない。2. Description of the Related Art At present, research on utilization of new energy in place of petroleum energy is in progress, one of which is wind energy. Wind power generators are spreading overseas, but have not reached the stage of diffusion in Japan. The main reason is the unique wind conditions in Japan, but noise and safety measures are also a major bottleneck. The most important safety measure is the destruction of rotating parts, especially
Since breakage of the blade is considered to cause great damage to the surroundings, breakage and breakage of the blade causing this serious accident must be avoided in order to spread the wind power generation system.
【０００３】[0003]
【解決すべき課題】現在日本国内に設置されている風力
発電装置は、試験的要素が強いため、メンテナンスは係
員が各発電装置を巡回して行っている。しかし風力発電
システムを普及させるためには、メンテナンスの自動化
が不可欠である。特に重大事故を引き起こすブレ−ドの
破損、折損は絶対に避けなければならず、そのためには
ブレ−ドを常時状態監視することが望ましく、き裂が発
生した場合には警報を発し、運転を停止するシステムが
必要である。しかるに現在までのところ、メンテナンス
の自動化を可能にするほどの良好な、信頼性の高い常時
状態監視システムは開発されていない。この発明は上記
の如き事情に鑑みてなされたものであって、風力発電シ
ステムのメンテナンスの自動化を可能にする信頼性の高
いブレ−ドの常時状態監視を実現することができる風力
発電システム用ブレ−ドの破損予知方法を提供すること
を目的とするものである。[Problems to be Solved] The wind power generators currently installed in Japan have a strong experimental element, and maintenance is performed by staff in charge of each power generator. However, in order to spread wind power generation systems, automation of maintenance is indispensable. In particular, the damage and breakage of the blade that may cause a serious accident must be absolutely avoided. For this purpose, it is desirable to constantly monitor the state of the blade. Need a system to shut down. However, to date, no reliable and reliable state monitoring system has been developed that is capable of automating maintenance. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and is a blade for a wind power generation system capable of realizing highly reliable constant state monitoring of a blade capable of automating maintenance of the wind power generation system. It is an object of the present invention to provide a method for predicting breakage of a node.
【０００４】[0004]
【課題を解決すべき手段】この発明は上記の如き事情に
鑑みてなされたものであって、この目的に対応してこの
発明の風力発電システムブレ−ドの破損予知方法は、ブ
レ−ドに埋め込んだ光ファイバ−と前記光ファイバ−に
光を入射する発光側光学系と前記光ファイバ−からの光
を受光する受光側光学系を使用し、前記受光側光学系の
出力からブレ−ドの破損を予知することを特徴としてい
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in response to this object, a method for predicting breakage of a wind power generation system blade according to the present invention has been disclosed. An embedded optical fiber, a light emitting side optical system for entering light into the optical fiber, and a light receiving side optical system for receiving light from the optical fiber are used. It is characterized by predicting damage.
【０００５】[0005]
【実施の態様】以下、この発明の詳細を一実施例の図面
にもとづいて説明する。図１において、１は風力発電シ
ステム用ブレ−ドの破損予知システムである。破損予知
システム１は１本若しくは複数本の光ファイバ−２ａ，
２ｂ…と発光側光学系３と受光側光学系４と、情報処理
ユニット５とを備えている。光ファイバ−２ａ，２ｂは
風車のブレ−ド６に埋め込まれており、ブレ−ド６は風
車のロ−タ（図示せず）に取り付けられるものである。
１本若しくは複数本の光ファイバ−２ａ，２ｂ…は、ブ
レ−ド６の破損が予想される箇所や特に大きな応力が発
生することが予想される箇所を含む領域にブレ−ド製造
工程で埋め込まれる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings of one embodiment. In FIG. 1, reference numeral 1 denotes a blade damage prediction system for a wind power generation system. The damage prediction system 1 includes one or more optical fibers-2a,
, A light emitting side optical system 3, a light receiving side optical system 4, and an information processing unit 5. The optical fibers 2a and 2b are embedded in a blade 6 of a wind turbine, and the blade 6 is attached to a rotor (not shown) of the wind turbine.
One or a plurality of optical fibers-2a, 2b,... Are embedded in a region including a portion where the blade 6 is expected to be damaged or a portion where a particularly large stress is expected to be generated in the blade manufacturing process. It is.
