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The analysis of severe blackouts has become an essential part of transmission grid planning and operation. This may include evaluation of rare-event probabilities, which can be difficult to estimate. While simulation offers flexibility to model large complex systems, efficiency remains a big concern when estimating very small probabilities. This paper presents an effective simulation technique to...
This paper presents an algorithm for selecting a compact subset of relevant signals for pattern classification problems involving multivariate time series (MTS) data. The algorithm uses a statistical causality modeling method to select relevant signals, and a correlation analysis method to remove redundant signals. The MTS signal selection algorithm along with the statistical modeling methods was...
Take Changzhutan urban agglomeration as a sample to analysis the planning method of coordinating the land use of the cities based on the ecological footprint analysis. In this thesis, the comprehensive measure of ecological carrying capacity of cities and the ecological environment's overall development in urban area are the two significant aspects to the eco-planning of urban agglomeration. And then...
This paper builds a reasonable and brief system model, which can be used for the power system stability simulation. This system model consists of the mathematical models of power units, their sub-control systems, the load and grid. Moreover, this paper established two Coordinated Control System (CCS) models with different logical configuration of the actual CCS and connected these CCS models to the...
Study and analysis the fuel leakage security of current LNG alternative fuel bus. Do the simulation on surrounding concentration and temperature of LNG bus fuel tank leakage by Computational Fluid Dynamics (CFD). By analyzing the influence of three different bus velocities, 0km/h, 30km/h and 80km/h, we have the conclusion from the simulation that when the bus gets faster, the influence of surrounding...
With the rapid development of science and technology, high-pressure vessel has been widely used in petroleum, chemical industry, aerospace, and pharmaceutical areas, and is the key equipment in these areas, and its structure increasing size, operating pressure and operating temperature getting higher and higher, and thus the design of pressure vessels have become increasingly demanding. This type...
Natural phenomenon simulation such as: ocean sea, spray, snow, rain etc. is a challenging topic in field of computer graphics. How to generate spray on sea? How to consider both wave spectrum and sea scale while simulating wave in visual system? How to implement the algorithm of wave generation in real-time? Based on analyzing the relationship between sea scale and wave spectrum, the wave model of...
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