摘要
由于电力系统频率波动的影响,用于测量介损的谐波分析法很难满足整周期采样,产生的泄露误差将影响基波相位测量的精度。分析了频谱泄露和栅栏效应产生的原理。为了提高谐波分析法的计算精度,对谐波分析法进行了改进,并与未改进方法进行了对比,并用MATLAB软件进行了仿真,通过仿真证明了方法的有效性。
Because of the frequency fluctuation in power system, the harmonics analysis approach applied to measuring dielectric loss can hardly meet the requirements for periodic sampling, and the t accuracy is affected by the leakage error. This paper discusses the principle of spectral leakage and hurdle effect. To improve the accuracy, the paper introduces a modified algorithm and then compares the new algorithm with the unmodified one. Simulations of the new algorithm through MATLAB verify its validity and feasibility.
出处
《电网与清洁能源》
2012年第1期45-48,共4页
Power System and Clean Energy
关键词
介损
谐波分析
傅里叶变换
误差分析
采样频率
dielectric loss
harmonies analysis
Fourier transform
error analysis
sampling frequency
