摘要
目前,对于过电压的识别主要依靠生产技术人员凭借经验,依据过电压波形的时间、幅值、频率等参数进行分析。但仅仅依靠这些参数,有时还不能对过电压进行完全正确的定性。由于各种过电压产生机理不同,其信号在波形几何特征上是有区别的。文中应用分形理论,对仿真得到的过电压波形进行分形维数计算,结果显示:同种类型过电压波形的分形维数随自身参数的变化而存在于一定的范围之内,不同类型的过电压波形,其分形维数的所在范围是不同的。该研究内容为过电压的辨别分析提供了一个有益的思路。
At present, the main way to recognize the over-voltage data are relying on experienced production and technical persons, who analyze it rely on the time, amplitude, frequency of over-voltage waveform. But sometime the over-voltage can＇t be determined only by these parameters. The reasons for over-vohage generated are varied which lead to the differences of geometric characteristics of waveform. This paper proposed to calculate the fractal dimension of over-voltage signal waveform from the simulation result according to fraetal theory. The result shows that the fraetal dimension of the same kind over-voltage exists in a certain range; the ranges of fractal dimension are different if the over-voltage is different. It provides a helpful method to analyze the over-voltage.
出处
《陕西电力》
2010年第4期17-21,共5页
Shanxi Electric Power
