Operation of voltage transformer in grids with distorted signals

• Autorzy: Kasprzak A. , Orlikowski M. , Brodecki D.
• Konferencja: Konferencja “Integrated Optics – Sensor, Sensing and Methods” (IOS 2011) Szczyrk, luty 2011
• Języki publikacji: EN

Abstrakty

EN

Non-sinusoidal currents and voltages caused by nonlinear loads appear in power grids more and more frequently. Determination of the voltage transformer accuracy in such conditions makes a problem. Firstly, due to lack of definition of errors for distorted signals and secondly, typical measurement bridges do not accept higher harmonics. In the paper, the new definition of transformation error for distorted voltages has been proposed and some measurement results have been presented.

Słowa kluczowe

EN

voltage transformer; distorted signal; higher harmonic; accuracy; error

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2011
• Tom: Vol. 59, nr 4
• Strony: 551--554
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Kasprzak A.

autor

Orlikowski M.

autor

Brodecki D.

• Institute of Electrical Power Engineering, Technical University of Lodz, 18/22 Stefanowskiego St., 90-924 Łódź, Poland,

Bibliografia

• [1] IEC 60044-2 ed1.2 Consol. with am1&2 (2003-02), Inductive Voltage Transformers, Instrument transformers – Part 2, webstore. iec.ch/webstore/webstore.nsf/.../29836 (2003).
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• [4] A. Kasprzak, M. Orlikowski, and D. Brodecki, “Limitation of compact fluorescent lamp input current harmonics with Valleyfill circuit”, Electrotechnical Review 86 (3), 129–131 (2010), (in Polish).
• [5] A. Kasprzak, M. Orlikowski, and D. Brodecki, “On some EMC aspects of widespread usage of compact fluorescent lamps”, Electrotechnical Review 83 (9), 104–105 (2007), (in Polish).
• [6] A.Kasprzak, M.Orlikowski, and D.Brodecki, “About measurements of input current harmonics in computer power supplies with PFC controls”, Scientific Notebooks Technical Univ. Łódź 103, 211–220 (2005), (in Polish).
• [7] I. Wasiak and Z. Hanzelka, “Integration of distributed energy sources with electrical power grid”, Bull. Pol. Ac.: Tech. 57 (4), 297–309 (2009).
• [8] A. Cataliotti, D. Di Cara, A. E. Emanuel, and S. Nuccio, “Influence of current transformers on the measurement of harmonic active power”, 16th IMEKO TC4 Symp. Exploring New Frontiers Instrumentation and Methods for Electrical and Electronic Measurements 1, http://www.imeko.org/publications/tc4-2008/IMEKO-TC4-2008-184.pdf) (2008).
• [9] S. Svensson, “The significance of harmonics for the measurement of power and other AC quantities”, PhD Thesis, Department of Electric Power Engineering of Chalmers University of Technology, Goteborg, 1999.