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Stability Analysis of Two-Terminal VSC-HVDC Systems using the Net-Damping Criterion

Georgios Stamatiou (Institutionen för energi och miljö, Elteknik) ; Massimo Bongiorno (Institutionen för energi och miljö, Elteknik)
IEEE Transactions on Power Delivery (0885-8977). Vol. 31 (2016), 4, p. 1748-1756.
[Artikel, refereegranskad vetenskaplig]

This paper performs a frequency-domain investigation in two-terminal voltage-source-converter–HVDC (VSC–HVDC) systems, focusing on the use of the net-damping criterion to investigate poorly damped conditions and closed-loop stability. The system is represented as a feedback interconnection of two subsystems, defined in this paper as: 1) a dc-grid input impedance and 2) a VSC input admittance. The damping characteristics of the two subsystems are defined at critical frequencies and their separate contribution to the closed-loop stability is assessed by the net-damping criterion. A variety of study cases demonstrates the effectiveness of the latter as a powerful tool for stability investigation, while a correlation has been derived between the net-damping value and the damping factor of the poorly damped poles of the system.

Nyckelord: DC-network stability, frequency-domain analysis, net damping, poor damping, voltage-source converter– high-voltage direct current (VSC-HVDC)



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Denna post skapades 2016-01-13. Senast ändrad 2016-10-16.
CPL Pubid: 230529

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik

Ämnesområden

Energi
Reglerteknik
Elektroteknik
Elkraftteknik

Chalmers infrastruktur