Warren Katzenstein

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Renewables portfolio standards (RPS) encourage large-scale deployment of wind and solar electric power. Their power output varies rapidly, even when several sites are added together. In many locations, natural gas generators are the lowest cost resource available to compensate for this variability, and must ramp up and down quickly to keep the grid stable,(More)
We use time-and frequency-domain techniques to quantify the extent to which long-distance interconnection of wind plants in the United States would reduce the variability of wind power output. Previous work has shown that interconnection of just a few wind plants across moderate distances could greatly reduce the ratio of fast-to slow-ramping generators in(More)
Introduction: The global and regional history of the surface of Venus can be interpreted by analysis of radar data and interpretation of individual mapped units. However, choice of mapping methods can lead to different interpretations of units. Areas containing volcanic plains and flows within the Nemesis Tessera quadrangle provide one example of areas in(More)