RELIABILITY ANALYSIS OF THERMAL POWER GENERATING UNITS BASED ON WORKING HOURS
Keywords:
Repair Hours, Failure Rate, Exponential Model, Weibull Model, Reliability, Working Hours.Abstract
For any system reliability calculation, estimation plays a vital role and hence the analysis is to be diverted to calculate reliabilities of the units. To do this, we need to analyze failure rates or inter-failure time intervals or duration of the failure free operation of the units. This data is usually termed as Working Hours (successive failures). Working Hours implies that the gap between failure to failure which is directly linked with the reliability of the system. Hence in this paper, first we fit and test the suitability of the data using Exponential and Weibull distribution through chi-square Goodness of Fit (GoF) test. In the later part, reliabilities of different units are calculated using the same distributions. Conclusions are drawn based on the results obtained.
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References
Adhikary D.D., Bose, G.K., Chattopadhyay, S.D., Bose, D. and Mitrad, S.
(2012). RAM investigation of coal-fired thermal power plants: A case study,
The International Journal of Industrial Engineering Computations, Volume 3,
p. 423-434.
Fernando Jesus Guevara Carazas and Gilberto Francisco Martha de Souza
(2009), Availability Analysis of Gas Turbines Used in Power Plants, Int. J. of
Thermodynamics, Vol. 12 (No. 1), p. 28-37.
Freeman J. M. (1996). Analysing equipment failure rates, International Journal
of Quality & Reliability Management, Vol. 13(4), p. 39- 49.
Hungund CPS and Shrikant Patil (2013). Analysis of Production Downtimes
in Thermal Power Plant using Exponential Failure Model – A Case Study,
Bulletin for Pure and Applied Sciences, International Journal for Statistics and
Mathematics, Volume 32E, Issue (1) 2013, p. 113-120.
Kohichi Nakamura (1981). Reliability analysis of thermal power units based
on the annual operating results Published online, Electrical Engineering in
Japan, Volume 101(4), p. 78-87.
Krishna Reddy, B. (2008). Modeling the causes of Production downtimes: An
empirical study of a Thermal Power Generating Unit, The ICFAI Journal of
Operations Management, The Icfai University Press, Hyderabad May 2008,
pp. 33-40.
Nair.P. and Vasakarla Jayavani (2006). Manual on Best Practices in Indian
Thermal Power Generating Units, The IUP Journal of Infrastructure, The Icfai
University Press, December 2006, Hyderabad.
Romeu, J.L. (2004). The Chi-Square: A Large Sample Goodness of Fit Test,
RAC START, Volume 10 (4). Publication of Reliability Analysis Center.
Romeu, J.L. (2003). Empirical Assessment of Weibull Distribution, RAC
START, Volume 10 (4), Publication of Reliability Analysis Center.