| Title |
SF_6 Emission Characteristics at High Voltage Equipments in use-phase Stage |
| Authors |
박정주(Park, Jung-Ju) ; 조연행(Cha, Yeun-Haeng) |
| Keywords |
Sulfur hexafluoride(SF_6) ; SF_6 life cycle ; High voltage equipment |
| Abstract |
Sulfur hexafluoride(SF_6) is a gaseous dielectric used in high voltage electrical equipment such as an insultor or arc quenching medium in the transmission and distribution of electricity. however, SF_6 is one of the greenhouse gases(GHG) with a global warming potential that is 23,900 times greater than that of carbon dioxide(CO_2). for this reason, SF_6 emissions in electric equipment shall be controlled to reduce GHG and improve cost-effective use of SF_6 for economical benefits. Until recently there has not been any investigation on SF_6 emission characteristics and inventory in Korea. To understand emission characteristics during the use-phase, the scope of this study was limited to the following closed pressure system equipment from 10 substations in Korea. This study highlights (1) the investigation of sampling/analysis methodology for SF_6 emissions in high voltage equipment, (2) the estimation of SF_6 emissions in the use-phase, and (3) the comparison between the emission ratio and the mass-balance applied to inventory study. According to this study, the majority of emissions were related to electric equipment nameplates and the rest of the emissions were related to the handling of SF_6 during operations. from this result, emission ratios estimated from this study were similar; GIS was 14% and GCB was 13%, as maintenance process conditions were the same as manual process conditions for both equipment. |