Conductometric method of nondestructive testing of electric cable parameters

The relevance of the study lies in the need to ensure high reliability and troublefree operation of electric cables for power transmission lines and high-frequency information signals by non-destructive testing of their parameters.

Objective. To propose a new method for comprehensive diagnostics of electric cables, which allows increasing the efficiency of nondestructive testing of electric cable parameters by increasing the accuracy of testing and increasing the number of simultaneously monitored parameters.

Methods. Basic methods of theoretical electrical engineering were used for the theoretical justification of the new method, and digital systems for processing complex parameters of information signals were used in the development of circuit solutions.

Results. A conductometric method for non-destructive testing of parameters of the main cable elements has been developed and theoretically substantiated. For testing, two detachable cylindrical electrodes are applied to the examined section of a round metal core with dielectric insulation, which together with the examined part of the wire form a conductometric cell. It is shown that the electrical capacitance of this cell characterizes the electrical parameters of the wire, which are obtained from the measured information signal using the quadrature demodulation method. A structural block diagram for implementing this method has been developed. It is shown that the proposed technical solution allows recording an electric signal containing information on the current electric parameters of the controlled section of the electric cable, by which it is possible to assess the technical condition of its conductive elements and insulation. Based on this method, a method for operational tolerance control of the parameters of electric cables has been developed using the parameters of the reference section of the final length of the controlled cable without defects as a basic criterion.

Conclusion. The use of detachable metal cylinders as electrodes allows using these control methods both in cable manufacturing and on existing cable lines without violating their integrity in real time.

1. Badalyan N. P., Kolesnik G. P., Andrianov D. P., Chebryakova Yu. S. Cable and overhead power transmission lines. - Vladimir: VlSU, 2019. 259 p. (In Russ).

2. Dmitriev M. V. High-voltage cable lines. St. Petersburg: "Polytech-Press", 2021. 688 p. (In Russ).

3. Antony Ndolo, İsmail Hakkı Çavdar. Current state of communication systems based on electrical power transmission lines. Journal of Electrical Systems and Information Technology, 2021, 9. (In Russ). doi.org/10.1186/s43067-021-00028-9.

4. Bryakin I. V., Bochkarev I. V., Koryakin S. V. Adapter-transceiver for HF equipment of PLC technologies // Bulletin of SUSU. Series "Power Engineering", 2020, Vol. 20, No. 3. P. 97-107. (In Russ). doi: http://dx.doi.org/10.14529/power200310.

5. Grankina S.V., Giniatullin A.R., Kryuchkova N.A. Development of the world market of cable and wire products // Economy and Entrepreneurship, 2022, No. 9 (146). P. 178-182. (In Russ).

6. Badalyan N.P., Kolesnik G.P., Andrianov D.P., Chebryakova Yu.S. Cable and overhead power transmission lines. – Vladimir: Publishing house of VlSU, 2019. 260 p. (In Russ).

7. Pertsev Yu.A., Pisarevsky Yu.V. High Voltage Engineering. - Voronezh: VSTU, 2013. 107 p. (In Russ).

8. Bulanenkov V.A. Factors Affecting the Aging of Insulation in Electrical Devices // 2023. No. 29 (127). (In Russ).

9. Kholodny S.D., Serebryannikov S.V., Boev M.A. Testing and Diagnostic Methods in Electrical Insulation and Cable Engineering. Moscow: MPEI Publishing House, 2016. 232 p. (In Russ).

10. Bryakin I.V., Bochkarev I.V. Non-destructive Testing of Long Metal Objects. Lambert Academic Publishing, 2021. 177 p.

11. Panteleev A.S., Slovesny S.A. Non-destructive methods for assessing the insulation condition of high-voltage power cables // State and prospects for the development of electrical and thermal technology (Benardos readings), Proceedings of the International (XX All-Russian) scientific and technical conference. Vol. I. 2019, pp. 54-56. (In Russ).

12. Vinogradov A.A., Strekozova M.V. Diagnostics and control of power cables // Instrumentation and automation: Maintenance and repair, 2020, No. 3. pp. 26-30. (In Russ).

13. Saifutdinov Z.G., Bashmakov D.A., Ilyin V.I. System for monitoring and diagnostics of electrical cables // Devices. 2023. No. 9 (279). P. 46-50. (In Russ).

14. Kuzmin D.G., Kravchenko G.A., Lvova E.L., Makarov A.M., Stolyarov S.V. Method for monitoring the condition of a cable line and its main elements in operating mode // Bulletin of the Chuvash University. 2019. No. 3. P. 127-132. (In Russ).

