20,000 A 전류변성기 국가표준 시스템 구축

다국어 초록 (Multilingual Abstract)

National standard system for calibrating current transformer(CT) up to primary current of 20,000 A have been established. The system consists of 20,000 A AC high current source, CT comparator, standard CT, CT under test and CT burden. An AC high current is applied to the primary windings of both the standard CT and the CT under test, and then the CT comparator measures the ratio error and the phase displacement by comparing the secondary currents of the two transformers. As a validity check for 20,000 A CT calibration system, the comparison with the two national standard institutes(NMIs) has been performed using same CTs. The comparison results of the CTs are consistent with those measured at two NMIs within 0.004 % for ratio error and 0.1 min for phase displacement in the primary current ranges of Ip = 10 - 20,000 A with a secondary current of Is = 5 A.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 교류 대전류 20,000 A 시스템의 구성 및 사양
• 3. 20,000 A 대전류 시스템의 시험거동
• 4. 국제 비교측정을 통한 시스템의 성능평가
• 5. 결론
• 감사의 글
• 참고문헌
• 저자소개

참고문헌 (Reference)

1 정재갑, "전류변성기 비교측정 장치의 현장 평가기술" 대한전기학회 56 (56): 926-932, 2007

2 한국표준협회, "계기용변성기(표준용 및 일반계기용)" 한국표준협회 1982

3 Gun-Woo Moon, "Predictive current control of distribution static condenser (D-STATCON) for reactive power compensation in flexible AC transmission system (FACTS)" IEEE 816-822, 1998

4 K. R. Padiyar, "Power Electronics, Drives and Energy Systems for Industrial Growth" 393-398, 1996

5 I. E. Zinn, "PTB testing instructions instrument transformers" 12 : 85-86, 1977

6 "Calibration result of P-5000 current transformer(S/N : 0490961)" NMIA 2005

7 "Calibration report of current transformer (Type : NCD 20000d, S/N : 2/06/0006) in PTB (Reference No: 2.31-06000359, Calibration mark : 2183 PTB 06)"

8 S. S. Kumar, "'A state of the art STATCON for instantaneous VAr compensation and harmonic suppression to enhance power quality' Quality and Security of Electric Power Delivery Systems" 86-90, 2003