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

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    基于開關(guān)電容器組的高壓斷路器操動(dòng)控制研究

    來源:電工電氣發(fā)布時(shí)間:2020-09-18 16:18 瀏覽次數(shù):863
    基于開關(guān)電容器組的高壓斷路器操動(dòng)控制研究
     
    韓東鵬,徐建源,庚振新,劉洋,張世維
    (沈陽工業(yè)大學(xué) 電氣工程學(xué)院,遼寧 沈陽 110870)
     
        摘 要:為了減小斷路器分合閘操作中電機(jī)操動(dòng)機(jī)構(gòu)驅(qū)動(dòng)電機(jī)啟動(dòng)的響應(yīng)時(shí)間,提高斷路器的分合閘速度并改善斷路器的觸頭震蕩現(xiàn)象,提出了應(yīng)用于電機(jī)操動(dòng)機(jī)構(gòu)的控制系統(tǒng)內(nèi)儲(chǔ)能電容的升壓變換器技術(shù)。針對(duì)126 kV真空斷路器分合閘的技術(shù)要求,采用開關(guān)電容器組作為升壓裝置,利用電容器切換技術(shù)改變斷路器進(jìn)行分合閘操作的能量存儲(chǔ)和釋放方式,對(duì)斷路器動(dòng)觸頭的運(yùn)動(dòng)過程進(jìn)行分段控制。在開關(guān)電容器組和普通儲(chǔ)能電容器的條件下,進(jìn)行了126 kV真空斷路器電動(dòng)機(jī)操動(dòng)機(jī)構(gòu)的分合閘試驗(yàn)。實(shí)驗(yàn)結(jié)果驗(yàn)證,與采用普通儲(chǔ)能電容的分合閘特性實(shí)驗(yàn)相比較,采用基于開關(guān)電容器組的電機(jī)控制系統(tǒng)可以有效地提高斷路器的分閘和合閘速度,并改善斷路器的觸點(diǎn)彈跳。
        關(guān)鍵詞:開關(guān)電容器組;真空斷路器;控制系統(tǒng);分合閘時(shí)間
        中圖分類號(hào):TM53;TM561     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):1007-3175(2020)09-0008-05
     
    Research on Operation Control of High Voltage Circuit Breaker Based on Switched Capacitor Bank
     
    HAN Dong-peng, XU Jian-yuan, GENG Zhen-xin, LIU Yang, ZHANG Shi-wei
    (School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China)
     
        Abstract: In order to reduce the response time of the motor operating mechanism driving the motor in the opening and closing operation of the circuit breaker, increase the opening and closing speed of the circuit breaker and improve the contact oscillation of the circuit breaker. This paper proposes a boost converter technology using energy storage capacitors in the control system of the motor operating mechanism. Aiming at the technical requirements for opening and closing of the 126 kV vacuum circuit breaker, a switched capacitor bank is used as a boost device, and the capacitor switching technology is used to change the energy storage and release mode of the circuit breaker for opening and closing operations, and to control the movement process of the moving contact of the circuit breaker in sections.In this paper, under the condition of the switched capacitor bank and the ordinary energy storage capacitor, the opening and closing experiment of the motor operating mechanism of the 126 kV vacuum circuit breaker is carried out. The experimental results certificate that, comparing with the experiment of opening and closing characteristics using ordinary energy storage capacitors, the motor control system based on the switched capacitor bank can effectively speed up the opening and closing rate of the circuit breaker. In addition, it can improve the contact bounce of the circuit breaker.
        Key words: switched capacitor bank; vacuum circuit breaker; control system; opening and closing time
     
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