On-line Monitoring of the Density of Environmentally Friendly Insulating Medium C4F7N/CO2 Gas Mixture

XIE Cheng; SHAO Xianjun; DING Wuxing; WANG Xin

doi:10.13296/j.1001-1609.hva.2024.09.019

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On-line Monitoring of the Density of Environmentally Friendly Insulating Medium C₄F₇N/CO₂ Gas Mixture

Detection of Environmental-friendly Gas Performance and Discharge Decomposition Products | 更新时间：2025-04-26

- On-line Monitoring of the Density of Environmentally Friendly Insulating Medium C₄F₇N/CO₂ Gas Mixture
- High Voltage Apparatus Vol. 60, Issue 9, Pages: 141-147(2024)
- 作者机构：
  
  1.国网浙江省电力有限公司电力科学研究院，杭州　 310014
  2.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：
  
  Science and Technology Project of SGCC(5200-201919063A-0-0-00)
- DOI：10.13296/j.1001-1609.hva.2024.09.019
  CLC：
- Received：28 March 2024，
  
  Revised：29 June 2024，
  
  Published：16 September 2024
- 稿件说明：
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XIE Cheng, SHAO Xianjun, DING Wuxing, et al. On-line Monitoring of the Density of Environmentally Friendly Insulating Medium C₄F₇N/CO₂ Gas Mixture[J]. High voltage apparatus, 2024, 60(9): 141-147.
DOI：

XIE Cheng, SHAO Xianjun, DING Wuxing, et al. On-line Monitoring of the Density of Environmentally Friendly Insulating Medium C₄F₇N/CO₂ Gas Mixture[J]. High voltage apparatus, 2024, 60(9): 141-147. DOI： 10.13296/j.1001-1609.hva.2024.09.019.

摘要

N/CO

混合绝缘气体的密度是决定其绝缘性能的重要因素，因此对C

N混合气体密度的实时监测尤为重要。C

N/CO

混合气体的温度—压力特性是研究其密度监测和校验的基础。因此，文中主要研究了不同混合比例C

N/CO

气体在0.12 MPa密度下的温度—压力特性，并与理想气体状态方程和SF

气体状态方程的理论计算结果进行比较，误差均在±1%以内。实验证明，在0.12 MPa的低密度下，不同混合比例的C

N/CO

气体特性近似符合理想气体状态方程。在对密度检测精度要求不高的场合，可以安装传统的SF

气体密度继电器进行C

N/CO

混合气体密度监测。根据C

N/CO

混合气体的温度—压力特性，可以研制C

N/CO

混合气体密度在线监测装置及其校验仪器。

Abstract

The density of the C

N/CO

mixed insulating gas is an important factor that determines its insulation performance

so real-time monitoring of the C

N mixed gas density is particularly important. The temperature-pressure characteristic of C

N/CO

mixed gas is the basis for studying its density monitoring and verification. Therefore

this paper mainly studies the temperature-pressure characteristics of C

N/CO

gas with different mixing ratios at a density of 0.12 MPa

and compares them with the theoretical calculation results of the ideal gas state equation and the SF

gas state equation. The error is within ±1%. Tests have proved that

at a low density 0.12 MPa

the gas characteristics of C

N/CO

with different mixing ratios are approximately in line with the ideal gas state equation. Where the accuracy of density detection is not strictly required

a traditional SF

gas density relay can be install

ed to monitor the density of C

N/CO

mixed gas. According to the temperature-pressure characteristics of the C

N/CO

mixed gas

an online monitoring device for the density of the C

N/CO

mixed gas and its calibration instrument can be developed.

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Related Institution

School of Electrical Engineering, Shenyang University of Technology

CGN Huizhou Nuclear Power Co., Ltd.

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School of Electric Engineering, Shenyang University of Technology

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