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access icon openaccess Commutation failure caused by AC filter switching In HVDC system

This is an open access article published by the IET under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/)
Received 29/08/2018, Accepted 19/09/2018, Published 23/10/2018

Switching AC filter may cause harmonic impact, which may lead to commutation failure of HVDC system. Here, the commutation failure mechanism of HVDC system caused by AC filter switching is studied. The circuit and mathematical model of the transient process simulation of filter switching are established, and the time-domain solution of the overvoltage of each filter including voltage reduction and distortion is given. The commutation failure mechanism of HVDC system is analysed based on the commutation failure analysis method of harmonic voltage and time area. The simulation results verify the effectiveness of the mechanism analysis of commutation failure caused by AC filter switching in HVDC system.

Inspec keywords: power transmission reliability; power system transients; HVDC power transmission; distortion; commutation; power harmonic filters; time-domain analysis; failure analysis

Other keywords: time area; mathematical model; commutation failure analysis method; commutation failure mechanism; voltage reduction; time-domain solution; voltage distortion; HVDC system; AC filter switching; harmonic voltage

Subjects: d.c. transmission; Reliability; Other power apparatus and electric machines; Mathematical analysis

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