【０００６】発光側光学系３はランプや発光ダイオ−ド
等を使用して光ファイバ−２ａ，２ｂ…の一端に光を入
射する光学系であって、ブレ−ド６に対して相対変位の
小さい部材例えばロ−タに固定されている。受光側光学
系４は光ファイバ−２ａ，２ｂ…の他端から出射した光
を受光するための光学系であってブレ−ド６に対して相
対変位の小さい部材例えばロ−タに取り付けられてい
る。発光側光学系３及び受光側光学系４は有線または無
線で情報処理ユニット５に接続している。The light-emitting side optical system 3 is an optical system that uses a lamp, a light-emitting diode or the like to make light incident on one end of the optical fibers 2a, 2b,. It is fixed to a small member such as a rotor. The light receiving side optical system 4 is an optical system for receiving light emitted from the other ends of the optical fibers -2a, 2b... And is attached to a member having a small relative displacement with respect to the blade 6, for example, a rotor. I have. The light emitting side optical system 3 and the light receiving side optical system 4 are connected to the information processing unit 5 by wire or wirelessly.
【０００７】このように構成された破損予知システム１
においてブレ−ドの破損予知は次のようにしてなされ
る。[0007] The damage prediction system 1 configured as described above.
The damage prediction of the blade is made as follows.
【０００８】情報処理ユニット５からの指令によって発
光側光学系３が発光した光が連続光またはパルス光とし
て順次にまたはすべての光ファイバ−２ａ，２ｂ…に同
時に入射される。入射した光は光ファイバ−２ａ，２ｂ
…を通して他端から出射する。受光側光学系４は情報処
理ユニット５の指令によりそれぞれの光ファイバ−２
ａ，２ｂ…からの出射光を同時にまたは順次切り替えて
受光する。受光した光の信号、例えば光量は情報処理ユ
ニット５に入力される。ブレ−ド６に過剰の外力が作用
しあるいは疲労によってクラックが発生、進展して光フ
ァイバ−２ａ，２ｂ…が破断したり、損傷し、これによ
って、光ファイバ−２ａ，２ｂ…の光伝送性能が低下
し、受光側光学系４の受光量が減少するので、情報処理
ユニット５が基準値と比較して光ファイバ−２ａ，２ｂ
…の破損すなわちブレ−ド６の破損と判断して、信号を
発し、ブレ−ドの破損を予知し、風車の運転を停止させ
る。光ファイバ−２ａ，２ｂ…を複数本並べて用いる場
合にはそれぞれの光ファイバ−２ａ，２ｂ…からの受光
量の差異によってブレ−ド６の破損の進行情況を検出す
ることができる。 （実験例）ブレ−ドの長手方向に沿って２本の光ファイ
バ−を固定し、ブレ−ドにねじりを繰り返して与えた状
態で光ファイバ−の一端から光を入射し他端からの受光
量を測定した。図２に示すように、ブレ−ドはｎ回の揺
動回数で破損したが、それに先立って、ファイバ１には
揺動回数ｎ−７回で受光量に変動が生じた。またファイ
バ２では揺動回数ｎ−９回で受光量の減少が生じた。The light emitted by the light emitting side optical system 3 in response to a command from the information processing unit 5 is sequentially or simultaneously incident on all the optical fibers -2a, 2b,... As continuous light or pulsed light. The incident light is an optical fiber-2a, 2b
... and exit from the other end. The light receiving side optical system 4 is controlled by the information processing unit 5 so that each optical fiber-2
a, 2b ... are simultaneously or sequentially switched and received. A signal of the received light, for example, a light amount is input to the information processing unit 5. An excessive external force acts on the blade 6 or a crack is generated and propagated by fatigue, so that the optical fibers -2a, 2b ... are broken or damaged, and thereby the optical transmission performance of the optical fibers -2a, 2b ... And the light receiving amount of the light receiving side optical system 4 decreases, and the information processing unit 5 compares the optical fiber-2a, 2b
, That is, the blade 6 is damaged, a signal is issued to predict the blade damage, and the operation of the windmill is stopped. When a plurality of optical fibers -2a, 2b ... are used side by side, the progress of the damage of the blade 6 can be detected from the difference in the amount of light received from each of the optical fibers -2a, 2b .... (Experimental example) Two optical fibers are fixed along the longitudinal direction of the blade, light is incident from one end of the optical fiber and light is received from the other end while the blade is repeatedly twisted. The amount was measured. As shown in FIG. 2, the blade was broken at the number of swings of n times, but before that, the received light amount fluctuated in the fiber 1 at the number of swings of n-7. In the case of the fiber 2, the amount of received light decreased when the number of swings was n-9.
【０００９】これらのことからファイバ−からの受光量
の変化を観察することによって、ブレ−ドにおけるクラ
ックの進行状況を検知し、ブレ−ドの破損を予知できる
ことが明らかとなった。From these results, it has become clear that by observing the change in the amount of light received from the fiber, it is possible to detect the progress of the crack in the blade and predict the breakage of the blade.
