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Graph Neural Networks for Transmission Grid Topology Control: Busbar Information Asymmetry and Heterogeneous Representations

Created by
  • Haebom

Author

Matthijs de Jong, Jan Viebahn, Yuliya Shapovalova

Outline

The rise of renewable energy and electrification is exacerbating power grid congestion, and topology control is emerging as a promising approach to alleviate congestion. This study investigates the impact of graph representations on topology control. We identify problems with existing uniform graph representations and propose a heterogeneous graph representation that addresses these issues. We compare and evaluate GNNs using these two representations with a fully connected neural network (FCNN) in an imitation learning task. The results show that heterogeneous GNNs perform best in in-distribution network configurations, followed by FCNN and uniform GNNs. Furthermore, both GNN types generalize better than FCNN in out-of-distribution network configurations.

Takeaways, Limitations

Takeaways:
GNNs using heterogeneous graph representations have shown better performance in topological control problems.
GNN has better generalization performance for out-of-distribution network configurations than FCNN.
The graph representation method has a significant impact on the performance of GNN.
Limitations:
The paper may lack a detailed description of the specific heterogeneous graph representation presented.
Further research is needed to determine the applicability of the proposed model to real power grids.
Further comparative analysis of other types of GNNs and/or other learning methods may be needed.
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