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Solar photovoltaic systems continue to expand across the United States due to cost competitiveness, Federal and state incentives, and Renewable Portfolio Standards (RPSs). Transmission Planners and Operators must ensure high levels of grid reliability as increasing penetration levels further affect system variability and generation intermittency. A Time Step Simulation (TSS) is developed to study...
This paper discusses a study funded the California Energy Commission (CEC), performed by New Power Technologies with Southern California Edison to validate a system-wide, distribution element-level (high definition) power system simulation using field measurements. Comparisons of system simulation results and field measurements showed that the simulation is a statistically significant predictor of...
This paper discusses studies funded by the National Renewable Energy Laboratory (NREL) via SunPower, Inc. and the California Energy Commission (CEC), performed by New Power Technologies and Optimal Technologies that showed that high-penetrations of distribution-connected storage devices or plug-in vehicles can have adverse grid impacts due to their charging loads. Randomly-located or unmanaged additions,...
This paper presents a dynamic Proton Exchange Membrane Fuel Cell Model (PEMFC) model based on mass balance and semi-empirical equations. A complete PEMFC System containing a Power Conditioning Unit (PCU) is also investigated and various scenarios are simulated to assess the behaviour of a grid-connected FC in a Distributed Generation (DG) network.
The use of distributed generation (DG) within distribution systems has increased for the last two decades due to institutional requirements and technical advances. This study presents the impact of DG in different types of distribution systems in terms of voltage profile and short circuit analysis. Test systems representing three types of distribution systems (radial, loop and network) are simulated...
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