Determination of Elements Reliability for Power Plants Based on Internal Combustion Engines by Lowest Residual Entropy Method

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DOI https://doi.org/10.15407/pmach2023.01.039
Journal Journal of Mechanical Engineering – Problemy Mashynobuduvannia
Publisher Anatolii Pidhornyi Institute for Mechanical Engineering Problems
of National Academy of Science of Ukraine
ISSN  2709-2984 (Print), 2709-2992 (Online)
Issue Vol. 26, no. 1, 2023 (March)
Pages 39-45
Cited by J. of Mech. Eng., 2023, vol. 26, no. 1, pp. 39-45

 

Authors

Stefan V. Zaichenko, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” (37, Peremohy ave., Kyiv, 03056 Ukraine), zstefv@gmail.com, ORCID: 0000-0002-8446-5408

Kostiantyn I. Pochka, Kyiv National University of Construction and Architecture (31, Povitroflotskyi ave., Kyiv, 03037 Ukraine), shanovniy@ukr.net, ORCID: 0000-0002-0355-002X

Yurii O. Romasevych, National University of Life and Environmental Sciences of Ukraine (15, Heroiv Oborony str., Kyiv, 03041 Ukraine), romasevichyuriy@ukr.net, ORCID: 0000-0001-5069-5929

Vadym O. Shalenko, Kyiv National University of Construction and Architecture (31, Povitroflotskyi ave., Kyiv, 03037 Ukraine), vadshal@i.ua, ORCID: 0000-0002-6984-0302

Roman D. Kulish, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” (37, Peremohy ave., Kyiv, 03056 Ukraine), ORCID: https://orcid.org/0000-0003-0647-1578

Maksym M. Balaka, Kyiv National University of Construction and Architecture (31, Povitroflotskyi ave., Kyiv, 03037 Ukraine), balaka.mm@knuba.edu.ua, ORCID: 0000-0003-4142-9703

 

Abstract

The selection technique of diagnostic parameters for the creation of fault detection system of autonomous electric power sources based on gasoline and diesel engines is given in the paper. An analysis of the design features for autonomous electric power sources based on internal combustion engines, which are the most common on the Ukrainian market, was carried out. Thanks to this, a logical model of the research object, which establishes the relation between the main structural elements of the system and determines the possible states of the system, was developed. The effect of fault state initiation for each element on the other system elements was analyzed. An informative criterion – Shannon information entropy is proposed to determine the finite number of diagnostic parameters among the infinite number of possible combinations for physical parameters that characterize the system. The equal-probable cases of exit from operational state of each system elements are considered. The residual entropies of the system at the fault state for one of the autonomous power sources assembly are determined, having applied the concept of Shannon information entropy. The residual entropy value is the informative criterion. The application of this criterion allowed to determine the system elements that most effectively reduce the system uncertainty degree. Based on the residual entropy values, the system assemblies, the state of which should be primarily monitored by diagnostic system, are selected. The diagnostic parameters are determined for such elements, and the ways to obtain them are given

 

Keywords: diagnostic system, electric power source, internal combustion engine, generator

 

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References

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Received 10 January 2023

Published 30 March 2023