摘要
光伏并网的孤岛主动式检测中,快速性与电流畸变之间的平衡是核心问题。为了提高孤岛检测效率,同时尽量减少对电网谐波的影响,在传统AFD的基础上提出了一种改进型的电流扰动策略CD-AFD,以CC2530芯片为核心,实现电网谐波谐波检测与分析。此策略基于Newton迭代法来使cf步长的改变以寻求最佳平衡点,从而有效改善稳定电流波形的总谐波失真(THD),同时在负半波加强扰动量能,提高检测速率。最后利用MATLAB仿真软件仿真验证该方法的可行性。
The balance between fast and current distortion is the key problem in the island active detection of PV grid connected. In order to improve the island detection efficiency and minimize the impact of the harmonic,an improved current disturbance strategy CD-AFD is proposed base on the traditional AFD. It takes CC2530 as the core to achieve the grid harmonic detection and analysis. The feasibility of the method is verified using MATLAB simulation software.
出处
《单片机与嵌入式系统应用》
2016年第2期62-65,共4页
Microcontrollers & Embedded Systems
