低压穿越工况对大型DFIG的影响分析
|
摘要
文中针对1.5 MW双馈感应式风力发电机(doubly fed induction generator,DFIG)研究低压穿越对电机的影响。在理论分析的基础上,建立了基于PSCAD压降落程度下发电机实现低压穿越过程中电机内定、转子电流以及气隙磁通密度的变化,进而分析了低压穿越对双馈发电机造成的影响。结果表明,双馈风力发电机在实现低压穿越的前提下,定转子产生的冲击电流也会对绕组绝缘产生影响,同时气隙磁密会发生严重畸变。且电压降落程度越大,影响越大,这不利于发电机的安全运行。
To understand the influences of low voltage ride-through on 1.5 MW wind power doubly fed induction generator(DFIG), on the basis of theoretical analysis, a PSCAD based grid connection model and an Ansoft based generator model are established to study the changes of stator and rotor current and air gap flux density during the generator achieving low voltage ride-through(LVRT)under different degrees of voltage drop. Then,the influences of LVRT on DFIG is analyzed. The results show that in the premise of the wind power DFIG realiz-ing low voltage ride-through, the impulse current generated by stator and rotor will affect the winding insulation,and will cause serious distortion of air gap flux density, and these influences become greater with increasing volt-age drop, which will lead to negative effect on safe operation of the generator.
To understand the influences of low voltage ride-through on 1.5 MW wind power doubly fed induction generator(DFIG), on the basis of theoretical analysis, a PSCAD based grid connection model and an Ansoft based generator model are established to study the changes of stator and rotor current and air gap flux density during the generator achieving low voltage ride-through(LVRT)under different degrees of voltage drop. Then,the influences of LVRT on DFIG is analyzed. The results show that in the premise of the wind power DFIG realiz-ing low voltage ride-through, the impulse current generated by stator and rotor will affect the winding insulation,and will cause serious distortion of air gap flux density, and these influences become greater with increasing volt-age drop, which will lead to negative effect on safe operation of the generator.
引文
[1]栗然,王倩,卢云,等.Crowbar阻值对双馈感应发电机低电压穿越特性的影响[J].电力自动化设备,2014,34(4):101-107.LI Ran,WANG Qian,LU Yun,et al.Impact of Crowbar resistance on low voltage ride through of DFIG[J].Electric Power Automation Equipment,2014,34(4):101-107.
[2]张曼,姜惠兰.基于撬棒并联动态电阻的自适应双馈风力发电机低电压穿越[J].电工技术学报,2014,29(2):271-278.ZHANG Man,JIANG Huilan.Adaptive low voltage ridethrough of doubly-fed induction generators based on crowbar with a parallel dynamic resistor[J].Transactions of China Electrotechnical Society,2014,29(2):271-278.
[3]胡家兵.双馈异步风力发电机系统电网故障穿越(不间断)运行研究[D].杭州:浙江大学,2009.HU Jiabing.Study on the fault crossing(uninterrupted)operation of DFIG wind power generation system[J].Hangzhou:Zhejiang University,2009.
[4]彭凌,李永东.电压跌落下双馈风力发电机矢量控制的改进[J].电气传动,2010,40(11):9-12.PENG Ling,LI Yongdong.Improved vector control strategy of DFIG during voltage dips[J].Electric Drive,2010,40(11):9-12.
[5]程孟增.双馈风力发电系统低电压穿越关键技术研究[D].上海:上海交通大学,2012.CHENG Mengzeng.Research on key technologies of low voltage ride through for doubly fed wind power generation system[D].Shanghai:Shanghai Jiao Tong University,2012.
[6]OKEDU K,MUYEEN S,TAKAHASHIR.Wind farms fault ride through using DFIG with new protection scheme[J].IEEE Trans.on Sustainable Energy,2012,3(2):242-254.
[7]IBRAHIMA K,ZHAO C.Modeling of wind energy conversion system using doubly fed induction generator equipped batteries energy storage system[C]//International Conference on Electric Utility Deregulation and Restructuring and Power Technologies.Weihai:[s.n.],2011:1780-1787.
[8]王霞,朱景伟,曹林柏,等.基于Ansoft的双绕组永磁容错电机设计[J].电机与控制应用,2015,42(9):34-38.WANG Xia,ZHU Jingwei,CAO Linbai,et al.Design of dual-winding fault-tolerant permanent magnet motor based on Ansoft[J].Electric Machines&Control Application,2015,42(9):34-38
[9]黄池.双馈风力发电机气隙磁密畸变与多源征兆关系的分析[D].乌鲁木齐:新疆大学,2015.HUANG Chi.Analysis of relationship between distortion of DFIG air gap flux density and multi-source signs[D].Urumqi:Xinjiang University,2015.
[10]门亚萍,张新燕,赵勃遥,等.基于不同运行工况下双馈风力发电机电磁场计算与分析[J].电测与仪表,2016,53(1):50-56.MEN Yaping,ZHANG Xinyan,ZHAO Boyao,et al.Electromagnetic field calculation and analysis for DFIGbased on different operation conditions[J].Eiectrical Measurement&Instrumentation,2016,53(1):50-56.
