A Novel Approach to Noninvasive Measurement of Overhead Line Impedance Parameters

Ritzmann, D, Rens, J, Wright, PS, Holderbaum, W and Potter, B (2017) A Novel Approach to Noninvasive Measurement of Overhead Line Impedance Parameters. IEEE Transactions on Instrumentation and Measurement, 66 (6). pp. 1155-1163. ISSN 0018-9456

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Abstract

Transmission line impedance parameter estimation forms an essential part in modeling and monitoring of electricity networks. The accuracy of the estimated parameters has a direct impact on various functions of network operation, such as state estimation, fault location, and dynamic thermal line rating. Impedance parameters can be estimated from voltage and current measurements taken at the ends of the transmission line. Previous research has produced a range of methods with the purpose of maximizing the accuracy of the estimated values. However, the input measurements from the line ends can contain systematic errors that are introduced by the instrumentation channel and significantly reduce impedance parameter accuracy, which is not taken into account by most of the existing methods. In this paper, a novel method is presented that estimates correction factors for the systematic errors and, thus, increases the accuracy of impedance parameter values. The performance of the new method is compared with an existing one in a case study on laboratory measurements.

Item Type:	Article
Peer-reviewed:	Yes
Date Deposited:	13 Jul 2018 14:24
Publisher:	Institute of Electrical and Electronics Engineers
Additional Information:	"(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works."
Divisions:	Faculties > Science and Engineering
Subject terms:	0906 Electrical And Electronic Engineering, Electrical & Electronic Engineering
URI:	https://e-space.mmu.ac.uk/id/eprint/620870
DOI:	https://doi.org/10.1109/TIM.2017.2665958
ISSN	0018-9456

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