面状电极接地试验及在屏蔽工程接地中的应用

Planar electrode grounding test and its application in grounding of Shield Engineering

为解决工程建筑防电磁辐射屏蔽层接地性能差,影响电磁屏蔽效果的问题,用金属丝网和石墨导电混凝土制备面状电极,通过研究接地电阻随电极组合形式的变化,确定优化组合方案。相关实验表明,选用面状电极接地可使位于普通区域工程建筑的屏蔽层平均接地电阻为0.97Ω、位于高土壤电阻率区域工程建筑的屏蔽层平均接地电阻为7.88Ω,符合设计要求。

In order to solve the problems that grounding performance of building electromagnetic shield is poor, and the electromagnetic shielding effectiveness is bad, planar electrode is conducted with wire mesh and graphite electrically conductive concrete. Through the study of changes of grounding resistance with electrode combinations, the optimum combination scheme is determined. Experimental results demonstrated that selection of grounding electrode is located in the common area of an average shielding ground resistance of construction for 0. 97 Ω,located in areas of high soil resistivity shield average of grounding resistance of a building is 7.88 Ω, which is able to satisfy the requirements of design.