Abstract：In order to the wind power generation system be normal operation and control in the grid faults,the detection for various fault conditions of the grid voltage phase angle,frequency,amplitude must be fast and accurate,so that the control system can quickly make the appropriate reaction. This paper based on the principle of symmetrical components,used dual dq transform for the positive and negative sequence voltage decoupling,analysised and improved the software PLL mathematical model based on double dq conversion. The simulation results show that the model can accurate and efficient detection voltage phase angle,frequency and amplitude in case of asymmetric grid faults.
戴志远,汤宁平,林莹莹. 基于锁相环的不对称故障下电网电压的检测方法[J]. 电气技术, 2014, 15(01): 30-33.
Dai Zhiyuan, Tang Ningping, Lin Yingying. Method of Voltage Detection in Case of Asymmetric Grid Faults Based on PLL. Electrical Engineering, 2014, 15(01): 30-33.
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2014, Vol. 15 
