Environmental Compatible Circuit Breaker Technologies

Uhrlandt, Dirk

Environmental Compatible Circuit Breaker Technologies - Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute 2021 - 1 electronic resource (156 p.)

Open Access

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.


Creative Commons


English

books978-3-0365-0385-1 9783036503844 9783036503851

10.3390/books978-3-0365-0385-1 doi


Technology: general issues

vacuum circuit breaker double break prestrike characteristics vacuum interrupter prestrike gap gaseous breakdown SF6 CO2 surface roughness statistical enlargement laws vacuum arc DC circuit breaker current interruption magnetic field plasma physics zero-crossing circuit breaker switching arc optical emission spectroscopy ablation current zero SF6 alternative gases PTFE optical absorption spectroscopy Swan bands CuF hybrid dc circuit breaker vacuum arc commutation solid-state switch vacuum arc voltage air arc plasma Thomson actuator magnetohydrodynamic simulations fast switch optical diagnostics

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