CN1934779A - 风力设备 - Google Patents
风力设备 Download PDFInfo
- Publication number
- CN1934779A CN1934779A CNA2005800085013A CN200580008501A CN1934779A CN 1934779 A CN1934779 A CN 1934779A CN A2005800085013 A CNA2005800085013 A CN A2005800085013A CN 200580008501 A CN200580008501 A CN 200580008501A CN 1934779 A CN1934779 A CN 1934779A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/007—Control circuits for doubly fed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
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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
- Y02E10/76—Power conversion electric or electronic aspects
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
本发明涉及一个与三相电网连接的风力设备,包括带有一个转子的发电机,给其分配一个调节装置,其中,调节装置具有第一和第二调节单元,其中电网电压分析器与调节装置和三相电网连接,通过它可确定电网故障,该电网故障定义为电网电压空间矢量与预定的额定区间的偏离,其中,在识别为电网故障的情况下由第二调节单元接管第一调节单元的调节,而第一调节单元用于在未受干扰的三相电网的情况下的调节。
Description
本发明涉及对风力设备、特别是双供给异步电机的调节。
迄今为止,这些风力发电机如在S.Müller、M.Deicke、Rik W.deDoncker:“Doubly fed induction generator system for wind turbines-a viablealternative to adjust speed over a wide range at minimal cost”,IEEE industryapplication magazine,may/june 2002中表示那样的构造和调节。目前,逆变器优选地用一个具有两个自执行的直流电压中间电路整流器的“背靠背”电路实现。给每一逆变器分配一个调节单元。各调节单元确定要实现的所属整流器的开关状态,并将该开关状态通知整流器的控制电路。控制电路通常集成在整流器中。
逆变器的转子绕组侧的整流器利用它的开关状态决定在转子绕组中流动的电流。电网侧的整流器必须把直流电压调节到一个恒定值。电网侧的整流器也可以为多个风车调节直流电压。在这种情况下,在多个风车之间张开了一个直流电网。但是在每一种情况下转子绕组侧的整流器总是分配给恰好一个风车。
所描述的发明特别涉及转子绕组侧整流器的调节。该整流器用作在转子绕组中产生电流系统的调节装置。该电流系统确定在电机的定子绕组和三相电网之间交换的有功功率和无功功率。
与已知的方法相反,本发明的调节优选地包括一个电网电压分析器、一个转换开关和两个单独的调节单元。
根据三相电网的状态(受干扰或未受干扰),所分配的调节单元连接到调节装置(=转子绕组侧整流器)上。三相电网的状态可以在电网电压分析器中例如通过分析在风力设备或者风力公园(Windpark)与上级三相电网的连接点处的电网电压求得:如果电网电压(或者电网电压的空间矢量的数值)与期望值偏离过大,则认为三相电网有故障。然后,可以通过转换开关进行调节单元亦即转子绕组侧整流器之间的相应的转换,现在从另一个调节单元获得它的开关状态信号。
反之,如果在连接点测量的电网电压被重新解释为“未受干扰”,即电网电压从其期望值的偏离重新回到允许范围内,则进行返回到“用于未受干扰的三相电网”的调节单元的转换。
因此调节单元具有下述不同的任务。
*用于未受干扰的叠加的三相电网的调节单元:
风力发电机利用恒定的功率系数(确切说:基波振荡相移系数cos1)运行。这种调节的详细执行从文献中已知。
由在连接点处的电网运行器可能要求的功率系数,可能与固定调节的cos1偏离。一个单独的补偿设备负责匹配。
*用于受干扰的叠加的三相电网的调节单元:
该调节单元试图在风力设备(WKA)的调节范围的框架内把在连接点处的电网电压针对振幅调节到其标称值(=额定值)。通过该运行方式,一方面有助于WKA对于在叠加的三相电网的电网故障的说明,同时实现对电网电压的支持。两者都是从电网运行器的观点出发WKA在电网故障时的一种优选的运行方式。
一种在调节单元中实现的调节的实施方案如下:
把在风力设备和电网或者风力公园和电网之间的连接点处测量的电网电压与额定值比较。在电网电压调节器中评估其差。该调节器可以包含一个静力学装置以防止电网运行设备之间的振荡。电网电压调节器的输出信号是用于由整流器在转子绕组中供给的电流的额定值。
通过一个置于下面的调节单元比较转子绕组电流实际值与该额定值。转子绕组侧整流器的开关状态通过分析该调节偏离确定。
优选的是,在计算时使用转子的角位置和转速的信息。两者都可以通过相应的附属装置确定(例如:测速发电机和转动角编码器)。
Claims (8)
1.一个与三相电网连接的风力设备,包括带有一个转子的发电机,给其分配一个调节装置,其特征在于,所述调节装置具有第一和第二调节单元,其中,电网电压分析器与调节装置和三相电网连接,通过它可确定电网故障,该电网故障定义为电网电压空间矢量与预定的额定区间的偏离,其中,在识别为电网故障的情况下由第二调节单元接管第一调节单元的调节,而第一调节单元用于在未受干扰的三相电网的情况下的调节。
2.根据权利要求1所述的WKA,其中,补偿装置与三相电网连接,通过它执行在未受干扰的三相电网中在通过基波振荡相移系数确定的、希望的无功功率部分上的无功功率调节。
3.根据权利要求2所述的WKA,其中,无功功率调节仅由补偿装置执行,并且对于在正常运行期间未改变的基波振荡相移系数上的调节而调整所述第一调节单元。
4.根据上述权利要求之一所述的WKA,其中,所述发电机构造为双供给异步发电机。
