Research on Enclosure Overheat Mechanism and Improvement Measures of 330 kV GIS

WANG Shengjie; MA Yongfu; MA Guoxiang; BAO Zhenghong; CHEN Yao; WU Duiping; WANG Lili

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Research on Enclosure Overheat Mechanism and Improvement Measures of 330 kV GIS

更新时间：2025-06-18

- Research on Enclosure Overheat Mechanism and Improvement Measures of 330 kV GIS
- High Voltage Apparatus Pages: 1-8(2025)
- 作者机构：
  
  1.国网青海省电力公司电力科学研究院，西宁　 810008
  2.国网青海省电力公司，西宁　 810008
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WANG Shengjie, MA Yongfu, MA Guoxiang, et al. Research on Enclosure Overheat Mechanism and Improvement Measures of 330 kV GIS[J/OL]. High voltage apparatus, 2025, 1-8.
DOI：

WANG Shengjie, MA Yongfu, MA Guoxiang, et al. Research on Enclosure Overheat Mechanism and Improvement Measures of 330 kV GIS[J/OL]. High voltage apparatus, 2025, 1-8. DOI：

摘要

气体绝缘金属封闭开关（GIS）经长期投入使用后发热缺陷突出，其中设备外壳波纹管及其附件处异常发热较为常见。文中针对变电站330 kV GIS主变分支母线外壳异常发热情况，结合精确红外测温发现发热点主要集中在波纹管本体、波纹管导流排、导流排压接螺栓、波纹管位移标尺和法兰间长拉杆等位置，采用波纹管通流检测、解体检查和外壳入地电流检测，分析发热故障产生原因并提出相应的处理措施。研究结果对于GIS外壳发热缺陷的分析、处理和预防具有一定的工程参考价值与借鉴意义。

Abstract

Gas insulated switchgear (GIS) has prominent heat defects after long-term use

with overheat at the enclosure bellows and its accessories of the equipment being more common. In this paper

according to the main transformer branch bus enclosure overheat of 330 kV GIS in converter substation

combined with accurate infrared temperature measurement

it is found that the hot spots are mainly concentrated in the bellows body

bellows binding bar

crimping bolt of binding bar

bellows displacement scale and long tie rod between flanges. The causes of the heat defect are analyzed and the corresponding measures are put forward by using the bellows flow-through detection

disassembly inspection and the enclosure grounding current detection. The research results have certain reference value for the analysis

treatment and prevention of GIS enclosure heat defects.

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references

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