Australian Daily Wind Power Generation Data – Thursday 4 August 2022

Posted on Fri 08/05/2022 by

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By Anton Lang ~

This Post details the daily wind power generation data for the AEMO coverage area in Australia. For the background information, refer to the Introductory Post at this link.

Each image is shown here at a smaller size to fit on the page alongside the data for that day. If you click on each image, it will open on a new page and at a larger size so you can better see the detail.

Note also that on some days, there will be a scale change for the main wind power image, and that even though images may look similar in shape for the power generation black line on the graph when compared to other days, that scale (the total power shown on the left hand vertical axis) has been changed to show the graph at a larger size to better fit the image for that graph.

Thursday 4 August 2022

Total Wind Power Generation

This image shows the total power generated across the whole day by every wind plant in this vast AEMO coverage area for Australia.

The total Nameplate for all these wind plants changes as each new wind plant comes on line delivering power to the grid. That current Nameplate is 9854MW, and this is from the current total of 76 wind plants.

Note that the shape of this wind power load curve does not follow the shape of the main load curve for total power generation, and that is seen in the image below, the solid black line across the top of the image for that graph. Wind power generates its power only when the wind is blowing, hence it does not follow the actual power generation Load Curve, which is also the the exact same shaped curve as for actual power consumption.

For this data, I have added the times for the daily minimum, and the daily maximum, to show how they do not correlate with the actual times of minimum power consumption (around 4AM each day) and maximum power consumption, the evening Peak. (at around 6.40PM in Winter and earlier during the Summer Months.)

Daily Minimum – 4985MW (5.00AM)

Daily Maximum – 7304MW (8.50PM)

Average Wind Generation – 6121MW

Total Generated Power – 146.90GWH

Percentage Supplied By Wind Power At The Low Point For The Day – 26.5%

Percentage Supplied By Wind Power At Peak Power For The Day – 7077MW of 27765MW – 6.25PM – 25.5%  (Mid afternoon Peak with maximum rooftop solar added was 26215MW at 12.30PM)

Average Percentage Of Overall Total Power Generation – %

Daily Operational Capacity Factor – 62.12%

Wind Power Generation Versus Total Power Generation

This image shows the total power generated from all the wind plants in this AEMO coverage area, and compares it to the overall total generated power from every source of power generation, which is the black line at the top of the graph. Wind power is the green coloured area, along the bottom of this graph.

While the green colour in this image looks to be a different shape to the graph above, keep in mind here that the scale is completely different, and that green coloured Wind total is the same as for the image shown above, only with the scale changed so it can fit onto the graph.

Notes

  1. Finding Wind Power Average – On the graph, there are 25 hourly time points, starting with midnight and finishing with midnight. I have added the total at each of those hourly time points together, and divided the resultant total by 25 to give an average in MegaWatts. (MW)
  2. For total power in GWH, multiply the average daily power by 24, and then divide by 1000.
  3. For the Capacity Factor, that is calculated by dividing the average wind generation by the current Nameplate and then multiplying that by 100 to give a percentage.

Comments For This Day

As I mentioned yesterday, with that large Low pressure weather system hanging around for longer than usual in that area where there is the greatest concentration of wind plants, then today might be another of those days of record power generation for wind, and that indeed proved to be the case.

Wind again reached its highest point in time maximum power generation, and that was at 8.50PM when it reached a maximum of 7304MW, the highest wind has ever been, and that was at a Capacity Factor (CF) of 74.12%,  but again, as I have also mentioned before, that maximum on this day needs to be taken in context with the Capacity Factor percentage, (the relationship between actual power generation and wind total Nameplate) because the highest that maximum has been was at the lower Nameplate of 8587MW (currently 9854MW) and at that lower Nameplate, wind delivered that previous high percentage CF of 74.62%, and for that high to be broken, then this level of Nameplate needs to deliver a maximum of 7354MW.  This day also saw the highest whole of day power generation for wind, and that was 146.90GWH across the whole 24 hour period of this day, and that was at a CF of 62.12%.  Now, that also needs to be taken in context with CF, as the highest that total generated power has been was also with the lower Nameplate, and that total was at a CF of 67.66%, so for the new Nameplate to achieve higher than that, then the new total generated 24 hour power generation needs to be 160GWH, and the level for this day was 13GWH lower than that. You may think that this is using mathematics as semantics, but as I have always said, the single most important thing when it comes to wind power generation is ….. CAPACITY FACTOR. (CF)

Calculated from that overall 24 hour power delivery, the average for this day was 6121MW, and that gave wind generation a daily operational CF of 62.12%, and that was thirty two percent higher than the year round average, so, more than double that yearly average in fact. Wind generation was still high at the usual time of the evening Peak of maximum power consumption, and at that time, wind was delivering a healthy 25.5% of all the generated power from every source. Now here, again let me point out the irony in all of this. On what is probably the single best day’s power generation ever, it can still only deliver a QUARTER of what is essentially required ABSOLUTELY. Even on a day of such high power generation, there was still a substantial difference between the low for the day and the high, and for this day, that gap was 2319MW.

*****

Anton Lang uses the screen name of TonyfromOz, and he writes at this site, PA Pundits International on topics related to electrical power generation, from all sources, concentrating mainly on Renewable Power, and how the two most favoured methods of renewable power generation, Wind Power and all versions of Solar Power, fail comprehensively to deliver levels of power required to replace traditional power generation. His Bio is at this link.

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