T/CES 067-2021 Active Group standards

T/CES 067-2021 Magnetization critical current uniformity testing method for high-temperature superconducting tape using magnetic circuit method

Publish Date: 2021-09-28 Implement Date: 2021-09-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CES 067-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Power transmission and transformation equipment

ICS Name: Other equipment related to the transmission and distribution networks

Publish Date: 2021-09-28

Implement Date: 2021-09-30

Scope

Scope: This document describes the detailed steps and data processing methods of the magnetic circuit method for testing the uniformity of the magnetization critical current of high-temperature superconducting strips. This document is applicable to testing the uniformity of the magnetization critical current of Bi-2223 high-temperature superconducting strips and REBCO high-temperature superconducting strips (coated conductors) with a superconducting critical temperature above the liquid nitrogen temperature range. In theory, the measurement range is not limited by the width, thickness, packaging form, or base strip material of the strips. This document is not applicable to measuring the uniformity of the magnetization critical current of high-temperature superconducting cables. Main technical content: High-temperature superconducting strips represented by bismuth strontium calcium copper oxide (BSCCO) and yttrium barium copper oxide (YBCO) have entered the stage of large-scale production, with the length of a single strip reaching hundreds of meters or even thousands of meters. Due to the intrinsic ceramic characteristics of high-temperature superconducting materials and complex production processes, local defects are inevitable in the production and use process, which may become concentrated heat sources during the operation of superconducting devices and cause the collapse of the entire device. Therefore, it is very necessary to test the uniformity of the critical current of high-temperature superconducting strips. There are two methods for testing the uniformity of the critical current of high-temperature superconducting strips: contact method and non-contact method. Among them, the contact method measures the transmission critical current of high-temperature superconducting strips, mainly using the traditional four-lead method combined with continuous transmission devices; the non-contact method measures the magnetization critical current of high-temperature sup