| 电磁耦合调速风力发电机组的运行特性 |
| 陈基和, 林宇龙, 柴建云, 李杰 |
| 清华大学电力系统及发电设备控制和仿真国家重点实验室, 北京 100084 |
| Operating characteristics of an electromagnetic coupler wind turbine generator system |
| CHEN Jihe, LIN Yulong, CHAI Jianyun, LI Jie |
| State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Tsinghua University, Beijing 100084, China |
摘要:
| |||
| 摘要电磁耦合调速风力发电机组与传统风力发电机组不同,通过电磁耦合器借助电磁转矩将风力机齿轮箱输出功率传递给直接并网的同步发电机。采用变频器供电的电磁耦合器具有快速灵活调节其电磁转矩的能力。该文提出了在传递风力机输出转矩的基础上,附加额外的转矩控制,以此来减小系统扰动对同步发电机的影响。搭建了风力发电机组单机无穷大电网的系统模型,探讨转矩调节控制策略与手段。在MATLAB Simulink环境下,对系统干扰甚至故障状态下的动态特性进行分析,仿真结果表明:与只有励磁和风力机输入功率调节机组相比,增加了附加转矩控制的系统暂态稳定性和动态响应过程有较大的改善,充分满足低电压穿越要求,增强了对电网电压的支撑能力。 | |||
| 关键词 ：变速恒频,风力发电机组,电磁耦合器,低电压穿越,附加转矩控制 | |||
| Abstract：The electromagnetic coupler(EMC) wind turbine generator system(WTGS) is distinct from conventional wind turbines in that the synchronous generator is directly connected to the power gird and the output power is passed from the wind turbine gearbox via the EMC. The EMC with an inverter power supply can quickly and flexibly change the torque. This analysis includes additional torque control besides the wind turbine output torque to reduce the influence of system disturbances on the synchronous generator. WTGS and infinite power grid models are used to investigate the torque control and strategy for various system disturbances and fault conditions on the MATLAB Simulink platform. The results show that the additional torque control improves the generator system transient stability and dynamic response compared with only excitation and wind turbine pitch control. The system enables low voltage ride through(LVRT) that enhances the ability to support the grid voltage. | |||
| Key words：variable speed constant frequency(VSCF)wind turbine generator system(WTGS)electromagnetic coupler(EMC)low voltage ride through(LVRT)additional torque control | |||
| 收稿日期: 2013-04-15 出版日期: 2015-12-01 | |||
| |||
| 引用本文: |
| 陈基和, 林宇龙, 柴建云, 李杰. 电磁耦合调速风力发电机组的运行特性[J]. 清华大学学报（自然科学版）, 2015, 55(11): 1253-1257. CHEN Jihe, LIN Yulong, CHAI Jianyun, LI Jie. Operating characteristics of an electromagnetic coupler wind turbine generator system. Journal of Tsinghua University(Science and Technology), 2015, 55(11): 1253-1257. |
| 链接本文: |
| http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2015.21.015或 http://jst.tsinghuajournals.com/CN/Y2015/V55/I11/1253 |
图表:
 |
| 图１ 风力发电系统及其控制示意图 |
 |
| 图２ 转矩控制示意图 |
 |
| 图３ 发电机功角变化曲线 |
 |
| 图４ 三相接地短路故障,发电机转速和转矩响应曲线 |
 |
| 图５ 电网三相接地短路故障,发电机功角和电压响应曲线 |
 |
| 图６ 电网发生８０％的电压跌落,发电机转速与转矩响应曲线 |
 |
| 图７ 电网发生８０％的电压跌落,发电机功角和电压响应曲线 |
参考文献:
| [1] Abdel-Baqi O, Nasiri A. A dynamic LVRT solution for doubly fed induction generators[J]. IEEE Transactions on Power Electronics, 2010, 25(1):193-196. [2] 张兴, 张龙云, 杨淑英, 等. 风力发电低电压穿越技术综述[J]. 电力系统及其自动化学报, 2008, 20(2):1-8.ZHANG Xing, ZHANG Longyun, YANG Shuying, et al. Low voltage ride-through technology in wind turbine generation[J]. Proceedings of the CSU-EPSA, 2008, 20(2):1-8.(in Chinese) [3] 董清, 高曙, 侯子利, 等. 利用功角和转速的非线性最优调速附加控制提高汽轮发电机静态和暂态稳定性的研究[J]. 中国电机工程学报, 2001, 40(2):46-49.DONG Qing, GAO Shu, HOU Zili, et al. Nonlinear optimal governor additional control for improving static stability and transient stability of turbo generator by using feedback of power angle and rotator speed[J]. Proceedings of the CSEE, 2001, 40(2):46-49.(in Chinese) [4] 卢强, 梅生伟, 孙元章. 电力系统非线性控制[M]. 北京:清华大学出版社, 2008.LU Qiang, MEI Shengwei, SUN Yuanzhang. Power System Nonlinear Control[M]. Beijing:Tsinghua press, 2008.(in Chinese) [5] Müller H, Pöller M. Grid compatibility of variable speed wind turbines with directly coupled synchronous generator and hydro-dynamically controlled gearbox[C]//Sixth International Workshop on Large-Scale Integration of Wind Power and Transmission Networks for Offshore Wind Farms. Delft, NL, USA:2006:26-28. [6] 陈基和, 周强明, 柴建云, 等. 基于电磁耦合器调速的新变速恒频风力发电机组[J]. 清华大学学报(自然科学版), 2011, 51(3):361-366.CHEN Jihe, ZHOU Qiangming, CHAI Jianyun, et al. VSCF wind turbine generator based on an electromagnetic coupler[J]. J Tsinghua Univ(Sci and Tech), 2011, 51(3):361-366.(in Chinese) [7] 由蕤, 柴建云, 孙旭东, 等. 电磁耦合调速风力发电机组模拟实验研究[J]. 中国电机工程学报, 2013, 33(3):92-98.YOU Rui, CHAI Jianyun, SUN Xudong, et al. Experimental study of variable speed wind turbines based on electromagnetic couplers[J]. Proceedings of the CSEE, 2013, 33(3):92-98.(in Chinese) [8] 李永东.交流电机数字控制系统[M]. 北京:机械工业出版社, 2012.LI Yongdong. AC Motor Digital Control System[M]. Beijing:Mechanical industry press, 2012.(in Chinse) [9] 竺炜, 谭喜意, 唐颖杰, 等. 用于功角稳定控制的发电机动态模型分析[J]. 中国电机工程学报, 2009, 29(13):54-58.ZHU Wei, TAN Xiyi, TANG Yingjie, et al. Analysis of synchronous machine dynamic model for power-angle stability control[J]. Proceedings of the CSEE, 2009, 29(13):54-58.(in Chinese) [10] Ouassima A, Okou F. Application of a multivariable feedback linearization scheme for rotor angle stability and voltage regulation of power systems[J]. IEEE Transaction on Power Systems, 1999, 14(2):620-628. [11] Miller N, Gasca J. Dynamic modeling of GE 1.5 and 3.6 MW wind turbine-generators for stability simulations[C]//IEEE Power Engineering Society General Meeting. New York, NY, USA:IEEE WTG Model Panel, 2003:1977-1983. [12] 李基成. 现代同步发电机励磁系统设计及应用[M]. 北京:中国电力出版社, 2009.LI Jicheng. Modern Synchronous Generator Excitation System Design and Application[M]. Beijing:Chinese power press, 2009.(in Chinese) |
相关文章:
| ||
