摘要
35kV高温超导可控电抗器工作于70K液氮温区,通过控制超导线圈的工作状态来实现电抗的调节。线圈工作时,电流引线的焦耳热以及传导热是引线漏热的主要来源;当超导线圈开路时,线圈及电流引线则要承受高达十几千伏的感生电压,因此,电流引线的漏热优化以及电气绝缘水平是设计的重点。文中结合电流引线运行工况,设计了35kV超导可控电抗器电流引线,仿真结果表明,该设计漏热量低且温度分布均匀。此外,针对线圈开路时引线的高压情况确立了APG注射环氧绝缘的方案,有效的保证了绝缘水平。
The operating temperature of 35 kV high temperature superconducting controllable reactor is designed as 70 K. The working state of the superconducting coils determines the difference of the reactance value. The joule heat and conductive heat of the current lead are the main source of heat leakage when the superconducting coil is working. While the induced voltage of the coils and current lead may be as much as ten thousands volts when the superconducting coil opens. Thus,the optimization calculation of the heat leakage and the insulation level is the key point of the current lead design. This paper established the structure of the current lead and the FEM analysis indicates that the temperature distribution was homogeneous and the heat leakage was very low. The APG injection epoxy was used as the insulation,which could ensure the insulation level.
出处
《低温与超导》
CAS
北大核心
2014年第12期36-40,共5页
Cryogenics and Superconductivity
关键词
超导可控电抗器
电流引线
漏热
绝缘水平
Superconducting controllable reactor
Current lead
Heat leakage
Insulation level
作者简介
宋萌（1980-），男，博士，主要从事超导电力装置的电磁设计、分析与研制。
