전위강하법에 의한 접지저항 측정시 보조전극의 위치변화에 따른 오차 분석

• Published in: 전기학회 논문지 P권, 59(2) Vol. 59; no. 2; pp. 222 - 231
• Main Authors: 김동우(Dong-Woo Kim), 길형준(Hyoung-Jun Gil), 김동욱(Dong-Ook Kim), 이기연(Ki-Yeon Lee), 문현욱(Hyun-Wook Moon), 김향곤(Hyang-Kon Kim)
• Format: Journal Article
• Language: Korean
• Published: 대한전기학회 2010
• Subjects: 전기공학; Ground Resistance; Auxiliary Probes; Measurement Error; Fall-of-Potential
• ISSN: 1229-800X; 2586-7792

This paper presents numerical analysis of measurement errors of ground electrode using the fall-of-potential method. In order to analyze ground resistance error according to the positions of auxiliary probes, firstly, national and international standards were researched. Secondly, numerical ground resistance error of hemispheric electrode was analyzed according to the locations of auxiliary probes and the angle between probes. Then, error-reduced positions of auxiliary probes were shown according to the distance to auxiliary current probe versus ground electrode size. Finally, error compensation method was presented. The results presented in this paper provide useful information regarding ground resistance error of alternative positions of auxiliary probes in case that the auxiliary probes could not be located at the proper position in such cases as there are buildings, roadblock or underground metallic pipe at that position.