Next Article in Journal
Integration of Dimension Reduction and Uncertainty Quantification in Designing Stretchable Strain Gauge Sensor
Previous Article in Journal
Deep Learning for Black-Box Modeling of Audio Effects
Previous Article in Special Issue
Performance Evaluation of Active Noise Control for a Real Device Casing
Open AccessArticle

On the Control of Low-Frequency Audible Noise from Electrical Substations: A Case Study

1
Department of Mechanical and Industrial Engineering, University of Brescia, 25123 Brescia, Italy
2
Laboratory of Acoustics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, B-3001 Heverlee, Belgium
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(2), 637; https://doi.org/10.3390/app10020637
Received: 16 December 2019 / Revised: 4 January 2020 / Accepted: 13 January 2020 / Published: 16 January 2020
(This article belongs to the Special Issue Noise Barriers)
With the world facing the urgency of energy transition, the development of efficient and quiet electrical infrastructures is of topical importance in the construction of the environment of the future. The problem of noise from power distribution systems is often underestimated, although several works in the literature underline the effect of disturbance on the population, especially concerning the low frequency range. This paper overviews the issue of the low-frequency noise generated by electrical substations, from the experimental characterization of the source to the possible mitigation measures at the source, along the propagation path and at the receiver. Alongside the general presentation, a case study serves as a practical demonstration of the proposed methodological approach. It was found that in the investigated situation the main disturbance comes from the transformer at two low-frequency harmonics of twice the networking frequency. A traditional noise barrier is designed taking into account the strict size constraints imposed by technical compatibility with the electrical infrastructure, which limits its efficacy at low frequency. Noise masking with broadband signals can be a complementary solution to further reduce noise disturbance and contain it within prescribed limits. The evaluation of subjective response of the receivers to different mitigation solutions is made possible by the availability of the impulse response. View Full-Text
Keywords: noise barrier; power substation; transformer noise; low-frequency noise; noise masking noise barrier; power substation; transformer noise; low-frequency noise; noise masking
Show Figures

Figure 1

MDPI and ACS Style

Piana, E.A.; Roozen, N.B. On the Control of Low-Frequency Audible Noise from Electrical Substations: A Case Study. Appl. Sci. 2020, 10, 637.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop