Algorithms for estimating equivalent resistances of in-plant electrical networks

Author:

Abdullazyanov E. Yu.1,Gracheva E. I.1,Gorlov A. N.2,Shakurova Z. M.1,Tabachnikova T. V.3,Valtchev S.4

Affiliation:

1. Kazan State Power Engineering University

2. South-West State University

3. Almetyevsk State Oil Institute

4. New University of Lisbon

Abstract

THE PURPOSE. Investigation of the degree of influence of the characteristics of in- plant electrical networks on the reliability of the results in the algorithms for estimating equivalent resistances. METHODS. When solving this problem, a study of the radial power supply scheme of the tool shop section was carried out with the calculation and modeling of equivalent and reference values of the circuit resistances. Algorithms and methods for estimating the values of equivalent resistances have been developed, taking into account the main technical characteristics of in-plant networks.RESULTS. The data of calculations of the equivalent resistance values of the circuits with an assessment of the heating factor of the conductors and the resistance factor of the contact devices are analyzed. The proportions of the influence of the resistances of the contact equipment and lines, taking into account the number of electric power receivers connected to the power point, on the value of the equivalent resistances of the circuit are revealed. CONCLUSION. The article develops algorithms for estimating the values of equivalent resistances of in-plant power supply circuits. Nomograms are presented that take into account the number and length of the circuit lines with the allocation of the zone of accounting for the resistances of contact equipment in the equivalent resistances of the circuits. The obtained algorithms and results are recommended to be used to clarify the amount of power and electrical energy losses in the intra- factory networks, which will increase the reliability of calculations.

Publisher

Kazan State Power Engineering University

Subject

Pharmacology (medical),Complementary and alternative medicine,Pharmaceutical Science

Reference21 articles.

1. Grachieva EI, Naumov OV. Power losses and efficiency of functioning of equipment of shop networks. Monograph. Moscow: «Rusains», 201. 168 p.

2. Grachieva EI, Naumov OV, Gorlov AN, et al. Algorithms and probabilistic models of the parameters of the functioning of the intra-factory power supply. Energy problems. 2021;1:93- 104.

3. Grachieva EI, Shakurova ZM, Abdullazyanov RE. Comparative analysis of the most common deterministic methods for determining electricity losses in shop networks. Problems of power engineering. 2019;5:87-96

4. Grachieva EI, Gorlov AN, Shakurova ZM. Analysis and evaluation of energy savings in intra-plant power supply systems. Energy problems. 2020;2:65-74.

5. Grachieva EI, Gorlov AN, Shakurova ZM. Estimation of electric power losses in intra- factory electric networks. Bulletin of the PITTU named after Academician M. Osimi. 2019;4 (13):38-50

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