JP2008025993A - Lightning detection device for blade - Google Patents

Lightning detection device for blade Download PDF

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JP2008025993A
JP2008025993A JP2006195048A JP2006195048A JP2008025993A JP 2008025993 A JP2008025993 A JP 2008025993A JP 2006195048 A JP2006195048 A JP 2006195048A JP 2006195048 A JP2006195048 A JP 2006195048A JP 2008025993 A JP2008025993 A JP 2008025993A
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blade
lightning
data transmission
detection device
information
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JP2006195048A
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Satoyuki Ubara
智行 茆原
Tetsuo Yoshida
哲男 吉田
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PHOTONICS KK
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PHOTONICS KK
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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

Abstract

<P>PROBLEM TO BE SOLVED: To monitor the history of lightning or integrated energy of lightning for every blade. <P>SOLUTION: A lightning detection device for blades comprises: a Rogowskii coil 6 equipped on each of plurality of blades 3-1, 3-2, constituting a windmill; a data transmission device 10 which is equipped on each rotor part of the windmill temporary stores the information of energy of lightnings based on the signals from the Rogowskii coil 6 and transmits the information when the blade concerned is moved to the prescribed position; and a receiving device 20 for receiving the signal from each data transmission device 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、風力発電用の風車などの羽根への落雷を検出するための装置に関する。   The present invention relates to an apparatus for detecting a lightning strike on a blade of a wind turbine for wind power generation.

風力発電装置は、鉄塔上に発電機を搭載し、その動力軸にハブを介して長尺のブレードを複数枚固定して構成されている。
このため、ブレードの先端は鉄塔よりもさらにかなり高所に位置するため、被雷しやすい。被雷によりブレードが破損した場合は別として、小規模な被雷を複数回受けて徐々に破損する。
このため、風力発電所では、現場の雷情報及び機器の障害状況情報に基づいてに被雷の可能性が確認された場合には、運転を中止してブレードを目視により検査したり、またブレードの回転風きり音の変化を検出するなどの五感により検査されていた。 The wind power generator is configured by mounting a generator on a steel tower and fixing a plurality of long blades to the power shaft via a hub.
For this reason, since the tip of the blade is located at a considerably higher position than the steel tower, it is easy to be subjected to lightning. Aside from the case where the blade is damaged by lightning, the blade is gradually damaged by multiple small lightning strikes.
For this reason, in the wind power plant, if the possibility of lightning strike is confirmed based on on-site lightning information and equipment failure status information, the operation is stopped and the blade is visually inspected. It was inspected by the five senses, such as detecting changes in the wind noise of the wind.

しかしながら、たとえブレードが被雷を受けたとしても、明瞭な被雷痕が発生していない場合もあり、また被雷痕だけでは雷エネルギーの定量的把握もできないため、経時劣化が進み、最終的にはブレードが破損するという大事故に繋がるケースがあり、信頼性に不安が生じるという問題がある。
本発明はこのような問題に鑑みてなされたものであって、その目的とするところはブレード毎の被雷の経歴や積算被雷エネルギを監視することができるブレードの被雷検知装置を提供することである。 However, even if the blades are exposed to lightning, there may be no clear lightning traces, and it is not possible to quantitatively grasp lightning energy with only lightning traces. There is a case that leads to a serious accident that the blade is broken, and there is a problem that reliability is uneasy.
The present invention has been made in view of such problems, and an object of the present invention is to provide a lightning detection device for a blade capable of monitoring the lightning history and accumulated lightning energy for each blade. That is.

このような課題を達成するために請求項１の発明は、風車を構成する複数のブレードのそれぞれに設けられたロゴスキコイルと、前記風車の回動部分に設けられ、前記ロゴスキコイルからの信号に基づいて雷エネルギに関する情報を一時記憶し、当該ブレードが規定の位置に移動した時点で前記情報を外部に送信するデータ送信手段と、前記データ送信手段からの信号を受信する受信手段とを備える。   In order to achieve such a problem, the invention of claim 1 is based on a Rogowski coil provided on each of a plurality of blades constituting a windmill, and a rotation part of the windmill, and based on a signal from the Rogowski coil. It includes data transmission means for temporarily storing information on lightning energy and transmitting the information to the outside when the blade moves to a specified position, and reception means for receiving a signal from the data transmission means.

請求項２の発明は、前記データ送信手段が計時手段を備え、被雷時の時刻をも送信する。   According to a second aspect of the present invention, the data transmitting means includes a time measuring means for transmitting the time of lightning.

