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Concept of advanced lifetime monitoring system for steam turbines
 
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The Szewalski Institute of Fluid-Flow Machinery Polish Academy of Sciences
CORRESPONDING AUTHOR
Mariusz Banaszkiewicz   

The Szewalski Institute of Fluid-Flow Machinery Polish Academy of Sciences
Submission date: 2020-10-03
Final revision date: 2020-12-14
Acceptance date: 2021-01-19
Online publication date: 2021-01-25
Publication date: 2021-01-25
 
Diagnostyka 2021;22(1):23–29
 
KEYWORDS
TOPICS
ABSTRACT
The increasing share of renewables in electricity production adversly affects the operation of thermal plants, including steam turbine units. Intermittency of renewable sources results in high variability of steam turbine operating conditions, which together with the inherent scatter of turbine operating parameters significantly complicates their lifetime assessment. The paper presents a concept of lifetime monitoring system in scope of creep-fatigue damage. The system is based on online and offline calculations, performs online analysis of measurement data and takes into account the results of material tests. Functionality of the system main modules was described and mathematical models suitable for online calculations were presented. A general concept of hardware configuration for the system was proposed as well.
 
REFERENCES (35)
1.
ASME Boiler and Pressure Vessel Code, Section III, Division 1: Sub-section NH, Class 1 Components in Elevated Temperature Service, ASME, New York, 2001.
 
2.
Badur J, Bryk M. Krajowe nadkrytyczne bloki weglowe: praca podstawowa czy elastyczna?. Nowa Energia. 2018; 62: 38-40.
 
3.
Badur J, Bryk M. Accelerated start-up of the steam turbine by means of controlled cooling steam injection. Energy 2019; 173: 1242-1255. https://doi.org/10.1016/j.ener....
 
4.
Banaszkiewicz M, Multilevel approach to lifetime assessment of steam turbines. Int J Fatigue. 2015; 73: 39-47. https://doi.org/10.1016/j.ijfa....
 
5.
Banaszkiewicz M, On-line monitoring and control of thermal stresses in steam turbine rotors. Applied Thermal Engineering 2016; 94: 763-776. https://doi.org/10.1016/j.appl....
 
6.
Banaszkiewicz M. Analysis of rotating components based on a characteristic strain model of creep. Journal of Engineering Materials and technology – Transactions of the ASME. 2016; 138: 031004-1-11. https://doi.org/10.1115/1.4032....
 
7.
Banaszkiewicz M, On-line determination of transient thermal stresses in critical steam turbine components using a two-step algorithm. Journal of Thermal Stresses 2017; 40: 690-703. https://doi.org/10.1080/014957....
 
8.
Banaszkiewicz M. The low-cycle fatigue life assessment method for online monitoring of steam turbine rotors. International Journal of Fatigue. 2018; 113: 311-323. https://doi.org/10.1016/j.ijfa....
 
9.
Banaszkiewicz M. Numerical modelling of cyclic creep-fatigue damage development for lifetime assessment of steam turbine components. In: Madejski P, ed. Thermal Power Plants – New Trends and Recent Developments. IntechOpen; 2018. https://doi.org/10.5772/intech....
 
10.
Banaszkiewicz M, Badur J. Practical methods for online calculations of thermoelastic stresses in steam turbine components. In: Winczek J, ed. Selected Problems of Contemporary Thermomechanics. IntechOpen; 2018. https://doi.org/10.5772/intech....
 
11.
Banaszkiewicz M. Numerical investigation of crack initiation in the impulse steam turbine rotors subjected to thermo-mechanical fatigue. Applied Thermal Engineering. 2018; 138: 761-773. https://doi.org/10.1016/j.appl....
 
12.
Banaszkiewicz M. Creep life sssessment method for online monitoring of steam turbine rotors. Materials at High Temperatures. 2019; 36: 354-367. https://doi.org/10.1080/096034....
 
13.
Bolton J. A ‘characteristic strain’ model for creep. Matls at High Temp. 2008; 25: 101-108. https://doi.org/10.3184/096034....
 
14.
Bolton J. Analysis of structures based on a characteristic-strain model of creep. Int Journ Press Vess Piping. 2008; 85: 108-116. https://doi.org/10.1016/j.ijpv....
 
