Petar Petrov, Georgi Velev, Krasimir Ivanov. Approach for preliminary determination of the type and number of vertical rods in grounding installations

Geoteh. meh. 2020, 155, 38-43

https://doi.org/10.1051/e3sconf/202016800013

 

 APPROACH FOR PRELIMINARY DETERMINATION OF THE TYPE AND NUMBER OF VERTICAL RODS IN GROUNDING INSTALLATIONS

1Petar Petrov, 1Georgi Velev, 1Krasimir Ivanov

1Technical University of Gabrovo

Language: English

Abstract. The paper inhere describes a new practical approach for fast preliminary onsite estimation of the number and the kind of vertical grounding rods as essential components of all grounding systems in electrical power facilities, networks and installations in industry, communal services, mining enterprises, etc.

REFERENCES

1. Ordinance No. 4 from 22 December 2010 for the Lightning Protection of Buildings, External Facilities and Open Spaces, SG, Issue 6 (Bulgarian standard) (2010)

2. Ordinance No 3 from 9 June 2004 for the Design of Electrical Systems and Power Lines (Bulgarian standard) (2004)

3. IEEE Std 80-2000, IEEE Guide for Safety in AC Substation Grounding, IEEE-SA Standards Board (2000)

4. IEEE Std 81-1983, IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a ground system, American National Standards Institute (1984)

5. S. Stefanov, T. Hristova, L. Atanasov, Potential of an electric field at an arbitrary point in earth, created by different polarity linear and linear and point current sources, Annual of the University of Mining and Geology St. Ivan Rilski, 52, Part III, Sofia, Bulgaria, 29-132, ISSN 1312-1820 (2009)

6. G. Anev, I. Danev, Electrcial Safety in the Open Mines and Industry, PH "Nakra", Radnevo (1996)

7. G. Venkov. P. Petrov, Technical Safety, PH "Gabrovo Print" (2002)

8. Y. L. Chow, M. M. A. Salama, A Simplified Method for Calculating the Substation Grounding Resistance, IEEE Transactions in Power Delivery, 9, No. 2, 736-742 (1994). https://doi.org/10.1109/61.296251