03507nam 2200745z- 450 991055772650332120231214132955.0(CKB)5400000000046059(oapen)https://directory.doabooks.org/handle/20.500.12854/76336(EXLCZ)99540000000004605920202201d2021 |y 0engurmn|---annantxtrdacontentcrdamediacrrdacarrierEnvironmental Compatible Circuit Breaker TechnologiesBasel, SwitzerlandMDPI - Multidisciplinary Digital Publishing Institute20211 electronic resource (156 p.)3-0365-0384-6 3-0365-0385-4 Recent research and development in the field of high-current circuit breaker technology are devoted to meeting two challenges: the environmental compatibility and new demands on electrical grids caused by the increasing use of renewable energies. Electric arcs in gases or a vacuum are the key component in the technology at present and will play a key role also in future concepts, e.g., for hybrid and fast switching required for high-voltage direct-current (HVDC) transmission systems. In addition, the replacement of the environmentally harmful SF6 in gas breakers and gas-insulated switchgear is an actual issue. This Special Issue comprises eight peer-reviewed papers, which address recent studies of switching arcs and electrical insulation at high and medium voltage. Three papers consider issues of the replacement of the environmentally harmful SF6 by CO2 in high-voltage gas circuit breakers. One paper deals with fast switching in air with relevance for hybrid fault current limiters and hybrid HVDC interrupters. The other four papers illustrate actual research on vacuum current breakers as an additional option for environmentally compatible switchgear; fundamental studies of the vacuum arc ignition, as well as concepts for the use of vacuum arcs for DC interruption.Technology: general issuesbicsscvacuum circuit breakerdouble breakprestrike characteristicsvacuum interrupterprestrike gapgaseous breakdownSF6CO2surface roughnessstatistical enlargement lawsvacuum arcDC circuit breakercurrent interruptionmagnetic fieldplasma physicszero-crossingcircuit breakerswitching arcoptical emission spectroscopyablationcurrent zeroSF6 alternative gasesPTFEoptical absorption spectroscopySwan bandsCuFhybrid dc circuit breakervacuum arc commutationsolid-state switchvacuum arc voltageair arc plasmaThomson actuatormagnetohydrodynamic simulationsfast switchoptical diagnosticsTechnology: general issuesUhrlandt Dirkedt1309865Uhrlandt DirkothBOOK9910557726503321Environmental Compatible Circuit Breaker Technologies3029678UNINA