Modeling phase-to-ground faults in 6kW grids in open pit mining

MATLAB Simulink-based modeling of phase-to-ground faults, common in power grids with insulated (or earthed via high-ohm resistor) generator neutral, has been performed. The model power grid contained: a substation with 35/6.3 kW transformer and switchgear; a power line composed of an overhead line branch and an inserted cable connected via a switching station; and the current-using equipment represented by power shovel ESH-10/70. The MATLAB Simulink-modeled blocks of these elements allow modeling phase-to-ground faultsfor various (possible) configurations of a power grid. The oscillograms of transient phenomena and the effective values of currents of phase-to-ground faults are obtained for the elements of the power grid in case of faults at the substation and in the shovel cable. The principles and provisions of the models are reported. The implemented modeling can provide parameters of phase-to-ground fault currents for validation of the selected ground fault protection and the protection operation setting for power grids in open pit mining.

Keywords: modeling, power grids, insulated neutral, ground fault, MATLAB Simulink, transformer, resistor, current-using equipment.
For citation:

Lyakhomskiy A. V., Gerasimov A. I., Perfil’eva E. N. Modeling phase-to-ground faults in 6kW grids in open pit mining. MIAB. Mining Inf. Anal. Bull. 2021;(2):164-178. [In Russ]. DOI: 10.25018/0236-1493-2021-2-0-164-178.

Acknowledgements:
Issue number: 2
Year: 2021
Page number: 164-178
ISBN: 0236-1493
UDK: 621.316.11:622.33
DOI: 10.25018/0236-1493-2021-2-0-164-178
Article receipt date: 29.09.2020
Date of review receipt: 05.11.2020
Date of the editorial board′s decision on the article′s publishing: 10.01.2021
About authors:

A.V. Lyakhomskiy1, Dr. Sci. (Eng.), Professor, Head of Chair,
A.I. Gerasimov1, Cand. Sci. (Eng.), Assistant Professor,
E.N. Perfil’eva1, Assistant Professor,
1 National University of Science and Technology «MISiS», 119049, Moscow, Russia.

 

For contacts:

A.I. Gerasimov, e-mail: mggu.eegp@mail.ru.

Bibliography:

1. Federal'nye normy i pravila v oblasti promyshlennoy bezopasnosti «Pravila bezopasnosti pri vedenii gornykh rabot i pererabotke tverdykh poleznykh iskopaemykh» [Federal Norms and Rules for Industry Safety: Safety Regulations for Solid Mineral Mining and Processing]. Series 03. Issue 78. Moscow, ZAO NTTS PB, 2015, 276 p.

2. Shuin V.A., Gandzhaev D. I., Sarbeeva O. A., Shagurina U. S. Utilization of electrical values of transient phenomena in ground fault protection in 6–10 kW power grids. Vestnik Ivanovskogo gosudarstvennogo energeticheskogo universiteta. 2011, no 1, pp. 32—41. [In Russ].

3. Vladimirov L. V., Vyrva A. A., Oshchepkov V.A., Popov A. P., Surikov V. I. Modeling phase-to-ground fault in electrical distribution system with insulated neutral. Omskiy nauchnyy vestnik. 2012, no 1 (107), pp. 197—201. [In Russ].

4. Shuin V.A., Vorob'eva E. A., Dobryagina O. A., Shadrikova T. Yu. Principles of adaptive current protection from ground faults in 6–10 kW unbalanced cable networks. Вестник Vestnik Ivanovskogo gosudarstvennogo energeticheskogo universiteta. 2018, no 3, pp. 28—37. [In Russ].

5. STO DIVG-059-2017. Releynaya zashchita raspredelitel'nykh setey 6—10 kV. Raschet ustavok. Metodicheskie ukazaniya [Standards of Organizations STO DIVG-059-2017. Relay protection of 6 kW distribution systems. Calculation of settings. Guidelines], Saint-Petersburg, Izd-vo SPb NTTS Mekhanotronika, 2017, 68 p.

6. STO 18-2013. Rukovodyashchie ukazaniya po vyboru rezhima zazemleniya neytrali v elektricheskikh setyakh napryazheniem 6—35 kV [Standards of Organizations STO 18-2013. Guidance on neutral grounding in 6–35 kW power grids ], Saint-Petersburg, Izd-vo OAO «LENENERGO», 2013, 77 p.

7. Gukovskiy Yu., Sychev Yu., Pelenev D. The automatic correction of selective action of relay protection system against single phase earth faults in electrical networks of mining enterprises. International Journal of Applied Engineering Research. 2017. No 5. Рp. 833—838.

8. Ivanitskiy V.A., Tyulenev M. E. Analytical model of phase-to-ground faults in power supply grids. Intellektual'nye sistemy v proizvodstve. 2013, no 2 (22), pp. 185—189. [In Russ].

9. Dauda A., Japhet D., Edwin M., Mandu A. Folarin. Modelling and Simulation of Faults in Distribution Network System Using MATLAB Simulink. IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE). 2018. Vol. 13. Issue 3. Ver. 1. Pp. 43—51.

10. Drandic A., Marusic A., Drandic M., Havska J. Power system neutral point grounding. Jornal of Energy. 2017. Vol. 66. No 1-4. Pp. 52—68.

11. Perelmuter V. Electrotechnical Systems. Simulation with Simulink and SimPowerSystems. CRS Press, 2017. 450 p.

12. Dzhendubaev A.-Z. R., Aliev I. I. MATLAB, Simulink i SimPowerSystems v elektroenergetike: uchebnoe posobie [MATLAB, Simulink and SimPowerSystems in electrical energy industry: Educational aid], Cherkessk, BITS SevKavGGTA, 2014, 136 p.

13. Ravlic S., Marusic A. Simulation models for various neutral earthing. Methods in medium voltage systems. Procedia Engineering. 2015. Vol. 100. Pp. 1182—1191.

14. Ded A. V. Parameter determination in Simulink-model of three-phase supply transformer for studies into long-term unbalanced conditions. Omskiy nauchnyy vestnik. 2017, no 3, pp. 68—74. [In Russ].

15. Yagup V. G. Parameter determination for models of transformers. Svitlotekhnika ta elektroenergetika. 2014, no 2, pp. 52—63.

16. Gerasimov A. I., Zavarykin B. S. Elektrosnabzhenie kar'erov: uchebnoe posobie [Power supply of open pit mines: Educational aid], Krasnoyarsk, SFU, 2013, 184 p.

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