In this paper, the limitations and practical improvement plans of the currently used integrated grounding method earth resistance measurement were presented. According to the potential drop method, it is recommended to separate more than 80m from the earth electrode in consideration of the error rate.Being more than 80m away from the site is realistically subject to many restrictions. In this paper, in order to check whether the ground resistance value falls within the error range while reducing the separation distance through measurement, an integrated grounding demonstration test facility was first established, a comprehensive earth resistance meter, and a multi-function measuring instrument were used to repeatedly measure the earth resistance of auxiliary poles by equipment and by distance.Through the measurement, it was proved that the error range by distance proposed in the potential drop method was within the error range even if the current auxiliary electrode was separated by 50M rather than 80M apart, which is the existing measurement method. In addition, through analysis of the measurement data, it was confirmed that the ground resistance cannot be measured properly if the ground resistance is measured depending on the auxiliary earth electrode installed in the field in a state where the location of the auxiliary earth electrode installed on the site is unknown. It was concluded that a partial examination was necessary in The results of this paper are expected to be used as important basic data for realistic and safe earth resistance measurement in the future.
한국어
본 논문에서는 현재 사용되고 있는 통합접지방식 접지저항 측정의 한계점 및 현실적 개선안을 제시하였 다. 전위강하법에 따르면 오차율을 감안하여 접지극에서 80m이상 이격을 권고하고 있으나, 현장에서 80m이상 이 격하는 것은 현실적으로 많은 제약이 따른다. 본 논문에서는 측정을 통해 이격거리를 줄이면서 접지저항 값이 오 차범위 내 들어오는지를 확인하기 위해 먼저 통합접지 실증시험 설비를 구축하였으며, 접지저항을 측정하는 대표 적인 3종류의 장비로써 폭넓게 사용되고 있는 정밀접지저항계, 종합접지저항계, 다기능계측기를 활용하여 장비별 보조극과 거리별 접지저항을 반복 측정하였다. 측정을 통해 전위강하법에서 제안한 거리별 오차범위를 기존의 측 정 방법인 전류보조극을 80m 이격하는 것보다 50m까지 이격하여도 오차범위에 들어왔음을 입증하였다. 또한 측 정 데이터 분석을 통해 현장에 설치된 보조접지극의 위치를 알 수 없는 상태에서 기설치된 보조접지극에 의존하 여 접지저항을 측정하면 제대로 된 접지저항을 측정할 수 없음을 확인하였고, 결국 접지시스템을 검사함에 있어서 반드시 부분검사가 필요하다는 결론을 도출하였다. 본 논문의 결과는 향후 현실적이면서 안전한 접지저항 측정에 있어서 중요한 기초자료로 활용될 것으로 기대된다.
목차
요약 Abstract Ⅰ. 서론 Ⅱ. 접지설비의 방법 및 기준 2.1 접지설비의 개요 및 구분 2.2 접지시스템의 종류 2.3 접지저항 측정방법의 종류[10] Ⅲ. 통합접지 실증 실험 및 결과 3.1 통합접지 실증 시험설비 구축 3.2 접지저항 측정 장비별, 보조극 거리별실험 3.3 전위강하법에 의한 보조접지극 거리에따른 오차율 변화 실험 Ⅳ. 결론 REFERENCES
키워드
전위강하법오차율접지저항이격거리통합접지Potential drop methodError rateGrounding resistanceSeparation distanceIntegrated grounding
저자
송준태 [ Jun-Tae Song | 전북대학교 IT응용시스템공학과 학생 ]
김재진 [ Jae-Jin Kim | 전북대학교 IT응용시스템공학과 학생 ]
방준호 [ Jun-Ho Bang | 전북대학교 IT응용시스템공학과 교수 ]
Corresponding Author
Ever since next generation convergence technology became one of the most important industries in the nation, computing professionals have encountered a growing number of challenges. Along with scholars and colleagues in related fields, they have gathered in avariety of forums and meetings over the last few decades to share their knowledge, experiences and the outcome of their research. These exchanges have led to the founding of the International Next-generation Convergence technology (INCA) on December 1, 2015. INCA was registered as an incorporated association under the Ministry of Information and Communications. The main purpose of the organization is to improve our society by achieving the highest capability possible in next generation convergence technology.
간행물
간행물명
차세대융합기술학회논문지 [The Journal of Next-generation Convergence Technology Association]