Short-circuit current making is the ability of an electrical switch to close upon the full rated short-circuit current of the switch without being damaged. During such a closing operation, the full current (~tens of kilo amperes) will start to flow at the full rated voltage and a high energy arc will burn across the contact gap. Without the excellent thermal- and insulating properties of SF6, the energy generated by this arc is increased and the contact may fail to re-open because the contact members are welded together.
Previous and ongoing research funded by ABB and the Norwegian Research Council have addressed dielectric insulation, load current interruption and thermal performance for air and air mixtures as alternatives to SF6. Now, we need to initiate R&D work on short-circuit current making in the same gases in order to facilitate a complete alternative to the existing SF6 based MV switchgear product line.
Publications:
- Dorraki, Naghme; Strand, Marius; Niayesh, Kaveh Impact of pre-strike arc on contacts degradation after short cir- cuit current making operation in medium voltage air load break switches 30th International Conference on Electrical Contacts (ICEC 2020)
- Dorraki, Naghme; Niayesh, Kaveh An Experimental Study of Short-Circuit Current Making Operation of Air Medium-Voltage Load Break Switches IEEE Transactions on Power Delivery. 2022, 37 (6), 4646-4656.
- Dorraki, Naghme; Niayesh, Kaveh. Optical investigation on pre-strike arc characteristics in medium-voltage load break switches. Journal of Physics D: Applied Physics 2021
- Dorraki, Naghme; Niayesh, Kaveh. Spectroscopic Investigation of Metal Content in Prestrike Arc During Making Operation in a Low-Current Model Switch. IEEE Transactions on Plasma Science 2020 ;Volum 48.(10) s. 3698-3704
- Jabs, Philipp; Niayesh, Kaveh; Støa-Aanensen, Nina Sasaki. Short-Circuit Making of Medium Voltage Load Break Switches Using a Grid Connected Test Circuit. I: 2018 IEEE International Conference on High Voltage Engineering and Application - ICHVE 2018. IEEE conference proceedings 2018 ISBN 978-1-5386-5086-8
Partners:
- Projectadministration: ABB
- SINTEF
- NTNU
This project is an Innovation projects in business and industry (IPN) with funding from The Research Council of Norway under the ENERGIX-programme.
Innovation projects in business and industry (IPN) and Development projects targeting business and industry players, and including projects that generate knowledge and skills for development of new or improved products or services.