대전류 임펄스에 대한 소규모 메쉬전극의 과도접지임피던스 특성

Characteristics of Transient Ground Impedance of a Scaled Grounding Grid on the High Current Impulse

This paper presents the transient impedance when high current impulse up to 5 kA is applied to a scaled grounding grid in test field. For a realistic analysis of transient impedance on the high current impulse in the ground systems, grounding electrode installed outdoors and impulse current generator was used. The results were discussed based on its voltage and current trace, impulse impedance and V-I curve.