부분방전 모니터링에 의한 온라인 절연 진단

• Published in: 전기학회 논문지 P권, 57(1) Vol. 57; no. 1; pp. 60 - 64
• Main Authors: 최용성, 오용, 김향곤, 최충석, 이경섭, Choi, Yang-Sung, Oh, Yong, Kim, Hyang-Kon, Choi, Chung-Seog, Lee, Kyung-Sup
• Format: Journal Article
• Language: English; Korean
• Published: 대한전기학회 01.03.2008
• Subjects: 전기공학; Partial discharges; Rotating machines; Power transformers; Monitoring; Cables; Gas-insulated switchgear
• ISSN: 1229-800X; 2586-7792

The paper considers the relation between on-line monitoring and diagnostics on the one hand and high-voltage (HV) withstand and partial discharge (PD) on-site testing on the other. HV testing supplies the basic data (fingerprints) for diagnostics. In case of warnings by on-line diagnostic systems, off-line withstand and PD testing delivers the best possible information about defects and enables the classification of the risk. Because alternating voltage (AC) is the most important test voltage, the AC generation on site is considered. Frequency tuned resonant (ACRF) test systems are best adapted to on-site conditions. They can be simply combined with PD measuring equipment. The available ACRF test systems and their application to electric power equipment -from cable systems to power transformers - is described.