Local and Remote Estimations Using Fitted Polynomials on Distribution Systems

Title: Local and Remote Estimations Using Fitted Polynomials on Distribution Systems
Authors: Murphy, Conor
Keane, Andrew
Permanent link: http://hdl.handle.net/10197/8153
Date: 18-Nov-2016
Abstract: This work describes a technique to define a single parametric equation that estimates remote conditions within a distribution network, in an online setting, without dedicated telemetry. In this novel approach, a departure from conventional state estimation is explored to facilitate a fully decentralized operation. Derived based on fundamental treatment of ac power flow, the electrical behavior of a section of network is defined to a tractable constraint space using regression analysis. In this non-iterative technique, a measurement set consisting of the local voltage magnitude, active and reactive power injections at a single node are the input to pre-computed polynomials. Remote current flow, active power and reactive power flow as well as remote and local voltages and sensitivities are estimated in a direct calculation from period to period. Accurate estimations are also found in the presence of transducer errors. To assess the applicability of this technique at differing voltage levels a range of reactance to resistance ratios are considered.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: IEEE
Journal: IEEE Transactions on Power Systems
Volume: 32
Issue: 4
Copyright (published version): 2016 IEEE
Keywords: Distributed estimationEnergy resourcesMultivariable functionsPower distributionVoltage measurement
DOI: 10.1109/TPWRS.2016.2630743
Language: en
Status of Item: Peer reviewed
Appears in Collections:ERC Research Collection
Electrical and Electronic Engineering Research Collection
Energy Institute Research Collection

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