Multi-Level Optimal Power Flow Solver in Large Distribution Networks

Abstract

Solving optimal power flow (OPF) problems for large distribution networks incurs high computational complexity. We consider a large multi-phase distribution network of tree topology with a deep penetration of active devices. We divide the network into collaborating areas featuring subtree topology and subareas featuring subsubtree topology. We design a multi-level implementation of the primal-dual gradient algorithm to solve the voltage regulation OPF problems while preserving nodal voltage information and topological information within areas and subareas. Numerical results on a 4,521-node system verify that the proposed algorithm can significantly improve the computational speed without compromising any optimality.

arXiv comment2020 IEEE SmartGridComm

References in corpus (6)

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• Distributed Optimal Power Flow Algorithm for Balanced Radial Distribution Networks
• Accelerated Voltage Regulation in Multi-Phase Distribution Networks Based on Hierarchical Distributed Algorithm
• Online Stochastic Optimization of Networked Distributed Energy Resources
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