請求項３の発明は、前記受信手段が、前記データ送信手段に対して送信命令を出力し、また前記データ送信手段が前記送信命令に基づいて前記情報を送信する請求項１に記載のブレードの被雷検出装置。   According to a third aspect of the present invention, in the blade according to the first aspect, the receiving unit outputs a transmission command to the data transmission unit, and the data transmission unit transmits the information based on the transmission command. Lightning detection device.

請求項４の発明は、前記規定の位置が、前記ブレードの下死点である。   According to a fourth aspect of the present invention, the prescribed position is a bottom dead center of the blade.

請求項１の発明によれば、風車を構成する各ブレード毎の被雷の履歴や積算の雷エネルギを検出することができ、外見からはわからない損傷を容易に検出することができ、ブレードの破損といった事故を未然に防止することができる。   According to the invention of claim 1, it is possible to detect the lightning history and accumulated lightning energy for each blade constituting the windmill, easily detect damage that is not apparent from the appearance, and breakage of the blade Such accidents can be prevented in advance.

請求項２の発明によれば、被雷時刻を正確に検出できる。   According to the invention of claim 2, the lightning strike time can be accurately detected.

請求項３の発明によれば、同一構造の手段でブレード毎の情報を区別して受信することができる。   According to the invention of claim 3, information of each blade can be distinguished and received by means of the same structure.

請求項４の発明によれば、被雷の恐れの無い位置で記憶手段の情報を送信させため、信頼性の高い情報を得ることができる。   According to the invention of claim 4, since the information in the storage means is transmitted at a position where there is no fear of lightning, highly reliable information can be obtained.

図１は、本発明のブレードの被雷検知装置が適用される風力発電設備の一例を示すものであって、塔脚１の上部にはナセル装置２、及び風車３が設置されている。ナセル装置２は、周知のように風車３のロータ４に変速機を介して接続された発電機や、ヨー駆動装置等を収容して構成されている。風車３は、複数枚のブレード３−１，３−２，３−３をロータ４に取り付けて構成されている。   FIG. 1 shows an example of a wind power generation facility to which a lightning detection device for a blade according to the present invention is applied. A nacelle device 2 and a windmill 3 are installed on the top of a tower 1. As is well known, the nacelle device 2 is configured to accommodate a generator connected to the rotor 4 of the windmill 3 via a transmission, a yaw drive device, and the like. The windmill 3 is configured by attaching a plurality of blades 3-1, 3-2 and 3-3 to the rotor 4.

各ブレード３−１，３−２，３−３をロータ４の根元にはこれが貫通するようにロゴスキーコイル６が設けられおり、各コイル６は、リード８を介してカバーの内部に引き込まれてそれぞれに光データ送信手段、または電磁波データ送信手段を備えたデータ送信装置１０が接続されている。データ送信装置１０は、ブレードそれ自体またはロータ４などに固定されていて、ブレードと同期して回動するようになっている。   A Rogowski coil 6 is provided at the base of the rotor 4 so that each blade 3-1, 3-2, 3-3 penetrates through the blade 4. A data transmission device 10 having optical data transmission means or electromagnetic wave data transmission means is connected to each of them. The data transmission device 10 is fixed to the blade itself or the rotor 4 and is rotated in synchronization with the blade.

データ送信装置１０は、ロゴスキーコイル６からの信号を積分する積分器１１と、計時手段１２と、各ブレードを特定するための情報、例えばブレードナンバーを予め格納されていて積分器１１、及び計時手段１２からのデータを随時格納する記憶手段１３と、後述する受信装置からの送信指令を受けて記憶手段１３のデータを送信するデータ送信手段１４とにより構成されている。   The data transmitting apparatus 10 includes an integrator 11 that integrates a signal from the Rogowski coil 6, a time measuring unit 12, information for specifying each blade, for example, a blade number stored in advance, the integrator 11, and a time measuring unit. The storage unit 13 stores data from the unit 12 as needed, and the data transmission unit 14 transmits a data stored in the storage unit 13 in response to a transmission command from a receiving apparatus described later.

なお、図中符号１５は、データ送信装置１０に駆動電力を供給する電源装置で、外部から照射された電磁波、光エネルギを電力に変換したり、また風車の回動により移動する磁石と、この磁石の磁束に作用するコイルとからなるダイナモ等により構成することができる。   Reference numeral 15 in the figure denotes a power supply device that supplies driving power to the data transmission device 10, which converts electromagnetic waves and light energy irradiated from the outside into electric power, and a magnet that moves by rotation of a windmill, It can be constituted by a dynamo composed of a coil acting on the magnetic flux of the magnet.

