Novel Filling Technology for SF<sub>6</sub>/N<sub>2</sub>Mixed Gas GIS Equipment

CHENG Cheng; WANG Yibo; ZHANG Yuan; HUO Yaojia; WANG Lizhi; DING Wuxing

doi:10.11930/j.issn.1004-9649.202411051

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Novel Filling Technology for SF₆/N₂Mixed Gas GIS Equipment

更新时间：2025-10-29

- Novel Filling Technology for SF₆/N₂Mixed Gas GIS Equipment
- Vol. 58, Issue 10, Pages: 206-215(2025)
- 作者机构：
  
  1. 国网宁夏电力有限公司超高压公司,宁夏,银川,750001
  2. 国网宁夏电力有限公司电力科学研究院,宁夏,银川,750011
  3. 泰普联合科技开发（北京）有限公司,北京,100096
- 作者简介：
- 基金信息：
- DOI：10.11930/j.issn.1004-9649.202411051
  CLC：
- Published Online：23 October 2025，
  
  Published：2025
- 稿件说明：
移动端阅览
成诚, 王一波, 张源, 霍耀佳, 王立志, 丁五行. SF

CHENG Cheng, WANG Yibo, ZHANG Yuan, et al. Novel Filling Technology for SF₆/N₂Mixed Gas GIS Equipment[J]. 2025, 58(10): 206-215.
成诚, 王一波, 张源, 霍耀佳, 王立志, 丁五行. SF DOI： 10.11930/j.issn.1004-9649.202411051.

CHENG Cheng, WANG Yibo, ZHANG Yuan, et al. Novel Filling Technology for SF₆/N₂Mixed Gas GIS Equipment[J]. 2025, 58(10): 206-215. DOI： 10.11930/j.issn.1004-9649.202411051.

摘要

针对现有SF

混合气体GIS设备充气装置存在的充气速度缓慢及装置成本高昂等问题，提出了基于加热管道气体流量控制技术的混合气体管道直充方法，摒弃了传统意义上须内置MFC的需求。通过理论分析和ANSYS仿真确定了气体流量-温升实验平台的实验参数，构建了3 m加热管道、初始温差分别为20 ℃和30 ℃的气体流量预测模型，并结合串级模糊PID控制器实现气体流量的精准调控。实验结果显示，串级模糊PID控制器的性能评价指标均优于串级PID控制器，且当SF

初始温差为20 ℃或30 ℃，N

初始温差为30 ℃时，稳态输出的混合气体中SF

占比偏差低于1.0%。设计充气装置并进行验证，结果表明在充气压力高于0.2 MPa时，SF

占比偏差符合标准DL/T 2243—2021，能够满足现场充气需求。

Abstract

To address issues such as slow filling speed and high cost in existing SF

gas-insulated switchgear (GIS) filling devices

a direct pipeline filling method based on heated-pipeline gas flow control technology is proposed. This approach eliminates the need for built-in mass flow controllers (MFCs). Through theoretical analysis and ANSYS simulations

experimental parameters for the gas flow–temperature rise test platform were determined. A 3-meter heated pipeline was constructed

and gas flow prediction models were established for initial temperature differences of 20 °C and 30 °C. Precise gas flow regulation was achieved using a cascade fuzzy

PID controller. Experimental results show that the cascade fuzzy PID controller outperforms the cascade PID controller across all performance metrics. When the initial temperature difference for SF

is 20 °C or 30 °C and 30 °C for N

the deviation in the SF

proportion in the mixed gas remains below 1.0%. A prototype filling device was designed and tested

demonstrating that when the filling pressure exceeds 0.2 MPa

the SF

proportion deviation complies with the standard DL/T 2243—2021

meeting on-site filling requirements.

关键词

Keywords

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Novel Filling Technology for SF6/N2Mixed Gas GIS Equipment

DOI：10.11930/j.issn.1004-9649.202411051

摘要

Abstract

关键词

Keywords

references

Novel Filling Technology for SF₆/N₂Mixed Gas GIS Equipment