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by cycomanic
956 days ago
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> Finally it is a meteorological reality that when it’s very cold in the UK and energy demands are high… it is also usually very still with no wind, and of course in the middle of winter when there are few hours of daylight helping us with solar generation. Your meteorological reality seems to not correlate with actual reality. In the UK the highest energy demand is actually correlated with high wind speeds [1] [1] https://iopscience.iop.org/article/10.1088/1748-9326/aa69c6 |
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>This reflects the variation in temperatures and wind speeds with season, with calmer, warmer conditions in summer and cooler, windier conditions in late autumn and early spring. However above the 75th percentile of demand, average wind power reduces, which occurs predominantly in winter and autumn. Understanding this downturn in wind power provides the motivation for this paper. Given our interest in high demand days, which predominantly occur in winter (figure 1, upper right), only winter days are considered.
>The tendency for lower wind power during higher winter demand is shown by the tilt of the density contours of the daily distribution (figure 1, lower left). It is also clearly seen when averaged across days of similar demand (figure 2, left). Average wind power reduces by a third between lower and higher winter demand, from approximately 60% to 40% of rated power.
Look at figure 2. Black is wind power, and the X axis is demand. Wind production capacity is down when demand is high.