Effect of Oxygen and Temperature on Thermal Decomposition Characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> Gas Mixture for MV Equipment

Effect of Oxygen and Temperature on Thermal Decomposition Characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> Gas Mixture for MV Equipment

Perfluoroisobutyronitrile (C<sub>4</sub>F<sub>7</sub>N)/CO<sub>2</sub>/O<sub>2</sub> has been considered as a potential eco-friendly gas insulating medium to replace SF<sub>6</sub> due to its unique dielectric properties. Nowadays, few stud...

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Main Authors: Fanchao Ye, Xiaoxing Zhang, Cheng Xie, Xiang Sun, Peng Wu, Song Xiao, Ju Tang, Yi Li
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
C₄F₇N/CO₂/O₂
partial overheating fault
decomposition characteristic
SF₆ alternative gas
MV equipment
Online Access:https://ieeexplore.ieee.org/document/9286422/
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spelling doaj-e97a3060d4054e4bbd9a95a996ad09d82021-03-30T04:46:07ZengIEEEIEEE Access2169-35362020-01-01822100422101210.1109/ACCESS.2020.30433349286422Effect of Oxygen and Temperature on Thermal Decomposition Characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> Gas Mixture for MV EquipmentFanchao Ye0https://orcid.org/0000-0002-2938-9246Xiaoxing Zhang1https://orcid.org/0000-0001-5872-2039Cheng Xie2Xiang Sun3Peng Wu4Song Xiao5https://orcid.org/0000-0002-4749-4058Ju Tang6Yi Li7https://orcid.org/0000-0003-2236-895XSchool of Electrical Engineering and Automation, Wuhan University, Wuhan, ChinaSchool of Electrical Engineering and Automation, Wuhan University, Wuhan, ChinaState Grid Zhejiang Electric Power Research Institute, Hangzhou, ChinaState Grid Zhejiang Electric Power Research Institute, Hangzhou, ChinaSchool of Electrical Engineering and Automation, Wuhan University, Wuhan, ChinaSchool of Electrical Engineering and Automation, Wuhan University, Wuhan, ChinaSchool of Electrical Engineering and Automation, Wuhan University, Wuhan, ChinaSchool of Electrical Engineering and Automation, Wuhan University, Wuhan, ChinaPerfluoroisobutyronitrile (C<sub>4</sub>F<sub>7</sub>N)/CO<sub>2</sub>/O<sub>2</sub> has been considered as a potential eco-friendly gas insulating medium to replace SF<sub>6</sub> due to its unique dielectric properties. Nowadays, few studies on the thermal stability and decomposition properties of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> gas mixture were reported, which needs to be evaluated comprehensively. Herein, for the first time, we explored the effect of oxygen and temperature on thermal decomposition characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> gas mixture. It was found that CF<sub>4</sub>, C<sub>3</sub>F<sub>8</sub>, C<sub>3</sub>F<sub>6</sub>, CO, COF<sub>2</sub>, CF<sub>3</sub>CN, C<sub>2</sub>F<sub>5</sub>CN and C<sub>2</sub>N<sub>2</sub> are the main by-products of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> gas mixture upon decomposition. The addition of 2%-10% O<sub>2</sub> in the C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub> gas mixture yielded decreased of C<sub>3</sub>F<sub>6</sub> and C<sub>2</sub>N<sub>2</sub> while the increase of other by-products. The yields and effective formation rates of C<sub>3</sub>F<sub>8</sub> and COF<sub>2</sub> accelerated when the content of O<sub>2</sub> was higher than 8%. In terms of practical application, adding 4-6% O<sub>2</sub> to C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub> gas mixture is appropriate and COF<sub>2</sub>, C<sub>2</sub>N<sub>2</sub>, C<sub>2</sub>F<sub>5</sub>CN can be used as the characteristic products to reflect the severity of partial overheating fault of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> gas insulated equipment.https://ieeexplore.ieee.org/document/9286422/C₄F₇N/CO₂/O₂partial overheating faultdecomposition characteristicSF₆ alternative gasMV equipment
collection DOAJ
language English
format Article
sources DOAJ
author Fanchao Ye
Xiaoxing Zhang
Cheng Xie
Xiang Sun
Peng Wu
Song Xiao
Ju Tang
Yi Li
spellingShingle Fanchao Ye
Xiaoxing Zhang
Cheng Xie
Xiang Sun
Peng Wu
Song Xiao
Ju Tang
Yi Li
Effect of Oxygen and Temperature on Thermal Decomposition Characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> Gas Mixture for MV Equipment
IEEE Access
C₄F₇N/CO₂/O₂
partial overheating fault
decomposition characteristic
SF₆ alternative gas
MV equipment
author_facet Fanchao Ye
Xiaoxing Zhang
Cheng Xie
Xiang Sun
Peng Wu
Song Xiao
Ju Tang
Yi Li
author_sort Fanchao Ye
title Effect of Oxygen and Temperature on Thermal Decomposition Characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> Gas Mixture for MV Equipment
title_short Effect of Oxygen and Temperature on Thermal Decomposition Characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> Gas Mixture for MV Equipment
title_full Effect of Oxygen and Temperature on Thermal Decomposition Characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> Gas Mixture for MV Equipment
title_fullStr Effect of Oxygen and Temperature on Thermal Decomposition Characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> Gas Mixture for MV Equipment
title_full_unstemmed Effect of Oxygen and Temperature on Thermal Decomposition Characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> Gas Mixture for MV Equipment
title_sort effect of oxygen and temperature on thermal decomposition characteristics of c<sub>4</sub>f<sub>7</sub>n/co<sub>2</sub>/o<sub>2</sub> gas mixture for mv equipment
publisher IEEE
series IEEE Access
issn 2169-3536
publishDate 2020-01-01
description Perfluoroisobutyronitrile (C<sub>4</sub>F<sub>7</sub>N)/CO<sub>2</sub>/O<sub>2</sub> has been considered as a potential eco-friendly gas insulating medium to replace SF<sub>6</sub> due to its unique dielectric properties. Nowadays, few studies on the thermal stability and decomposition properties of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> gas mixture were reported, which needs to be evaluated comprehensively. Herein, for the first time, we explored the effect of oxygen and temperature on thermal decomposition characteristics of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> gas mixture. It was found that CF<sub>4</sub>, C<sub>3</sub>F<sub>8</sub>, C<sub>3</sub>F<sub>6</sub>, CO, COF<sub>2</sub>, CF<sub>3</sub>CN, C<sub>2</sub>F<sub>5</sub>CN and C<sub>2</sub>N<sub>2</sub> are the main by-products of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> gas mixture upon decomposition. The addition of 2%-10% O<sub>2</sub> in the C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub> gas mixture yielded decreased of C<sub>3</sub>F<sub>6</sub> and C<sub>2</sub>N<sub>2</sub> while the increase of other by-products. The yields and effective formation rates of C<sub>3</sub>F<sub>8</sub> and COF<sub>2</sub> accelerated when the content of O<sub>2</sub> was higher than 8%. In terms of practical application, adding 4-6% O<sub>2</sub> to C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub> gas mixture is appropriate and COF<sub>2</sub>, C<sub>2</sub>N<sub>2</sub>, C<sub>2</sub>F<sub>5</sub>CN can be used as the characteristic products to reflect the severity of partial overheating fault of C<sub>4</sub>F<sub>7</sub>N/CO<sub>2</sub>/O<sub>2</sub> gas insulated equipment.
topic C₄F₇N/CO₂/O₂
partial overheating fault
decomposition characteristic
SF₆ alternative gas
MV equipment
url https://ieeexplore.ieee.org/document/9286422/
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