LIU Ji, XIAO Wen-zhang, WEI Xin-lao. Transformation of Time Domain to Frequency Domain for Dielectric Response Characteristics[J]. 2011, 16(4): 40-44.DOI:
一种介电响应特性的时频域变换方法
摘要
为了解决利用介电响应特性进行电力设备绝缘诊断中频域法测量低频甚至超低频信号需要大量时间的问题
采用快速傅里叶变换(FFT)方法
将时域松弛电流变换到频域并计算得到低频的损耗因数
同时与频域的实际测量值进行了比较
发现两者的结果在很宽的低频范围内是一致的
结果证实了这一方法的可行性与实用性.
Abstract
In order to solve the problem of spending much time on measuring the low or ultra-low frequency signal in insulation diagnosis of power apparatus by using dielectric response characteristics
the Fast Fourier Transform(FFT) is used in this paper to transform the time domain relaxation current to frequency domain and calculates the low frequency dielectric dissipation factor.In addition
it is shown from comparing the calculating results with actual test data that there are coincident for both results in wide ...