BiGER Explore

Due to the massive development of power-electronics based components, the limits between the different power system modelling domains are becoming more and more questionable. Indeed, these components lead to fast dynamics in the system that both interact with the classical components slow dynamics but also between themselves. It means that sticking to electromechanical studies for transient stability would surely not be sufficient in the future. For the latter, there are new phenomena appearing in systems with a large share of power-electronics based involving the controls of the different power-electronics based components that can jeopardize the system stability. In particular, a new type of stability, known as converter-driven stability, has been added to the traditional stability problem classification. Indeed, examples have shown that the dynamics of the PLL or the value of some gains of the control can lead to a system instability even for small variations. In addition, a few preliminary results tend to indicate that these problems can appear before other traditional stability issues in case of weak networks (small SCR). In order to be able to capture these phenomena in a correct way, it is necessary to go beyond the traditional phasor modelling approach by not neglecting the existing faster dynamics. However, doing large scale long term EMT simulations is impossible at the moment due to the computational burden and lack of data that it represents. It is thus necessary to find new simulation approaches enabling to get similar results than the EMT ones without the disadvantages of it. These new methods should be scalable, robust, transparent and flexible if possible.

BiGER– Explore shall make possible the appropriate dynamic simulation tools for network operators and stakeholders by:

•    Build and share a set of use cases and their associated open-source benchmarks that illustrate the need for more detailed simulations

•    Build and share a state of the art of the existing methods developed to handle this issue

TU Delft, RWTH Aachen and RTE, under the umbrella of CRESYM organization

R. (Rashmi) Prasad

Rashmi Prasad received B. Tech degree in Electrical and Electronics Engineering in 2014 from BPUT, Bhuvaneswar and M. Tech from Indian Institute of Technology Dhanbad, India in 2017. She received her Ph.D. degree at the Department of Electrical Engineering, Indian Institute of Technology Roorkee, India in 2023. She was a Guest Researcher with The Department of Wind and Energy Systems at Technical University of Denmark in 2023. Since August 2023, she has been working as a Postdoc Researcher at TU Delft, Electrical Engineering, Mathematics, and Computer Science. Her expertise is in Power System Stability and Control and Integration challenges on converter interfaced devices in large power network.