同步发电机场路耦合模型的参数化建立方法
|
摘要
针对用于分析同步发电机内部短路故障场路耦合模型前处理工作量过大的问题,提出了一种场路耦合模型的参数化建立方法。该方法适用于任意尺寸、磁极形状和绕组形式的同步发电机场路耦合模型的快速建立。以一台1 400 MW汽轮发电机为研究对象,建立了该电机的场路耦合模型,并对其发生定子绕组内部短路后的暂态过程进行了详细地研究。结果表明:短路后位于故障区域的气隙磁场畸变严重,并出现了较强的偶数次谐波;故障电流幅值很大,对电机的安全运行带来严重威胁;阻尼条电流周期性达到峰值,其周期为转子旋转一周的时间。
In order to solve the problem that the pre-processing of building the field-circuit coupled model for analyzing the internal faults of synchronous generators is time-consuming,a parametric modeling method for the field-circuit coupled model is given in this paper. This method applies to establish the field-circuit coupled model of synchronous machines with different dimensions,salient and non-salient and different winding types. Moreover,a1400 MW turbo-generator is taken as an example,and the field-circuit coupled model is built using the parametric modeling method,then the transient process of this generator during the internal faults is simulated. It shows that the air gap magnetic field located in the internal fault area is serious distortion,and a strong even-order harmonics appear. The magnitude of the fault currents are very large,which may result in terrible damages to the machine.the damper bar current peaked periodically,and the period equals the time of one rotation of the rotor.
In order to solve the problem that the pre-processing of building the field-circuit coupled model for analyzing the internal faults of synchronous generators is time-consuming,a parametric modeling method for the field-circuit coupled model is given in this paper. This method applies to establish the field-circuit coupled model of synchronous machines with different dimensions,salient and non-salient and different winding types. Moreover,a1400 MW turbo-generator is taken as an example,and the field-circuit coupled model is built using the parametric modeling method,then the transient process of this generator during the internal faults is simulated. It shows that the air gap magnetic field located in the internal fault area is serious distortion,and a strong even-order harmonics appear. The magnitude of the fault currents are very large,which may result in terrible damages to the machine.the damper bar current peaked periodically,and the period equals the time of one rotation of the rotor.
引文
[1] WANG Xiangheng,SUN Yuguang,OUYANG Bei,et al. Transient Behaviour of Salient-pole Synchronous Machine with Internal Stator Winding Faults[J]. Proc. Inst. Electr. Eng.—Electr.Power Appl.,2002,149(2):143-151.
[2]戈宝军,肖士勇,吕艳玲,等.水轮发电机定子绕组内部故障暂态电流研究[J].电机与控制学报,2014,18(3):40-45.
[3]邰能灵,尹项根.凸极发电机定子绕组故障瞬变过程仿真及其规律探讨[J].中国电机工程学报,2001,21(7):61-65.
[4]王维俭,王祥珩,王赞基.大型发电机变压器内部故障分析与继电保护[M].北京:中国电力出版社,2014:1-91.
[5]孙宇光,王维俭,桂林,等.龙滩发电机主保护配置方案[J].电力系统自动化,2005,29(1):83-88.
[6]董传友.大型核电汽轮发电机短路故障瞬态负序电流分析[J].哈尔滨理工大学学报,2015,20(3):97-100.
[7] REICHMEIDER P. P.,GROSS C. A.,QUERREY D.,et al.Internal Faults in Synchronous Machines Part I:The machine model[J]. IEEE Transactions on Energy Conversion,2000,15(4):376-379.
[8] TU Xiaoping,DESSAINT L A,KAHEL M E,et al. A New Model of Synchronous Machine Internal Faults Based on Winding Distribution[J]. IEEE Transactions on Industrial Electronics,2006,53(6):1818-1828.
[9] TU Xiaoping,DESSAINT L A,FALLATI N,et al. Modeling and Real-time Simulation of Internal Faults in Synchronous Generators with Parallel-connected Windings[J]. IEEE Transactions on Industrial Electronics,2007,54(3):1400-1409.
[10]高景德,王祥珩,李发海.交流电机及其系统分析[M].北京:清华大学出版社,1993.
[11]王艳,胡敏强.大型凸极同步发电机定子绕组内部故障瞬态仿真[J].电力系统自动化,2002,26(16):34-38.
[12]孙宇光,王祥衍,欧阳蓓,等.凸极同步发电机定子绕组内部故障的瞬态计算及有关保护方案的分析[J].电工技术学报,2001,16(l):3-8.
