Rotor Current Increment Analysis of Doubly-Fed Induction Generator During Symmetrical Faults Before Crowbar Protection Trigger

doi:10.11930/j.issn.1004-9649.201607056

Abstract

Abstract: It is important to analyze rotor current increment characteristics quantitatively for doubly-fed induction generators(DFIG) initiated by terminal voltage symmetrically dip for wind farm planning, relay protection configuration and cascading trip-off risk reduction. Under conditions of constant rotor speed, excitation voltage in early phase, the electromagnetic transient process of DFIG before crowbar protection triggered is analyzed in detail. By using superposition principle, a maximum rotor current increment calculation method for DFIG initiated by terminal voltage dip is proposed. Furthermore, analytic model to calculate maximum increment of rotor current for DFIG initiated by terminal voltage dip without consideration of stator and rotor winding resistance is derived. Calculating results of different kinds of generators are within 10% error margin compared with iterative calculation results, which show effectiveness of proposed analytical method.

Key words: DFIG, symmetrical short circuit fault, crowbar protection, rotor current increment

CLC Number:

TM343

WANG Yijun, LEI Yang, SHEN Qingkun. Rotor Current Increment Analysis of Doubly-Fed Induction Generator During Symmetrical Faults Before Crowbar Protection Trigger[J]. Electric Power, 2017, 50(9): 178-184.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201607056

https://www.electricpower.com.cn/EN/Y2017/V50/I9/178

References

[1] 王苏,崔杨,冯东东. 不对称故障下双馈感应发电机转子电压分析[J]. 电测与仪表,2014,51（13）：42-46.
WANG Su, CUI Yang, FENG Dongdong. Rotor voltage analysis of the doubly-fed induction generator during asymmetric faults[J]. Electrical Measurement & Instrumentation, 2014, 51(13): 42-46.
[2] 王耀函,刘辉,刘吉臻,等. 考虑撬棒保护和残压的DFIG短路电流实用计算方法及应用[J]. 中国电力,2014,47（4）：134-138.
WANG Yaohan, LIU Hui, LIU Jizhen, et al . Transient current analysis method of DFIG voltage dip based on crowbar protection[J]. Electric Power, 2014, 47(4): 134-138.
[3] 袁至,王维庆. 风电场中双馈风电机组之间的谐波干扰研究[J]. 中国电力,2013,46（11）：89-93.
YUAN Zhi, WANG Weiqing. Researches on internal interferences of harmonics between DFIGs in wind farms[J]. Electric Power, 2013, 46(11): 89-93.
[4] LOPEZ J, GUBIA E, SANCHIS P, et al . Wind turbines based on doubly fed induction generator under asymmetrical voltage[J]. IEEE Transactions on Energy Conversion, 2008, 23(1): 321-330.
[5] 孙银锋,李国庆,王利猛,等. 基于撬棒保护的双馈风电机组动态特性分析[J]. 电测与仪表,2014,51（2）：23-26.
SUN Yinfeng, LI Guoqing, WANG Limeng, et al . Dynamic characteristic analysis of doubly-fed induction generator based on crowbar protection [J]. Electrical Measurement & Instrumentation, 2014, 51(2): 23-26.
[6] 翟佳俊,张步涵,谢光龙,等. 基于撬棒保护的双馈风电机组三相对称短路电流特性[J]. 电力系统自动化,2013,37（3）：18-23.
ZHAI Jiajun, ZHANG Buhan, XIE Guanglong, et al . Three-phase symmetrical short circuit current characteristics analysis of wind turbine driven DFIG with crowbar protection[J]. Automation of Electric Power Systems, 2013, 37(3): 18-23.
[7] 石一辉,鲁宗相,闵勇,等. 双馈感应发电机三相短路电流解析计算模型[J]. 电力系统自动化,2011,35（8）：38-43.
SHI Yihui, LU Zongxiang, MIN Yong, et al . Practical calculation model of three-phase short-circuit current for doubly-fed induction generator[J]. Automation of Electric Power Systems, 2011, 35(8): 38-43.
[8] 熊小伏,欧阳金鑫. 电网短路时双馈感应发电机转子电流的分析与计算[J]. 中国电机工程学报,2012,32（28）：114-121.
XIONG Xiaofu, OUYANG Jinxin. Analysis and calculation of rotor currents for doubly-fed induction generators under short circuits in power grids[J]. Proceedings of the CSEE, 2012, 32(28): 114-121.
[9] MORREN J, HAAN S W H. Short-circuit current of wind turbines with doubly fed induction generator[J]. IEEE Transactions on Energy Conversion, 2007, 22(1): 174-180.
[10] 程孟增,窦真兰,张建文,等. 电压跌落时带有Crowbar电路的双馈感应发电机的瞬态分析[J]. 电网与清洁能源,2012,28（5）：54-60.
CHENG Mengzeng, DOU Zhenlan, ZHANG Jianwen, et al . Transient analysis of DFIG with a crowbar circuit during the voltage dip [J]. Power System and Clean Energy, 2012, 28(5): 54-60.
[11] LOPEZ J, SANCHIS P, ROBOA X. Dynamic behavior of the doubly fed induction generator during three-phase voltage dips [J]. IEEE Transactions on Energy Conversion, 2007, 22(3): 709-717.
[12] 穆钢,王健,严干贵,等. 双馈型风电机群近满载工况下连锁脱网事件分析[J]. 电力系统自动化,2011,35（22）：35-40.
MU Gang, WANG Jian, YAN Gangui, et al . Cascading trip-off of doubly-fed induction generators from grid at near full-load condition in a wind farm[J]. Automation of Electric Power Systems, 2011, 35(22): 35-40.

