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The integration of electric vehicles (EVs) into the electric power distribution system poses numerous challenges and opportunities for optimizing energy management and system operations. Electric vehicle grid interfaces (EVGIs), essentially bidirectional power converters, allow for charging/grid-to-vehicle (G2V) and discharging/vehicle-to-grid (V2G) power transfers. A power dispatch estimation (PDE) model for V2G, based on availability of EVs in a distribution system and capabilities of the distribution system, is needed to assist in grid operations. This paper presents the development of a PDE model based on nodal power flows to capture the complex spatiotemporal dependencies inherent in G2V and V2G patterns. The hierarchical structure of a distribution system, feeder to EVGI node, is taken into consideration for PDE. Typical PDE estimation results are presented for the IEEE 34 test node feeder distribution system allocated with EVGIs.
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Reflectarray Concept for Interference Mitigation in Radio Astronomy
This paper proposes a composite reflectarray system for realizing a reflector antenna for radio astronomy applications. The system is equipped with a tunable reflectarray rim that enables nulls to be formed within the field of view and reduce the impact of interferers on the observations. Full-wave simulation results of a physical reflectarray system are presented to validate the concept.
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- Award ID(s):
- 2128506
- PAR ID:
- 10535301
- Publisher / Repository:
- IEEE
- Date Published:
- ISBN:
- 978-1-6654-4228-2
- Page Range / eLocation ID:
- 1143 to 1144
- Format(s):
- Medium: X
- Location:
- Portland, OR, USA
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Conference Paper:
- https://doi.org/10.1109/USNC-URSI52151.2023.10237818
