IAI-Veranstaltungskalender

 
Seminar

Flexibility in Energy Systems; A Hybrid Method for Fast Analysis of Power System Dynamics in Large Networks

Freitag, 13. Juli 2018, 11:00-12:30
KIT-Campus Nord, Gebäude 449, Raum 140

Flexibility in Energy Systems (Nicole Ludwig):

With more renewable energy sources being fed into the existing grid, more problems arise due to the volatile nature of these energy sources. One way to cope with the volatility is a flexible demand side. Thus, changing the consumption behaviour to support an optimal supply strategy. We will investigate how flexibility on the consumption side can be determined from historical energy usage information. Additionally, as having flexibility in the system is not equal to using this flexibility, we have a look at incentive strategies for the power plant operator to achieve more flexibility usage in the energy grid he supplies. Lastly, full flexibility with a centralised planner is presumably not supported by the consumers. Thus the question arises, how close we can get to an optimal schedule if we can only schedule a few processes.

 

A Hybrid Method for Fast Analysis of Power System Dynamics in Large Networks (Michael Kyesswa):

The increasing network complexity with a high share of distributed and fluctuating generation from renewable energy sources introduces a new challenge in power system analysis. Current methods for analyzing transients and system stability mainly rely on the step-by-step numerical integration of the non-linear differential algebraic equations describing the system. Due to the computational complexity involved in such methods, the analysis is usually limited to a given set of scenarios during the planning process. However, the continuous fluctuation in the power system operating point necessitates fast analysis techniques during network operation to explore the impact all possible contingencies.

This presentation will focus on the description of a developed hybrid method combining direct-method and time-domain simulation approaches for fast analysis of power system dynamics. The method relies on a Lyapunov-based direct method for a quick selection of critical contingencies and identification of critical switching times. The time-domain simulation approach is then applied to the selected critical contingencies for further analysis of the transient response of the system. Analysis results using a standard IEEE-test network and a real network of Baden-Württemberg will be presented to illustrate the reliability of the method.

Referent/in
Nicole Ludwig, Michael Kyesswa
Veranstalter
Sekretariat
IAI
KIT
Karlsruhe
E-Mail: sekretariat does-not-exist.kit edu
https://www.iai.kit.edu
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