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Based on object-oriented technology, analyzes the basic information model and summarizes the method and procedure of intelligent electronic devices (IED) modeling, which is explained by a protective device, concludes the problems which have come up in the process of IEC61850 Application in China. The standard named IEC61850 relay protection engineering(More)
This paper presents an efficient visualization and exploration approach for modeling and characterizing the relationships and uncertainties in the context of a multidimensional ensemble dataset. Its core is a novel dissimilarity-preserving projection technique that characterizes not only the relationships among the mean values of the ensemble data objects(More)
Scatterplots are widely used to visualize scatter dataset for exploring outliers, clusters, local trends, and correlations. Depicting multi-class scattered points within a single scatterplot view, however, may suffer from heavy overdraw, making it inefficient for data analysis. This paper presents a new visual abstraction scheme that employs a hierarchical(More)
Current energy-saving color design approaches can be classified into two categories, namely, context-aware dimming and color remapping. The former darkens individual regions with respect to the user interactions, and the latter replaces the color set with a new color set that yields lower energy consumption. Both schemes have drawbacks: color dimming tends(More)
The single phase arc grounding fault is a main fault form in medium voltage distribution networks. It is essential to build an accurate grounding arc model for fault analysis. In this paper, a new grounding arc model is built based on the MATLAB with the arc gap energy-balance theory. Comparing the simulation waveform with the experimental waveform, the(More)
Establishing the mathematical model of instantaneous positive sequence network of power source, grounding petersen coil, ground point, capacitance to the ground to the 10 kV medium-voltage resonance grounding system with instantaneous symmetrical component, establishing the mathematical model of instantaneous positive sequence network to resonance grounding(More)
DataV.js is an open source Javascript library based on D3.js and Rafael.js. It allows people with no programming knowledge to visualize their data freely. It is now applied in some websites such as Ali-pay.com and Taobao Index. I am one of the algorithm designers and the programmers. I designed and implemented some core components, such as the chord and the(More)