550 kV快速接地開關(guān)新型自力型觸頭設(shè)計(jì)與計(jì)算
郭瑞彬,沈威,王亞鴿
(上海西門子高壓開關(guān)有限公司,上海 200245)
摘 要:針對接地開關(guān)常用梅花觸頭結(jié)構(gòu)復(fù)雜、安裝困難、成本較高等缺點(diǎn),設(shè)計(jì)了新型自力型觸頭結(jié)構(gòu)。通過增加壓緊彈簧來提高接觸壓力,利用自身的高導(dǎo)電性和可靠的接觸壓力,提高耐受短路電流產(chǎn)生的電動(dòng)力能力。采用有限元分析和理論計(jì)算對觸指進(jìn)行優(yōu)化,計(jì)算觸頭接觸壓力,并對動(dòng)熱穩(wěn)定性以及短路關(guān)合能力進(jìn)行校核,確保了新型自力型觸頭設(shè)計(jì)合理性。
關(guān)鍵詞:快速接地開關(guān);新型自力型觸頭;接觸壓力;動(dòng)熱穩(wěn)定性
中圖分類號:TM564 ;TM595 文獻(xiàn)標(biāo)識碼:B 文章編號:1007-3175(2022)02-0057-04
Design and Calculation of New Type Self-Elastic Contact for
550 kV High-Speed Earthing Switch
GUO Rui-bin, SHEN Wei, WANG Ya-ge
(Siemens High Voltage Switchgear Co., Ltd, Shanghai 200245, China)
Abstract: 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.
Key words: high-speed earthing switch; new type self-elastic contact; contact pressure; dynamic thermal stability
參考文獻(xiàn)
[1] 黎斌.SF6 高壓電器設(shè)計(jì)[M].5 版. 北京:機(jī)械工業(yè)出版社,2019.
[2] 黎斌,張正周. 彈簧觸頭的設(shè)計(jì)[J] . 高壓電器,2007,43(5) :358-360.
[3] 郭媛媛,崔博源,王承玉,等.1 100 kV/63 kA 氣體絕緣金屬封閉開關(guān)設(shè)備的研制[J] . 電網(wǎng)技術(shù),2011,35(12) :20-25.
[4] 李健. 淺析彈簧觸指在 GIS 中的應(yīng)用[J]. 高壓電器,2007,43(6) :438-439.
[5] 耿小亮,范春虎,艾紹貴,等. SF6 電流互感器結(jié)構(gòu)強(qiáng)度有限元分析[J]. 高壓電器,2007,43(4) :250-252.
[6] 孫永恒,張鐸,孟維東,等. 新沈高 1 100 kV GIS 的結(jié)構(gòu)及計(jì)算[J]. 高壓電器,2007,43(5) :354-357.
[7] 林莘,何柏娜,徐建源. 自力型觸頭的設(shè)計(jì)與計(jì)算[J]. 高電壓技術(shù),2008,34(4) :828-830.
[8] 張正周,黎斌. 彈簧觸頭設(shè)計(jì) (Ⅱ) [J] . 高壓電器,2009,45(3) :70-72.
[9] 李雪. 一種新型的 GIS 快速接地閘刀[J]. 華東電力,2003,31(9) :86-87.
[10] 張猛,馬曾銳.ZF8-550/4000-63 GIS 的研制[J].高壓電器,2007,43(6) :440-443.
[11] 盧彥輝,張銀穗,孫英杰,等.1 100 kV 快速接地開關(guān)短路關(guān)合試驗(yàn)研究[J] . 電工文摘,2015(3) :33-35.
[12] 曹斌. 斷路器自力型主觸頭設(shè)計(jì)方法及應(yīng)用[J] .機(jī)電信息,2011(15) :148-149.