Differentiable Power-Flow Optimization
- URL: http://arxiv.org/abs/2603.28203v1
- Date: Mon, 30 Mar 2026 09:19:43 GMT
- Title: Differentiable Power-Flow Optimization
- Abstract summary: Differentiable Power-Flow (DPF) is a reformulation of the AC power-flow problem as a differentiable simulation.<n>DPF enables end-to-end propagation from the physical power mismatches to the underlying simulation parameters.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: With the rise of renewable energy sources and their high variability in generation, the management of power grids becomes increasingly complex and computationally demanding. Conventional AC-power-flow simulations, which use the Newton-Raphson (NR) method, suffer from poor scalability, making them impractical for emerging use cases such as joint transmission-distribution modeling and global grid analysis. At the same time, purely data-driven surrogate models lack physical guarantees and may violate fundamental constraints. In this work, we propose Differentiable Power-Flow (DPF), a reformulation of the AC power-flow problem as a differentiable simulation. DPF enables end-to-end gradient propagation from the physical power mismatches to the underlying simulation parameters, thereby allowing these parameters to be identified efficiently using gradient-based optimization. We demonstrate that DPF provides a scalable alternative to NR by leveraging GPU acceleration, sparse tensor representations, and batching capabilities available in modern machine-learning frameworks such as PyTorch. DPF is especially suited as a tool for time-series analyses due to its efficient reuse of previous solutions, for N-1 contingency-analyses due to its ability to process cases in batches, and as a screening tool by leveraging its speed and early stopping capability. The code is available in the authors' code repository.
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