低壓無功補(bǔ)償柜的電磁兼容特性分析
馬曉娟，梁忠生，胡標(biāo)，孫桂楠，黃名祥，張明明
(庫柏(寧波)電氣有限公司，浙江 寧波 315336)
摘 要：電工電子產(chǎn)品在低壓開關(guān)柜中的廣泛應(yīng)用，使得作為低壓開關(guān)柜型式試驗(yàn)考核項(xiàng)目之一的電磁兼容性 (EMC) 顯得尤為重要。以一臺(tái)帶靜止無功發(fā)生器 (SVG) 的低壓無功補(bǔ)償柜為例，在整柜的設(shè)計(jì)過程中，通過合理的元器件選型、屏蔽、濾波、接地等方法的柜體結(jié)構(gòu)設(shè)計(jì)規(guī)避電磁干擾，以保證低壓無功補(bǔ)償柜的電磁兼容特性。經(jīng)樣機(jī)試制與型式試驗(yàn)考核，驗(yàn)證了其在設(shè)計(jì)過程中應(yīng)重點(diǎn)注意的事項(xiàng)，并就 EMC 試驗(yàn)過程中出現(xiàn)的問題，給出了故障原因分析及整改舉措。
關(guān)鍵詞：低壓無功補(bǔ)償柜；電磁兼容性(EMC) ；屏蔽；濾波；接地
中圖分類號(hào)：TM591 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-3175(2022)01-0049-04
Analysis of EMC Characteristics of the Low Voltage
Reactive Power Compensation Cabinet
MA Xiao-juan, LIANG Zhong-sheng, HU Biao, SUN Gui-nan, HUANG Ming-xiang, ZHANG Ming-ming
（Cooper (Ningbo)Electric Co., Ltd, Ningbo 315336, China）
Abstract: Electrical and electronic products are widely used in low voltage switchgear. Therefore, electromagnetic compatibility (EMC) is one of the vital assessments of the low voltage switchgear type test.In this paper, a low voltage reactive power compensation cabinet with an SVG static reactive power generator has been taken as an example. In the whole cabinet design process, such as reasonable components selection, shielding, filtering, grounding, and other methods are adopted to avoid electromagnetic interference, to ensure the electromagnetic compatibility characteristics of low voltage reactive power compensation cabinet. After prototype trial production and type test assessment, it verified vital points in the design process. It proposes the failure reason analysis and rectification measures for the problems that occurred in the EMC test process.
Key words: low voltage reactive power compensation cabinet; electromagnetic compatibility (EMC); shielding; filtering; grounding
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