Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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SIMULATION OF NON-SINUSOIDAL MODE OF ELECTRIC POWER SYSTEMS GIVEN THE HEAT OF CURRENT-CARRYING PARTS

Plankov A.A. 1 Osipov D.S. 1 Bugreeva A.E. 2 Dolgikh N.N. 1 Eremin E.N. 1
1 Omsk State Technical University
2 Omsk Branch of Open joint-stock company «Territorial Generation company № 11»
In article are considered a non-sinusoidal in electrical power systems taking into accounting of an additional heating of the current-carrying parts and the possible consequences of not accounting of heating of current-carrying parts. Thermal processes in transformers and cables are described. The influence of the actual temperature of the current-carrying parts on calculation of the non-sinusoidal mode and calculation of power losses is investigated. It is shown that the temperature dependence can influence the distribution of the higher harmonics generated by other sources. It is also shown that at calculation of losses and a choice of measures to reduce the losses not accounting of heating can bring to serious errors. It is proved that the accounting of heating makes it possible to refine the estimated reduction in losses more than 40%. The conclusion is drawn on expediency of the accounting of heating of current carrying parts at a choice of actions for decrease in losses and to improvement of indicators of quality of the electric power in networks of industrial type.