Implementing Resilience Strategies in Future Digitally Interconnected Distribution Grids
摘要
One challenge in future digitally interconnected distribution power grids is that the digitalisation introduces the possibility of malfunctions, such as ICT network failures, which might lead to grid instabilities. Additionally, the rising complexity of the systems makes it harder to predict and respond to potential disruptions. Possible solutions for enhancing resilience in digitalized distribution grids are integrated fallback behaviours, local measurements and machine learning based operations implemented at single energy systems (assets) in the grid. In an example from the project IKTfree it was evaluated, how effective fallback behaviours in single assets can ensure stable grid operation in an event of ICT network failures. The analysed fallback behaviours range from keeping the latest power value to changing it to a pre-defined set point up to change the power level in accordance to the measured value at the connection point. The results show that these approaches can help to keep the voltage at house connection points and loadings of lines and transformer stations within operating limits. In conclusion, these results demonstrate the potential for fallback behaviours to enhance resilience in digitalized distribution power grids, even in situations where ICT control is lost.