また、ブレード３−１〜３−３もしくはロータなどのブレードと同期回動する領域には、データ送信装置１０からのデータを受信する受信装置２０が設置され、受信装置で受信したデータをケーブルにより塔脚１の下部に設置されたデータロガ２２に送信するように構成されている。   A receiving device 20 that receives data from the data transmitting device 10 is installed in an area that rotates synchronously with the blades 3-1 to 3-3 or a blade such as a rotor, and the data received by the receiving device is transmitted by a cable. It is comprised so that it may transmit to the data logger 22 installed in the lower part of the tower base 1.

この実施例において、雷雲が発生すると、通常の場合は下死点以外の位置のブレード３−１が被雷しやすい。ブレードが被雷すると雷電流がブレード、ハブ、ロータ及び塔脚を流れ、この雷電流は、当該ブレードに設けられているロゴスキーコイル６により検出され、積分器１１により積分され、同時に被雷時の時刻が検出され、それぞれ記憶手段１３に一時的に格納される。   In this embodiment, when a thundercloud is generated, the blade 3-1 at a position other than the bottom dead center is likely to receive lightning in a normal case. When a blade is subjected to lightning, a lightning current flows through the blade, hub, rotor and tower, and this lightning current is detected by a Rogowski coil 6 provided on the blade, integrated by an integrator 11, and at the same time during lightning. Are detected and stored in the storage means 13 temporarily.

当該ブレード３−１が下死点に到達すると、受信装置２０がブレードが下死点に到達したことを検出して送信命令を出力する。これにより送信装置１０が記憶手段１３に格納されている被雷時刻、雷電流データ、ブレードナンバなどのデータを受信装置２０に送信し、各ブレードの被雷情報が塔脚１のデータロガ２２に順次格納されていく。   When the blade 3-1 reaches the bottom dead center, the receiving device 20 detects that the blade has reached the bottom dead center and outputs a transmission command. As a result, the transmitting device 10 transmits the lightning time, lightning current data, blade number, and other data stored in the storage means 13 to the receiving device 20, and the lightning information of each blade is sequentially sent to the data logger 22 of the tower 1. It will be stored.

言うまでも無く、ブレードが下死点に位置している状態では、被雷の恐れが極めて低いため、検出途中のデータを送信するようなことがなく、上死点で既に被雷したときのデータを送信することができ、高い信頼性を確保できる。   Needless to say, when the blade is at the bottom dead center, the risk of lightning is very low, so there is no transmission of data in the middle of detection. Data can be transmitted, ensuring high reliability.

このようにデータロガ２２には各ブレード毎に被雷した雷に関するデータが蓄積されているため、破損に至ることがなく、かつ外見からは判別できない損傷をブレードが受けても、被雷の経歴に基づいて損傷の程度を正確に推定でき、ブレードの破壊という大事故を未然に防止することができる。   In this way, since the data logger 22 stores data on the lightning strikes for each blade, even if the blades suffer damage that does not cause damage and cannot be identified from the appearance, Based on this, it is possible to accurately estimate the degree of damage and prevent a major accident of blade destruction.

なお、上述に実施例においてはブレードにだけロゴスキーコイルは配置しているが、必要に応じて塔脚を貫通させるように塔脚１の基部にロゴスキーコイルを配置するのが望ましい。   In the embodiment described above, the Rogowski coil is arranged only on the blade, but it is desirable to arrange the Rogowski coil at the base of the tower pedestal 1 so as to penetrate the tower pedestal as necessary.

本発明の装置が適用される風力発電装置の一例を示す図である。It is a figure which shows an example of the wind power generator to which the apparatus of this invention is applied. 本発明のブレードの被雷検知装置の一実施例を示すブロック図である。It is a block diagram which shows one Example of the lightning strike detection apparatus of the braid | blade of this invention.

