Ecological Systems and Devices Annotation << Back ACOUSTIC RESEARCH OF HIGH-VOLTAGE SUBSTATION AREA E.N. Sosnina, O.V. Masleeva, R.Sh. Bedretdinov, E.V. Kryukov, D.A. Gusev The article is devoted to acoustic research and assessment of operational personnel working conditions serving high-voltage substations. Two-transformer substations with 110–330 kV voltage and 10–1000 MVA capacity power transformers were analyzed. The noise calculation on the substation area was performed and the isolines were constructed in 5 dBA increments. Based on the substation area planning and personnel flow, the time spent of operational personnel in each noise zone was calculated, taking into account the speed of personnel flow and the time of electrical equipment inspection, and the values of energy equivalent sound level were determined. The performed research has shown that the calculated value of the energy equivalent sound level for a working shift at substations with a 110, 220 and 330 kV voltage does not exceed the permissible value, therefore special measures to reduce noise are not required. This research was funded by the Ministry of Science and Higher Education of the Russian Federation (state task No. FSWE-2022-0005). Keywords: noise, power transformers, energy equivalent sound level, aural effect. DOI: 10.25791/esip.3.2023.1356 Pp. 03-13.