Abstract

It gives the analyse of offered metodics of detinite profitable power оf the transformer stations (TS) and the colculation formuls received in building standarts and rules (B.S.K 2.04.17-98). Тhe offered new metodics.

Highlights

  • An important condition for the rational construction of the power supply system of cities is the correct choice of the power of transformer stations (TP), since the cost of the low voltage network and the transformer substations themselves depends on this

  • Another group of formulas proceeds from the method for determining the rational number of transformer substations when calculating the network based on the load current density of the emergency mode, presented in the form of a cubic equation for the specific linear length of the network, and currently the formula is used in design organizations, which V.A

  • This formula cannot be used to determine ST, since it is derived from the condition for choosing the cross-section of wires and cables by economic current density (F4), and is intended for single-storey buildings with low load density, but it is known that there are many publications and it has been proven that the calculation of the city power grid by the economic load density gives overestimated results and is not used in low-voltage networks

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Summary

Introduction

An important condition for the rational construction of the power supply system of cities is the correct choice of the power of transformer stations (TP), since the cost of the low voltage network and the transformer substations themselves depends on this. In the work of P.F. Gogichaishvili the formula for the optimal power of the network transformer substation is derived for the case of determining the wire cross-sections of the urban network of 0.38 kV by the economic current density.

Results
Conclusion

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