高温超导带材在工频交流下的载流能力判断方法

Method to judge current capacity of HTS tapes in 50Hz AC condition

高温超导带材在电力设备中的应用日趋增加,但对于带材在工频交流情况下载流能力的判断方法却很少。为此,提出了一种基于电压谐波畸变率的交流载流能力判断方法。分析了各种载流能力判断方法的优劣,并将电压谐波畸变率方法和双对数坐标方法做比较;通过交流载流实验验证新方法的可靠性。实验结果表明,基于电压谐波畸变率的判断方法与双对数坐标方法符合较好,能够为高温超导带材的交流载流能力判断提供一定的参考依据。

The development of HTS tapes in the grid is becoming,power balance is quite vital for economic benefits and quality of power supply of the grid.At present,it＇s difficult for traditional reactor to adjust reactive power smoothly.What＇s worse,little capacity,complex control and severe harmonics limit its application.In order to solve this problem,this paper studied a three-limb-core superconducting reactor.Based on research of theory,the design method was proposed.Through theoretical and optional design,a 35kV supeconducting reactor was designed.Results of simulations indicate that the superconducting reactor has a wide range of stepless reactive power capacity adjustment.This conceptual design will provide reference basis for developing superconducting reactor with high capacity in high voltage grid in the future.