ENSURING ELECTRICAL SAFETY IN NETWORKS WITH RESISTIVE NEUTRAL GROUNDING

Authors

  • F.M. Raximov

Keywords: electrical safety, switchgear, low resistance resistive grounding, relay protection, line, current, insulation

Abstract

This article focuses on the important role of neutral resistor grounding in ensuring the safety of personnel and equipment in the energy sector. The considers the problem of compliance with uniform safety standards with the choice of grounding parameters of resistors, connecting them to protection devices and monitoring their condition.

References

1. The state all-Union standard 12.1.038 - 82. Electrical safety. The maximum permissible values of touch voltages and currents.

2. Verification of earthing global systems. L.Fickert, E.Schmautzer, C. Raunig, M.J.Lindinger. // Proceedings on 22nd International Conference on Electricity Distribution CIRED 2013. – Stockholm: 10 - 13 June 2013. - Pap. 0035.

3. Calculation of potential on grounding devices of substations in urban cable networks during single-phase ground faults. / M.S.Artemyev, A.S.Brilinsky, O.I.Grunina, G.A.Evdokunin . // Energy expert. 2015. №1, -P. 26-32.

4. The state all-Union standard R 50571-4-44-2011. Security requirements. Protection against voltage deviations and electromagnetic interference.

5. European Standard EN 50522 - 2011. Earthing of power installations exceeding 1 kV a.c.

6. Mayorov A.V., Chelaznov A.A. Transient processes during switching in a 20 kV network // ELECTRIC ENERGY. Transmission and distribution. 2016. № 3. - P. 60-65.

7. Weinstein R.A., Kolomiets N.V., Shestakova V.V. Neutral grounding modes in electrical systems. Tomsk: TPU Publishing House, 2006. –Р. 119.