[13]魏书荣,马宏忠.基于多回路理论的同步电机定子绕组内部故障仿真的谐波分析[J].电力自动化设备,2008,28(4):32-36.
[14]孙宇光,王祥衍,桂林,等.场路耦合法计算同步发电机内部故障的暂态过程[J].中国电机工程学报,2004,24(l):136-141.
[15]夏长亮,方红伟,金雪峰,等.同步发电机定子组内部故障数值分析[J].中国电机工程学报,2006,26(l0):124-129.
[16]赵洪森,戈宝军,陶大军,等.定子绕组匝间短路对发电机电磁转矩特性的影响[J].电工技术学报,2016,31(5):192-198.
[17] DALLAS S E,SAFACAS A N,KAPPATOU J C,Interturn Stator Faults Analysis of a 200-MVA Hydro Generator During Transient Operation Using FEM[J]. IEEE Transactions on Energy Conversion,2011,26(4):1151-1160.
[18] VASSENT E,MEUNITER G,FOGGIA A,et al. Simulation of Induction Machine Operation Using a Step by Step Finite-element Method Coupled with Circuit and Mechanical Equations[J]. IEEE Transactions on Magnet,1991,27(6):5232-5234.
[2]戈宝军,肖士勇,吕艳玲,等.水轮发电机定子绕组内部故障暂态电流研究[J].电机与控制学报,2014,18(3):40-45.
[3]邰能灵,尹项根.凸极发电机定子绕组故障瞬变过程仿真及其规律探讨[J].中国电机工程学报,2001,21(7):61-65.
[4]王维俭,王祥珩,王赞基.大型发电机变压器内部故障分析与继电保护[M].北京:中国电力出版社,2014:1-91.
[5]孙宇光,王维俭,桂林,等.龙滩发电机主保护配置方案[J].电力系统自动化,2005,29(1):83-88.
[6]董传友.大型核电汽轮发电机短路故障瞬态负序电流分析[J].哈尔滨理工大学学报,2015,20(3):97-100.
[7] REICHMEIDER P. P.,GROSS C. A.,QUERREY D.,et al.Internal Faults in Synchronous Machines Part I:The machine model[J]. IEEE Transactions on Energy Conversion,2000,15(4):376-379.
[8] TU Xiaoping,DESSAINT L A,KAHEL M E,et al. A New Model of Synchronous Machine Internal Faults Based on Winding Distribution[J]. IEEE Transactions on Industrial Electronics,2006,53(6):1818-1828.
[9] TU Xiaoping,DESSAINT L A,FALLATI N,et al. Modeling and Real-time Simulation of Internal Faults in Synchronous Generators with Parallel-connected Windings[J]. IEEE Transactions on Industrial Electronics,2007,54(3):1400-1409.
[10]高景德,王祥珩,李发海.交流电机及其系统分析[M].北京:清华大学出版社,1993.
[11]王艳,胡敏强.大型凸极同步发电机定子绕组内部故障瞬态仿真[J].电力系统自动化,2002,26(16):34-38.
[12]孙宇光,王祥衍,欧阳蓓,等.凸极同步发电机定子绕组内部故障的瞬态计算及有关保护方案的分析[J].电工技术学报,2001,16(l):3-8.
[13]魏书荣,马宏忠.基于多回路理论的同步电机定子绕组内部故障仿真的谐波分析[J].电力自动化设备,2008,28(4):32-36.
[14]孙宇光,王祥衍,桂林,等.场路耦合法计算同步发电机内部故障的暂态过程[J].中国电机工程学报,2004,24(l):136-141.
[15]夏长亮,方红伟,金雪峰,等.同步发电机定子组内部故障数值分析[J].中国电机工程学报,2006,26(l0):124-129.
[16]赵洪森,戈宝军,陶大军,等.定子绕组匝间短路对发电机电磁转矩特性的影响[J].电工技术学报,2016,31(5):192-198.
[17] DALLAS S E,SAFACAS A N,KAPPATOU J C,Interturn Stator Faults Analysis of a 200-MVA Hydro Generator During Transient Operation Using FEM[J]. IEEE Transactions on Energy Conversion,2011,26(4):1151-1160.
[18] VASSENT E,MEUNITER G,FOGGIA A,et al. Simulation of Induction Machine Operation Using a Step by Step Finite-element Method Coupled with Circuit and Mechanical Equations[J]. IEEE Transactions on Magnet,1991,27(6):5232-5234.