勵(lì)磁涌流分析及其實(shí)驗(yàn)裝置的實(shí)現(xiàn)
劉蘭榮，趙志強(qiáng)，王偉，張曉光
保定天威集團(tuán)有限公司，河北 保定 071056
摘 要：勵(lì)磁涌流是變壓器空載合閘時(shí)不可避免的現(xiàn)象。從實(shí)驗(yàn)角度對(duì)勵(lì)磁涌流的表現(xiàn)加以分析，并以晶閘管配合交流接觸器作為核心器件，制造了合閘相位角可控的勵(lì)磁涌流發(fā)生控制裝置，模擬實(shí)際中可能出現(xiàn)的各種勵(lì)磁涌流現(xiàn)象，進(jìn)行相關(guān)勵(lì)磁涌流峰值、衰減特性等的分析。試驗(yàn)結(jié)果表明該裝置可作為勵(lì)磁涌流計(jì)算的有效驗(yàn)證手段。
關(guān)鍵詞：勵(lì)磁涌流；晶閘管；合閘相位角
中圖分類號(hào)：TM401 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-3175(2014)04-0027-04
Implementation of Excitation Inrush Current Analysis and Experimental Facility
LIU Lan-rong, ZHAO Zhi-qiang, WANG Wei, ZHANG Xiao-guang
Baoding Tianwei Group Co., Ltd., Baoding 071056, China
Abstract: The excitation inrush current is the inevitable phenomenon in transformer no-load closing. This paper analyzed the phenomenon of excitation inrush current from the corner of experiments. An excitation inrush current generation control device, controlled by the closing phase angle, with thyristors and AC contactor as the core components, was manufactured. This paper simulated various possible arisen phenomena of excitation inrush current in practice and analyzed the related peak value of excitation inrush current, the attenuation characteristics and so on. Experimental results show that the device could be the effective verification way to calculate excitation inrush current.
Key words: excitation inrush current; thyristor; closing phase angle
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