More pain from solar panels and the wind choke points again

Where is the upside of all the things we are doing to save the planet? Jo Nova reports on the voltage issues caused by solar panels.

On the choke points for wind power – the times of minimum wind that set the ceiling for wind power regardless of the installed capacity and the average performance. My reference point is 24-hour cycle up to 7 this morning. Yes I know it is not 7 now so I should have done a screen shot.

The peak demand for power yesterday was 23GW at 7pm, just as the sun went down and Wind was providing 1GW or 4.4% of demand. Wind did better between 11am and 4 pm with 1.6GW and solar was fairly steady at 1GW from 9 to 4.

The crunch comes when demand is highest and wind is lowest. This is not the testing time of year, that comes in high summer when demand gets up around 28GW. Watch this space in February and see how Victoria and SA are travelling at sunset during a heatwave with wind delivering less than 5% of Installed Capacity.

Posting at 10am, wind has gone as low as I have seen it, down towards 0.3GW and 6% of Installed Capacity. Academic today but not in summer.

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17 Responses to More pain from solar panels and the wind choke points again

  1. stackja

    Solar wind power on calm hot summer nights?

  2. Surprisingly, this was reported by Their ABC. But they did try and argue it down as usual.

  3. wal1957

    I am convinced that the only way that the voting public will understand what this ‘green’ energy has in store for them is when the blackouts occur. The apathy of the voter needs a good healthy kick in the backside and that appears to be the only way that the voters are going to get it.

  4. Empty queue at the local supermarket for the check out chick of no particular religion.

    It says something, not sure what.

  5. Ian MacCulloch

    And from The Global Warning Policy Forum:

    “Electricity system management costs in Germany are spiralling, in large part due to the sharply increasing costs of compensating renewable generators when their output is curtailed in order to preserve system stability. This, and other prominently criticized failures of the Federal government to control the cost of the Energiewende, have all the makings of a major political issue.”

  6. Rafe Champion

    A nice point Ian, here we have to compensate heavy power users when they are obliged to participate in load shedding to protect the grid and it must be only a matter of time before there is enough wind in the system to demand the German strategy to keep our grid under control.

    Has anyone got some good links to explain how the load shedding system works and is there a running commentary on the process so we know when it is happening and where?

  7. NT Oldie

    Hi Rafe

    Your doing a great job highlighting and exposing the renewable scam and the future potential problems that will occur to the reliability of Australian electricity networks.

    The full name for load shedding is UFLS “under frequency load shedding”, and this is a good example, the fush & chup Kiwis call it frequency keeping.

  8. wal1957

    NT Oldie…

    It looks like a disaster waiting to happen

  9. mduni

    It is staggering that in the middle of a bright summer day longreach solar farm is outputting 4% of nameplate.

    Unbelievable.

  10. yackman

    at our rural location we have seen some high voltage ( 253 V) on occasion and also some very low voltage!! The latter when a phase has been lost in the area. OK if you are home to turn stuff off.
    I am looking to have a monitor installed with WiFi to the Desktop. it is a pain to have to cycle the ‘Smart Meter’ to get info at the time. The greatest value for home use is 5 pm on in Summer but no use without lots of storage which is uneconomic.

  11. Rohan

    Im not so sure how NSW will fare much better. Like Vic and SA, they no longer have the base load nameplate capacity to be self sufficient. The entire eastern seaboard is propped up by Qld. When Liddel and Qld start closing down thier thermal plants, 20 million aussies will be sitting in the sweltering dark.

  12. RobK

    Yackman,
    Rural lines tend to be long and have higher impedence. They are more prone to voltage swings. You can install a phase-failure relay for protection of a phase dropping out. Over and under voltage protection is also helpful in some cases. As is lightening protection via surge arrestors(especially on single wire, earth return, country supply). It can all get a bit pricey, so it depends on the criticality of the load.

  13. .

    RMS at 253 V implies peak voltage of 357V.

    Peak voltage of nameplate 220V is 311 V.

    Not long until stuff starts breaking down on people. God forbid if any gizmos you own have common emitter transistors.

  14. .

    Rural lines tend to be long and have higher impedence. They are more prone to voltage swings.

    It is a little bit mad that we’d be better off perhaps with a hybrid system of AC/DC distribution. Now, think of the profit potential in inventing a modular, high power application DC voltage transformer.

  15. RobK

    …system of AC/DC distribution
    Ultimately, if the RE business persists, I suspect it will require a heavy DC backbone the length of the country.

  16. .

    More of an incentive to get the patent on the DC transformer!

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