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djox ::MASOVNI NESTANAK STRUJE U TRI EVROPSKE ZEMLJE! Uvedeno vanredno stanje u Španiji: Građani upozoreni da sutra ostanu kod kuće
Citat:Masovni nestanak struje pogodio je Španiju i Portugal u ponedeljak, ostavljajući milione ljudi bez električne energije. Izveštaji ukazuju na probleme sa evropskom električnom mrežom, a bez struje su i delovi Francuske.
 [Link mogu videti samo ulogovani korisnici]
Ova vest od 17.juna prošla prilicno nezapaženo od strane medija.
Španska ministarka Sara Aagesen predstavila izveštaj komisije koja je radila na pronalaženju uzroka pada mreže:
Citat: Spanish government identifies critical failures in the 28-A blackout and points to Red Eléctrica
The report published on 17 June confirms insufficient voltage control capacity, planning failures, and premature disconnections that worsened the blackout. Red Eléctrica is now under scrutiny, with regulatory measures and potential sanctions expected.
On 28 April 2025, at 12:33:30, a system-wide blackout left the entire Spanish and Portuguese mainland grid without power, following a sequence of uncontained voltage events.
The final technical report on the crisis, presented by Minister Sara Aagesen on 17 June, was compiled over 49 days by a multidisciplinary committee and confirms that the blackout had a multifactorial origin.
However, the analysis identifies specific operational errors, technical breaches and shortcomings in foresight, particularly concerning the system’s voltage management.
“Some of the generator disconnections occurred before voltage thresholds set by regulations had been exceeded,” stated Aagesen during her address.
“These disconnections were triggered without technical justification, worsening the problem,” she added, aligning with the Committee’s conclusions.
Insufficient voltage control capacity
One of the report’s most decisive findings is the confirmation that the grid lacked sufficient dynamic voltage control capacity on the day of the blackout.
This shortfall was not due to a structural lack of resources, but to the low operational availability of synchronous power plants.
Of the ten units scheduled by the System Operator (Red Eléctrica de España) to provide voltage control—three nuclear and seven combined-cycle gas plants—one was declared unavailable on 27 April due to a fault and was not replaced, reducing effective capacity at a critical time.
These units were activated outside of the day-ahead electricity market, via remunerated technical restrictions, and were tasked with supplying or absorbing reactive power to regulate voltage across different parts of the country.
Despite this programming, the report reveals that some units failed to respond correctly to operating commands. In one case, reactive power was injected when absorption was required, increasing voltage instead of stabilising it.
Premature disconnections and cascading failure
The report notes that, between 12:32 and 12:33, voltage rose rapidly, triggering successive generator disconnections in multiple provinces.
“What’s important is that some disconnections occurred before reaching regulatory limits, while others were automatic due to self-protection mechanisms,” explained the minister. Voltage limits on the transmission grid range between 380 kV and 435 kV.
These disconnections sparked a chain reaction: each disconnected installation contributed to a further voltage increase, prompting more generators to trip offline.
The simultaneous frequency drop led to loss of synchronism with France and the isolation of the Iberian Peninsula from the European interconnected grid.
Structural measures and regulatory consequences
The report not only diagnoses but also proposes short- and medium-term measures. Firstly, it underscores the urgency of reinforcing oversight of technical compliance among system agents.
It also advocates the effective implementation of Operation Procedure 7.4 (PO 7.4), which would allow power electronics solutions to be deployed for voltage control in asynchronous installations.
Other proposed measures include:
- Reviewing the technical restrictions and balancing services scheme.
- Increasing electricity storage capacity and demand-side flexibility.
- Strengthening interconnection with France as a structural stabilisation measure.
Additionally, the report indicates its findings will be referred to the National Commission on Markets and Competition (CNMC) and other competent authorities to initiate the appropriate administrative proceedings. This could result in partial judicialisation of the case, depending on how the relevant bodies interpret the legal framework.
Izvor [Link mogu videti samo ulogovani korisnici]
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