Cyclic operation of large-capacity steam turbines

• Autorzy: Gampe U. , Altmann H. , Buchheim G. , Barth G.
• Języki publikacji: EN

Abstrakty

EN

Today, Cyclic operation is a typical operational mode for large-capacity steam turbines, which results from the overall situation in the electricity market. Additional life consumption due to creep-fatigue interaction, wear and tear and corrosion in specific components are principle effects of cyclic operation. So far cyclic operation has not been practised in the 500 MW units of V-EG, but preventive analyses of additional life consumption of critical components help to identify weak points and to avoid forced outages. The authors report about their life-consumption analyses of the IP rotor a 500 MW steam turbine. The presentation addresses collection of operating data and their generalisation in pattern cycles, calculation of thermal and mechanical boundary conditions, FEM modelling of the rotor, analysis of the stresses and their ranges and finally the life assessment. Although the analysis of the specific turbine showed that no adverse effect with regard to forced life consumption is expected for cyclic operation, the authors draw precise conclusions with regard to enhanced creep monitoring.

Słowa kluczowe

EN

steam turbine; Cyclic operation; life assessment

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN
• Czasopismo: Transactions of the Institute of Fluid-Flow Machinery
• Rocznik: 2003
• Tom: nr 113
• Strony: 147--156
• Opis fizyczny: Bibliogr. 4 poz., tab., wykr.

Twórcy

autor

Gampe U.

• Dresden University of Technology (TUD), Institute of Power Machinery and Machinery Laboratory, Chair of Thermal Power Machinery and Plants, 01062 Dresden, Germany

autor

Altmann H.

• Vattenfal Europe Generation AG & Co. KG (V-EG), Chausseesfrasse 23, 1,0115 Berlin, Germany

autor

Buchheim G.

• Dresden University of Technology (TUD), lnstitute of Power Machinery a.nd Machinery Laboratory, Chair of Thermal Power Machinery a,rld Plants, 07062 Dresden, Germany

autor

Barth G.

• Vattenfa]] Europe Ceneration AG k Co. KG (V-EG), Kraftwerk Jaenschwalde, PF 20 01 40, 03182 Peitz, Germany

Bibliografia

• 1. Tillmann, H.-B., Hodurek, C,: Use of electrical energy of wind power plants under consderation of scheduled supply and necessary balancing of alternating feed in, Seminar "Windenergienutzung" des VDI Arbeitskreises Energetechnik, Dresden, Oktober 2001, (in German).
• 2. Neuber H,: Theory of stress concentration for shear-strained prismatical bodies with arbitrary nonlinear stress-strain law, J. Appl. Mech., Trans. ASME 28(1961), 444-450,
• 3. Melzer, B.: Method for Determinati on of the Creep Rupture Strenght Components on the Basis of On-Site Material Inspections, BRD-Patent. DD 283 059 A (Aktenzeichen GO1N/316 3 89 6), 1988, (in German)
• 4. Melzer, B.; Seliger, P.; Illmann,W.: Enhanced life assessment of creep,a posed pipe bends on the basis of component specific characteritics. VGKraftwerkstechnik 73 (1993), 4, (in German).