超导限流变压器的研究进展

Research progress of superconducting fault current limiting transformer

随着输电容量和电压等级的不断提高,电网的短路电流水平也不断增加。与传统电力变压器相比,超导限流变压器具有体积小、重量轻,输电损耗低、效率高,能够限制故障电流;无火灾隐患和环境污染等优点。介绍了近十年来超导限流变压器的国内外研究进展,包括多台已经通过了相关的测试实验的原理样机。并指出了一些在研发超导限流变压器的过程中亟待解决的关键技术。

With the continuous improvement of transmission capacity and voltage level,the short-circuit current level of power grid is also increasing.Compared with the traditional power transformer,the superconducting fault current limiting transformer(SFCLT)has the following advantages:small volume,light weight,low transmission loss and high efficiency,to be able to limit fault current,as well as no fire hazard and environment-friendly.This paper introduced the research progress of superconducting current limiting transformer in domestic and abroad during the past decade,including several principle prototypes which had passed the relevant tests.Some key technologies which needed to be solved urgently in the process of developing superconducting fault current limiting transformer were pointed out.