European Network (ETSO-E) of Electric Transport Network Managers advanced on Friday Blackened Was due to the “complex queue of events” on April 28, and it was recorded Two periods of tension oscillations And frequency in electrical systems half an hour before the incident.
In a statement, the association, as in charge of the independent European inquiry of the incident, said that two oscillations were recorded at 12:33 pm, half an hour before the blackout. 12:03 and 12:07 and 12:19 to 12:21.
“Transport network managers (electric) and France (RTE) took action To alleviate these oscillations. At the time of the incident, there were no oscillations and the alternatives of the electrical system were within the normal functional range, ”Endo-e explained that France was exporting 1,000 MW (MW), 2,000 MW of Portugal and 800 MW of Morocco.
This event started at 12:32:57, and then in 20 seconds, a “Series of different travel generations” About 2,200 MW in southern Spain.
“In Portugal and France, no generation trips were found. As a result of these events, At least the frequency There is an increase in tension in Spain and Portugal, ”he collects in this early statement.
From 12:33:18 to 12:33:21, the frequency of the peninsula continued to fall into 48 Hercios, which implemented the coincidence of both Spain and Portugal. In turn, replaces current networks between France and Spain They were successfully disconnected before the loss of sync.
Thus, at 12:33:24 “The full decline of the iPerian electric system” High voltage cables between France and Spain also stopped transporting energy.
Restoration of network
At 12:44, the first line of 400 kV west of Spain and France was re -enforced, and 20 minutes later, interconnected Morocco and Spain have already operated.
From the beginning of the restructuring, many Spanish hydroelectrics have been launched with “black start -capable” to start the reorganization of the system. At 1:35 pm, the link The eastern part of the Franko-Spanish border was again active.
Also, 16:11 and 17:26 Spanish Peninsula Time, Portugal’s two electric mills have a black start -up capability “Previous attempts that failed.”
Later, the first line of 220 KV between Spain and Portugal gained energy at 6:36 pm, which accelerated the restructuring of the Portuguese system. In addition, at 9:35 pm, it was twist 400 KV connection It is in the south of the two countries.
Finally, the total recovery of the transfer system It was completed at 00:22 hours in Portugal April 29 and in Spain on a single day 04:00.
The ministry considers it as “good news”
For its part, the Ministry of Environmental Change and Population Challenge In the analysis of the causes of darkness, he considers a “good message” that has advanced, and the initial estimates of generation losses have been provided. In addition, “he welcomed” the post of a panel of experts who run the independent investigation of ENTSO-E.
“ENTSO- and has the exchange The reasons for the crisis are complex And half an hour before the incident, which confirms the TSO of Spain and France, tensions and frequency oscillations in European electrical systems have been reported for two years, “sources of the ministry pointed out.
Likewise, the department headed by the department Sarah Angeen He said the committee for the analysis of the crisis that continues to operate this weekend will meet again next Monday.
“The group will analyze all the components available available Will continue to work with all operators To find out the appearance of the incident, “they added.
(Tagstotranslate) Nationalality (T) (T) Blackout
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