符号の説明Explanation of symbols

３−１〜３−３ ブレード ４ ロータ ６ ロゴスキーコイル
１０ データ送信装置 ２０ 受信装置 3-1 to 3-3 Blade 4 Rotor 6 Rogowski coil 10 Data transmission device 20 Reception device

Claims (4)

風車を構成する複数のブレードのそれぞれに設けられたロゴスキコイルと、前記風車の回動部分に設けられ、前記ロゴスキコイルからの信号に基づいて雷エネルギに関する情報を一時記憶し、当該ブレードが規定の位置に移動した時点で前記情報を外部に送信するデータ送信手段と、
前記データ送信手段からの信号を受信する受信手段とからなるブレードの被雷検知装置。 A Rogowski coil provided in each of a plurality of blades constituting the windmill and a rotating part of the windmill, and temporarily storing information on lightning energy based on a signal from the Rogowski coil, the blade is placed at a specified position. Data transmission means for transmitting the information to the outside at the time of movement;
A lightning detection device for a blade comprising receiving means for receiving a signal from the data transmitting means. 前記データ送信手段が計時手段を備え、被雷時の時刻をも送信する請求項１に記載のブレードの被雷検知装置。   The blade lightning detection device according to claim 1, wherein the data transmission unit includes a timing unit and transmits the time of lightning. 前記受信手段が、前記データ送信手段に対して送信命令を出力し、また前記データ送信手段が前記送信命令に基づいて前記情報を送信する請求項１に記載のブレードの被雷検出装置。   2. The lightning detection device for a blade according to claim 1, wherein the reception unit outputs a transmission command to the data transmission unit, and the data transmission unit transmits the information based on the transmission command. 前記規定の位置が、前記ブレードの下死点である請求項１に記載のブレードの被雷検出装置。   The blade lightning detection device according to claim 1, wherein the specified position is a bottom dead center of the blade.
JP2006195048A 2006-07-18 2006-07-18 Lightning detection device for blade Pending JP2008025993A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58121373A (en) * 1981-12-14 1983-07-19 Sakamoto Fukuo Liquefied petroleum gas safety device against earthquake by shutting-off
JP2008153010A (en) * 2006-12-15 2008-07-03 Toko Electric Corp Blade-thunderstroke monitoring device and thunderstroke monitoring system
JP2009203893A (en) * 2008-02-28 2009-09-10 Toko Electric Corp Blade lightning stroke monitor and wind turbine generator system
US8327710B2 (en) 2010-07-29 2012-12-11 General Electric Company System for estimating a condition of non-conductive hollow structure exposed to a lightning strike
WO2014024303A1 (en) * 2012-08-10 2014-02-13 三菱重工業株式会社 State observation system and state observation method for wind power generation device
JP2015129493A (en) * 2014-01-09 2015-07-16 株式会社日立製作所 Abnormal degree determination system and method for wind power generator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000265938A (en) * 1999-03-17 2000-09-26 Hitachi Ltd Thunder protection system of wind power generation
JP2001349775A (en) * 2000-06-07 2001-12-21 Hitachi Ltd Breakage detecting device for windmill vane
JP2005062080A (en) * 2003-08-19 2005-03-10 Toko Electric Corp Lightening stroke current observation device
JP2005302399A (en) * 2004-04-08 2005-10-27 Kanazawa Inst Of Technology Wind power system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000265938A (en) * 1999-03-17 2000-09-26 Hitachi Ltd Thunder protection system of wind power generation
JP2001349775A (en) * 2000-06-07 2001-12-21 Hitachi Ltd Breakage detecting device for windmill vane
JP2005062080A (en) * 2003-08-19 2005-03-10 Toko Electric Corp Lightening stroke current observation device
JP2005302399A (en) * 2004-04-08 2005-10-27 Kanazawa Inst Of Technology Wind power system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58121373A (en) * 1981-12-14 1983-07-19 Sakamoto Fukuo Liquefied petroleum gas safety device against earthquake by shutting-off
JP2008153010A (en) * 2006-12-15 2008-07-03 Toko Electric Corp Blade-thunderstroke monitoring device and thunderstroke monitoring system
JP2009203893A (en) * 2008-02-28 2009-09-10 Toko Electric Corp Blade lightning stroke monitor and wind turbine generator system
US8327710B2 (en) 2010-07-29 2012-12-11 General Electric Company System for estimating a condition of non-conductive hollow structure exposed to a lightning strike
WO2014024303A1 (en) * 2012-08-10 2014-02-13 三菱重工業株式会社 State observation system and state observation method for wind power generation device
JP5614765B2 (en) * 2012-08-10 2014-10-29 三菱重工業株式会社 Wind power generator state monitoring system and state monitoring method
JP2015129493A (en) * 2014-01-09 2015-07-16 株式会社日立製作所 Abnormal degree determination system and method for wind power generator

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