| 引用本文: | 李少林,秦世耀,王瑞明,王文卓.双馈风电机组孤岛机理与防孤岛保护试验[J].电力自动化设备,2016,36(7): |
| LI Shaolin,QIN Shiyao,WANG Ruiming,WANG Wenzhuo.Research of islanding mechanism and anti-islanding protection for DFIG[J].Electric Power Automation Equipment,2016,36(7): |
|
| 摘要: |
| 通过风电机组孤岛运行特性分析，揭示了风电机组孤岛运行功率不匹配度与公共连接点（PCC）处电压与频率的关系，进行了功率扰动灵敏度定量分析；提出了无功功率-频率反馈和有功功率-电压反馈控制相结合的综合功率扰动孤岛检测法，并进行了双馈风电机组综合功率扰动孤岛检测控制环设计。所提方法具有无检测盲区、检测速度快、可靠性高等特点。通过MATLAB／Simulink仿真实现了双馈风电机组综合功率扰动孤岛检测全过程仿真；并利用RLC负荷模拟设备在2.5 MW大容量双馈风电机组上进行了防孤岛保护现场试验，结果证明了利用所提方法可有效检测风电机组孤岛运行。 |
| 关键词: 双馈风机 风电 功率匹配 灵敏度分析 综合功率扰动 防孤岛保护 |
| DOI： |
| 分类号: |
| 基金项目:国家科技支撑计划项目（2015BAA07B01）；国家电网公司科技项目 |
|
| Research of islanding mechanism and anti-islanding protection for DFIG |
|
LI Shaolin, QIN Shiyao, WANG Ruiming, WANG Wenzhuo
|
|
China Electric Power Research Institute，Beijing 100192，China
|
| Abstract: |
| The operating characteristics of islanded wind turbine are analyzed，the relationship between its power mismatch degree and the voltage／frequency of PCC（Point of Common Coupling） is revealed，and the power disturbance sensitivity is quantificationally analyzed. A composite island detection method combining the reactive power-frequency feedback control and the active power-voltage feedback control is proposed and a control loop for the proposed detection method is designed for DFIG（Doubly Fed Induction Generator）， which is fast，reliable and without dead-zone. The whole detection process is simulated with MATLAB／Simulink and the field test of anti-islanding protection is carried out for a 2.5 MW DFIG with RLC load simulation equipment. The simulative and experimental results show the islanding operation of wind turbine can be effectively detected by the proposed method. |
| Key words: doubly fed wind turbine generator wind power power matching sensitivity analysis combined power disturbance anti-islanding protection |
