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Iberien Peninsular Blackout

Roger B

Any thoughts/information on what happened? Was it a lack of spinning reserve?

Was it " The Portuguese operator, REN, said the outage was caused by a “rare atmospheric phenomenon”, with extreme temperature variations in Spain causing “anomalous oscillations” in very high-voltage lines."

as is written in the Guardian?

Electricity restored to 90% of Spain and most of Portugal after massive power outage | Spain | The Guardian

The Italien blackout from a few years ago had a definate cause in the tripping of interconnetors from Switzerland during a storm.

Parents

  • A few points that seem to come out of this while we wait for more official information.

    1) Is frequency still a useful measure of grid stability and safety with the ever increasing amount of invertor connected generation and load.?

    2) What could replace frequency as a control measure?

    3) Overloads and trip outs will always occur. How can the spread be better controlled? How can the recovery be improved?

    4) Can the inertia and frequency control of a rotating generator be replaced by an inverter? A rotating generator with electromagnetic or fuse overload protection and transformer coupling can take significant short term overloads, maybe a factor of 3 for 10 seconds. This would require a significantly overrated and more expensive inverter system.

    5) Is transient stability also a problem to be addressed by inverter connected devices. I started looking at my old uni. text book, Electric Power Systems by B.M. Weedy but decided my maths is no longer up to it.

Reply

  • A few points that seem to come out of this while we wait for more official information.

    1) Is frequency still a useful measure of grid stability and safety with the ever increasing amount of invertor connected generation and load.?

    2) What could replace frequency as a control measure?

    3) Overloads and trip outs will always occur. How can the spread be better controlled? How can the recovery be improved?

    4) Can the inertia and frequency control of a rotating generator be replaced by an inverter? A rotating generator with electromagnetic or fuse overload protection and transformer coupling can take significant short term overloads, maybe a factor of 3 for 10 seconds. This would require a significantly overrated and more expensive inverter system.

    5) Is transient stability also a problem to be addressed by inverter connected devices. I started looking at my old uni. text book, Electric Power Systems by B.M. Weedy but decided my maths is no longer up to it.

Children
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