Study on Verification for the Realizing Possibility of the Fault-Current-Limiting-Type HTS Cable Using Resistance Relation With Cable Former and Superconducting Wire

Abstract

In this study, we reduced the cable former (hereinafter, "copper wire") diameter to verify the possibility of realizing the fault-current-limiting-type superconducting cable while maintaining the current-limiting ratio and the cable stability. Current application properties in the parallel connection of the copper stranded wire were analyzed with the superconducting wire with a different degree of non-resistance. Items that were verified included the change in the total current (the limited fault current), the voltage characteristics, and the results of the thermal stability evaluation through a resistance analysis. The verification targets included the combination of the superconducting wire without a stabilization layer and the copper wire (0.75 SQ and 1 SQ), the combination of the superconducting wire with a stainless stabilization layer and the copper wire (0.75 SQ and 1 SQ), and the combination of the superconducting wire with a copper stabilization layer and the copper wire (0.75 SQ and 1 SQ). Result showed that with the increasing degree of the superconducting wire non-resistance and the decreasing copper wire diameter, the limiting performance of the total current improved, but thermal stability was not stabilized. In addition, the superconducting wire volume was shown to have affected thermal stability.

Time-Domain Protection of Superconducting Cables Based on Artificial Intelligence Classifiers

“…I N recent years, the deployment of multi-layer Superconducting Cables (SCs) with High Temperature Superconducting (HTS) tapes with inherent fault current limiting capability has been considered as a promising solution towards the modernization of power systems [1]- [3]. As opposed to conventional copper power cables, SCs are characterized by a plethora of technically-attractive features such as compact structure, higher current-carrying capability [4], lower losses, higher power transfer at lower operating voltages and over longer distances [5] and reduced environmental impact [6].…”

Design and Performance Tests of a Fault Current-Limiting-Type Tri-Axial HTS Cable Prototype

“…Chonbuk University and Yonsei University in South Korea have carried out relevant research on current limiting HTS cables, of which Chonbuk University has mainly studied the intrinsic characteristics of superconducting tape, and Korean University have mainly studied the impedance characteristics of systems [14]. The Yonsei University team aims to connect two 22.9 kV distribution substations with a current limiting HTS cable with a rated current of 1260 A and an expected fault current of 25 kA [15]. KERI from Korea is developing a 154 kV class fault current-limiting HTS cable, and an inductive type is proposed [16].…”

Simulation for the Fault Current Limiting Operation of REBCO CORC Superconducting Cables With Different Core Materials

“…This fault current limiting (FCL) feature of HTS cables possibly enables the development of much safer power transmission/distribution systems. Therefore, extensive research and development related to cable design have been done to test and improve the FCL capability of HTS cables[5,6,7,8,9,10,11]. Advanced Conductors Technologies in collaboration with the Center for Advanced Power Systems (CAPS) developed and tested FCL performance on two CORC ® cables, one has 8 layers of two 2G REBCO tapes wound on a copper core and the other has 6 layers of three REBCO tapes wound on a stainless steel core.…”