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arXiv · 2011.11880

Effective Parallelism for Equation and Jacobian Evaluation in Power Flow Calculation

Hantao Cui·Fangxing Li·Xin Fang
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Abstract

This letter investigates parallelism approaches for equation and Jacobian evaluations in large-scale power flow calculation. Two levels of parallelism are proposed and analyzed: inter-model parallelism, which evaluates models in parallel, and intra-model parallelism, which evaluates calculations within each model in parallel. Parallelism techniques such as multi-threading and single instruction multiple data (SIMD) vectorization are discussed, implemented, and benchmarked as six calculation workflows. Case studies on the 70,000-bus synthetic grid show that equation evaluations can be accelerated by ten times, and the overall Newton power flow advances the state of the art by 20%.

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Hantao Cui, Fangxing Li, Xin Fang. 2020-11-24. Effective Parallelism for Equation and Jacobian Evaluation in Power Flow Calculation. https://doi.org/10.1109/tpwrs.2021.3073591

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