Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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550 kV快速接地開關(guān)新型自力型觸頭設(shè)計(jì)與計(jì)算

來源:電工電氣發(fā)布時(shí)間:2022-02-28 09:28 瀏覽次數(shù):637

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(duì)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(duì)觸指進(jìn)行優(yōu)化,計(jì)算觸頭接觸壓力,并對(duì)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(hào):TM564 ;TM595     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):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
 
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