15.
Chmielniak T, Kosman G. Thermal loads of steam turbines. 1st ed. Warsaw: WNT; 1990. Polish.
 
16.
Enerdata, Global Energy statistical yearbook 2020.
 
17.
Helbig K, Banaszkiewicz M, Mohr W. Advanced lifetime assessment and stress control of steam turbines, PowerGen Europe, Milan, 2016.
 
18.
Holdsworth SR. Creep-Fatigue Interaction in Power Plant Steels. Materials at High Temperatures. 2011; 28: 197-204. https://doi.org/10.3184/096034....
 
19.
Holdsworth SR. Creep-Fatigue Failure Diagnosis. Materials 2015; 8: 7757-7769. https://doi.org/10.3390/ma8115....
 
20.
IEA, World gross electricity production, by source, 2018, IEA, Paris. https://www.iea.org/data-and-s....
 
21.
Kraszewski B. A study of thermal effort during half-hour start-up and shutdown of a 400 MW steam power plant spherical Y-pipe. Case Studies in Thermal Engineering. 2020; 21, 100728. https://doi.org/10.1016/j.csit....
 
22.
Leyzerovich AS. Steam Turbines for Modern Fossil Fuel Power Plants, 1st ed. Lilburn: The Fairmont Press Inc.; 2008.
 
23.
Okrajni J, Wacławiak K. The impact of temperature oscillations and heat transfer conditions in thick-walled elbows and tubes on the local stress-strain behaviour during the fast start-up of power boilers. Engineering Transactions 2019; 67: 579-591. https://doi.org/10.24423/EngTr....
 
24.
Radin YA, Kontorovich TS, Golov PV. Monitoring the Thermal Stress State in Steam Turbines. Power Technol Eng. 2020; 53: 719-723. http://doi.org/10.1007/s10749-....
 
26.
RCC-MR. Design and Construction Rules for Mechanical Components of FBR Nuclear Islands. AFCEN, Paris, 1985.
 
27.
Rusin A, Nowak G, Lipka M. Practical Algorithms for Online Thermal Stress Calculations and Heating Process Control. Journal of Thermal Stresses. 2014; 37, 1286-1301. https://doi.org/10.1080/014957....
 
28.
Taler J, Dzierwa P, Jaremkiewicz M, Taler D, Kaczmarski K, Trojan M, Węglowski B, Sobota T. Thermal stress Monitoring in thick walled pressure components based on the solutions of the inverse heat conduction problems. Journal of Thermal Stresses. 2018; 41, 1501-1524. https://doi.org/10.1080/014957....
 
29.
Taler J, Dzierwa P, Jaremkiewicz M, Taler D, Kaczmarski K, Trojan M, Węglowski B, Sobota T. Monitoring of transient 3D temperature distribution and thermal stress in pressure elements based on the wall temperature measurement. Journal of Thermal Stresses. 2019; 42, 698-724. https://doi.org/10.1080/014957....
 
30.
TRD 301. Annex I – Design: Calculation for Cyclic Loading due to Pulsating Internal Pressure or Combined Changes of Internal Pressure and Temperature, Technical Rules for Steam Boilers. 1978.
 
31.
VGB PowerTech, Electricity Generation - Facts and Figures 2019/2020, August 2019 https://www.vgb.org/en/data_po....
 
32.
Viswanathan R. Damage Mechanisms and Life Assessment of High-Temperature Components. 2nd ed. Metals Park: ASM International; 1989.
 
33.
Vogt J, Schaaf T, Helbig K. Optimizing lifetime consumption and increasing flexibility using enhanced lifetime assessment methods with automated stress calculation from long-term operation data, ASME Turbo Expo. 2013. GT2013-95068.
 
34.
Wacławiak K, Okrajni J. Transient heat transfer as a leading factor in fatigue of thick-walled elements at power plants. Archives of Theremodynamics. 2019; 40: 43-55. 10.24425/ather.2019.129549.
 
35.
Webster GA, Ainsworth RA. High Temperature Component Life Assessment. 1st ed. London: Chapman & Hall; 1994.
 
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