摘要
提出了一种基于相位差法的电网频率跟踪算法,适用于实时电力谐波分析.该算法主要包括采样信号的快速傅里叶变换(FFT),相位差计算及电网频率跟踪计算.软件设计结合VB和MAT-LAB软件的特点,开发了一种基于COM组件技术的电网频率监测系统,该系统将MATLAB中的电网频率跟踪算法做成COM组件,然后在VB中调用,提高了软件的开发效率和谐波分析的精度.经测试表明,系统设计人机交互界面友好,运行稳定.
A power grid frequency tracking algorithm based on phase diversity is presented, which can be ap- plied to real time power harmonics analysis. The algorithm consists of fast Fourier transform of sampled data, phase difference calculation and frequency calculation. The electric frequency tracking system based on COM components is characterized with the qualitios of VB and MATLAB softwares. The method can provide very high accuracy for harmonics analysis of power signal. Simulations show the interface is friendly and the system is sta- ble.
出处
《兰州工业高等专科学校学报》
2012年第3期24-26,共3页
Journal of Lanzhou Higher Polytechnical College
