«Automation and Informatization of the fuel and energy complex»

Modeling of an electric motor digital protection against earth faults at the objects of the fuel and energy complex

UDC: 621.316
DOI: -

Authors:

¹ Tyumen Industrial University, Tyumen, Russia

Keywords: earth faults, digital protection algorithm, reliability, electric motor, selectivity of protection application, sensitivity of relay protection

Annotation:

The problem of trouble-free operation of basic electrical equipment at oil and gas fields largely depends on the correct implementation of protective devices. The authors of the article analyze the data obtained in the course of studying the digital twin relay protection of an electric motor in case of an earth fault in various neutral modes. The reactions of the proposed model in single-phase and two-phase earth faults are evaluated and the necessity of selective protection application is justified depending on the method of neutral grounding, which makes it possible to increase the sensitivity of relay protection in terms of uninterrupted operation of the electric motor. Based on the results obtained, a block diagram of the model was built and an algorithm for setting the parameters of a digital model for protecting an electric motor from ground faults was developed. The article is intended for engineers and technical workers involved in the design and operation of electrical installations.

Bibliography:

1. Chernykh I.V. Modelirovanie elektrotekhnicheskikh ustroystv v Matlab, SimPowerSystems i Simulink. – M.: DKM Press; SPb.: Piter, 2008. – 288 s.
2. Vlasova E.P., Kuzyakov O.N., Belokon' V.A. Tsifrovoy dvoynik zashchity elektrodvigateley v neftegazovoy otrasli // Avtomatizatsiya i informatizatsiya TEK. – 2024. – № 4(609). – S. 5–12.
3. Vlasova E.P. Releynaya zashchita elektroenergeticheskikh sistem: ucheb. posobie dlya studentov, obuchayushchikhsya po napravleniyu 140400 "Elektroenergetika i elektrotekhnika". – Tyumen': TyumGNGU, 2015. – 207 s.
4. Bulychev A.V. Vybor parametrov srabatyvaniya zashchit ot odnofaznykh zamykaniy na zemlyu v raspredelitel'nykh setyakh pri raznykh rezhimakh neytrali // Releynaya zashchita i avtomatizatsiya. – 2022. – № 1(46). – S. 36–45.
5. Korogodskiy V.I., Kuzhekov S.L., Paperno L.B. Releynaya zashchita elektrodvigateley napryazheniem vyshe 1 kV. – M.: Energoatomizdat, 1987. – 248 s.
6. Ryzhkova E.N. Razvitie teorii perekhodnykh protsessov pri zamykaniyakh na zemlyu, razrabotka metodov i sredstv povysheniya nadezhnosti raboty elektricheskikh setey s izolirovannoy i kompensirovannoy neytral'yu: avtoref. dis. … d-ra tekhn. nauk: 05.09.03. – M., 2009. – 37 s.
7. Obzor rezhimov zazemleniya neytrali v elektricheskikh setyakh 6-35 kV / V.A. Burchevskiy, L.V. Vladimirov, V.A. Oshchepkov, V.I. Surikov // Omskiy nauch. vestn. – 2009. – № 1(77). – S. 122–126.
8. STO 56947007-29.120.70.305-2020. Metodicheskie ukazaniya dlya vybora parametrov nastroyki i srabatyvaniya MP ustroystv RZA oborudovaniya 6-35 kV ob"ektov ENES. – Utv. i vved. v deystvie prikazom PAO "FSK EES" ot 15.05.2020 № 178. – M.: FSK EES, 2020. – 130 s.
9. Ryzhkova E.N., Fomin M.A., Zharmagambetova M.S. O kriteriyakh vybora rezhima rezistivnogo zazemleniya neytrali v setyakh 6 – 35 kV // Prom. energetika. – 2013. – № 11. – S. 23–30.
10. Nikonova A.Yu. Opredelenie toka odnofaznogo zamykaniya na zemlyu v seti s dvigatel'noy nagruzkoy // Fedorovskie chteniya – 2017: XLVII Mezhdunar. nauch.-prakt. konf. s elementami nauch. shk., M., 15–17 noyab. 2017 g. – M.: Izdat. dom MEI, 2017. – S. 233–238.
11. Kadomskaya K.P., Chelanazov A.A. Rezhimy zazemleniya neytrali setey 3-6-10-35 kV // Elektricheskie stantsii. – 2000. – № 10. – S. 67–68.
12. Belyaev A.V., Yurganov A.A. Elektrostantsii maloy energetiki. Releynaya zashchita i avtomatika. Chast' 1 // Bibliotechka elektrotekhnika. – 2023. – № 10-11(298-299). – S. 1–136.
13. Pravila ustroystva elektroustanovok: po sostoyaniyu na 1 maya 2005 g.: utv. prikazom M-va energetiki Ros. Federatsii ot 8 iyulya 2002 g. № 204, vved. v deystvie s 1 yanv. 2003 g. – 7-e izd., izm. i dop. – Novosibirsk: Sib. un-t, 2005. – 511 s.
14. Navolochnyy A.A. Zashchita elektricheskoy seti 6-10 kV ot odnofaznykh zamykaniy na zemlyu: dis. … kand. tekhn. nauk: 05.14.02. – Vologda, 2002. – 189 s.
15. Shalin A.I., Tselebrovskiy Yu.V., Shcheglov A.I. Zashchita ot zamykaniy na zemlyu setey 6–35 kV v usloviyakh Severa // Fundamental'nye i prikladnye problemy fiziki i energetiki: mezhvuzov. sb. nauch. tr. / M-vo obrazovaniya Rossiyskoy Federatsii, Yakutskiy gos. un-t im. M.K. Ammosova, Novosib. gos. tekhn. un-t. – Novosibirsk: Sibirskoe soglashenie, 2003. – S. 287–301.