摘要
为减少在非同步采样时DFT算法用于介损角测量时存在的误差,将加Blackman-Harris(布莱克曼-哈里斯)窗插值DFT算法和加Hanning(汉宁)窗插值DFT算法用于介损角的测量。分析了两种算法的原理,给出了它们的实现步骤。理论分析和仿真结果表明:在准确获得信号时这两种方法均能准确测定介损角、且受频率波动和谐波变化的影响小,相比之下后者实现容易、计算量较小。
To reduce the dielectric loss angle from asynchronous sampling, the Blackman-Harris windowed interpolated Discrete Fourier Transform （DFT） algorithm and Hanning windowed interpolated DFT algorithm are used. The principles of these two algorithms are analyzed. The realization procedures are demonstrated. The results are influenced little by frequency fluctuation and harmonic variation. Theoretical analysis and simulation result indicate that this method is valid.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2006年第5期11-14,24,共5页
Journal of North China Electric Power University：Natural Science Edition
关键词
介损角
谐波分析法
DFT
布莱克曼-哈里斯窗
汉宁窗
dielectric loss angle
harmonic analysis method
DFT
Blackman-Harris window
Harming window
