Risk of major blackout in Spain: key points and measures to protect the electrical system

  • Experts and executives in the electricity sector agree that the probability of another blackout is very low thanks to increased investment in safety.
  • The balance between synchronous energies, such as nuclear or gas, and renewables is fundamental to maintaining grid stability.
  • A comprehensive 445-page technical report reveals that the origin of the latest incident was multifactorial, involving everything from failures in photovoltaic converters to a lack of stabilizers.
  • The energy industry is requesting an extension of the lifespan of nuclear power plants to avoid instability and ensure a constant backup in the face of intermittent green energy.

Risk of major blackout in Spain

It's clear to everyone that the fateful incident that plunged much of the country into darkness marked a turning point in our perception of energy security. After the infamous blackout, the question many people ask themselves when they turn on the lights is whether they're truly safe. We are safe from a similar episode happening again. in the short term or if the system continues to hang by a thread.

Key industry leaders and regulatory bodies have been scrutinizing the situation to ensure we're not caught off guard again. Although the electrical grid is an incredibly complex technological network, the general feeling is that They've done their homework after the scare. and that the chances of a total collapse are now much lower thanks to a focus on prevention and active control.

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Lessons from zero electrical power and system safety

Spanish electrical system and safety

One of the key points that has been raised is that the blackout did not have a single cause, but was the result of a combination of technical and regulatory circumstances. It turns out that the stability of our network depends largely on... balance between synchronous and asynchronous energiesa balance that was compromised and is now being reinforced with multimillion-dollar investments so that the integration of renewables will be much safer.

The National Markets and Competition Commission insists that it is constantly monitoring the system to adapt it to changing times. The truth is that Spend more on paying for security It has become an absolute priority for electricity companies, even if it means an increase in operating costs, since the alternative of going without power is much more expensive for industry and the well-being of households.

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The role of nuclear energy in the face of instability

Nuclear power plants and grid stability

Against this backdrop, the debate on closing nuclear power plants has regained momentum with a more pragmatic approach. Major companies in the sector have formally requested a delay in the dismantling of plants like Almaraz, arguing that Having this base energy allows you to sleep peacefully. knowing that there is constant support that does not depend on whether the sun is shining or the wind is blowing at a given moment.

Maintaining these traditional technologies is not a whim, but a tool to prevent dangerous grid fluctuations. According to experts, if these energy sources are eliminated without an equivalent, stable substitute, we would be at a critical risk. a kind of constant sword of Damocles which could jeopardize the reindustrialization of the country and the competitiveness of our companies compared to our European neighbors.

In addition to generation, the transmission and distribution network is also a concern for executives, who warn that many industrial connection requests are being rejected due to a lack of capacity. For Spain to become an attractive destination for investment, this is fundamental. to expedite the deployment of electrical infrastructure and not become the lords of no, facilitating that energy reaches where it is really needed to boost the economy.

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A technical report that gets straight to the point

A comprehensive study of over four hundred pages conducted by European experts has shed light on the most specific failures that occurred in the seconds leading up to the collapse. It has been discovered, for example, that the instability of a converter in a photovoltaic plant triggered a series of electrical vibrations that They spread like a wave throughout the system Iberian, not finding sufficient cushioning.

Another finding that has caught the engineers' attention is the lack of stabilization equipment in some critical infrastructures, which greatly hampered efforts to stem the supply chain failure. Obtaining accurate, real-time data remains a challenge, as Much of the solar generation is very dispersed in secondary networks, which creates shadow zones where the network operator has limited visibility to act quickly.

Ultimately, the stability of the electricity grid in Spain depends on a delicate technological and regulatory framework that allows for no major errors. Having learned their lesson well after the major blackout and with the commitment from large energy companies to strengthen voltage controls, it seems that the path to a fortified network It is planned, provided that the planned investment schedules are met and an energy mix is ​​maintained that does not sacrifice security for speed.

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