Why does the problem arise?
For over a hundred years, traditional power plants with rotating generators have provided stability to the grid. When we replace these with power electronic converters – which connect solar, wind and batteries to the grid – the dynamics change. Converters are flexible and efficient, but they behave differently from generators. They can introduce rapid and unpredictable changes in the power grid, which may lead to:
- Fluctuations in voltage and current
- Equipment failures
- In the worst case, power outages
Such phenomena related to converter-driven stability have already caused outages in several countries – including Norway.
What does KreDiT do?
The KreDiT project tackles this challenge by developing smarter, data-driven and real-time tools for monitoring and prevention. The goal is clear: to detect the risk of instability early and intervene before problems escalate.
The project combines:
- Analysis of real-world events
- Laboratory testing with advanced equipment (Hardware-in-the-Loop)
- New methods for real-time measurement and prediction
A key part of the work is to use existing infrastructure – such as sensors and logging units in substations – to collect data. KreDiT explores both passive methods (natural disturbances) and active methods (controlled signals) to identify sources of instability.
Why is this important?
As the grid becomes increasingly dominated by power electronics, it also becomes more vulnerable. Low rotating mass (generators) and complex interactions between many converters mean that traditional monitoring methods are no longer sufficient. KreDiT will:
- Develop new algorithms and tools for real-time monitoring
- Produce guidelines and recommendations for grid operators
- Contribute to future standards and grid codes
This is crucial to ensuring that the transition to renewable energy takes place without compromising security of supply.
Who is behind the project?
The project involves research institutions (SINTEF Energy Research, NTNU and ZHAW), grid operators (Statnett, Fagne, Lede and Elvia) and technology suppliers. This collaboration ensures that the solutions are practically applicable and can be deployed in real grids.
The way forward
The results from KreDiT will be shared openly and help make the power grid smarter and more robust. This is not just a technology project – it is an important step towards a more sustainable and reliable energy system that allows for more solar and wind power.