Dynamically Corrected Fast Estimators of Active and Reactive Power and Their Performance

• Autorzy: Szafran J. , Rosołowski E.
• Języki publikacji: EN

Abstrakty

EN

Development of several fast estimators of active and reactive power is presented. The estimators are considered from the point of view of the fast measurement of criteria values in power system automation devices. The main idea of the method is dynamical correction of transients realized thanks to recognition of fault instant and taking into consideration of post fault samples only. In the case of reactive power it is possible to get unique transient response and to realize dynamical correction. Increasing filter window starting from fault instant allows to get better accuracy of estimation in presence of noise. Having small noise it is possible to estimate the reactive power starting from one sample and the active power from two samples of increasing data window. The functions of dynamical correction can be calculated analytically or by using a digital simulation.

Słowa kluczowe

EN

power system protection; digital estimation; fast dynamically corrected measurement of power

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Present Problems of Power System Control
• Rocznik: 2018
• Tom: Nr 9
• Strony: 47--57
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Szafran J.

• Faculty of Technology and Computer Science, Wroclaw University of Science and Technology, Wroclaw, Poland

autor

Rosołowski E.

• Department of Electrical Power Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland

Bibliografia

• [1] REBIZANT W., SZAFRAN J., WISZNIEWSKI A., Digital Signal Processing in Power System Protection and Control, Springer-Verlag London Limited, 2011, (Available in: https://link.springer.com/book/ 10.1007/978-0-85729-802-7).
• [2] ROSOLOWSKI E., SZAFRAN J., Fast Estimation of Protection Criterion Values Using Dynamical Correction. Proc. of Eleventh PSCC, Avignon, August 30–September 3, 1993, Vol. II, pp. 805–811,
• (Available in: https://pscc-central.epfl.ch/repo/papers/1993/pscc1993_99.pdf).
• [3] ROSOŁOWSKI E., SZAFRAN J., Dynamically corrected fast estimators of current and voltage magnitude. IEE Proc.-Gener. Transm. Distrib., May 1995, Vol. 142. No. 3.
• [4] ROSOŁOWSKI E., Digital Signal Processing in Power System Control, Akademicka Oficyna Wydawnicza EXIT, Warszawa 2002 (in Polish), (Available in: https://libra.ibuk.pl/book/147405).
• [5] SZAFRAN J., WISZNIEWSKI A., Mesurement and Decision Making in Digital Power System Control, WNT, Warsaw 2001 (in Polish).
• [6] THORP J.S., PHADKE A.G., HOROWITZ S.H., BEEHLER J.E., Limits to Impedance Relaying, IEEE Trans. on PAS, Jan., Feb. 1979, Vol. PAS 98, No. 1, pp. 246–256.
• [7] UNGRAD H., WINKLER W., WISZNIEWSKI A., Protection Techniques in Electrical Energy Systems. Marcel Dekker, Inc., 1995.
• [8] WISZNIEWSKI A., Digital high-speed calculation of the distorted signal fundamental component, IEE Proc., January 1990, Vol. 137, Pt. C, No. 1, pp. 19–24.