高温超导储能磁体MOV保护方法的研究  

Study on an Protection Method of HTS Magnet Using MOV

作　　者：魏斌[1] 丘明[1] 唐跃进[2] 诸嘉慧[1] 

机构地区：[1]中国电力科学研究院电工研究所,北京100192 [2]华中科技大学超导电力科学技术研究与发展中心,湖北武汉430074

出　　处：《稀有金属材料与工程》2008年第A04期91-95,共5页Rare Metal Materials and Engineering

摘　　要：超导磁储能系统(SMES)电感大,在与电力系统进行快速的能量交换时超导磁体两端将产生较大的感应电压,并受到内部饼间环流的影响,而磁体绝缘水平有限,其过电压保护一直是人们关注的热点。本文从电力系统对入网设备的要求出发,提出并联金属氧化锌阀片(MOV)的高温超导磁体保护方法,并与常规技术进行了比较,不同标准雷电波和周期振荡波冲击以及自放电条件下的仿真和试验。结果表明:该方法有效地限制磁体两端过电压,并且能作为超导磁体的泄能电阻,快速释放能量。The inductance of superconducting magnet is so large that the inductive overvoltages of the high-Tc superconducting （HTS） magnet is need to be limited when Superconducting Magnetic Energy Storage （SMES） system exchanges energy with power system. Besides, because of the circumfluence of windings and the level limit of magnet insulation, the inductive overvoltages protection is a focus for HTS magnet application. In this paper,taking into account of its application in power system, the author put forward an protection method of HTS magnet using MOV, analyzed and proved the method by experiments and simulink analysis. The results show that it can effectively prohibit the overvolatges during the discharge in the windings using the MOV as an external dump resistor, indicating the validity of the magnet protection.

关 键 词：高温超导磁体 MOV(Metal Oxide Varistor) 雷电波 振荡波 

分 类 号：TM26[一般工业技术—材料科学与工程]