Abstract
Electrical substation noise comprises noise from electrical transformers (magnetostrictive hum and cooling fan noise) as well as HVAC systems associated with buildings and enclosures. These noise sources are necessary to serve the public need for power distribution. Site sound emissions should have minimal acoustical impact on receptors and in most cases are required to comply with regulatory limits pertaining to noise. A few case studies are presented that address challenging noise control situations for electrical transformers and other electrical substation noise sources, including the acoustical consultant’s role in the project, identification of regulatory limits and project criteria, acoustical analysis, approach to noise control recommendations, and lessons learned.
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