【００１０】[0010]
【発明の効果】以上の説明から明らかな通り、この発明
によれば風力発電システムのメンテナンスの自動化を可
能にする信頼性の高い常時状態監視を実現することがで
きる風力発電システム用ブレ−ドの破損予知方法を得る
ことができる。As is apparent from the above description, according to the present invention, there is provided a blade for a wind power generation system capable of realizing a reliable and always-on state monitoring enabling automation of maintenance of the wind power generation system. A damage prediction method can be obtained.
【図１】この発明の破損予知装置を示す構成説明図FIG. 1 is a configuration explanatory view showing a damage prediction device of the present invention.
【図２】受光量の変化を示すグラフFIG. 2 is a graph showing a change in the amount of received light.
１ 破損予知システム ２ａ，２ｂ… 光ファイバ− ３ 発光側光学系 ４ 受光側光学系 ５ 情報処理ユニット ６ ブレ−ド DESCRIPTION OF SYMBOLS 1 Damage prediction system 2a, 2b ... Optical fiber-3 Light emitting side optical system 4 Light receiving side optical system 5 Information processing unit 6 Blade
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１０年７月１５日（１９９８．７．１
５）[Submission date] July 15, 1998 (1998.7.1)
5)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】情報処理ユニット５からの指令によって発
光側光学系３が発光した光が連続光またはパルス光とし
て順次にまたはすべての光ファイバ−２ａ，２ｂ…に同
時に入射される。入射した光は光ファイバ−２ａ，２ｂ
…を通して他端から出射する。受光側光学系４は情報処
理ユニット５の指令によりそれぞれの光ファイバ−２
ａ，２ｂ…からの出射光を同時にまたは順次切り替えて
受光する。受光した光の信号、例えば光量は情報処理ユ
ニット５に入力される。ブレ−ド６に過剰の外力が作用
しあるいは疲労によってクラックが発生・進展して光フ
ァイバ−２ａ，２ｂ…が破断したり、損傷し、これによ
って、光ファイバ−２ａ，２ｂ…の光伝送性能が低下
し、受光側光学系４の受光量が減少するので、情報処理
ユニット５が基準値と比較して光ファイバ−２ａ，２ｂ
…の破損すなわちブレ−ド６の破損と判断して、信号を
発し、ブレ−ドの破損を予知し、風車の運転を停止させ
る。光ファイバ−２ａ，２ｂ…を複数本並べて用いる場
合にはそれぞれの光ファイバ−２ａ，２ｂ…からの受光
量の差異によってブレ−ド６の破損の進行情況を検出す
ることができる。The light emitted by the light emitting side optical system 3 in response to a command from the information processing unit 5 is sequentially or simultaneously incident on all the optical fibers -2a, 2b,... As continuous light or pulsed light. The incident light is an optical fiber-2a, 2b
... and exit from the other end. The light receiving side optical system 4 is controlled by the information processing unit 5 so that each optical fiber-2
a, 2b ... are simultaneously or sequentially switched and received. A signal of the received light, for example, a light amount is input to the information processing unit 5. Blur - excessive external force to de 6 acts or optical fiber -2a and cracks occur and progress by fatigue, or 2b ... breaking, damage, thereby, the optical fiber -2a, 2b ... optical transmission performance of the And the light receiving amount of the light receiving side optical system 4 decreases, and the information processing unit 5 compares the optical fiber-2a, 2b
, That is, the blade 6 is damaged, a signal is issued to predict the blade damage, and the operation of the windmill is stopped. When a plurality of optical fibers -2a, 2b ... are used side by side, the progress of the damage of the blade 6 can be detected from the difference in the amount of light received from each of the optical fibers -2a, 2b ....
【手続補正書】[Procedure amendment]
【提出日】平成１１年５月２１日（１９９９．５．２
１）[Submission date] May 21, 1999 (1999.5.2
1)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００４】[0004]
【課題を解決するための手段】この目的に対応してこの
発明の風力発電システムブレードの破損予知方法は、ブ
レードの破損が予想される箇所や他の箇所よりも大きな
応力が発生することが予想される箇所に複数本並べて埋
め込んだ光ファイバーと前記光ファイバーに光を入射す
る発光側光学系と前記光ファイバーからの光を受光する
受光側光学系を使用し、前記受光側光学系の出力から検
出される複数本の光ファイバー間の受光量の差異によっ
てブレードの破損の進行情況を検出してブレードの破損
を予知することを特徴としている。SUMMARY OF THE INVENTION In accordance with this object, a wind power generation system blade damage predicting method according to the present invention is larger than a portion where blade damage is expected or other portions.
