Power System State Estimation Accuracy Enhancement Using Temperature Measurements of Overhead Line Conductors

• Autorzy: Wydra M. , Kacejko P.

Identyfikatory

DOI

10.1515/mms-2016-0014

• Języki publikacji: EN

Abstrakty

EN

Power system state estimation is a process of real-time online modeling of an electric power system. The estimation is performed with the application of a static model of the system and current measurements of electrical quantities that are encumbered with an error. Usually, a model of the estimated system is also encumbered with an uncertainty, especially power line resistances that depend on the temperature of conductors. At present, a considerable development of technologies for dynamic power line rating can be observed. Typically, devices for dynamic line rating are installed directly on the conductors and measure basic electric parameters such as the current and voltage as well as non-electric ones as the surface temperature of conductors, their expansion, stress or the conductor sag angle relative to the plumb line. The objective of this paper is to present a method for power system state estimation that uses temperature measurements of overhead line conductors as supplementary measurements that enhance the model quality and thereby the estimation accuracy. Power system state estimation is presented together with a method of using the temperature measurements of power line conductors for updating the static power system model in the state estimation process. The results obtained with that method have been analyzed based on the estimation calculations performed for an example system - with and without taking into account the conductor temperature measurements. The final part of the article includes conclusions and suggestions for the further research.

Słowa kluczowe

EN

power systems; state estimation; transmission line; conductor temperature measurement; dynamic line rating

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2016
• Tom: Vol. 23, nr 2
• Strony: 183--192
• Opis fizyczny: Bibliogr. 30 poz., rys., tab., wzory

Twórcy

autor

Wydra M.

• Lublin University of Technology, Faculty of Electrical Engineering and Computer Science, Nadbystrzycka 38A, 20-618 Lublin, Poland

autor

Kacejko P.

• Lublin University of Technology, Faculty of Electrical Engineering and Computer Science, Nadbystrzycka 38A, 20-618 Lublin, Poland

Bibliografia

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Uwagi

EN

The presented paper is the result of research the Dynamic Management of Transmission Line Capacities with the Application of Innovative Measuring Techniques, financially supported by the National Centre for Research and Development and the National Fund for Environmental Protection within the framework of the GEKON program (Generator of Ecological Concepts) for the execution period from June 01, 2014 to May 31, 2016.

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.