EXPERIMENTAL-COMPUTATIONAL DETERMINATION OF THE ELECTROMAGNETIC ENVIRONMENT OF 110/35/10 KV SUBSTATION "PARKOVAYA"

Authors

R.B. Tentiev Kyrgyz State Technical University named after I. Razzakov
A.K. Asanov Kyrgyz State Technical University named after I. Razzakov
N.K. Jusupbekova Kyrgyz State Technical University named after I. Razzakov

Keywords:

grounding device, electrical resistivity of the soil, spreading resistance of the grounding device, impulse resistance, impulse coefficient, secondary circuits, short circuit, lightning protection.

Abstract

The article presents an experimental and computational assessment of the electromagnetic environment of the 110 kV substation "Parkovaya," located in the southern outskirts of Bishkek. Based on measured data, calculations and modeling of electromagnetic compatibility parameters of the main equipment with secondary switching systems were performed. Measurements of soil resistivity and the grounding device's resistance to current dispersion were conducted, and based on these measurements, the hazards of potential differences on secondary equipment during short circuits and lightning discharges were determined. The average number of lightning strikes on the facility's territory was calculated. An analysis and assessment of the condition of the grounding device, cross-sections, and corrosion status of existing grounding elements, as well as the placement of secondary circuits, were carried out. An analysis of the lightning protection system in terms of its impact on microprocessor equipment and secondary equipment was performed. The evaluation of the calculation results was compared to the requirements of normative and technical documentation.

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