Experimental study of the evaporative cooling system in a low-noise power transformer

Niu, Wenhao; Li, Ning; Chen, Shuang; Tang, Sheng; Yongjia, Hu; Cai, Jun; Lu, Lei; Jin, Chengxiang; Zhang, Bai; Zhong, Haifeng; Zhang, Guoqiang; Xu, Zhengyang

doi:10.1109/ciced.2012.6508686

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…After introducing a new algorithm based on the reverse calculation method [17] or the corrections made of both ambient noise and sound wall reflections per the IEC (International Electrotechnical Commission) Standards [18], the accuracy of transformer noise measurements improves significantly. Moreover, from the manufacturer point of view, considering the low-frequency noise of electrical substation was always presented and noticed in daily lives of residents near the source [19], the structural optimization and low-or ultra-low-noise power transformers design by means of acoustic radiation model arouses designer's attention gradually [20], to meet the increasingly stringent environmental standards, the improved core assembling form [21], and even optimized cooling system arrangement form [22] are taken into account by manufacturers.…”

Section: Introductionmentioning

confidence: 99%

Power Transformer Spatial Acoustic Radiation Characteristics Analysis under Multiple Operating Conditions

Ying

Wang

et al. 2018

Energies

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Abstract:Spatial acoustic radiation characteristics analysis is the precondition of reducing the noise influence of outdoor power transformer while multi-physical field coupling method can be applied to quantify and reveal these acoustic characteristics of a running power transformer. In this study, based on the theoretical analysis about noise generation and dissemination process, an acoustic radiation model about oil-immersed power transformer was established and verified with field test data in time and frequency domain. Then, far-field analysis and directivity analysis were accomplished to characterize acoustic field of power transformer under multiple operating conditions. Finally, the acoustic radiation influence on potential surrounding buildings were analyzed and discussed. The visual results and conclusion provide acoustic guide for the optimal planning and design about both power substation and ambient buildings.

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Section: Introductionmentioning

confidence: 99%

Power Transformer Spatial Acoustic Radiation Characteristics Analysis under Multiple Operating Conditions

Ying

Wang

et al. 2018

Energies

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“…In the decades of research progress, the durability and aging resistance of fluorocarbon coolant have also been tested and a lot of engineering practice experience and technical reserves have been accumulated, which provides a solid foundation for the application of evaporative cooling technology in transformer. The evaporative cooling transformer has also been made a subject of preliminary application attempt in the early stage [8,9]. At present, the research and development of conventional evaporative cooling transformer is relatively backward because of the high cost of coolant.…”

Section: Introductionmentioning

confidence: 99%

Application of Evaporative Cooling Technology in Transformer for Mine Tunnels

Hualin

Xiong

Liu³

et al. 2021

Processes

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The traditional dry-type mine transformer has some disadvantages, such as incomplete fire prevention, large volume, high loss and not enough environmental protection. Based on evaporative cooling technology, this paper proposes a scheme of mine transformer using fluorocarbon as coolant which can truly realize the incombustible transformer scheme and meet the strict environmental requirements. The transformer adopts three-dimensional wound core structure to reduce the loss and improve the anti-short-circuit ability. The volume of transformer is greatly reduced due to the efficient heat dissipation ability of evaporative cooling technology. The scheme of plate fin heat exchanger is more suitable for the ventilation condition of the mine. The filling technology is used to reduce the amount of expensive coolant. Through the life cycle cost analysis, evaporative cooling transformer has better economic benefits than traditional mine transformer, but also has better safety benefits. A prototype is manufactured and tested, and the results show that the prototype meets the requirements of IEC standard temperature rise limit and achieves the expected requirements.

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Evaluation and different control methods of the transformer noise (Literature survey)

Boteva

Tsvetkov

Botev

2017

2017 15th International Conference on Electrical Machines, Drives and Power Systems (ELMA)

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Experimental study of the evaporative cooling system in a low-noise power transformer

Cited by 5 publications

References 2 publications

Power Transformer Spatial Acoustic Radiation Characteristics Analysis under Multiple Operating Conditions

Power Transformer Spatial Acoustic Radiation Characteristics Analysis under Multiple Operating Conditions

Application of Evaporative Cooling Technology in Transformer for Mine Tunnels

Evaluation and different control methods of the transformer noise (Literature survey)

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