期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
特快速暂态过电压信号的时频联合分析
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1. 河北科技大学党政办公室, 河北石家庄 050018;
2. 河北科技大学信息科学与工程学院, 河北石家庄 050018;
3. 华北电力大学电力工程系, 河北保定 071003 -
DOI：
Time-frequency Analysis of Very Fast Transient Overvoltage signal
摘要/Abstract
将短时傅里叶变换(STFT)的联合时频分析方法应用于特快速暂态过电压(VFTO)的研究中, 分析并处理了典型的VFTO波形. 仿真结果表明, 联合时频分析可以同时给出特快速暂态过电压随时间和频率的变化特性, 一方面可以对VFTO在时域或频域里的分析结果进行验证, 另一方面可以得到更多的VFTO信号特征.
The time-frequency analysis method based on short time fourier transform(sTFT) is presented. Experimental results show that the time-frequency analysis of VFTO signal based on short time fourier transform details on the time-frequency plane, and it can also reflect the characteristics of time and frequency accurately of the VFTO signal. The results can meet the requirements of choosing suitable parameters, and it also offers a kind of new method for VFTO signals. It is effective and accurate for obtaining the details of very fast transient overvoltage signal.