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Based on interference sources, an anti-interference measurement method for the zero sequence parameters of transmission lines is studied. The principle, measurement method and calculation formula of this method are explained in detail. The hardware structure of the measurement system and digital simulation results are given. Finally, an example of using the method to measure the zero sequence parameters...
Based on the actual data collected from black spots on mountain highways, this paper investigated the influences of roadways' attributes upon vehicle speed. The significance of different factors contribute to vehicle speed were represented by the modified coefficients of roadway attributes, and a model was established based on the modified coefficients. Moreover, we took advantage of Logarithmic regression...
Online monitoring partial discharge (PD) is a valid means to prevent sudden accident of the power transformer. How to discern and suppress interference is the key to PD online measuring. Chaotic system has initial value sensitiveness and noise immunity. According to the chaotic system special function in the faint signal measure, this paper applies chaotic theory in the PD online detecting to suppress...
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