01-15-2019
APG and ENTSO-E comment on frequency drop
Last Thursday, 10 January 2019, at around 9 p.m., a deviation from the 50Hz mid-frequency to 49.8Hz was registered in the Continental European (CE) Power System which comprises the synchronised transmission grids of 25 countries.

 

As foreseen in such cases, immediate collective actions have been taken by the transmission system operators (TSOs) of the CE Regional Group and the underfrequency was rectified within a few seconds. The incident was clearly sufficient to alert the TSOs, but at no time did it jeopardise the European security of supply.

Nevertheless, there have been reports in some Austrian media about a potential interruption of the European electricity supply, comparable to the event of November 2006, when ten million households in France were disconnected from the grid as a precautionary measure. These press reports have provoked reactions from TSCNET shareholder APG, the Austrian TSO, and the European Network of Transmission System Operators for Electricity (ENTSO-E), who both stated that the comprehensive technical analysis is still pending but that there was no risk of a major power failure at any time.

APG has already made initial statements on the incident. According to APG, the cause was most likely a combination of several circumstances, but the decisive factor was probably a data error at another TSO at a transfer point on the Austro-German border. This occurrence could not be compared with that of 2006, when line overload was the reason.