5.根据上述权利要求之一所述的WKA,其中,提供一个转换开关,它与电网电压分析器、第一和第二调节单元连接,并且通过它根据所述电网电压分析器的预先规定可以主动接通第一或者第二调节单元。
6.根据上述权利要求之一所述的WKA,其中,可以给所述电网电压分析器输入关于发电机中转子电流的参数。
7.根据上述权利要求之一所述的WKA,其中,可以给所述电网电压分析器输入关于发电机中转子的角位置和转速的参数。
8.根据权利要求1至4之一所述的WKA,其中,所述第一和第二调节单元通过同一物理单元实现,并且,通过该物理单元利用不同的调节程序的运行,分别要么构造为第一调节单元要么构造为第二调节单元。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004013131A DE102004013131A1 (de) | 2004-03-17 | 2004-03-17 | Windkraftanlage |
DE102004013131.7 | 2004-03-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN1934779A true CN1934779A (zh) | 2007-03-21 |
Family
ID=34961664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNA2005800085013A Pending CN1934779A (zh) | 2004-03-17 | 2005-03-07 | 风力设备 |
Country Status (9)
Country | Link |
---|---|
US (1) | US7531910B2 (zh) |
EP (1) | EP1726088B1 (zh) |
CN (1) | CN1934779A (zh) |
BR (1) | BRPI0508815A (zh) |
CA (1) | CA2560073A1 (zh) |
DE (2) | DE102004013131A1 (zh) |
MX (1) | MXPA06010504A (zh) |
NO (1) | NO20064692L (zh) |
WO (1) | WO2005091490A1 (zh) |
Cited By (2)
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CN101316091B (zh) * | 2007-05-30 | 2011-06-01 | 株式会社日立制作所 | 风力发电系统和电力转换器的控制方法 |
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2004
- 2004-03-17 DE DE102004013131A patent/DE102004013131A1/de not_active Withdrawn
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2005
- 2005-03-07 WO PCT/EP2005/051003 patent/WO2005091490A1/de active IP Right Grant
- 2005-03-07 BR BRPI0508815-1A patent/BRPI0508815A/pt not_active IP Right Cessation
- 2005-03-07 EP EP05716935A patent/EP1726088B1/de not_active Revoked
- 2005-03-07 CA CA002560073A patent/CA2560073A1/en not_active Abandoned
- 2005-03-07 MX MXPA06010504A patent/MXPA06010504A/es not_active Application Discontinuation
- 2005-03-07 US US10/593,042 patent/US7531910B2/en not_active Expired - Fee Related
- 2005-03-07 CN CNA2005800085013A patent/CN1934779A/zh active Pending
- 2005-03-07 DE DE502005003989T patent/DE502005003989D1/de active Active
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2006
- 2006-10-17 NO NO20064692A patent/NO20064692L/no not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101316091B (zh) * | 2007-05-30 | 2011-06-01 | 株式会社日立制作所 | 风力发电系统和电力转换器的控制方法 |
CN101971451A (zh) * | 2008-02-20 | 2011-02-09 | 再生动力系统股份公司 | 具有双馈异步发电机和变频器调节的风能设备 |
CN101971451B (zh) * | 2008-02-20 | 2013-12-25 | 再生动力系统欧洲公司 | 具有双馈异步发电机和变频器调节的风能设备 |
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DE102004013131A1 (de) | 2005-10-06 |
NO20064692L (no) | 2006-10-17 |
US7531910B2 (en) | 2009-05-12 |
CA2560073A1 (en) | 2005-09-29 |
EP1726088A1 (de) | 2006-11-29 |
WO2005091490A1 (de) | 2005-09-29 |
MXPA06010504A (es) | 2006-12-19 |
US20080157533A1 (en) | 2008-07-03 |
EP1726088B1 (de) | 2008-05-07 |
BRPI0508815A (pt) | 2007-08-07 |
DE502005003989D1 (de) | 2008-06-19 |
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