考虑变流器限流与GSC电流的双馈风力发电机暂态全电流计算与分析

doi:10.19595/j.cnki.1000-6753.tces.171257

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (31780 KB)
输出: BibTeX | EndNote (RIS)

摘要

目前在双馈风力发电机（DFIG）短路暂态特性研究中,未充分考虑变流器限流与网侧变流器（GSC）电流的影响,综合考虑以上两种因素,推导了包含定子电流与GSC电流的DFIG暂态全电流精细化解析表达式。在此基础上,通过分析转子电流矢量变化轨迹,给出了转子电流峰值估算公式,量化了变流器励磁状态与撬棒保护投入状态的边界条件;考虑限流环节推导了DFIG最大稳态短路电流的具有普适性的估算公式。结合仿真试验与现场实测数据验证了理论分析与数学模型的精确性。所得结论可为优化低电压穿越控制策略及发电机参数提供理论参考,为与风电场相关联的开关及断路器的容量校核提供依据。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王增平
	李菁
	郑涛
	赵萍
	杨浩

关键词 ：双馈发电机, 变流器控制, 短路电流, 低电压穿越, 测试数据

Abstract：

The current models for transient short-circuit current of doubly-fed induction generator (DFIG) wind turbine do not consider impacts of converter current limiter and grid side converter (GSC) current. Firstly, a total transient short-circuits current analytical expression of DFIG including stator current and GSC current was deduced, considering the aforementioned impacts. Based on the proposed current calculation model, a rotor peak current estimation formula was given through analysis of rotor transient current vector trajectory, to quantify the boundary conditions between two possible states under voltage sags, which are rotor connected to the crowbar protection circuit and rotor excited by the convertor. Finally, the largest DFIG steady-state fault current and its appear condition estimation formulas were obtained, which are of universal significance. The accuracy of theoretical analysis and mathematical model were verified by compared with simulation tests and field measurement data. The conclusions can provide a theoretical reference for optimizing the control strategy and generator parameters for low voltage ride through, and provide the basis for the capacity checking of switches and breakers associated with wind farms.

Key words： Doubly fed induction generator convertor control short circuit current low voltage ride through test data

收稿日期: 2017-09-01 出版日期: 2018-09-14

PACS:

TM315

基金资助:

国家重点研发计划（2016YFB0900604）、国家自然科学基金（51637005）和国家电网公司科技项目（5211TZ16000F）资助

通讯作者: 李菁女,1989年生,博士研究生,研究方向为风电接入电力系统的保护与控制。E-mail: lijing_ncepu@163.com

作者简介: 王增平男,1964年生,教授,博士生导师,研究方向为电力系统保护与控制。E-mail: wangzp1103@sina.com

引用本文:

王增平, 李菁, 郑涛, 赵萍, 杨浩. 考虑变流器限流与GSC电流的双馈风力发电机暂态全电流计算与分析[J]. 电工技术学报, 2018, 33(17): 4123-4135. Wang Zengping, Li Jing, Zheng Tao, Zhao Ping, Yang Hao. Calculation and Analysis of Transient Short Circuit Current of Doubly-Fed Induction Generator Considering Convertor Current Limitation and GSC Current. Transactions of China Electrotechnical Society, 2018, 33(17): 4123-4135.

链接本文:

https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.171257 https://dgjsxb.ces-transaction.com/CN/Y2018/V33/I17/4123

