欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    EN 61400-21-2008 en Wind turbines - Part 21 Measurement and assessment of power quality characteristics of grid connected wind turbines《风力涡轮机 第21部分 网格连接风轮机的动力质量特性的测量和评定》.pdf

    • 资源ID:720192       资源大小:509.59KB        全文页数:62页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    EN 61400-21-2008 en Wind turbines - Part 21 Measurement and assessment of power quality characteristics of grid connected wind turbines《风力涡轮机 第21部分 网格连接风轮机的动力质量特性的测量和评定》.pdf

    1、Wind turbines Part 21: Measurement and assessment of power qualitycharacteristics of grid connected wind turbinesBS EN 61400-21:2008raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsNational forewordThis British Standard is the UK i

    2、mplementation of EN 61400-21:2008. It isidentical to IEC 61400-21:2008. It supersedes BS EN 61400-21:2002 which iswithdrawn.The UK participation in its preparation was entrusted to Technical CommitteePEL/88, Wind turbines.A list of organizations represented on this committee can be obtained onreques

    3、t to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity fromlegal obligations. BSI 200ISBN 978 0 580 56750 6ICS 27.180Amendments issued since

    4、 publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 61400-21:20089This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 January 2009. EUROPEAN STANDARD EN 61400-21 NORME EUROPENNE EUROPISCHE NORM November 2008 CENELEC European Committee

    5、for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC membe

    6、rs. Ref. No. EN 61400-21:2008 E ICS 27.180 Supersedes EN 61400-21:2002English version Wind turbines - Part 21: Measurement and assessment of power quality characteristics of grid connected wind turbines (IEC 61400-21:2008) Eoliennes - Partie 21: Mesurage et valuation des caractristiques de qualit de

    7、 puissance des oliennes connectes au rseau (CEI 61400-21:2008) Windenergieanlagen - Teil 21: Messung und Bewertung der Netzvertrglichkeit von netzgekoppelten Windenergieanlagen (IEC 61400-21:2008) This European Standard was approved by CENELEC on 2008-10-01. CENELEC members are bound to comply with

    8、the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat

    9、 or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the off

    10、icial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portuga

    11、l, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61400-21:2008EN 61400-21:2008 2 Foreword The text of document 88/317/FDIS, future edition 2 of IEC 61400-21, prepared by IEC TC 88, Wind turbines, was submitted to the IEC-CENELEC parallel vote and was approved

    12、by CENELEC as EN 61400-21 on 2008-10-01. This European Standard supersedes EN 61400-21:2002. EN 61400-21:2008 includes the following new items with respect to EN 61400-21:2002: interharmonics and current distortions ( 35 kV. 2 Normative references The following referenced documents are indispensable

    13、 for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60044-1, Instrument transformers Part 1: Current transformers IEC 60044-2, Instrument transformer

    14、s Part 2: Inductive voltage transformers BS EN 61400-21:2008 8 61400-21 IEC:2008 IEC 60050-161, International Electrotechnical Vocabulary Part 161: Electromagnetic compatibility IEC 60050-415, International Electrotechnical Vocabulary Part 415: Wind turbine generator systems IEC 61000-4-7:2002, Elec

    15、tromagnetic compatibility (EMC) Part 4-7: Testing and measurement techniques General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto IEC 61000-4-15, Electromagnetic compatibility (EMC) Part 4: Testing and measurement te

    16、chniques Section 15: Flickermeter Functional and design specifications IEC 61400-12-1, Wind turbines Part 12-1: Power performance measurements of electricity producing wind turbines IEC 61800-3:2004, Adjustable speed electrical power drive systems Part 3: EMC requirements and specific test methods I

    17、EC 62008, Performance characteristics and calibration methods for digital data acquisition systems and relevant software 3 Terms and definitions For purposes of this document, the following terms and definitions apply. 3.1 continuous operation (for wind turbines) normal operation of the wind turbine

    18、 excluding start-up and shutdown operations 3.2 cut-in wind speed (for wind turbines) lowest wind speed at hub height at which the wind turbine starts to produce power IEV 415-03-05 3.3 flicker coefficient for continuous operation (for wind turbines) normalized measure of the flicker emission during

    19、 continuous operation of the wind turbine: ()nfick,ficst,kSSPc = where Pst,ficis the flicker emission from the wind turbine on the fictitious grid; Snis the rated apparent power of the wind turbine; Sk,ficis the short-circuit apparent power of the fictitious grid NOTE The flicker coefficient for con

