VC++6.0 实现变压器故障诊断改良三比值法的编写，同时实现txt文件的读写。-Use VC++6.0 to realize transformer fault diagnosis with improved three ratio method, and the same time .

基于傅里叶变换后的峰值和次峰值的比值对非整周期fft的幅值和相位进行校正，其中添加不同窗函数。(Based on the ratio of peak to sub peak after Fourier transform, the amplitude and phase of non periodic FFT are corrected, in which different window functions are added.)