Lightning Impulse Protection for Grid-connected Solid-state Transformers

被引：0
|
作者：
Xu, Chunmeng [1 ]
Wei, Jia [1 ]
Zheng, Liran [1 ]
Han, Xiangyu [1 ]
Saeedifard, Maryam [1 ]
Kandula, Rajendra Prasad [1 ]
Kandasamy, Karthik [1 ]
Divan, Deepak [1 ]
Graber, Lukas [1 ]
机构：
[1] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA
来源：
2020 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2020年
关键词：
Basic insulation level (BIL); insulation coordination; metal-oxide varistor (MOV); lightning; power electronic transformer (PET); solid state transformer (SST); surge protection; IMPLEMENTATION;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A lightning protection scheme is designed and experimentally verified for protecting a 7.2 kV soft-switching solid-state transformer from lightning-induced overvoltage surges. The general design procedures of the lightning protection scheme as well as device selection guidelines are discussed in detail. A prototype has been constructed based on economical, off-the-shelf surge protective devices with unique choices of gapped metal-oxide varistors and air-core inductors. Lightning impulse tests have been performed to evaluate the lightning impulse protective level of the protection scheme, which also experimentally confirm a satisfactory protective ratio between the lightning protection scheme and the solid-state transformer according to the criteria of IEEE Std. C62.22. Working as an independent surge attenuator, the lightning protection scheme is able to protect various kinds of grid-connected converters and facilitate their field deployment in distribution systems.
引用
收藏
页码：6057 / 6064
页数：8
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