Summary
Perfluoromethyl vinyl ether (PMVE) mixed with CO₂ is a promising insulating gas for highvoltage gas circuit breakers (GCBs) due to its low Global Warming Potential and favorable dielectric properties. This paper presents a calculation-based method to evaluate and improve the short-line fault (SLF) interruption performance of a 145kV GCB using a PMVE/CO2 mixture.
Read more Read lessArc plasma behavior is modeled by considering thermodynamic and transport properties, radiative heat transfer, and nozzle ablation effects. The arc conductance evaluated 200 ns before current zero, defined as G200, is adopted as the primary performance parameter. To achieve sufficient interruption performance with minimal design modifications to an existing SF6 GCB, only the nozzle geometry and contact radius are modified based on the calculated G200 values.
Interruption tests conducted in accordance with IEC standards confirm successful interruption under both L90 and L75 conditions. These results validate the proposed calculation method and demonstrate the technical feasibility of applying the PMVE/CO2 mixture to high-voltage GCBs.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | A3_11725_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Korea, Republic of (South Korea) |
| Study committees | |
| File size | 955 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
OH Yeon Ho - KERI; JANG Hyun Jae - KERI; SONG Ki Dong - KERI
Keywords
SF6 alternative, Arc plasma, G200, Perfluoromethyl vinyl ether, PMVE, 145kV GCB, Gas circuit breaker, GWP