[1]	ZHAO Jingjing, DU Ming, LIU Shuai, LI Zibo, MA Wenhe. Frequency Modulation and Rotor Speed Recovery Strategy of Doubly-Fed Induction Generator Based on Model Predictive Control [J]. Electric Power, 2023, 56(6): 11-17.
[2]	WU Linlin, CHENG Hao, LIU Jingbo, DU Dongye, GONG Chao, GUO Chunyi. Influence of Static Var Generator on High Frequency Oscillation of Doubly-Fed Wind Farm [J]. Electric Power, 2022, 55(9): 163-173,182.
[3]	SUN Sujuan, HUO Qiantao, SUN Lixin, GUO Liang, WANG Rui, KONG Xiangmei. Mechanism Analysis and Suppression Strategy of Torsional Vibrations of DFIG Shaft System Considering Torque Control of Wind Turbine [J]. Electric Power, 2022, 55(5): 39-46.
[4]	YANG Lei, WANG Zhichao, ZHOU Xin, LI Shengnan, HE Peng, XIANG Chuan, ZHANG Jie, WANG Delin. Frequency Stability Control Strategy for Large-scale Grid Connections with DFIG Units [J]. Electric Power, 2021, 54(5): 186-194.
[5]	YANG Lei, GAN Weigong, LI Shengnan, ZHOU Xin, HE Peng, HE Xin, ZHANG Jie, WANG Delin. Method of DFIG Cooperating with SVG to Suppress Low-Frequency Oscillation in Power Systems [J]. Electric Power, 2020, 53(11): 175-184,201.
[6]	LI Hui, FENG Xiang. Research on Reactive Power Coordinated Control of DFIG Wind Farm and D-STATCOM [J]. journal1, 2015, 48(9): 128-133.
[7]	CHEN Taotao, MA Hongzhong. Simulation on Fault Diagnosis of Brush and Slip Ring System in Doubly-Fed Induction Generators Based on Temperature Field [J]. Electric Power, 2015, 48(12): 173-178.
[8]	LIU Wen-jie, WU Feng, JIN Yu-qing, JU Ping. Clustering Method for DFIG-Based Wind Turbines [J]. Electric Power, 2014, 47(6): 111-116.
[9]	WANG Yao-han, LIU Hui, LIU Ji-zhen, WU Lin-lin. Transient Current Analysis Method of DFIG Voltage Dip Based on Crowbar Protection [J]. Electric Power, 2014, 47(4): 134-138.
[10]	YUAN Yi-tao, KANG Ji-tao, WU Xiao-gang, LI Ya-hui. Bifurcation Analysis on Voltage of Power System with Doubly Fed Induction Generator [J]. Electric Power, 2014, 47(3): 42-47.
[11]	FU Rong, SUN Wan-peng. Parameter Identification of DFIG Based on Trajectory Characteristic Analysis [J]. Electric Power, 2013, 46(7): 100-104.
[12]	LEI Hong-yun, ZHENG Chao, YUE Xing-hua, XU Guang-nian, BAO Jian-fei. Mitigating Thermal Power’s SSR by Additional Damping Controller of DFIG [J]. Electric Power, 2013, 46(4): 63-68.
[13]	LING Yu, CAI Xu, WANG Ning-bo. Combination of Stator Crowbar and DC-Link Discharge Resistor for Fault Ride-Through (FRT) of DFIG [J]. Electric Power, 2013, 46(12): 90-94.
[14]	CHEN Tao-tao, MA Hong-zhong. Theoretical and Simulation Study on Resistance Variations of Brush and Slip Ring of a Double-Fed Induction Generator [J]. Electric Power, 2013, 46(12): 83-89.
[15]	LIN Li， LI Xiao-yu， WANG Shi-qian， SHI Tian， LI Hao-jiong. An active power-frequency control strategy of a DFIG based on subsection control [J]. Electric Power, 2012, 45(2): 49-53.