Superconducting cable vibration and temperature measurement system and method adaptive to multiple vibration working conditions

Abstract

The invention discloses a superconducting cable vibration measurement and temperature measurement system and method adaptive to multiple vibration working conditions. The system comprises a four-core armored optical cable, a temperature measurement instrument and a vibration measurement instrument; the four-core armored optical cable is arranged in the cable pipeline heat insulation layer along the length direction of the superconducting cable; in the four-core armored optical cable, a first core optical fiber is a single-mode optical fiber which is connected with a vibration meter and is used as a distributed vibration monitoring sensor and a vibration signal transmission medium; in the four-core armored optical cable, a second core optical fiber is a multimode optical fiber which is connected with a thermodetector and is used as a distributed temperature monitoring sensor and a temperature signal transmission medium; the other two cores are standby; the system further comprises an external optical cable arranged outside the cable conduit along the length direction of the superconducting cable and used for monitoring the temperature of the superconducting cable conduit. The system is simple and compact in structure, and monitors the vibration state of the surrounding space when monitoring the operation state of the superconducting cable. The four-core armored optical cable obtains information of measured changes along the distribution space and time of the optical cable, a traditional single-point measurement mode is broken through, and on-line monitoring of the temperature and vibration of the whole cable line is achieved.

Description

technical field [0001] The invention relates to the technical field of superconducting cable testing, and more particularly relates to a superconducting cable vibration and temperature measuring system and method adapted to multiple vibration working conditions. Background technique [0002] The superconducting cable system is mainly composed of three parts: superconducting cable body, terminal and refrigeration system. The superconducting cable body is the core part of the system, and the terminal is responsible for the connection and transition. The refrigeration system provides the necessary operating environment for the superconducting cable body to ensure the safe and reliable operation of the superconducting cable system. In order to meet the performance requirements of the superconducting cable system, it is very necessary to test the mechanical, electrical and thermal properties of the body, terminal and refrigeration system. The online monitoring system should be a...

AI Technical Summary

Problems solved by technology

[0008] To sum up, the operating environment of superconducting cables has strict requirements, and it must be kept in a low-temperature environment of liquid nitrogen. Excessive external forces, such as pipeline collapse, may damage the superconducting armor layer and cause the entire cable to quench. Threats to the stable operation of the entire cable

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