Study on Heat-vibration Joint Detection Technology of UHV Gas Insulated Line

LI Hongtao; GAO Shan; YANG Jinggang; ZHAO Ke; MA Jingtan; ZHUANG Tianxin

doi:10.13296/j.1001-1609.hva.2026.01.023

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Study on Heat-vibration Joint Detection Technology of UHV Gas Insulated Line

Research & Analysis | 更新时间：2026-04-13

- Study on Heat-vibration Joint Detection Technology of UHV Gas Insulated Line
- High Voltage Apparatus Vol. 62, Issue 1, Pages: 181-189(2026)
- 作者机构：
  
  国网江苏省电力有限公司电力科学研究院，南京　211103
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.01.023
  CLC：
- Received：20 July 2025，
  
  Revised：2025-09-25，
  
  Published：16 January 2026
- 稿件说明：
移动端阅览
LI Hongtao, GAO Shan, YANG Jinggang, et al. Study on Heat-vibration Joint Detection Technology of UHV Gas Insulated Line[J]. High Voltage Apparatus, 2026, 62(1): 181-189.
DOI：

LI Hongtao, GAO Shan, YANG Jinggang, et al. Study on Heat-vibration Joint Detection Technology of UHV Gas Insulated Line[J]. High Voltage Apparatus, 2026, 62(1): 181-189. DOI： 10.13296/j.1001-1609.hva.2026.01.023.

摘要

针对特高压气体绝缘输电线路（gas insulated transmission line，GIL）运行中可能存在过热和机械缺陷隐患，提出了基于红外热成像和激光多普勒测振（laser Doppler vibration，LDV）的GIL非接触式发热/振动联合检测技术，自行设计了1 550 nm全光纤非接触测振光路，采用NVidia Xavier边缘计算模块实现红外热成像镜头组件调用、FPGA振动信号解调及温度—振动检测信息提取。所研制装置的测温精度小于±1℃，振动灵敏度优于1×10

-7

g、频响范围0.5 Hz～20 kHz，最大测试距离20 m，可实现GIL发热—振动联合检测。通过GIL原型缺陷试验验证了发热—振动联合检测方法对于设备内部接触缺陷检测的有效性，所研制的联合检测系统通过移动小车集成并成功运用于苏通管廊GIL双回路1 960个测点的测试，实现了无接触非侵入式检测，为GIL状态检测提供了新的手段。

Abstract

In view of the hidden dangers of overheating and mechanical defects in the operation of UHV gas insulated transmission line (GIL)

a GIL non-contact heating/vibration combined detection technology based on infrared thermal imaging and laser Doppler vibration measurement (LDV) is proposed

and a 1550 nm all-fiber non-contact vibration measurement optical path is designed by ourselves. NVidiaXavier edge computing module is used to realize infrared thermal imaging lens component call

FPGA vibration signal demodulation and temperature-vibration detection information extraction. The temperature measurement accuracy of the developed device is less than±1℃

the vibration sensitivity is better than 1×10

-7

the frequency response range is 0.5 Hz-20 kHz

and the maximum test distance is 20 m

which can realize the combined detection of GIL heat and vibration. Through the defect test of GIL prototype

the effectiveness of the heat-vibration joint detection method for the detection of internal contact defects of equipment is verified. The developed joint detection system is integrated by mobile trolley and successfully applied to the test of 1960 measuring points of GIL double loop in Sutong pipe gallery

which realizes contactless and non-invasive detection

and provides a new means for GIL status detection.

关键词

Keywords

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