Guangdong Power Grid Co., Ltd.

Electric Power Research Institute of Guangdong Power Grid Co., Ltd.

China Electric Power Research Institute of Guangdong Power Grid Co., Ltd.

Xiaoqing Xiao

Li Li

Bing Zhao

Meng Song

Yunsong Luo

Lianhong Zhong

Xinhui Duan

Yajun Xia

Wenfeng Cheng

Zhengjun Shi

Chao Sheng

Youxin Lin

Jian Zhang

Yongfa Zhao

Nannan Hu

A skin layer of a superconducting tape has a woven mesh structure and is disposed on a surface of a superconducting tape. The skin layer of a superconducting tape solves the problem where a vapor layer generated when a superconductor is in a normal resistive state greatly reduces the efficiency of a heat exchange between the superconductor and liquid nitrogen. Further provided are the superconducting tape and a superconducting coil.

Skin layer of superconducting tape, superconducting tape, and superconducting coil

Provided is a superconducting coil having a spiral structure for a current limiter. The coil includes: a first superconducting tape, a second superconducting tape, and an insulating isolation layer, where the first superconducting tape and the second superconducting tape have spiral structures, an end of the first superconducting tape at a spiral center is connected to an end of the second superconducting tape at the spiral center, the instating isolation laser is filled between the first superconducting tape and the second superconducting tape, and a spacing between the first superconducting tape and the second superconducting tape gradually increases from the spiral center to an outer spiral periphery.

Superconducting coil having spiral structure for current limiter

Provided are a method and apparatus for calculating fault resistance and a current-limiting current of a superconducting fault current limiter. The method includes: calculating a first short-circuit fault current I(t) of a power grid short-circuit fault transient circuit; calling an external characteristic model U(I,t), and calculating resistance R(t) of a superconducting fault current limiter under the first short-circuit fault current I(t); adding the resistance R(t) of the superconducting fault current limiter into the power grid short-circuit fault transient circuit, and calculating a second short-circuit fault current I(t), where m=n+1; and determining whether an error between the second short-circuit fault current I(t) and the first short-circuit fault current I(t) is smaller than a preset threshold value, if yes, determining the fault resistance and the current-limiting current of the superconducting fault current limiter to be R(t) and I(t) respectively; otherwise, I(t)=I(t), returning for iteration.

Annular bearer network and service bearing implementation method therefor

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Guangdong, China

Xiaoqing Xiao