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HVDC 시스템에서의 전자파장해 분석 및 조치 방법에 대한 연구
송기상(Keesang Song),박인수(Insoo Park),양원모(Wonmo Yang),이운룡(Unryong Lee) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.11
HVDC(High Voltage Direct Current) system voltage rating is getting higher and so is AC GIS(Gas Insulated Switchgear) system voltage. There is a phenomenon called VFTO(Very Fast Transient Overvoltage) which can be generated from switching of GIS disconnectors and circuit breakers. This produces unwanted effects on elements of HVDC systems such as control systems malfunction, auxiliary power supply unstability and et cetera. This paper describes EMC within HVDC Systems especially ones with GIS environment, related IEC standards, methodology over measurements and analysis of EMI and suggests countermeasures to enforce immunity.