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Decomposition characteristics of C6F12O/CO2 mixed gas with different partial discharge intensity under floating electrode defect
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Xiajin RAO1, 2, Xiaoxing ZHANG1, Dajian LI1, Lei ZHANG1, Boya PENG1, Wei HUANG1
Insulating Materials | 2023, 56(11) : 87 - 93
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Insulating Materials | 2023, 56(11): 87-93
• Test and Analysis •
Decomposition characteristics of C6F12O/CO2 mixed gas with different partial discharge intensity under floating electrode defect
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Xiajin RAO1, 2, Xiaoxing ZHANG1, Dajian LI1, Lei ZHANG1, Boya PENG1, Wei HUANG1
Affiliations
  • 1Electric Power Research Institute of Guangxi Power Grid Co., Ltd., Nanning 530023, China
  • 2Guangxi;Key Laboratory of Intelligent Control and Maintenance of Power Equipment, Nanning 530023, China
Published: 2023-11-20 doi: 10.16790/j.cnki.1009-9239.im.2023.11.014
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C6F12O is a potential substitute gas for SF6. To explore the decomposition characteristics of C6F12O/CO2 mixed gas under floating electrode defect and different partial discharge intensity, a partial discharge decomposition test platform was built, and 96 h partial discharge decomposition experiments were conducted on C6F12O/CO2 mixed gas under different applied voltages. The decomposition components were quantitatively analyzed by gas chromatography. The relationship between the decomposition components content, gas production rate, characteristic gas ratio and partial discharge intensity was studied respectively. The results show that the change rule of concentration, gas production rate of four typical products (CF4, C2F6, C3F8, C3F7H) are different, which can be used as the characteristic component to judge the partial discharge intensity. The concentration relationship of characteristic components is c(CF4)>c(C2F6)≈c(C3F8)>c(C3F7H), and the gas production rate relationship is similar. The concentration of characteristic components shows a “linear-saturated” growth with the increase of discharge intensity. It is preliminarily suggested that using c(CF4)/c(C3F7H) as the auxiliary basis, and c(CF4+C2F6+C3F8)2/c(C3F7H)2 as the main basis, the PD intensity and defect severity can be judged combined with component content and gas production rate, which provide reference for finding out the operation and maintenance monitoring methods applicable to C6F12O/CO2 mixed gas insulation equipment.

C6F12O/CO2 mixed gas  /  partial discharge  /  floating electrode defect  /  decomposition characteristic  /  content ratio
Xiajin RAO, Xiaoxing ZHANG, Dajian LI, Lei ZHANG, Boya PENG, Wei HUANG. Decomposition characteristics of C6F12O/CO2 mixed gas with different partial discharge intensity under floating electrode defect[J]. Insulating Materials, 2023 , 56 (11) : 87 -93 . DOI: 10.16790/j.cnki.1009-9239.im.2023.11.014
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Year 2023 volume 56 Issue 11
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2023.11.014
  • Receive Date：2023-01-18
  • Online Date：2025-11-24
  • Published：2023-11-20
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  • Received：2023-01-18
  • Revised：2023-02-24
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    1Electric Power Research Institute of Guangxi Power Grid Co., Ltd., Nanning 530023, China
    2Guangxi;Key Laboratory of Intelligent Control and Maintenance of Power Equipment, Nanning 530023, China
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表12种不同金属材料的力学参数
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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