Steady-State Analysis of Electrical Networks in Pandapower Software: Computational Performances of Newton–Raphson, Newton–Raphson with Iwamoto Multiplier, and Gauss–Seidel Methods

Jan Vysocký, Ladislav Foltyn, Dejan Brkić, Renáta Praksová and Pavel Praks
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Jan Vysocký: ENET Centre, VŠB—Technical University of Ostrava, 708 00 Ostrava, Czech Republic
Ladislav Foltyn: IT4Innovations, VŠB—Technical University of Ostrava, 708 00 Ostrava, Czech Republic
Dejan Brkić: IT4Innovations, VŠB—Technical University of Ostrava, 708 00 Ostrava, Czech Republic
Renáta Praksová: IT4Innovations, VŠB—Technical University of Ostrava, 708 00 Ostrava, Czech Republic
Pavel Praks: IT4Innovations, VŠB—Technical University of Ostrava, 708 00 Ostrava, Czech Republic

Sustainability, 2022, vol. 14, issue 4, 1-12

Abstract: At the core of every system for the efficient control of the network steady-state operation is the AC-power-flow problem solver. For local distribution networks to continue to operate effectively, it is necessary to use the most powerful and numerically stable AC-power-flow problem solvers within the software that controls the power flows in these networks. This communication presents the results of analyses of the computational performance and stability of three methods for solving the AC-power-flow problem. Specifically, this communication compares the robustness and speed of execution of the Gauss–Seidel (G–S), Newton–Raphson (N–R), and Newton–Raphson method with Iwamoto multipliers (N–R–I), which were tested in open-source pandapower software using a meshed electrical network model of various topologies. The test results show that the pandapower implementations of the N–R method and the N–R–I method are significantly more robust and faster than the G–S method, regardless of the network topology. In addition, a generalized Python interface between the pandapower and the SciPy package was implemented and tested, and results show that the hybrid Powell, Levenberg–Marquardt, and Krylov methods, a quasilinearization algorithm, and the continuous Newton method can sometimes achieve better results than the classical N–R method.

Keywords: pandapower software; electrical networks; AC-power-flow analysis; Gauss–Seidel method; Newton–Raphson method; Iwamoto multiplier (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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