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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.

  • in reply to mapj1

    Thanks, this makes interesting reading.

    I hope this is not a stupid question: Why would disconnecting generating plant from the grid cause the voltage to increase?  

    Paul Adkins

  • in reply to mapj1

    google translate summary and conclusions

    In short, there was a lack of voltage
     control resources, either because they 
    were not sufficiently scheduled, or because 
    those that were scheduled did not provide them 
    adequately, or because of a combination of both, 
    but not because they were lacking in the country; 
    there was more than enough generating capacity
     to respond.
    MAIN RECOMMENDATIONS
In light of the conclusions obtained
     from the analysis, the Committee 
    proposes a series of actions to 
    prevent a recurrence of this type
     of incident. These include 
    strengthening supervision and 
    verification of compliance with 
    obligations by all stakeholders 
    in the electrical system, as well 
    as technical measures to strengthen
     voltage control capabilities 
    and protect against fluctuations 
    in the system. Key to this is 
    the implementation of OP 7.4, in 
    the hands of the National Commission
     of Markets and Competition (CNMC).
     This will allow asynchronous 
    installations to apply power 
    electronics solutions to manage
     voltage variations and may 
    contribute to cost savings with 
    the introduction of more competitive
     technologies. Furthermore, it 
    proposes increasing demand and the 
    flexibility of the electrical system.
     All of this will be supported by 
    the 2025-2030 Electricity 
    Planning—which will prioritize 
    industrial consumption—an increase
     in storage capacity, and a review
     of the regulation of adjustment 
    services and the system's technical 
    restrictions.
  • in reply to padkins

    PDF

    The official communique is here.  "Se presenta el informe del Comité de análisis de la crisis eléctrica del 28 de abril"

  • Many sources in the last 24 hours quoting a Spanish government report, e.g. this from Reuters, but no link to the actual government report.  Has anyone found this?

    Paul Adkins

  • in reply to Philip Oakley

    Yes, it looks like insufficient reactive power support led to voltage rise led to groups of electrically adjacent generators tripping off. The system operator and the generators have already blamed each other, and now the government has blamed them both. I’m waiting for the ENTSO-E report 

  • in reply to Philip Oakley

    Just to say that the BBC say that there's now a government report casting blame around https://www.bbc.co.uk/news/articles/c62d8k8edgxo "Spain's government blames huge blackout on grid regulator and private firms".

    I'm sure more discussion will follow Wink

  • in reply to Roger B

    Hello Roger:

    Your referenced article is excellent. 

    It should be noted that here in the US the price paid for electrical power is controlled at the State Level and not at the Federal level.

    As an example in Massachusetts one may pay $0.23 per kWh, while here in Florida it is about $0.11 per kWh.

    Peter Brooks

    Palm Bay 

  • in reply to Roger B

    This is also dangerous to compare a single figure, as at certain times of day for users who sign up to it, electricity is free..usually at some weekends when demand is lower.https://octopus.energy/free-electricity/  note that there is a funny 'marginal price' mechanism that means the wholesale prices for renewable are scaled by the price of gas..www.goodenergy.co.uk/.../

    Mike

  • in reply to Peter Brooks

    The comparison  of domestic electricity prices is difficult as there are various taxes and levies as well as exchange rate fluctuations. The UK is no longer included in the detailed European data. This site appears to give reasonable information:

     

    https://countryeconomy.com/energy-and-environment/electricity-price-household

    The UK is slightly cheaper than Spain, 0.2203 € per kWh against 0.2408 € per kWh. The ‘leaders’ in renewable energy sources, Germany and Denmark are the most expensive by far 0.3943 and 0.3763 € per kWh.

  • in reply to Roger B

    Hello Roger:

    I haven't seen anything about the cost of the power loss  due to grid component damage (example transformers or switch gear) both within Spain or say France.

    One article your referenced, mentioned the benefits that Spain is having due to its extensive use of renewables.

    Do you know how the residential electrical power costs in Spain compare to the UK ?

    Peter Brooks

    Palm Bay FL  

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