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The Analysis of Ground Potential Rise for Shapes of Grounding Electrode Using Hemispherical Grounding Simulation System  

Gil Hyoung-Jun (전기안전연구원)
Choi Chung-Seog (전기안전연구원)
Lee Bok-Hee (인하대학 전자 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.54, no.7, 2005 , pp. 319-325 More about this Journal
Abstract
In order to analyze ground potential rise of grounding system installed in buildings, the hemispherical grounding simulation system has been designed and fabricated as substantial and economical measures. Ground potential rise(GPR) has been measured and analyzed for shapes of grounding electrode using the system in real time. The system is apparatus to have a free reduced scale for conductor size and laying depth of a full scale grounding system and is constructed so that a shape of equipotential surface is nearly identified a free reduced scale with a real scale when a current flows through grounding electrode. The system was composed of a hemispherical water tank, AC Power supply, a movable potentiometer, and test grounding electrodes. The test grounding electrodes were fabricated through reducing grounding electrode installed in real buildings such as rod type, mesh grid type. When a mesh grid type was associated with a rod type, GPR was the lowest value. The proposed results would be applicable to evaluate GPR in the grounding systems. and the analytical data can be used 0 stabilize the electrical installations and prevent the electrical disasters.
Keywords
Ground Potential Rise; Grounding Simulation System; Reduced Scale; Test Grounding Electrode; Electrical Disaster;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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