Е-Публикации
Технически университет - София

Abstract: The paper deals with the evaluation of the main parameters of reliability of contacts of devices with voltage up to 1000 V, operated in industrial electrical networks. The purpose of the work is to study the reliability parameters of contacts using the method of processing data on failures of devices with the analysis of physical processes occurring in the contact connections. To increase the accuracy of determining the intensity of failures introduced coefficients that take into account the influence of the main factors affecting the apparatuses. The study of the contact life of apparatuses was performed by analytical and graphical-analytical methods. To increase the reliability of the apparatuses parameters estimation it is necessary to use the graphical-analytical method taking into account correction coefficients. The value of the number of switching cycles of the device, after which the occurrence of failure is most likely, depends on its loading factor. For the studied devices after the expiration of 1/4 of switching resource the probability of failure-free operation becomes lower than the permissible value. The obtained results are recommended to be taken into account when scheduling preventive maintenance in the electrical networks of the shop-floor power supply.

References

1. E. I. Gracheva, O. V. Naumov, A. V. Beloglazov, A. N. Gorlov and M. A. Mikhaylov, "Modeling the Reliability Characteristics of Contact Devices of Low-Voltage Grid, " 2020 Ural Smart Energy Conference (USEC), Ekaterinburg, Russia, 2020, pp. 84-87, doi: 10. 1109/USEC50097. 2020. 9281197.
2. W. Zhang, L. Qin, Y. Zhou, C. Yi and S. Li, "Reliability Assessment of Medium and Low Voltage Distribution Networks Considering Distributed Energy Sources, " 2023 3rd International Conference on Energy Engineering and Power Systems (EEPS), Dali, China, 2023, pp. 271-275, doi: 10. 1109/EEPS58791. 2023. 10257168.
3. N. Zhu, G. Zhai and Z. Guo, "Research on Contact Reliability Design of Electrical Connector Contact, " 2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE), Zhangjiajie, China, 2019, pp. 155-160, doi: 10. 1109/QR2MSE46217. 2019. 9021171.
4. Y. Lozanov, "Assessment of the Technical Condition of Electric Contact Joints Using Thermography, " 2021 17th Conference on Electrical Machines, Drives and Power Systems (ELMA), Sofia, Bulgaria, 2021, pp. 1-4, doi: 10. 1109/ELMA52514. 2021. 9503060.
5. L. Hui, Z. Chen, F. Guo and G. Sun, "Modeling of the Friction Force in Sliding Electrical Contact with Mining Rules, " 2018 IEEE Holm Conference on Electrical Contacts, Albuquerque, NM, USA, 2018, pp. 61-65, doi: 10. 1109/HOLM. 2018. 8611778.
6. V. Romanov, A. Kazantsev and A. Batishchev, "Reducing Transient Resistance in Contact Connections of Electrical Installations in Oil Industry, " 2022 International Ural Conference on Electrical Power Engineering (UralCon), Magnitogorsk, Russian Federation, 2022, pp. 75-79, doi: 10. 1109/UralCon54942. 2022. 9906745.
7. Derevyankin P. G., Frolov V. Ya., Gorchakov S. L. Analysis of erosion processes of electrical contacts manufactured by plasma spraying technology // IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus). St. Petersburg and Moscow, Russia, 2020. P. 622-625. DOI: https: //doi. org/10. 1109/EIConRus49466. 2020. 9039012.
8. K. Li et al., "Electrical Performance Degradation Model and Residual Electrical Life Prediction for AC Contactor, " in IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 10, no. 3, pp. 400-417, March 2020, doi: 10. 1109/TCPMT. 2020. 2966516.