Using a plurality of optical fibers arranged and embedded in a place where stress is expected to occur, a light emitting side optical system for entering light into the optical fiber, and a light receiving side optical system for receiving light from the optical fiber and, detection from the output of the light receiving side optical system
Due to the difference in the amount of received light between multiple
And detecting the progress of the damage of the blade to predict the damage of the blade.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松宮 ひかる 茨城県つくば市並木１丁目２番地 工業技 術院機械技術研究所内 (72)発明者 水谷 八郎 茨城県つくば市並木１丁目２番地 工業技 術院機械技術研究所内 Ｆターム(参考） 3H078 AA01 AA05 AA26 BB16 BB17 CC02 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Hikaru Matsumiya 1-2-2 Namiki, Tsukuba, Ibaraki Pref. Machinery Research Institute, Industrial Technology Institute (72) Hachiro Mizutani 1-2-2 Namiki, Tsukuba-City, Ibaraki Industrial Technology F-term in the Institute of Mechanical Engineering (Reference) 3H078 AA01 AA05 AA26 BB16 BB17 CC02
Claims (1)
記光ファイバ−に光を入射する発光側光学系と前記光フ
ァイバ−からの光を受光する受光側光学系を使用し、前
記受光側光学系の出力からブレ−ドの破損を予知するこ
とを特徴とする風力発電システム用ブレ−ドの破損予知
方法。An optical fiber embedded in a blade, a light emitting side optical system for entering light into the optical fiber, and a light receiving side optical system for receiving light from the optical fiber, wherein the light receiving side is used. A blade damage prediction method for a wind power generation system, comprising predicting blade damage from an output of an optical system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10191367A JP2000018147A (en) | 1998-07-07 | 1998-07-07 | Failure prediction method of a blade for wind power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10191367A JP2000018147A (en) | 1998-07-07 | 1998-07-07 | Failure prediction method of a blade for wind power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000018147A true JP2000018147A (en) | 2000-01-18 |
Family
ID=16273413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10191367A Pending JP2000018147A (en) | 1998-07-07 | 1998-07-07 | Failure prediction method of a blade for wind power generation system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000018147A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005511968A (en) * | 2001-12-08 | 2005-04-28 | アロイス・ヴォベン | Rotor blade and wind power generator having rotor blade |
| EP1857672A2 (en) * | 2006-05-18 | 2007-11-21 | Daubner & Stommel GbR Bau-Werk-Planung | Wind turbine, component for a wind turbine and method of operating a wind turbine with such a component |
| US7594797B2 (en) | 2002-12-18 | 2009-09-29 | Aloys Wobben | Load sensing on a rotor blade of a wind power plant |
| JP2010540841A (en) * | 2007-10-09 | 2010-12-24 | シーメンス アクチエンゲゼルシヤフト | Wind turbine blade frequency monitoring method |
| JP2014509705A (en) * | 2011-04-01 | 2014-04-21 | ヴォッベン プロパティーズ ゲーエムベーハー | Wind power generator |
-
1998
- 1998-07-07 JP JP10191367A patent/JP2000018147A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005511968A (en) * | 2001-12-08 | 2005-04-28 | アロイス・ヴォベン | Rotor blade and wind power generator having rotor blade |
| EP2161447A3 (en) * | 2001-12-08 | 2014-12-03 | Aloys Wobben | Rotor blade of a wind power installation, comprising a warning light |
| US7594797B2 (en) | 2002-12-18 | 2009-09-29 | Aloys Wobben | Load sensing on a rotor blade of a wind power plant |
| KR100921432B1 (en) | 2002-12-18 | 2009-10-14 | 알로이즈 워벤 | Rotor Blade of a Wind Power Plant |
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| EP1857672A2 (en) * | 2006-05-18 | 2007-11-21 | Daubner & Stommel GbR Bau-Werk-Planung | Wind turbine, component for a wind turbine and method of operating a wind turbine with such a component |
| EP1857672A3 (en) * | 2006-05-18 | 2012-12-12 | Daubner & Stommel GbR Bau-Werk-Planung | Wind turbine, component for a wind turbine and method of operating a wind turbine with such a component |
| JP2010540841A (en) * | 2007-10-09 | 2010-12-24 | シーメンス アクチエンゲゼルシヤフト | Wind turbine blade frequency monitoring method |
| US8286494B2 (en) | 2007-10-09 | 2012-10-16 | Siemens Aktiengesellschaft | Monitoring of blade frequencies of a wind turbine |
| JP2014509705A (en) * | 2011-04-01 | 2014-04-21 | ヴォッベン プロパティーズ ゲーエムベーハー | Wind power generator |
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