Use of fitted polynomials for the decentralised estimation of network variables in unbalanced radial LV feeders

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Title: Use of fitted polynomials for the decentralised estimation of network variables in unbalanced radial LV feeders
Authors: Rigoni, ValentinSoroudi, AlirezaKeane, Andrew
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Date: 19-Jun-2020
Online since: 2021-09-28T11:56:48Z
Abstract: The lack of comprehensive monitoring equipment in low voltage (LV) residential feeders, impedes a near-term deployment of centralised schemes for the integration of domestic-scale distributed generation (DG). In this context, this study introduces a technique that generates a set of fitted polynomials, derived from offline simulations and regression analysis, that characterise the magnitude of representative network variables (i.e. key for network operation) as a direct analytical expression of the controllable local conditions of any DG unit (i.e. active and reactive power injections). Crucially, the coefficients of these polynomials can be estimated, autonomously at the location of each DG unit, without the need for remote monitoring (i.e. using only locally available measurements). During online implementation, the method only consists of direct calculations (i.e. non-iterative), facilitating real-time operation. The accuracy of the polynomials to estimate the magnitude of the network variables is assessed under multiple scenarios on a representative radial LV feeder. Furthermore, the robustness of the method is demonstrated under the presence of new generation and electric vehicles.
Type of material: Journal Article
Publisher: Institution of Engineering and Technology (IET)
Journal: IET Generation, Transmission and Distribution
Volume: 14
Issue: 12
Start page: 2368
End page: 2377
Copyright (published version): 2020 The Institution of Engineering and Technology
Keywords: Distributed power generationDistribution networksElectric vehiclesPolynomialsPower system measurementReactive powerRegression analysis
DOI: 10.1049/iet-gtd.2019.1461
Language: en
Status of Item: Peer reviewed
ISSN: 1751-8687
This item is made available under a Creative Commons License:
Appears in Collections:Electrical and Electronic Engineering Research Collection

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