[11]范坚坚,吴建华.计及齿槽极间隔断Halbach型磁钢PMSM气隙磁场解析分析[J].中国电机工程学报,2010,30(12):98-105.FAN Jianjian,WU Jianhua.Analytical solution and analysis of airgap magnetic field of PMSM with partitionbetween-poles Halbach magnet considering effect of slotting[J].Proceedings of the CSEE,2010,30(12):98-105.
[12]胡家兵,孙丹,贺益康,等.电网电压骤降故障下双馈风力发电机建模与控制[J].电力系统自动化,2006(8):21-26.HU Jiabing,SUN Dan,HE Yikang,et al.Modeling and control of DFIG wind energy generation system under grid voltage dip[J].Automation of Electric Power Systems,2006(8):21-26.
[13]常亚利.双馈型感应发电机低电压穿越时的电磁性能分析及测试方法研究[D].北京:华北电力大学,2012.CHANG Yali.Study on electromagnetic performance analysis and test method of doubly fed induction generator under low voltage ride through[D].Beijing:North China Electric Power University,2012.
[14]张俊,尹曾锋,陈雷,等.基于有限元法的兆瓦级双馈风力发电机电磁分析[J].大电机技术,2013(1):22-24.ZHANG Jun,YIN Zengfeng,CHEN Lei,et al.Electromagnetic analysis of megawatt doubly fed wind power generator based on finite element method[J].Large Electric Machine and Hydraulic Turbine,2013(1):22-24.
[15]段晓田,张新燕,张俊,等.基于有限元法的双馈风力发电机电磁场计算与分析[J].电网技术,2012,36(2):231-236.DUAN Xiaotian,ZHANG Xinyan,ZHANG Jun,et al.Calculation and analysis of electromagnetic field of doubly fed wind power generator based on finite element method[J].Power System Technology,2012,36(2):231-236.
[16]孙梦云.基于场路耦合时步有限元法的感应电机瞬态分析[D].宜昌:三峡大学,2013.Sun Mengyun.Transient analysis of induction motor based on field circuit coupled time stepping finite element method[D].Yichang:China Three Gorges University,2013.
[17]王成立.基于Ansoft的发电机定子端部短路故障分析研究[D].杭州:浙江大学,2011.WANG Chengli.Analysis of generator stator end short circuit fault based on Ansoft[D].Hangzhou:Zhejiang University,2011.
[18]魏曙光,马晓军,闫之峰,等.基于Ansoft的定子双绕组感应发电机设计分析[J].微特电机,2013,41(1):1-3.WEI Shuguang,MA Xiaojun,YAN Zhifeng,et al.Design and analysis of dual stator-winding induction generator based on Ansoft[J].Small&Special Electrical Machines,2013,41(1):1-3.
[19]刘金鹏,庄圣贤,周娟,等.基于Ansoft的爪极发电机漏磁分析与优化设计[J].电机与控制应用,2013,40(6):11-13.LIU Jinpeng,ZHUANG Shengxian,ZHOU Juan,et al.Analysis and optimization design on magnetic flux leakage of claw-pole alternators based on software Ansoft[J].Electric Machines&Control Application,2013,40(6):11-13.(92)
[20]丁树业,孙兆琼,徐殿国,等.3 MW双馈风力发电机传热特性数值研究[J].中国电机工程学报,2012,32(3):137-143.DING Shuye,SUN Zhaoqiong,XU Dianguo,et al.Numerical investigation of heat transfer for 3 MW doublyfed wind generators[J].Proceedings of the CSEE,2012,32(3):137-143.
[2]张曼,姜惠兰.基于撬棒并联动态电阻的自适应双馈风力发电机低电压穿越[J].电工技术学报,2014,29(2):271-278.ZHANG Man,JIANG Huilan.Adaptive low voltage ridethrough of doubly-fed induction generators based on crowbar with a parallel dynamic resistor[J].Transactions of China Electrotechnical Society,2014,29(2):271-278.
[3]胡家兵.双馈异步风力发电机系统电网故障穿越(不间断)运行研究[D].杭州:浙江大学,2009.HU Jiabing.Study on the fault crossing(uninterrupted)operation of DFIG wind power generation system[J].Hangzhou:Zhejiang University,2009.
[4]彭凌,李永东.电压跌落下双馈风力发电机矢量控制的改进[J].电气传动,2010,40(11):9-12.PENG Ling,LI Yongdong.Improved vector control strategy of DFIG during voltage dips[J].Electric Drive,2010,40(11):9-12.
[5]程孟增.双馈风力发电系统低电压穿越关键技术研究[D].上海:上海交通大学,2012.CHENG Mengzeng.Research on key technologies of low voltage ride through for doubly fed wind power generation system[D].Shanghai:Shanghai Jiao Tong University,2012.
