부분방전검출 신뢰도 향상을 위한 UHF 센서개선 및 성능검증

다국어 초록 (Multilingual Abstract)

GIS(Gas Insulated Switchgear) is important power apparatus which have strong dielectric strength, supply electric power and is a part of the power system. Most substation type is configured as GIS. Recently, because of continuous increasement of GIS demand resulted from high quality & big capacity of electric power, the necessity of the preventive & diagnosis system is being expanded gradually. GIS partial discharge occurred on the UHF band is detected effectively by the method to IEC 60270 that recommend to be able to detect the apparent minimum discharge, 5 pC. Additionally, the UHF sensor should be installed to detect PD signal if Partial discharge signal, 5 pC occur in every part of GIS. Currently PD diagnosis system applying UHF sensor for GIS with various voltage level like 154 kV, 345 kV, 765 kV have been operated. And it is necessary to measure and analyze insulation breakdown phenomenon of inside GIS exactly. In this paper, we proposed Fat-dipole patch UHF sensor that is developed and more sensitive, excellent wide-range characteristic than the exising UHF sensor. And we performed KERI (Korea Electrotechnology Research Institute) reference test, which showed the excellent result for the all tests.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 본론
• 3. 결론
• References

참고문헌 (Reference)

1 송원표, "가스절연 개폐장치의 내부절연 성능검증을 위한 UHF 협대역 부분방전 진단법" 대한전기학회 54 (54): 414-420, 2005

2 "http://www.rfdb.com/rfdb/vswr.htm"

3 Mun-Gyu Choi, "UHF Sensor Location Optimization for Partial Discharge Signals Detection Method" Trans" KIEE 63 (63): 2014

4 Jae-Ryong Jung, "Research of UHF Sensor Optimal Arrangement for 25.8kV C-GIS" 2010

5 "Power Office Total Information System" Korea Electric Power Cooperation 2013

6 Jin-yeol Yoon, "Partial Discharge Detection of GIS Technology Research. (Final Report)" 2002

7 이승민, "GIS내부의 부분방전신호 감도개선 및 주파수변환기법에 의한 GIS UHF Sensor 모듈의 외부노이즈차폐기법에 관한 연구" 대한전기학회 59 (59): 728-732, 2010

8 Taesik Choi, "Development of the On-line iPDM System for the PD Diagnosis for 25.8kV C-GIS" 2008