電力自動(dòng)化設(shè)備機(jī)柜屏蔽效能測試與整改
肖保明
（國網(wǎng)電力科學(xué)研究院 實(shí)驗(yàn)驗(yàn)證中心，江蘇 南京 210003）
摘 要：介紹了電力機(jī)柜屏蔽效能的測試方法和整改措施，分析了電力機(jī)柜屏蔽效能與機(jī)柜內(nèi)部的電力二次設(shè)備輻射電磁抗擾度之間的關(guān)系，并提出了一種有效提高電力機(jī)柜內(nèi)部二次設(shè)備或系統(tǒng)電磁輻射抗擾度的方法，通過實(shí)驗(yàn)驗(yàn)證表明，在機(jī)柜開口的屏蔽網(wǎng)罩，必須保證它的電連續(xù)性，開口或連接不好的縫隙，會(huì)使屏蔽網(wǎng)罩的作用大幅降低，甚至沒有屏蔽作用。
關(guān)鍵詞：屏蔽效能；二次設(shè)備；電力機(jī)柜；電磁兼容
中圖分類號：TM76 文獻(xiàn)標(biāo)識碼：A 文章編號：1007-3175(2016)05-0042-04
Shielding Effectiveness Measurement and Reform of Power Automation Equipment Cabinet
XIAO Bao-ming
（The Experiment & Verification Center of State Grid Electric Power Research Institute, Nanjing 210003, China）
Abstract: Introduction was made to a test method of power cabinet shielding effectiveness. The paper analyzed the relationship between the power cabinet shielding effectiveness and the radiation electromagnetic immunity of the electric power secondary equipment within the cabinet and raised a kind of effective method to increase the radiation electromagnetic immunity of secondary equipment and system within in the electric cabinets. The experiment results show that the shielding mesh enclosure of open end electric cabinets should be switched on constantly, otherwise the function of shielding mesh enclosure would be reduced greatly, even there is non any shielding functions.
Key words: shielding effectiveness; secondary equipment; electric cabinet; electromagnetic compatibility
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