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Residential solar Photovoltaic (PV) installations are increasing at a very high pace in the United States. In 2017 there are approximately one million residential solar PV installations in the US. A significant share of these installations are downstream of distribution transformers and thus connected to the secondary. To precisely analyze voltage variations induced by PV systems into distribution...
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...
Large thermal power plants are the main sources of generation for conventional power systems. The traditional scheme will be challenged by new features of future smart grid: renewable energy (RE) sources, distributed generation (DG), energy storage (ES) and new type of loads such as electric vehicles (EV). In all the changes above, the role of modelling and analysis related to security for a large...
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 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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