Justification of the N eed for Locomotive Diagnostic Systems

In the world and domestic practices of technical maintenance and repair (TMR) of locomotives there exists a tendency for the expanded use of technical diagnostics systems, the transition to predictive repair to reduce the costs of their life cycle. Modern hardware and software tools make it possible to create automated technical diagnostics systems (ATDS) for all types of locomotive equipment but equipping service repair locomotive depots with them requires significant capital costs with an unacceptably long payback period. The objective of the work is to develop a method and a corresponding simulation modelling software program to determine technical and economic feasibility of using certain means of technical diagnostics.

Diagnostic systems reduce waiting time for repairs, the volume and cost of scheduled and unscheduled TMR, which makes it possible to reduce the operating fleet of locomotives.

In modern economic calculations, to assess the success of an investment project, the indicator «Net present value (NPV)» of the project is used. Based on this principle, in relation to ATDS, a method for determining feasibility of introducing various types of ATDS and the corresponding methodology and software made with the algorithmic language VBA (Visual BASIC for Applications) in the MS Excel environment has been developed.

The work carried out simulation modelling for Russian conditions of the payback of main types of diagnostic systems comprising on-board based microprocessor control systems, rheostat testing stations for diesel locomotives, diagnostics of traction motors, etc. The economic feasibility of introducing these systems has been proved. Also, economically inexpedient diagnostic systems have been identified, f o r example, automatic measurement of the profile of a wheel set tire.

1. Kiselev, V. I., Gapanovich, V. A., Lakin, I. K. [et al]. Operation and maintenance of rolling stock: Study guide [Ekspluatatsiya i tekhnicheskoe obsluzhivanie podvizhnogo sostava: Ucheb. posobie]. Moscow, IRIS Group publ., 2012, 576 p.

2. Wyman, O. Train Maintenance. The Railway Technical Website. [Electronic resource]: http://www.railway-technical.com/trains/train-maintenance/. Last accessed 21.12.2020.

3. Lakin, I. K. Monitoring of technical condition and operating modes of locomotives. Theory and practices [Monitoring tekhnicheskogo sostoyaniya i rezhimov ekspluatatsii lokomotivov. Teoriya i praktika]. Ed. by I. K. Lakin. Moscow, LLC «Locomotive Technologies», 2015, 212 p.

4. Abolmasov, A. A. Management of the technical state of traction rolling stock during maintenance. Ph.D. (Eng) thesis [Upravlenie tekhnicheskim sostoyaniem tyagovogo podvizhnogo sostova v usloviyakh servisnogo obsluzhivaniya. Dis… kand. tekh. nauk]. Moscow, MIIT publ., 2017, 180 p. [Electronic resource]: https://docplayer.ru/49152812-Abolmasov-aleksey-aleksandrovich-upravlenietehnicheskim-sostoyaniem-tyagovogo-podvizhnogosostava-v-usloviyah-servisnogo-obsluzhivaniya.html. Last accessed 21.12.2020.

5. Lakin, I. I. Monitoring of the technical condition of locomotives according to the data of onboard hardware and software complexes. Ph.D. (Eng) thesis [Monitoring tekhnicheskogo sostoyaniya lokomotivov po dannym bortovykh apparatno-programmnykh kompleksov. Dis... kand. tekh. nauk]. Moscow, MIIT publ., 2016, 211 p. [Electronic resource]: https://docplayer.ru/46381822-Lakin-igor-igorevich-monitoring-tehnicheskogosostoyaniya-lokomotivov-po-dannym-bortovyhapparatno-programmnyh-kompleksov.html. Last accessed 21.12.2020.

6. Pustovoy, I. V. Development of an informationdynamic model of service maintenance management. Ph.D. (Eng) thesis [Razrabotka informatsionno-dinamicheskoi modeli upravleniya servisnym tekhnicheskim obsluzhivaniem. Dis... kand. tekh. nauk]. Omsk, OmGUPS publ., 2019, 181 p. [Electronic resource]: http://www.dslib.net/organizaciaproizvodstva/razrabotka-informacionno-dinamicheskojmodeli-upravlenija-servisnym-tehnicheskim.html. Last accessed 21.12.2020.

7. Golovin, V. I., Nagovitsyn, V. S. ACS with safety function for electric locomotive 2ES6 [ASU s funktsiei bezopasnosti dlya elektrovoza 2ES6]. 2018, No. 4. [Electronic resource]: http://scbist.com/. Last accessed 21.12.2020.

8. Semchenko, V. V., Lakin, I. K., Chmilev, I. E. Operation and maintenance of electronic control systems for alternating current electric locomotives [Ekspluatatsiya i tekhnicheskoe obsluzhivanie elektronnykh sistem upravleniya elektrovozov peremennogo toka]. Krasnoyarsk, Publishing house of the road center for implementation of the Krasnoyarsk railway, 2010, 72 p.

9. Patent for invention dated 24.10.2013 No. 2569216. Method of management of maintenance and repair of railway transport and a system for its implementation. K. V. Lipa, V. I. Grinenko, S. L. Lyangasov, I. K. Lakin, A. A. Abolmasov and others. [Electronic resource]: https://patentinform.ru/inventions/reg-2569216.html. Last accessed 21.12.2020.

10. Patent for invention dated 21.07.2017 No. 2626168. Method for technical diagnostics of locomotive equipment and device for its implementation. K. V. Lipa, V. I. Grinenko, S. L. Lyangasov, I. K. Lakin, A. A. Abolmasov and others. [Electronic resource]: https://patentinform.ru/inventions/reg-2626168.html. Last accessed 21.12.2020.

11. An integrated system for ensuring operational reliability of technical means based on diagnostic methods for monitoring the technical condition and planning maintenance and repair of rolling stock. Report on implementation of research work on the topic: «Development of requirements for the system for ensuring operational reliability of rolling stock and methodological foundations for determining its technical condition». Omsk, NIITKD publ., 2011, 765 p. [Electronic resource]: https://refdb.ru/look/2818339-p2.html. Last accessed 21.12.2020.

12. A pilot project for maintenance and repair of diesel locomotives of TE10 type at Tynda depot of Far Eastern Railway. Research report. Omsk, NIITKD publ., 2012, 146 p.

13. The formula for calculating the NPV of an investment project. IFRS website. [Electronic resource]: http://msfo-dipifr.ru/formula-rascheta-npvinvestitsionnogo-proekta-eto-prosto/. Last accessed 21.12.2020.

14. Osetrova, I. S., Osipov, N. A. Microsoft Visual Basic for Application. St. Petersburg, NRU ITMO publ., 2013, 120 p.

15. Venttsel, E. S. Probability theory: Textbook [Teoriya veroyatnosti: Uchebnik]. Moscow, Yustitsiya publ., 2018, 658 p.

16. Hedlund, E. H., Roddy, N. E., Gibson, D. R., Bliley, R. G., Pander, J. E., Puri, A., O’Camb, T. E., Lovelace, J. H., Loncher, S., Pierro, M. J. Apparatus and Method for Performance and Fault Analysis. US patent WO 01/3145. General Electric Company, 2001, 58 p. [Electronic resource]: https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2001031450. Last accessed 21.12.2020.

17. Steuger, M. Velaro – customer oriented further development of a high-speed train. [Electronic resource]: https://assets.new.siemens.com/siemens/assets/api/uuid:76bd8e38-7ea4-43ad-b7d4-4d7ca9be50a9/fachartikel_zev-ail_siemens_velaro_en.pdf. Last accessed 21.12.2020.