In mountain regions
Work led to widespread power outage
The grid operator Austrian Power Grid (APG) has clarified the cause of the major power outage in the Salzburg mountain regions on Tuesday afternoon. Up to 120,000 households in Pinzgau, Pongau and Lungau were temporarily without power.
At the Kaprun substation, one of two 380/110 kV transformers was out of operation due to conversion work, while the second transformer had a technical fault. The transformer that had been switched off was immediately restarted so that the power outage was over for most households after just over 30 minutes. According to grid operator APG, this was a "chain of unfortunate circumstances".
Interesting fact: APG is currently building the Pongau substation as part of the construction of the 380 kV line. According to information from the grid operator, an additional substation could have prevented or significantly limited the power outage. The additional facility, which will go into operation at the same time as the Salzburg line, should make the grid more stable in future.
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