9. Andrusca M., Adam M., Burlica R., Munteanu A. [et al. ]. Considerations regarding the influence of contact resistance on the contacts of low voltage electrical equipment // International Conference and Exposition on Electrical and Power Engineering (EPE). Iasi, Romania, 2016. P. 123-128. DOI: https: //doi. org/10. 1109/ICEPE. 2016. 7781317.
10. Calin M. D., Helerea E. Aspects regarding testing of electromagnetic contactors sensitivity to voltage dips // International Symposium on Fundamentals of Electrical Engineering (ISFEE). Bucharest, Romania, 2020. P. 1-6. DOI: https: //doi. org/10. 1109/ISFEE51261. 2020. 9756156.
11. D. Shin, J. W. McBride, I. O. Golosnoy, "Arc Modeling to Predict Arc Extinction in Low-Voltage Switching Devices, " 2018 IEEE Holm Conference on Electrical Contacts, Albuquerque, NM, USA, 2018, pp. 222-228, doi: 10. 1109/HOLM. 2018. 8611712.
12. T. I. Petrov, V. Yu. Kornilov & A. R. Safin (2020). Changing the design of a synchronous motor after testing. E3S Web of Conferences. 220. 01030. 10. 1051/e3sconf/202022001030.
13. Z. M. Gizatullin, R. M. Gizatullin, M. G. Nuriev Methodology and Models for Physical Simulation of Electromagnetic Interference on the Example of the Interference-Resistance Analysis of Vehicle Electronic Devices // Journal of Communications Technology and Electronics.-2021.-Vol. 66.-No 6.-P. 722-726. DOI 10. 1134/S1064226921060103.
14. C. M. Gheorghita, M. Adam, M. Andrusca, A. Munteanu, A. Dragomir, "About contact resistance of the electrical equipment, " International Conference on Modern Power Systems (MPS), Cluj-Napoca, Romania, 2017, pp. 1-4, DOI: https: //doi. org/10. 1109/MPS. 2017. 7974439.
15. M. D. Calin, E. Helerea, "Aspects Regarding Testing of Electromagnetic Contactors Sensitivity to Voltage Dips, " International Symposium on Fundamentals of Electrical Engineering (ISFEE), Bucharest, Romania, 2020, pp. 1-6, DOI: https: //doi. org/10. 1109/ISFEE51261. 2020. 9756156.
16. W. Qiao and R. Wang, "Optimization Strategy for Condition-Based Maintenance of Aging Equipment Considering Service Life Retirement, " 2024 IEEE 7th Information Technology, Networking, Electronic and Automation Control Conference (ITNEC), Chongqing, China, 2024, pp. 1236-1245, doi: 10. 1109/ITNEC60942. 2024. 10733215.
17. C. R. Franco, F. Romanos and A. Novoa, "Electrical Distribution System Optimization Using Reliability Analysis, " 2024 IEEE IAS Petroleum and Chemical Industry Technical Conference (PCIC), Orlando, FL, USA, 2024, pp. 1-8, doi: 10. 1109/PCIC47799. 2024. 10832191.
18. S. Chen, H. Li, C. Chen, H. Li, J. Qiu and M. Shao, "Research on key Technologies of Power Supply Reliability Improvement in new Distribution Network, " 2024 9th Asia Conference on Power and Electrical Engineering (ACPEE), Shanghai, China, 2024, pp. 157-161, doi: 10. 1109/ACPEE60788. 2024. 10532226.
19. M. Fang, R. Huang, T. Lv, C. Liu, X. Ding and P. Wang, "Research on state assessment method of key equipment in distribution network, " 2023 8th Asia Conference on Power and Electrical Engineering (ACPEE), Tianjin, China, 2023, pp. 2614-2618, doi: 10. 1109/ACPEE56931. 2023. 10135928.
20. R. M. Petrova and E. Gracheva, "Comparison Of Methods Of Calculation Of The Electrical System Of In-Plant Power Supply, " 2023 5th International Conference on Control Systems, Mathematical Modeling, Automation and Energy Efficiency (SUMMA), Lipetsk, Russian Federation, 2023, pp. 1056-1061, doi: 10. 1109/SUMMA60232. 2023. 10349401.

Issue