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The occurrence of wide-area cascading events suggests that the power system is operating at reduced safety margins. The generation dispatches provided by current energy markets may influence the risk of cascading outages. This paper aims at estimating the risk of cascading outages associated with diverse dispatch solutions by integrating market-based power dispatch models and a cascading failure analysis...
Modeling and abstraction is key in all engineering processes and have found extensive use also in software engineering. When developing new methodologies and techniques to support software engineers we want to evaluate them on realistic models. However, this is a challenge since (1) it is hard to get industry to give access to their models, and (2) we need a large number of models to systematically...
A biological system as considered in systems biology is understood in the form of a network of interactions among individual biochemical species. Complexity of these networks is inherently enormous, even for simple (e.g., procaryotic) organisms. When modeling and analyzing dynamics of these networks, i.e., exploring how the species evolve in time, we have to fight even another level of complexity...
Replication strategies directly affect the performance of grid resources in data grid. As the replication strategies are of great importance to data grid, this article built up a simulative environment with OptorSim simulators, and analyzed different replication strategies according to different accessing models. It is verified by the simulation results that the replication strategies adopted in this...
The use of an agent based simulation platform for market structure policy simulations in a restructured electricity markets reveal subtle insights with respect to the limited exercise of market power in situations where more conventional oligopoly models would suggest greater exploitation. The paper describes a detailed market simulation platform with agent strategies emerging as a result of simple...
This paper investigates and simulates a coloured stochastic Petri nets model for depth evaluation intrusion detection. Network attack behaviors are very complexity sometimes, it is difficult to capture all of them. In this paper, we could realize what them happened with analyzing and simulating an intrusion. The experimental results demonstrated that the CSPN model approach was an efficient and helpful...
The size of unified modeling language (UML) models used in practice is very large and ranges up to hundreds and thousands of classes. Querying of these models is used to support their quality assessment by information filtering and aggregating. For both, human cognition and automated analysis, there is a need for fast querying. In this context performance of model queries becomes an important issue...
The conception of an electronic-analog real-time hydro-turbine simulator is presented as a companion paper to the hydro-generator simulator previously published. Penstock, speed regulator and damping unit are accounted for. The system can 1) simulate any Pelton, Francis, Kaplan, or Propeller type of hydraulic turbine; 2) take care of the nonlinear relationships between power, water flow, speed, water...
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