Name
Kudoyarov Ruslan Ildarovich
Scholastic degree
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Academic rank
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Honorary rank
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Organization, job position
State Petroleum Technological University
Web site url
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Articles count: 1
The importance of improving the quality of
electrical energy was growing along with the
development and wide implementation in the
production of valve converters and various highperformance
processing units, such as arc furnace,
welding machines etc. The main causes of potential
and existing non-compliances of non-sinusoidal
voltages can be joining sources and non-sinusoidal
reactive power sources, including resonant filters,
to existing electric grids without taking into
account their possible impact on the distortion of
the sinusoidal voltage. Transformers are affected
by the non-sinusoidal shapes of the curves of
current and voltage. The effect is characterized by
the fact that the harmonics of current and voltage
increase transformer temperature, compared to
purely sinusoidal current and voltage. The aim of
this work is to study the influence of higher
harmonics on power loss in power transformers.
Experimental study of operation of power
transformers was carried out on the developed
model of the transformer substation. The
experiments were conducted with different
capacities of transformers that have variables in the
range of 250-1000 kVA. By using programmable
voltage source a sinusoidal voltage is formed
containing the third, fifth, sixth, seventh, ninth and
twelfth harmonics. The level of harmonics is
changed in the range of 2-12 %