    20、tinuous operation is the same for a short-term (10 min) and long-term period (2 h). 3.4 flicker step factor (for wind turbines) a normalized measure of the flicker emission due to a single switching operation of the wind turbine: BS EN 61400-21:200861400-21 IEC:2008 9 31,0pficst,nfick,kf1301)( TPSSk

    21、 = where Tpis the measurement period, long enough to ensure that the transient of the switching operation has abated, though limited to exclude possible power fluctuations due to turbulence; Pst,ficis the flicker emission from the wind turbine on the fictitious grid; Snis the rated apparent power of

    22、 the wind turbine; Sk,ficis the short-circuit apparent power of the fictitious grid NOTE The flicker coefficient Pst,ficis here evaluated over the time period Tp. 3.5 maximum measured power (for wind turbines) power (with a specified averaging time) which is observed during continuous operation of t

    23、he wind turbine 3.6 network impedance phase angle phase angle of network short-circuit impedance: )(arctankkkRX= where Xkis the network short-circuit reactance; Rkis the network short-circuit resistance 3.7 normal operation (for wind turbines) fault free operation complying with the description in t

    24、he wind turbine manual 3.8 operational mode (for wind turbines) operation according to control setting, for example voltage control mode, frequency control mode, reactive power control mode, active power control mode, etc. 3.9 output power (for wind turbines) electric active power delivered by the w

    25、ind turbine at its terminals IEV 415-04-02, modified 3.10 point of common coupling PCC point of a power supply network, electrically nearest to a particular load, at which other loads are, or may be, connected NOTE 1 These loads can be either devices, equipment or systems, or distinct customers inst

    26、allations. NOTE 2 In some applications, the term “point of common coupling” is restricted to public networks. IEV 161-07-15, modified 3.11 power collection system (for wind turbines) electrical system that collects the power from a wind turbine and feeds it into an electrical supply network BS EN 61

    27、400-21:2008 10 61400-21 IEC:2008 IEV 415-04-06, modified 3.12 rated apparent power (for wind turbines) apparent power from the wind turbine while operating at rated current and nominal voltage and frequency: nnIUS 3n= where Unis the nominal voltage; Inis the rated current 3.13 rated current (for win

    28、d turbines) maximum continuous electric output current which a wind turbine is designed to achieve under normal operating conditions 3.14 rated power (for wind turbines) maximum continuous electric output power which a wind turbine is designed to achieve under normal operating conditions IEV 415-04-

    29、03, modified 3.15 rated wind speed (for wind turbines) wind speed at which a wind turbines rated power is achieved IEV 415-03-04, modified 3.16 standstill (for wind turbines) condition of a wind turbine that is stopped IEV 415-01-15, modified 3.17 start-up (for wind turbines) transitional state of a

    30、 wind turbine between standstill and power production 3.18 switching operation (for wind turbines) start-up or switching between generators 3.19 turbulence intensity ratio of the wind speed standard deviation to the mean wind speed, determined from the same set of measured data samples of wind speed

    31、, and taken over a specified period of time IEV 415-03-25 3.20 voltage change factor (for wind turbines) a normalized measure of the voltage change due to a switching operation of the wind turbine: nfick,nminfic,maxfic,ku3)(SSUUUk = BS EN 61400-21:200861400-21 IEC:2008 11 where Ufic,minand Ufic,maxa

    32、re the minimum and maximum one period RMS value of the phase-to-neutral voltage on the fictitious grid during the switching operation; Unis the nominal phase-to-phase voltage; Snis the rated apparent power of the wind turbine; Sk,ficis the short-circuit apparent power of the fictitious grid. NOTE Th

    33、e voltage change factor kuis similar to kibeing the ratio between the maximum inrush current and the rated current, though kuis a function of the network impedance phase angle. The highest value of kuwill be numerically close to ki. 3.21 wind turbine WT system which converts kinetic wind energy into

    34、 electric energy 3.22 wind turbine terminals point being a part of the WT and identified by the WT supplier at which the WT may be connected to the power collection system 4 Symbols and units In this part of IEC 61400, the following symbols and units are used. ndynUUmaximum permitted voltage change