[6]OKEDU K,MUYEEN S,TAKAHASHIR.Wind farms fault ride through using DFIG with new protection scheme[J].IEEE Trans.on Sustainable Energy,2012,3(2):242-254.
[7]IBRAHIMA K,ZHAO C.Modeling of wind energy conversion system using doubly fed induction generator equipped batteries energy storage system[C]//International Conference on Electric Utility Deregulation and Restructuring and Power Technologies.Weihai:[s.n.],2011:1780-1787.
[8]王霞,朱景伟,曹林柏,等.基于Ansoft的双绕组永磁容错电机设计[J].电机与控制应用,2015,42(9):34-38.WANG Xia,ZHU Jingwei,CAO Linbai,et al.Design of dual-winding fault-tolerant permanent magnet motor based on Ansoft[J].Electric Machines&Control Application,2015,42(9):34-38
[9]黄池.双馈风力发电机气隙磁密畸变与多源征兆关系的分析[D].乌鲁木齐:新疆大学,2015.HUANG Chi.Analysis of relationship between distortion of DFIG air gap flux density and multi-source signs[D].Urumqi:Xinjiang University,2015.
[10]门亚萍,张新燕,赵勃遥,等.基于不同运行工况下双馈风力发电机电磁场计算与分析[J].电测与仪表,2016,53(1):50-56.MEN Yaping,ZHANG Xinyan,ZHAO Boyao,et al.Electromagnetic field calculation and analysis for DFIGbased on different operation conditions[J].Eiectrical Measurement&Instrumentation,2016,53(1):50-56.
[11]范坚坚,吴建华.计及齿槽极间隔断Halbach型磁钢PMSM气隙磁场解析分析[J].中国电机工程学报,2010,30(12):98-105.FAN Jianjian,WU Jianhua.Analytical solution and analysis of airgap magnetic field of PMSM with partitionbetween-poles Halbach magnet considering effect of slotting[J].Proceedings of the CSEE,2010,30(12):98-105.
[12]胡家兵,孙丹,贺益康,等.电网电压骤降故障下双馈风力发电机建模与控制[J].电力系统自动化,2006(8):21-26.HU Jiabing,SUN Dan,HE Yikang,et al.Modeling and control of DFIG wind energy generation system under grid voltage dip[J].Automation of Electric Power Systems,2006(8):21-26.
[13]常亚利.双馈型感应发电机低电压穿越时的电磁性能分析及测试方法研究[D].北京:华北电力大学,2012.CHANG Yali.Study on electromagnetic performance analysis and test method of doubly fed induction generator under low voltage ride through[D].Beijing:North China Electric Power University,2012.
[14]张俊,尹曾锋,陈雷,等.基于有限元法的兆瓦级双馈风力发电机电磁分析[J].大电机技术,2013(1):22-24.ZHANG Jun,YIN Zengfeng,CHEN Lei,et al.Electromagnetic analysis of megawatt doubly fed wind power generator based on finite element method[J].Large Electric Machine and Hydraulic Turbine,2013(1):22-24.
[15]段晓田,张新燕,张俊,等.基于有限元法的双馈风力发电机电磁场计算与分析[J].电网技术,2012,36(2):231-236.DUAN Xiaotian,ZHANG Xinyan,ZHANG Jun,et al.Calculation and analysis of electromagnetic field of doubly fed wind power generator based on finite element method[J].Power System Technology,2012,36(2):231-236.
[16]孙梦云.基于场路耦合时步有限元法的感应电机瞬态分析[D].宜昌:三峡大学,2013.Sun Mengyun.Transient analysis of induction motor based on field circuit coupled time stepping finite element method[D].Yichang:China Three Gorges University,2013.
[17]王成立.基于Ansoft的发电机定子端部短路故障分析研究[D].杭州:浙江大学,2011.WANG Chengli.Analysis of generator stator end short circuit fault based on Ansoft[D].Hangzhou:Zhejiang University,2011.
[18]魏曙光,马晓军,闫之峰,等.基于Ansoft的定子双绕组感应发电机设计分析[J].微特电机,2013,41(1):1-3.WEI Shuguang,MA Xiaojun,YAN Zhifeng,et al.Design and analysis of dual stator-winding induction generator based on Ansoft[J].Small&Special Electrical Machines,2013,41(1):1-3.
[19]刘金鹏,庄圣贤,周娟,等.基于Ansoft的爪极发电机漏磁分析与优化设计[J].电机与控制应用,2013,40(6):11-13.LIU Jinpeng,ZHUANG Shengxian,ZHOU Juan,et al.Analysis and optimization design on magnetic flux leakage of claw-pole alternators based on software Ansoft[J].Electric Machines&Control Application,2013,40(6):11-13.(92)
[20]丁树业,孙兆琼,徐殿国,等.3 MW双馈风力发电机传热特性数值研究[J].中国电机工程学报,2012,32(3):137-143.DING Shuye,SUN Zhaoqiong,XU Dianguo,et al.Numerical investigation of heat transfer for 3 MW doublyfed wind generators[J].Proceedings of the CSEE,2012,32(3):137-143.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |