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- W2184031010 abstract "Zone substations are located at various strategic locations throughout the electricity network in Australia. These substations typically include several significant noise sources, transformers being the most common “problem” source. Changing consumer usage and increasing load demand requires ongoing augmentation of substations to keep pace with the changing requirements. Increasing capacity combined with new electrical technology introduces potential new noise sources to be assessed and addressed. Recent projects have seen capacitor and load control frequency injection (LCFI) cells causing significant noise levels on and off site for substations. The cells are used by energy authorities to control the hours of operation of equipment to reduce peak electrical loads on the network for various devices such as domestic hot water systems. The LCFI cells turn equipment on and off by sending signals (pulses) through the electrical system. This paper discusses the noise and vibration levels generated by a newly installed LCFI cell at a zone substation. The 80kVA, 283Hz LCFI cell was located in a masonry control room, and generated noise levels of 94dB(A) within the frequency injection room. This resulted in unsuitably high noise levels for staff elsewhere in the building. Analysis of the situation indicated that the noise was primarily structure-borne, and that a combination of vibration and noise control treatments would be required to adequately attenuate the noise. The installed treatments achieved a significant noise reduction for the building occupants and the results of the noise and vibration control treatments are presented in this paper. The information gathered will assist in addressing noise from similar LCFI cells at other zone substations in the electricity network, to protect the health and amenity of substation staff and nearby residents." @default.
- W2184031010 created "2016-06-24" @default.
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- W2184031010 date "2009-01-01" @default.
- W2184031010 modified "2023-09-27" @default.
- W2184031010 title "Load control frequency injection cell structure-borne noise attenuation" @default.
- W2184031010 hasPublicationYear "2009" @default.
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