Application of Evaporative Cooling Technology in Transformer for Mine Tunnels

Author:

Shi Hualin,Xiong Bin,Liu Xiangrong,Huang Kangjie,Cai Xinhua,Gu Guobiao

Abstract

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.

Publisher

MDPI AG

Subject

Process Chemistry and Technology,Chemical Engineering (miscellaneous),Bioengineering

Reference13 articles.

1. Cooling Characteristics and Performance of the 330 MW Evaporative Cooling Turbo Generator;Jianhong;Trans. China Electrotech. Soc.,2013

2. The Research of the Evaporative Cooling Electromagnetic Iron-separator;Hui;Proc. CSEE,2006

3. Application of evaporative cooling technology in high power rectifier devices;Luan;Power Syst. Technol.,2009

4. Simulation and experimental study on the evaporative cooling system of HVDC valve unit;Wei;Trans. China Electrotech. Soc.,2017

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