基于NaErF4@NaYF4上转换材料的高灵敏度变电站设备温度监测

摘要/Abstract

摘要： 实时监测变电站设备的温度变化,预防故障,对保障电力供应至关重要。目前,变电站设备的温度监测主要依赖人工红外测温技术,存在操作依赖性强、易受干扰等问题,且难以检测设备内部故障。发光强度比(LIR)是一种不受光谱损失、环境等因素影响的稳定光学参数,适用于温度检测。稀土掺杂的上转换(UC)材料的多发射峰特性与LIR技术高度契合,展现出在高精度温度监测方面的潜力。本文提出了一种基于NaErF₄@NaYF₄核壳结构的UC材料和LIR技术的非接触式变电站设备温度监测方法。实验表明,该方法在25~225 ℃具有高准确性和灵敏度,灵敏度高达35×10^-3 ℃^-1,可有效监测设备内外的温度变化,为变电站设备的温度监测提供了新的技术方案。

关键词: 变电站, 温度监测, 上转换发光, 发光强度比, 核壳结构, NaErF₄@NaYF₄

Abstract: Real-time monitoring of temperature changes in substation equipment is crucial for preventing failures and ensuring a stable power supply. Currently, temperature monitoring of substation equipment primarily relies on manual infrared thermometry, which has limitations such as strong operational dependence, susceptibility to interference, and difficulty in detecting internal faults. The luminous intensity ratio (LIR) is a stable optical parameter unaffected by factors such as spectral loss and environmental influences, making it suitable for temperature detection. The multi-emission characteristics of rare-earth-doped upconversion (UC) materials are highly compatible with LIR technology, demonstrating their potential in high-precision temperature monitoring. Here we introduces a non-contact temperature monitoring method for substation equipment based on NaErF₄@NaYF₄ core-shell UC materials and LIR technique. Experiments show that the method has high accuracy and sensitivity within temperature range of 25 ℃ to 225 ℃, with a sensitivity as high as 35×10^-3 ℃^-1, effectively monitoring temperature changes both inside and outside the equipment. This provides a new technical solution for temperature monitoring of substation equipment.

Key words: substation, temperature monitoring, upconversion luminescence, luminescence intensity ratio, core-shell structure, NaErF₄@NaYF₄

中图分类号:

O734
TM63

杨帆, 张利, 李楚涵, 陈铭岳, 马致臻. 基于NaErF₄@NaYF₄上转换材料的高灵敏度变电站设备温度监测[J]. 人工晶体学报, 2024, 53(8): 1434-1442.

YANG Fan, ZHANG Li, LI Chuhan, CHEN Mingyue, MA Zhizhen. High Precision Temperature Monitoring of Substation Equipment Based on NaErF₄@NaYF₄ Upconversion Material[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(8): 1434-1442.

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基于NaErF₄@NaYF₄上转换材料的高灵敏度变电站设备温度监测

High Precision Temperature Monitoring of Substation Equipment Based on NaErF₄@NaYF₄ Upconversion Material

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