새로운 저항성 누전전류 측정 방법

다국어 초록 (Multilingual Abstract)

It is important to measure the resistive component separately from the total leakage current at power distribution line. It is because electric disasters such as electric shock and fire are caused mainly by the resistive component of the total leakage current. In this paper, a new theory for measuring the resistive component separately from the total leakage current is suggested, and is embodied to an actual circuit using operational amplifiers, analog switch and R-C low pass filter. Through experiments for various cases containing both the resistive and capacitive leakage currents, the suggested algorithm is confirmed to be able to measure the resistive leakage current within 4.1% of error even when the capacitive leakage current is much bigger than the resistive one. The suggested method is expected to lower the total cost because it can be realized using simple and cheap devices, and implies the measuring time can be possibly reduced because the resistive leakage current is computed exactly from the signals during only a half period of power voltage.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 저항성 누전전류 산출 원리
• 3. 저항성 누전전류 산출 실험
• 4. 결론
• 감사의 글
• 참고문헌
• 저자소개

참고문헌 (Reference)

1 "클램프형 전류계에 의한 누설전류 측정방법" 대한전기협회지 1987

2 "클램프 형 직교류 저 전류 측정 센서" 15 (15): 1045-1053, 2002

3 "접지선 누설전류를 이용한 접지저항 측정에 관한 연구" 515-517, 2004

4 "전기화재의 발생원인 및 분석 -누전차단기의 동작특성을 중심으로-" 17 (17): 2003

5 "저항 측정 방법" 대한민국특허청 (공개번호 10-2004-0071673) : 2004

6 "저압 선로의 활선 절연 감시장치" (공개번호 20-0401675) : 2005

7 "누전차단기로 보호되는 저압선로에서의 발화위험성" 15 (15): 93-99, 2000

8 "누전전류차단 및 방법" (국제공개번호 WO2006/035519) : 2006

9 "누설전류 파고분석에 의한 전력설비의 열화진단 기술" 5 (5): 367-370, 2001

10 "누설전류 측정을 이용한 부재수용가의 전기안전 점검" 260-263, 2006

11 "기사회원을 위한 이론과 실무 누전에 의한 감전재해와 누전차단기" 대한전기협회지 1987

12 "A Highly Accurate, Hand-Held Clamp-on Current Transformer" 45 (45): 445-448, 1996