Calculation Methodology Determining Reliability of the Thermal Power Station Electrical Facilities

Abstract:

It is noticed that introduction of frequency convertors has an adverse effect on the reliability indexes of the critical equipment of the thermal power station. The paper considers the method for calculation reliability based on the logical-and-probabilistic method with the following expert estimation of the entity technical state. Examples of the developed structural models of the power station’s reliability and its separate units as fault trees are provided. Based on the results of expert evaluation of the equipment fault occurrence intervals before and after introduction of the frequency convertors, average times to failure have been calculated. The paper also gives recommendations for providing reliability of the essential auxiliaries’ electric drives at the introduction of the frequency convertors.

• Periodical: Applied Mechanics and Materials (Volume 698)
• Pages: 796-802
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.698.796
• Online since: December 2014
• Authors: Sergey A. Evdokimov, Olga I. Karandaeva, Yulia N. Kondrashova*
• Keywords: Application, Calculation, Essential Auxiliaries, Method, Reliability, Thermal Power Station, Variable Frequency Drive

References

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[7] А.S. Karandaev, R.R. Khramshin, Т.R. Khramshin, V.R. Khramshin, A.R. Gubaydullin, Ways of Increasing Stability of the Variable Frequency Electric Drives at the Electric Supply Distortions, Russian Internet Journal of Industrial Engineering, No. 1 (2013).

DOI: 10.3103/s1068371215040045