[1] 李欣然, 马亚辉, 曹一家, 等. 一种双馈式风力发电系统的等效模型[J]. 电工技术学报, 2015, 30(8): 210-217.
Li Xinran, Ma Yahui, Cao Yijia, et al.An equivalent model of doubly-fed wind generation system[J]. Transactions of China Electrotechnical Society, 2015, 30(8): 210-217.
[2] 肖繁, 张哲, 尹项根, 等. 含双馈风电机组的电力系统故障计算方法研究[J]. 电工技术学报, 2016, 31(1): 15-22.
Xiao Fan, Zhang Zhe, Yin Xianggen, et al.The fault calculation method of power systems including doubly-fed induction generators[J]. Transactions of China Electrotechnical Society, 2016, 31(1): 15-22.
[3] 李菁, 郑涛, 赵裕童, 等. 双馈风电短路电流特性对距离保护的影响分析[J]. 电力系统保护与控制, 2017, 45(6): 37-47.
Li Jing, Zheng Tao, Zhao Yutong, et al.Impact of doubly-fed wind system short-circuit current characteristics on the transmission line distance protection[J]. Power System Protection and Control, 2017, 45(6): 37-47.
[4] 王增平, 李菁, 郑涛, 等. 不同撬棒保护投入时刻下双馈风电机组短路电流计算分析[J]. 电力系统保护与控制, 2017, 45(5): 109-117.
Wang Zengping, Li Jing, Zheng Tao, et al.Calculation and analysis of three-phase short-circuit current of doubly fed wind turbine considering different crowbar protection insertion time[J]. Power System Protection and Control, 2017, 45(5): 109-117.
[5] 潘文霞, 杨刚, 刘明洋. 考虑Crowbar电阻的双馈电机短路电流计算[J].中国电机工程学报, 2016, 36(13): 630-634.
Pan Wenxia, Yang Gang, Liu Mingyang.Calculation of short-circuit current of DFIG with the considering of crowbar resistance[J]. Proceedings of the CSEE, 2016, 36(13): 630-634.
[6] 黄涛, 陆于平, 王业, 等. 考虑撬棒保护的DFIG等效序阻抗研究[J]. 电工技术学报, 2017, 32(9): 160-168.
Huang Tao, Lu Yuping, Wang Ye, et al.Study on equivalent sequence impedances of DFIG with crowbar protection[J]. Transactions of China Electrotechnical Society, 2017, 32(9): 160-168.
[7] Sulla F, Svensson J, Samuelsson O.Symmetrical and unsymmetrical short-circuit current of squirrel-cage and doubly-fed induction generators[J]. Electric Power Systems Research, 2011, 81(7): 1610-1618.
[8] 王燕萍, 郑涛, 王增平, 等. 不同转差率对双馈风机撬棒投入后的短路电流影响分析[J]. 电力系统保护与控制, 2015, 43(17): 8-14.
Wang Yanping, Zheng Tao, Wang Zengping, et al.Impact analysis of different slips on the short circuit current of DFIG after crowbar operation[J]. Power System Protection and Control, 2015, 43(1): 8-14.
[9] 付元欢, 李银红, 何璇, 等. 电网故障下计及撬棒保护的双馈感应发电机暂态解析修正模型[J]. 中国电机工程学报, 2017, 37(16): 4591-4600.
Fu Yuanhuan, Li Yinhong, He Xuan, et al.Corrected transient analysis model of doubly fed induction generator with crowbar protection under grid fault[J]. Proceedings of the CSEE, 2017, 37(16): 4591-4600.
[10] 张金华, 张保会, 郝治国, 等. 故障后转子侧变流器不间断控制下的双馈风机序网等值电路[J]. 电网技术, 2017, 41(2): 521-528.
Zhang Jinhua, Zhang Baohui, Hao Zhiguo, et al.Equivalent sequence circuit of DFIG wind turbines with uninterrupted control of rotor side converter after faults[J]. Power System Technology, 2017, 41(2): 521-528.
[11] Ouyang Jinxin, Xiong Xiaofu.Research on short-circuit current of doubly fed induction generator under non-deep voltage drop[J]. Electric Power Systems Research, 2014, 107: 158-166.
[12] Kong Xiangping, Zhang Zhe, Yin Xianggen, et al.Study of fault current characteristics of the DFIG considering dynamic response of the RSC[J]. IEEE Transactions on Energy Conversion, 2014, 29(2): 278-287.
[13] 尹俊, 毕天姝, 薛安成, 等. 计及低电压穿越控制的双馈风力发电机组短路电流特性与故障分析方法研究[J].电工技术学报, 2015, 30(23): 118-125.
Yin Jun, Bi Tianshu, Xue Ancheng, et al.Study on short circuit current and fault analysis method of double fed induction generator with low voltage ride-through control strategy[J]. Transactions of China Electrotechnical Society, 2015, 30(23): 118-125.
[14] 陈鹏, 张哲, 尹项根, 等. 计及GSC电流和控制策略的DFIG稳态故障电流计算模型[J]. 电力系统自动化, 2016, 40(16): 8-16.
Chen Peng, Zhang Zhe, Yin Xianggen, et al.Steady fault current calculation model of doubly-fed induction generator considering grid-side converter current and different control strategies[J]. Automation of Electric Power Systems, 2016, 40(16): 8-16.
[15] Hu Jiabing, He Yikang.DFIG wind generation systems operating with limited converter rating considered under unbalanced network conditions-analysis and control design[J]. Renewable Energy, 2011, 36(2): 829-847.
[16] 李辉, 付博, 杨超, 等. 双馈风电机组低电压穿越的无功电流分配及控制策略改进[J]. 中国电机工程学报, 2012, 32(22): 24-31.
Li Hui, Fu Bo, Yang Chao, et al.Reactive current allocation and control strategies improvement of low voltage ride though for doubly fed induction wind turbine generation system[J]. Proceedings of the CSEE, 2012, 32(22): 24-31.
[17] Abad G, Jesus Lopez, Rodriguez M A, 等. 双馈感应电机在风力发电中的建模与控制[M]. 胡家兵, 迟永宁, 汤海雁, 等译. 北京: 机械工业出版社, 2014.
[18] Rahimi M, Parniani M.Grid-fault ride-through analysis and control of wind turbines with doubly fed induction generators[J]. Electric Power Systems Research, 2010, 80(2): 184-195.
[19] Zhou Dao, Blaabjerg F.Bandwidth oriented proportional-integral controller design for back-to-back power converters in DFIG wind turbine system[J]. IET Renewable Power Generation, 2017, 11(7): 941-951.
[20] 张兴, 张崇巍. PWM整流器及其控制[M]. 北京: 机械工业出版社, 2003.
[21] 国家能源局. NB/T 31050—2014风电机组低电压穿越能力测试规程[S]. 北京: 新华出版社, 2015.