15. Balobanov R.N., Bulatova V.M., Kryuchkov N.S., Shafikov I.I. Optimization of power cable line monitoring systems // News of higher educational institutions. PROBLEMS OF ENERGY. 2024. Vol.26. No. 4. Pp. 89-99. (In Russ). doi:10.30724/1998-9903-2024-26-4-89-99.

16. Banerjee S., Drapeau J. -F. Diagnostic Accuracy and Technical Considerations for MV Cable Field Partial Discharge Measurements, 2022 9th International Conference on Condition Monitoring and Diagnosis (CMD), Kitakyushu, Japan, 2022, pp. 24-33, doi: 10.23919/CMD54214.2022.9991454.

17. Lee H. M., Lee G. S., Kwon G. -Y., et al. Industrial Applications of Cable Diagnostics and Monitoring Cables via Time–Frequency Domain Reflectometry, in IEEE Sensors Journal, vol. 21, no. 2, pp. 1082-1091, 15 Jan.15, 2021, doi: 10.1109/JSEN.2020.2997696.

18. Bryakin I.V., Bochkarev I.V., Khramshin V.R. Development of a New Method for Flaw Detection of Electric Cables // Electrical Systems and Complexes. 2018. No. 4(41). P. 4-10. (In Russ). doi: 10.18503/2311-8318-2018-4(41)-4-10.

19. Bochkarev I.V., Bryakin I.V. Operational quality control of conductive cable elements // Electrical systems and complexes. 2020. No. 2 (47). P. 55-63. (In Russ). doi.org/10.18503/2311-8318-2020-2(47)-55-63.

20. Atrashchenko O.S., Skorikova E.M. Modern methods of cable insulation control // Energy and resource saving: industry and transport. 2017. No. 2 (19). P. 36-40. (In Russ).

21. Panteleev A.S., Slovesny S.A. Non-destructive methods for assessing the insulation condition of high-voltage power cables // In the collection: Status and prospects for the development of electrical and thermal technology (Benardos readings). Proceedings of the International (XX All-Russian) Scientific and Technical Conference. 2019. P. 54-56. (In Russ).

22. Auzanneau F. Wire troubleshooting and diagnosis: Review and perspectives. 2013Progress In Electromagnetics Research, 2013, B 49:253-279. DOI:10.2528/PIERB13020115.

23. Redko, V.V. Electrospark testing of cable insulation quality: monograph. Tomsk: TPU Publishing House, 2013. 928 p. (In Russ).

24. Vavilova G., Yurchenko V., Keyan L. Influence of the Insulation Defects Size on the Value of the Wire Capacitance. In: Minin, I.V., Uchaikin, S., Rogachev, A., Starý, O. (eds) Progress in Material Science and Engineering. Studies in Systems, Decision and Control, 2021, vol 351. Springer, Cham. https://doi.org/10.1007/978-3-030-68103-6_11.

25. Goldstein A.E., Vavilova G.V., Belyankov V.Yu. Electrocapacitive measuring transducer for technological control of linear capacitance of electric cable during production // Defectoscopy. 2015. No. 2. pp. 35-43. (In Russ).

26. Li C. et al. Experimental study of XLPE power cable insulation detection based on the electrical capacitance tomography sensor, 2021 IEEE 4th International Electrical and Energy Conference (CIEEC), Wuhan, China, 2021, pp. 1-4, doi: 10.1109/CIEEC50170.2021.9510556.

27. Batalović M., Zildžo H., Matoruga H., et al. Detection of Defect Presence inside the Insulation of Cable Accessories through Changes in Cable Capacitance, 2019 XXVII International Conference on Information, Communication and Automation Technologies (ICAT), Sarajevo, Bosnia and Herzegovina, 2019, pp. 1-4, doi: 10.1109/ICAT47117.2019.8938874.

28. Glushkov A. N., Litvinenko V. P., Litvinenko Yu. V. Digital algorithms for detection and demodulation of radio signals. Voronezh: Publishing house of VSTU, 2020. 153 p. (In Russ).

29. Bryakin I.V., Bochkarev I.V., Khramshin V.R., Gasiyarov V.R., Liubimov I.V. Power transformer condition monitoring based on evaluating oil proper-ties / /Machines. Basel: 2022. Vol. 10. No. 8. P. 630. (Scopus).

30. Bryakin I.V., Bochkarev I.V., Gunina M.G., Izzatov A.Zh. Development and study of the system for operational quality control of transformer oil // Problems of automation and control, 2023. No. 1 (46). P. 46-58 (In Russ).