Back to Search Start Over

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

Authors :
Edoardo Alessio Piana
Nicolaas Bernardus Roozen
Source :
Applied Sciences, Vol 10, Iss 2, p 637 (2020)
Publication Year :
2020
Publisher :
MDPI AG, 2020.

Abstract

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.

Details

Language :
English
ISSN :
20763417
Volume :
10
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Applied Sciences
Publication Type :
Academic Journal
Accession number :
edsdoj.fc6dc0b8d2984a65b03530b21fe900c8
Document Type :
article
Full Text :
https://doi.org/10.3390/app10020637