Nordics undervoltage and frequency drop on 26.04.2023
May 10, 2023 15:00 Scandinavia faced power supply problems at 04:40 UTC on April 26. As a result, there was a power outage in the Stockholm region and a drop in the grid frequency to 49.3 Hz in the entire grid area.
Grid Frequency Drop to 49.84 Hz on 28/03/2023
Mar 31, 2023 22:00 On 03/28/2023 starting at 16:00 UTC, a strong and prolonged underfrequency event occurred in the UCTE network area. The event is unusual in several respects: (1) The UCTE network frequency drops below 49.84 Hz. (2) The system takes over three minutes to return to above 49.9 Hz. (3) The power supply between Western/Central Europe and Eastern Europe drifts sharply apart.
System split due to the Earthquake in Ecuador
Mar 19, 2023 20:00 Following the heavy earthquake in the region between Ecuador and Peru on 18 March 2023 there was a system split between Ecuador and Columbia. (Origin of the picture: Sageo, CC3.0)
Load Shedding in South Africa
Feb 23, 2023 14:12 At the beginning of 2023, the number of references regarging load sheeding in South Africa, also in metropolitan areas such as Johannesburg, Cape Town and Pretoria, in some cases lasting up to 11 hours.
Forecasting Model for the direction of aFRR activation in Germany
Feb 08, 2022 09:35 The aFRR forecast tool estimates the sign of the average aFRR demand of the current quarter hour. The average aFRR activation of the preceding quarter hour is the basis of the forecast, together with frequency information.
Analysis: the periodic patterns of the network frequency
Sep 23, 2021 22:00 Imbalances between generation and consumption of electrical energy are visible in real time in the grid frequency. Such imbalances are often market driven and therefore recurrent. An analysis of the periodic components of the grid frequency.