Selected problems of turbogenerators ptotection

• Autorzy: Belán A. , Eleschová Ž.
• Języki publikacji: EN

Abstrakty

EN

The report brings solutions for selected failure conditions of turbogenerators in power plants. From the point of view of the stability of the power system (PS), the loss of excitation and the following drop-out of these turbogenerators belong to significant failure conditions of turbogenerators of high unit power. The electric protections of turbogenerators play an important role in systematic failure elimination [2], [14]. A complex solution of the protecting system of the most important devices of power plants (turbine, alternator, block transformer) taking into account various operation states faces a problem of dealing with the protection system at forbidden frequencies [9]. The frequency or angular velocity is one of important parameters of operation of the PS [10]. At transition processes the frequency of voltage in PS affects not only the frequency of the fault current but its magnitude as well. An increase in angular velocity has also a negative effect on the static and dynamic stability of PS. The paper presents a calculation of the setting and selectivity of selected turbogenerator protections.

Słowa kluczowe

EN

power plants; power systems; turbogenerators; failure conditions; failure elimination; protecting system

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Elektryka / Politechnika Opolska
• Rocznik: 2005
• Tom: Vol. 299, z. 55
• Strony: 42--56
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Belán A.

• Faculty of Electrical Engineering and Information Technology Slovak University of Technology in Bratislava, Slovak Republic

autor

Eleschová Ž.

• Faculty of Electrical Engineering and Information Technology Slovak University of Technology in Bratislava, Slovak Republic

Bibliografia

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• [2] CHLADNY, V., HUDAK. D.: Electric Protections in Power Systems, Bratislava, ALFA, 1977.
• [3] HALUZiK, E.: Electric Protections and Automatics in Power Systems, Brno, FE VUT 1986.
• [4] HORA, O. et al.: Control and Exciting Systems of Synchronous Machines, Praha, SNTL 1985.
• [5] JANiĆEK, F., KARAFFA, M.: Electric Protections and Automatics m Power System, Bratislava, EF SVST 1993.
• [6] PNE 38 4065: Operation, Design and Test of Electric Protections and Automatics.
• [7] STN 38 1009: Measurement, Control, Protections, Automatic and Communication Devices in Power Plants and Electricity Distribution.
• [8] STN 33 3051: Protection of electric machine and distribution devices.
• [9] CHLADNY, V.: Digital Measurement Method of Local Frequency in Power System. Proceeding of International Science Conference Elektroenergetika 1997, FEI VSB-TU Ostrava, 1997.
• [10] TROJANEK, Z., HAJEK, J., KVASNICA, P.: Transient Phenomena in Power System, SNTL, Praha 1987.
• [11] Rotating Machinery Protection Subcommittee: Sequential Tripping of Steam Turbine Generators, IEEE Transactions on Power Delivery, Vol. 14, No. 1, January 1999.
• [12] 0peration instruction No. 332-1/1, Arrangement in PS SR during Emergency Changes of Frequency and Voltage, Slovenske elektrarne, a.s. Bratislava, I 999-09-01.
• [13] Appendix of Orders for Steam Turbines Skoda Operatfon during Emergency Operation States and Vacuum Degradation, Skoda-Turbiny, Plzen, s. r. o., 1996.
• [14] JANiĆEK, F., CHLADNY, V., BELAN, A., ELESCHOV A, Z.: Digital Protections of Electric Machines, Kosice, FEl TU 2000.
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• [17] RUSEK, S.: Reliability of Power Systems, Monograph, VSB TU Ostrava 2001, ISBN 80-7078-847-X.
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