Study on Loss and Temperature Increases in Hollow Oil-immersed Reactors

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Xiao, Shijie^1 ; Yu, Peixiang^1 ; Chen, Zhenxing^2 ; Zheng, Hai^1 ; Chen, Gang^1 ; Li, Shiqiang^2 ; Li, Hanping^2

State Grid Zhejiang Electric Power Corporation Company of China, Zhejiang Province, Hangzhou, China^1

State Grid Zhoushan Power Supply Company, Zhoushan, Zhejiang Province, China^2

关键词: Circulating current loss;    Distribution characteristics;    Finite element numerical simulation;    hollow resonant reactor;    Multi-physics couplings;    Temperature field distribution;    Temperature increase;    Temperature rise;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012025/pdf
DOI  :  10.1088/1757-899X/486/1/012025

来源: IOP

【 摘 要 】

Oil-immersed hollow reactors have been applied to high-voltage frequency-modulated resonant power supplies due to their favorable linearity and high insulation strength. A high-quality reactor is the key component of a high-voltage test system. The characteristics of loss and temperature-rise characteristics are the core factors affecting the quality factor of the reactor. In this paper, a finite-element numerical simulation model was established based on a large capacity series resonance test system for a 500-kV submarine cable in China. The eddy current loss, AC resistance loss, and circulating current loss of the oil-immersed air-core reactor were calculated. With these as a foundation, the flow and temperature field distribution characteristics were obtained for an oil-immersed hollow reactor through the coupling of magnetic heat and flow field. Finally, the temperature distribution characteristics of the reactor were compared with the dates obtained from the release testing, and the reliability of the calculation model was verified.