Open AccessAnalytical studies of transformers operating modes in supply and distribution electric network of a field substation
Author(s) -
Т. В. Табачникова,
А. В. Махт,
Erlan Nurbosynov
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/643/1/012090
Subject(s) - transformer , distribution transformer , electrical engineering , electric power , voltage , engineering , electric power distribution , switched mode power supply , electric potential energy , electrical network , electronic engineering , power (physics) , physics , quantum mechanics
We obtained new analytical dependencies for investigation of operating modes of power transformers, supply and distribution electric network of a field substation in order to take into account losses of power and electrical energy in all network elements. We substantiated the relevance of this article and the considered tasks, which depend on the object of study. It has been established that one auxiliary transformer and from eight to ten outgoing lines are connected to one bus section of a power transformer of a field substation. We developed mathematical models of electrical complexes of a field substation with individual transformers of outgoing power lines, as well as with individual, node and centralized compensating units. We obtained new analytical dependencies, taking into account total losses of power and electrical energy in power transformers of field substation and distribution electrical network as a function of supply voltage. The well-known method for calculating the energy parameters of electrical units of field substation and auxiliary equipment has been improved by adding new analytical dependencies of total power losses in power transformers of field substation and distribution network as a function of 35 kV supply voltage. The scientific novelty of this work is obtaining new analytical relationships between total power loss in power transformers of the field substation and distribution network in a function of supply voltage, which take into account external and internal disturbances in the network. This allowed us to improve the well-known method for calculation the energy parameters of electrical installations of a field substation taking into account parameters of individual, nodal and centralized compensating installations.