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Open AccessArticle

An Iterative Scheme for the Power-Flow Analysis of Distribution Networks based on Decoupled Circuit Equivalents in the Phasor Domain

1
Department Electronics and Telecommunications, Politecnico di Torino, 10129 Torino, Italy
2
School of Electrical Engineering, Xi’an Jiaotong Unversity, Xi’an 710049, China
*
Author to whom correspondence should be addressed.
Energies 2020, 13(2), 386; https://doi.org/10.3390/en13020386
Received: 12 December 2019 / Revised: 7 January 2020 / Accepted: 10 January 2020 / Published: 13 January 2020
(This article belongs to the Section Electrical Power and Energy System)
This paper presents an alternative solution for the power-flow analysis of power systems with distributed generation provided by heterogeneous sources. The proposed simulation approach relies on a suitable interpretation of the power network in terms of a nonlinear circuit in the phasor domain. The above circuit interpretation can be solved directly in the frequency-domain via the combination of a standard tool for circuit analysis with an iterative numerical scheme, providing directly the steady-state solution of the power-flow of a generic distribution network. At each iteration, the resulting circuit turns out to be composed by two decoupled subnetworks, a large linear part and a set of smaller nonlinear pieces accounting for the load characteristics, with evident benefits in terms of the computational time. The feasibility and strength of the proposed simulation scheme have been verified on a large benchmark consisting of the IEEE 8500-node test feeder. Then it is applied to the statistical simulation of a power network accounting for the variability effects of renewable generators. According to the results, the proposed tool provides an effective alternative to the state-of-the-art approaches for power-flow analysis further highlighting the benefits of the application of well-established tools for circuit analysis to power-flow problems. View Full-Text
Keywords: power distribution systems; load flow analysis; distributed generation; steady-state analysis; Monte Carlo; variability assessment; uncertainty quantification power distribution systems; load flow analysis; distributed generation; steady-state analysis; Monte Carlo; variability assessment; uncertainty quantification
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MDPI and ACS Style

Memon, Z.A.; Trinchero, R.; Xie, Y.; Canavero, F.G.; Stievano, I.S. An Iterative Scheme for the Power-Flow Analysis of Distribution Networks based on Decoupled Circuit Equivalents in the Phasor Domain. Energies 2020, 13, 386.

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