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Aggregation of a generic high-voltage network using the grey-box approach for dynamic frequency investigations

Pfendler, Anna ; Jung, Lukas ; Nickel, David ; Hanson, Jutta (2023)
Aggregation of a generic high-voltage network using the grey-box approach for dynamic frequency investigations.
ETG Kongress 2023. Kassel, Germany (25.-26.05.2023)
Conference or Workshop Item, Bibliographie

Abstract

In the increasingly complex power system, the impact of active distribution networks is becoming more relevant for dynamic studies in the transmission grid. As there is usually only limited data available on distribution networks, this paper investigates the aggregation of a generic 110 kV network using a grey-box approach. Therefore, a detailed generic high-voltage network and a single-machine dynamic equivalent are modeled in Matlab/Simulink. The parameters of the dynamic equivalent are estimated using a curve-fitting procedure based on particle-swarm optimization (PSO). The ob-jective function of the optimization is the frequency curve after a load step. Secondary conditions are the exchanged active and reactive power with the overlaying transmission grid. The quality of the dynamic equivalent is tested for different numbers of parameters to be fit and different settings of the PSO. Results show that the frequency curve can be met by the aggregation model with only small deviations and that the number of parameters to be optimized, the PSO settings as well as the initial values of the parameters to be optimized have an impact on the aggregation results.

Item Type: Conference or Workshop Item
Erschienen: 2023
Creators: Pfendler, Anna ; Jung, Lukas ; Nickel, David ; Hanson, Jutta
Type of entry: Bibliographie
Title: Aggregation of a generic high-voltage network using the grey-box approach for dynamic frequency investigations
Language: English
Date: 25 May 2023
Publisher: VDE-Verlag
Book Title: ETG Kongress 2023: Die Energiewende beschleunigen
Series: ETG-Fachbericht
Series Volume: 170
Event Title: ETG Kongress 2023
Event Location: Kassel, Germany
Event Dates: 25.-26.05.2023
URL / URN: https://www.vde-verlag.de/proceedings-de/456108082.html
Abstract:

In the increasingly complex power system, the impact of active distribution networks is becoming more relevant for dynamic studies in the transmission grid. As there is usually only limited data available on distribution networks, this paper investigates the aggregation of a generic 110 kV network using a grey-box approach. Therefore, a detailed generic high-voltage network and a single-machine dynamic equivalent are modeled in Matlab/Simulink. The parameters of the dynamic equivalent are estimated using a curve-fitting procedure based on particle-swarm optimization (PSO). The ob-jective function of the optimization is the frequency curve after a load step. Secondary conditions are the exchanged active and reactive power with the overlaying transmission grid. The quality of the dynamic equivalent is tested for different numbers of parameters to be fit and different settings of the PSO. Results show that the frequency curve can be met by the aggregation model with only small deviations and that the number of parameters to be optimized, the PSO settings as well as the initial values of the parameters to be optimized have an impact on the aggregation results.

Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Electrical Power Systems > Electrical Power Supply with Integration of Renewable Energies
18 Department of Electrical Engineering and Information Technology > Institute for Electrical Power Systems
Date Deposited: 08 Dec 2023 12:56
Last Modified: 08 Dec 2023 12:57
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