A Numerical Study on the Decomposition and Diffusion Characteristics of SF6 in Gas-Insulated Switchgear with Consideration of the Temperature Rising Effect

被引：1

作者：

Jia, Chenglong ^{[1
]}

Zhao, Wenbin ^{[1
]}

Zhu, Yong ^{[2
]}

Lu, Wu ^{[1
]}

Tang, Zhong ^{[1
]}

机构：

[1] Shanghai Univ Elect Power, Coll Elect Engn, Shanghai 2588,Changyang Rd, Shanghai 200090, Peoples R China

[2] Hefei Power Supply Co, 133 Susong Rd, Hefei 230000, Peoples R China

来源：

ENERGIES | 2022年 / 15卷 / 21期

关键词：

GIS disconnect switch; contact overheating; numerical simulation; SF6 gas diffusion;

D O I：

10.3390/en15217834

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The optimized concentration of SF6 gas is the key to maintaining a good insulation performance by GIS equipment. The precise measurements of the SF6 concentration and decomposition byproducts could be used to indicate the remaining GIS insulation level during long-term operations. In this paper, a finite-element simulation model was created to investigate the SF6 gas decomposition and diffusion dynamics. A theoretical analysis and simulation of the overheating fault, i.e., the contact between the GIS disconnect switches, were carried out, followed by an estimation of the SF6 decomposition and diffusion characteristics caused by the local heating faults, based on the calculated flow velocity field and temperature field.

引用

页数：16

共 21 条

[1]

Camilli G., 1952, Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, V71, P348

[2]

[陈强 Chen Qiang], 2015, [电工技术学报, Transactions of China Electrotechnical Society], V30, P298

[3]

Chen Tianxiang, 2014, Engineering Journal of Wuhan University, V47, P494

[4] 基于二阶微扰理论的油中溶解气体拉曼检测数据分析研究 [J].

陈新岗 ;

李昌鑫 ;

冯煜轩 ;

赵唐 ;

余兵 .

高压电器, 2018, 54 (09) :117-122

[5]

Cui Y., 2015, HIGH VOLT ELECT, V51, P6

[6]

Dakin T. W., 1980, Gaseous Dielectrics II. Proceedings of the Second International Symposium on Gaseous Dielectrics, P283

[7] Thermal stability of SF6 associated with metallic conductors incorporated in gas insulated switchgear power substations [J].

Dervos, C. T. ;

Vassiliou, P. ;

Mergos, J. A. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (22) :6942-6952

[8]

Fan Q, 2013, DEV EXPT SYSTEM EXPT

[9]

Feng Y., 2022, HIGH VOLT ELECT, V58, P6

[10] Influence of Natural Convection and Volume Change on Numerical Simulation of Phase Change Materials for Latent Heat Storage [J].

Moench, Sabine ;

Dittrich, Robert .

ENERGIES, 2022, 15 (08)

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