    35、(%)knetwork impedance phase angle ()m(t) electrical angle of the fundamental of the measured voltage () exponent associated with summation of harmonics c(k) flicker coefficient for continuous operation d relative voltage change (%) EPltilong-term flicker emission limit EPstishort-term flicker emissi

    36、on limit fgnominal grid frequency (50 Hz or 60 Hz) fm,ifrequency of occurrence of flicker coefficient values within the ith wind speed bin foverover-frequency protection level funderunder-frequency protection level fy,ifrequency of occurrence of wind speeds within the ith wind speed bin h harmonic o

    37、rder BS EN 61400-21:2008 12 61400-21 IEC:2008 Ih,ihth order harmonic current distortion of ith wind turbine (A) im(t) measured instantaneous current (A) Inrated current (A) kf(k) flicker step factor kiratio of maximum inrush current and rated current ku(k) voltage change factor Lficinductance of fic

    38、titious grid (H) N10mmaximum number of one type of switching operations within a 10 min period N120mmaximum number of one type of switching operations within a 120 min period Nbintotal number of wind speed bins between vcut-inand 15 m/s niratio of the transformer at the ith wind turbine Nmtotal numb

    39、er of measured flicker coefficient values Nm,inumber of measured flicker coefficient values within the ith wind speed bin Nm,i,c 6 m/s. BS EN 61400-21:2008 26 61400-21 IEC:2008 7.3.4 Switching operations Based on manufacturers information, the maximum number of switching operations, N10mand N120msha

    40、ll be determined for each type of switching operation specified in 6.3.3. In the event that the wind turbine manufacturer cannot provide these numbers, or the manufacturer cannot provide sufficient specification of the wind turbine control system to support the provided numbers, the following shall

    41、be assumed: a) Wind turbine start-up at cut-in wind speed: N10m= 10 and N120m= 120. b) Wind turbine start-up at rated wind speed or higher wind speed: N10m= 1 and N120m= 12. c) The worst case of switching between generators: N10m= 10 and N120m= 120. Measurements and subsequent simulations and calcul

    42、ations shall be prepared to determine the voltage change factor ku(k), and the flicker step factor kf(k) for each type of switching operation specified in 6.3.3. This subclause gives the detailed procedure, whereas an informative outline is provided in Clause B.2. Whereas 6.3.3 a) and 6.3.3 b) each

    43、specify a switching at a specific wind speed, it is the task of the assessor to identify the conditions of 6.3.3 c). This may be done by assessment of the wind turbine design, or if this does not give sufficient evidence, measurements shall be taken to identify the conditions for 6.3.3 c). See also

    44、Note 1 in 6.3.3. To determine the voltage change factor ku(k), and the flicker step factor kf(k), the following measurements shall be prepared: i) The three instantaneous line currents and the three instantaneous phase-to-neutral voltages shall be measured at the wind turbine terminals. ii) The meas

    45、urements shall be taken for a period, Tp, long enough to ensure that the transient of the switching operation has abated, though limited to exclude possible power fluctuations due to turbulence. iii) In order to ensure that the results of the measurements are representative of the normal average con

    46、ditions, each case should be performed five times. iv) The wind speed shall be measured according to 7.1.3. The 1 min average wind speed during the switching operation shall be within a range of 2 m/s of the required wind speed. The measurements shall be taken with a measurement set-up as specified

    47、in Figure 3, and by applying voltage and current transformers and an anemometer with specifications according to Table 2. The cut-off frequency of the voltage and current measurements shall be at least 1 500 Hz (see Note 1). As a guidance, for wind turbines applying soft-starters or other effective

    48、limitation of the inrush currents, the current transformers should be rated two to four times the rated current. For wind turbines without any inrush current limitation, as a guidance, the current transformers should be rated 10 to 20 times the rated current of the wind turbine. The measurements sha

    49、ll be treated to determine the voltage change factor and the flicker step factor. This shall be done applying the following procedure. 1) The measured time-series shall be combined to give voltage time-series of ufic(t). 2) The simulated voltage time-series of ufic(t) shall be input to the flicker algorithm in compliance with IEC 61000-4-15 to give one flicker emission value Pst,ficon the fictitious grid for each time-series of ufic(t). This will


    注意事项

    本文(EN 61400-21-2008 en Wind turbines - Part 21 Measurement and assessment of power quality characteristics of grid connected wind turbines《风力涡轮机 第21部分 网格连接风轮机的动力质量特性的测量和评定》.pdf)为本站会员(孙刚)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开