GMLC at DISTRIBUTECH International®
GMLC will be at DISTRIBUTECH International February 7-9. Stop by booth #5609 to learn about our goals, research, and collaboration opportunities.
Method and Apparatus for Smart Battery Charging
Unlike most electric loads, electric vehicles are mobile. Consequently, one cannot necessarily know that an electric vehicle will be configured safely for any of the charging stations at which it might try to charge. Limitations might be imposed by any of the components, including battery packs, power electronic chargers, premise plug and wiring infrastructure. Furthermore, preferences (and perhaps hard limits) will be imposed by the electric utility, which might insist, for example, that electric vehicles charge off peak, or by vehicle owners, each of whom might wish to assert preferences that will affect charging costs and convenience. This invention describes a fuzzy approach for accommodating such limits and preferences from numerous sources.
Archive Sprinter
The Archive Sprinter tool is designed to efficiently process synchrophasor measurements from electric power grids and export data signatures that summarize the grid's behavior. Parallel processing will allow data to be processed quickly to enable practical analyses of archives spanning years. The grid's behavior will be summarized using a wide-array of signatures calculated from the input data. These signatures include values such as the mean, variance, maximum, and correlation coefficient. Such signatures will be useful in establishing baseline behavior and identifying deviations from the baseline. Identifying deviations will help researchers and utilities identify grid disturbances that can be further analyzed with related tools developed by PNNL.
Basin Assessment Spatial Planning Platform - Open Source
The tool intended to facilitate hydropower development and water resource planning by improving synthesis and interpretation of disparate spatial datasets that are considered in development actions (e.g., hydrological characteristics, environmentally and culturally sensitive areas, existing or proposed water power resources, climate-informed forecasts). The tool enables this capability by providing a unique framework for assimilating, relating, summarizing, and visualizing disparate spatial data through the use of spatial aggregation techniques, relational geodatabase platforms, and an interactive web-based Geographic Information Systems (GIS). Data are aggregated and related based on shared intersections with a common spatial unit; in this case, industry-standard hydrologic drainage areas for the U.S. (National Hydrography Dataset) are used as the spatial unit to associate planning data. This process is performed using all available scalar delineations of drainage areas (i.e., region, sub-region, basin, sub-basin, watershed, sub-watershed, catchment) to create spatially hierarchical relationships among planning data and drainages. These entity-relationships are stored in a relational geodatabase that provides back-end structure to the web GIS and its widgets. The full technology stack was built using all open-source software in modern programming languages. Interactive widgets that function within the viewport are also compatible with all modern browsers.
Multi-period Nash bargaining for Coordination of Distributed Energy Resources (Open Source)
Flexibility from distributed energy resources presents an enormous potential to provide various services to the smart grid. In this paper, we propose a unified hierarchical framework for aggregation and coordination of various flexible loads, such as commercial building Heating, Ventilation, and Air-Conditioning (HVAC) systems, Thermostatically Controlled Loads (TCLs), Distributed Energy Storages (DESs), residential Pool Pumps (PPs), and Electric Vehicles (EVs). Moreover, a multi-stage Nash-bargaining-based control strategy is proposed to coordinate different aggregations of flexible loads for demand response. Case studies are provided to demonstrate the efficacy of our proposed framework and coordination strategy in managing peak power demand in a community.
METHOD AND APPARATUS FOR COMPRESSING IONS (NIH iEdison No. 0685901-13-0008)
The invention in general relates to methods of compressing an ion packet inside an IMS based device for achieving high IMS resolving power, while maintaining the peak resolution. When a relatively broad ion packet in gas phase, is subjected to a nonlinear potential profile with a decreasing electric drift field; the ions in the high field region move faster than the low field region resulting in peak bunching. While ions drift over a long drift section with a constant electric field of a mobility device, they separate out based on their mobilities. However, individual peaks also broaden due to diffusion. In the present method, by using non-constant electric fields (DC) the peak broadening can be overcome. Due to nonlinear potential profile, the ions in different regions move with different velocities. Therefore when applied suitably, these fields can be used to bunch together ions in a broad peak to a narrow packet. When the different mobilities are sufficiently separated, the bunching is applied locally; this processes will not negatively affect the time separation (resolution) characteristics. When applied to close mobilities or peaks not well separated, some loss in time resolution may occur. This method can be used in any general mobility device, but is particularly attractive in SLIM devices where ion transport is practically lossless, facilitates long drift lengths, provides sufficiently resolved peaks to be effectively bunched.