考虑锁相环的双馈风力发电机组无源控制  

Passivity-Based Control for Doubly-Fed Induction Generator Considering the Phase-Locked Loop

作　　者：马燕峰[1] 刘海航 俞人楠 刘佳[1] 刘伟东[3] 赵书强[1] 

机构地区：[1]华北电力大学电气与电子工程学院,保定071003 [2]内蒙古电力(集团)有限责任公司,呼和浩特010000 [3]国网天津市电力公司,天津300072

出　　处：《电工技术学报》2017年第24期224-232,共9页Transactions of China Electrotechnical Society

基　　金：中央高校基本科研业务费专项资金(2016MS86);河北省自然科学基金(E2017502077)资助项目

摘　　要：为了降低大规模变速风力发电机接入电网的运行风险,需要研究风力发电机组的控制策略,增加风电对系统功率振荡的抑制能力。该文通过锁相环实现dq坐标系定向以及输出参考点频率值,考虑锁相环的动态作用建立风力发电机组和电网频率之间的端口受控耗散哈密尔顿(PCHD)模型,根据系统平衡方程求得双馈风力发电机组(DFIG)各个状态变量的期望平衡点,然后采用互联和阻尼分配无源控制(IDA-PBC)方法获得转子电压反馈控制律,从而得到DFIG机侧换流器控制和附加阻尼控制器,以改善系统的低频振荡特性,最后以单机无穷大系统和IEEE4机2区域系统为例验证本文所提方法的有效性。In order to reduce the operational risks of large-scale variable speed wind generation connected to the grid and suppress low frequency oscillation, it is necessary to study the control strategies of wind generation. In this paper, the phase locked loop realizes the dq coordinate system orientation and outputs frequency value of reference point, which can establish the port-controlled Hamiltonian with dissipation （PCHD） model. According to the system equilibrium equation, the expected equilibrium point of each state variable of the doubly-fed wind turbine is obtained. Then the rotor voltage feedback control law is obtained using the interconnection and damping distribution passive control method interconnection and dampling assignament passivity-based control （IDA-PBC）. The doubly-fed induction generator （DFIG） -side converter control and additional damping controller is further obtained to improve the low frequency characteristics of the system. Finally, the infinite system and IEEE 4-machine 2-area system verify the effectiveness of this method.

关 键 词：双馈风力发电机组 互联和阻尼分配无源控制 端口受控耗散哈密尔顿 附加阻尼控制 低频振荡 

分 类 号：TM712[电气工程—电力系统及自动化]