| 引用本文: | 任佳佳,胡应宏,纪延超.基于α β坐标系下双馈异步风力发电机串补输电系统次同步谐振的比例谐振控制[J].电力自动化设备,2017,37(9): |
| REN Jiajia,HU Yinghong,JI Yanchao.PR control of sub-synchronous resonance in DFIG connected to series compensated power transmission system based on αβ axis[J].Electric Power Automation Equipment,2017,37(9): |
|
| 摘要: |
| 针对双馈异步风力发电机(DFIG)串补输电系统中存在的次同步谐振问题，通过建立DFIG串补输电系统的数学模型，推导出其传递函数；然后采用基于转子静止坐标系下的PR控制来抑制次同步谐振。将系统电流的次同步频率分量转化为转子静止坐标系下的αβ分量，使PR控制的谐振频率点与次同步频率转子静止坐标系下的αβ分量相吻合，用风力发电机实现对次同步谐振的抑制。通过算例仿真分析、硬件在环实验，验证了所提控制策略的有效性和正确性，以及所提方法具有计算简单、便于实现的优点。 |
| 关键词: 比例谐振控制 双馈异步风力发电机 串补 输电系统 次同步谐振 风电 |
| DOI：10.16081/j.issn.1006-6047.2017.09.012 |
| 分类号:TM315 |
| 基金项目: |
|
| PR control of sub-synchronous resonance in DFIG connected to series compensated power transmission system based on αβ axis |
|
REN Jiajia1, HU Yinghong2, JI Yanchao1
|
|
1.School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150001, China;2.North China Electric Power Research Institute Co.,Ltd.,Beijing 100045, China
|
| Abstract: |
| According to the sub-synchronous resonance of DFIG(Doubly-fed Induction Generator) connected to series compensation transmission system, the transfer function is formulated via establishing a mathematical model of DFIG series compensated transmission system. PR control based on static rotor axis is used to suppress the sub-synchronous resonance. By transforming the sub-synchronous frequency component of the system current into αβ component that based on static rotor axis, the frequency of the αβ component can coincide with the resonant frequency of PR control. As such, the control strategy can enhance the suppression of the sub-synchronous resonance from the rotor side converter of the wind turbine. The validity and effectiveness of the proposed control strategy are proved by simulative results. |
| Key words: proportional resonant control doubly-fed induction generator series compensation transmission system sub-synchronous resonance wind power |
