電力自動化設備機柜屏蔽效能測試與整改
肖保明
(國網電力科學研究院 實驗驗證中心,江蘇 南京 210003)
摘 要:介紹了電力機柜屏蔽效能的測試方法和整改措施,分析了電力機柜屏蔽效能與機柜內部的電力二次設備輻射電磁抗擾度之間的關系,并提出了一種有效提高電力機柜內部二次設備或系統電磁輻射抗擾度的方法,通過實驗驗證表明,在機柜開口的屏蔽網罩,必須保證它的電連續性,開口或連接不好的縫隙,會使屏蔽網罩的作用大幅降低,甚至沒有屏蔽作用。
關鍵詞:屏蔽效能;二次設備;電力機柜;電磁兼容
中圖分類號:TM76 文獻標識碼: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
參考文獻
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