Simulation of Electric Arcing in HVDC Relays During a Short Circuit Situation
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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Simulation of Electric Arcing in HVDC Relays During a Short Circuit Situation. / Ewuntomah, Crispin Masahudu; Oberrath, Jens.
Electrical Contacts 2019 - Proceedings of the 65th IEEE Holm Conference on Electrical Contacts, Holm 2019. IEEE - Institute of Electrical and Electronics Engineers Inc., 2019. S. 257-261 8923689 (Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts; Band 65).Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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RIS
TY - CHAP
T1 - Simulation of Electric Arcing in HVDC Relays During a Short Circuit Situation
AU - Ewuntomah, Crispin Masahudu
AU - Oberrath, Jens
N1 - Conference code: 65
PY - 2019/9
Y1 - 2019/9
N2 - Electric arcing in high voltage direct current (HVDC) relays is an undesirable phenomenon that many manufacturers seek to fully understand and control. In short circuit situations, the rapid increase of the current causes the arcs to excessively heat, melt, boil, and vaporize the contact spots of the relays. This situation may end in explosion of the relays. In this work, the arcing process of such a short circuit situation is simulated based on time dependent current and voltage measurements at the relay [3]. To analyse the electric arcs in detail, and estimate the resulting vaporization from the increasing current, a multiphysics model which couples current flow, fluid flow, and heat transfer, based on balance equations, is established in COMSOL. The simulation results will show the electric arc formation and time dependent arc evolution. It is expected that; the temperatures of the arcs are high enough to melt, boil, and vaporize the contact materials, which has to be quantified to understand the pressure increase within the relay chamber.
AB - Electric arcing in high voltage direct current (HVDC) relays is an undesirable phenomenon that many manufacturers seek to fully understand and control. In short circuit situations, the rapid increase of the current causes the arcs to excessively heat, melt, boil, and vaporize the contact spots of the relays. This situation may end in explosion of the relays. In this work, the arcing process of such a short circuit situation is simulated based on time dependent current and voltage measurements at the relay [3]. To analyse the electric arcs in detail, and estimate the resulting vaporization from the increasing current, a multiphysics model which couples current flow, fluid flow, and heat transfer, based on balance equations, is established in COMSOL. The simulation results will show the electric arc formation and time dependent arc evolution. It is expected that; the temperatures of the arcs are high enough to melt, boil, and vaporize the contact materials, which has to be quantified to understand the pressure increase within the relay chamber.
KW - Engineering
KW - high voltage
KW - direct current
KW - electric relay
KW - electric arc
KW - short circuit
KW - electrical contacts
KW - plasma arcs
UR - http://www.scopus.com/inward/record.url?scp=85077695026&partnerID=8YFLogxK
U2 - 10.1109/HOLM.2019.8923689
DO - 10.1109/HOLM.2019.8923689
M3 - Article in conference proceedings
SN - 978-1-7281-3684-4
SN - 978-1-7281-3685-1
T3 - Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
SP - 257
EP - 261
BT - Electrical Contacts 2019 - Proceedings of the 65th IEEE Holm Conference on Electrical Contacts, Holm 2019
PB - IEEE - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE Holm Conference on Electrical Contacts - IEEE Holm 2019
Y2 - 15 September 2019 through 18 September 2019
ER -