We present a black-box model of miniature circuit breakers having a realistic physical background. In compliance with basic physics, engineering know-how and magneto-hydrodynamics arc simulations, two sets of differential-algebraic equations are derived to model air plasma chemical dynamics and its interaction with breaker's physical environment (chamber shape, splitter plates, arc traveling). A numerically efficient and accurate electrical model at the breaker terminals is proposed. Its behavior is shown by comparing simulations with short-circuit experiments. Applications are at system level, including simulation of networks with several breakers, such as multiphase switching transients, selectivity, and coordination with fuses, other breakers and surge protection devices.

Circuit level model of miniature circuit breakers

Bizzarri F.;Brambilla A. M.;
2018-01-01

Abstract

We present a black-box model of miniature circuit breakers having a realistic physical background. In compliance with basic physics, engineering know-how and magneto-hydrodynamics arc simulations, two sets of differential-algebraic equations are derived to model air plasma chemical dynamics and its interaction with breaker's physical environment (chamber shape, splitter plates, arc traveling). A numerically efficient and accurate electrical model at the breaker terminals is proposed. Its behavior is shown by comparing simulations with short-circuit experiments. Applications are at system level, including simulation of networks with several breakers, such as multiphase switching transients, selectivity, and coordination with fuses, other breakers and surge protection devices.
2018
arc root; arc splitting; black-box model; Circuit breaker; circuit simulation; plasma model; system level analysis
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1118204
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