Accessibility navigation

A novel approach to noninvasive measurement of overhead line impedance parameters

Ritzmann, D., Rens, J., Wright, P. S., 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

Text - Accepted Version
· Please see our End User Agreement before downloading.


It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1109/TIM.2017.2665958


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
Divisions:Interdisciplinary centres and themes > Centre for Technologies for Sustainable Built Environments (TSBE)
Interdisciplinary centres and themes > Energy Research
Science > School of the Built Environment > Energy and Environmental Engineering group
ID Code:69898
Uncontrolled Keywords:Current measurement;Impedance;Impedance measurement;Measurement uncertainty;Systematics;Temperature measurement;Transmission line measurements;Accuracy;admittance measurement;impedance measurement;optimization methods;parameter estimation;phasor measurement unit;power transmission;transmission line measurements.


Downloads per month over past year

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation