550 kV快速接地开关新型自力型触头设计与计算  

Design and Calculation of New Type Self-Elastic Contact for 550 kV High-Speed Earthing Switch

作　　者：郭瑞彬 沈威 王亚鸽 GUO Rui-bin;SHEN Wei;WANG Ya-ge(Siemens High Voltage Switchgear Co.,Ltd,Shanghai 200245,China)

机构地区：[1]上海西门子高压开关有限公司,上海200245

出　　处：《电工电气》2022年第2期57-60,共4页Electrotechnics Electric

摘　　要：针对接地开关常用梅花触头结构复杂、安装困难、成本较高等缺点,设计了新型自力型触头结构。通过增加压紧弹簧来提高接触压力,利用自身的高导电性和可靠的接触压力,提高耐受短路电流产生的电动力能力。采用有限元分析和理论计算对触指进行优化,计算触头接触压力,并对动热稳定性以及短路关合能力进行校核,确保了新型自力型触头设计合理性。This study designs a new self-elastic contact structure to solve the shortcomings of plum blossom contacts,such as complex structure,complex installation,high cost,etc.It increases the contact pressure by adding a compression spring,and uses its own high conductivity and reliable contact pressure to improve the electrodynamic ability to withstand short-circuit current.It increased the contact pressure by adding a compression spring and used its high conductivity and reliable contact pressure to improve the electric power capability generated by the withstand short-circuit current.This paper also used finite element analysis and theoretical calculation to optimize the contact finger,calculated the contact pressure of the contact,and verified the dynamic and thermal stability and short-circuits closing capability to ensure the rationality of the new self-supporting contact design.

关 键 词：快速接地开关 新型自力型触头 接触压力 动热稳定性 

分 类 号：TM564[电气工程—电器] TM595