摘要
在大电流强度下,超高压、特高压直流套管内部的温升问题十分突出。套管散热能力不足会出现温度过高导致的绝缘击穿等问题。本文针对高压直流套管高效散热问题,针对几种散热技术做了详细的分析对比,综合考虑高压套管的运行条件,对重力热管驱动高压直流套管散热方式进行了详细的分析研究。结果表明,当高压直流套管内加入R113作为制冷剂后,管壁散热情况得到改善,最高温度为80℃,完全满足高压直流套管长期稳定工作需求。本文的研究结果有助于为高压直流套管新型、低成本、高可靠冷却技术的开发提供一定借鉴和思路。
Due to the high current intensity,the internal temperature rise of ultra/high voltage direct current(DC)bushing is crucial for successful operation.The insufficient heat dissipation capability of bushing leads to high temperature which can result in the insulation breakdown.In this paper,heat dissipation technologies are analyzed and compared.Considering the operating conditions of the high voltage DC bushing,the high voltage DC bushing cooling method referring to the gravity heat pipe technology is simulated.The results show that,with R113as the refrigerant,the heat dissipation of the DC bushing is well improved,and the maximum temperature is80℃,which can meet the DC bushing long-term working requirement very well.The results suggest that gravity heat pipe technology can be an effective way to solve the high heat dissipation problem for high voltage DC bushing.
作者
陈涛
曹菁
侯予
CHEN Tao;CAO Jing;HOU Yu(East China Power Transmission and Transformation Engineering Company, Shanghai, 201803;Xi’an Jiaotong University, Xi’an, Shaanxi 710049)
出处
《制冷技术》
2017年第5期53-58,共6页
Chinese Journal of Refrigeration Technology
基金
中央高校基本科研业务费专项资金(No.xjj2017108)
关键词
高压直流套管
高效散热技术
热管技术
High Voltage DC Bushing
Efficient Heat Dissipation Technology
Heat Pipe Technology
