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.
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 range of low frequency,the results demonstrates the feasibility and practicability of this method.
出处
《哈尔滨理工大学学报》
CAS
北大核心
2011年第4期40-44,共5页
Journal of Harbin University of Science and Technology
基金
黑龙江省研究生创新基金项目(YJSCX2009-035HLJ)
关键词
介电响应
时域
频域
FFT
dielectric response
time domain
frequency domain
fast fourier transform
