Frequency support among asynchronous AC systems through VSCs emulating power plants

[en] This paper proposes a new control scheme for the Voltage Source Converters (VSCs) of a High Voltage Direct Current (HVDC) grid connecting asynchronous AC systems, so that the latter can mutually support their frequencies after a disturbance. The scheme involves no communication between VSCs. It is activated upon detection of a significant frequency deviation, with the possibility to limit the support requested from other AC systems. It relies on an integral control enforcing the frequency droop characteristics (of classical speed governors), in addition to the voltage-droop control of VSCs. The controller is tuned to emulate the response of a power plant, while avoiding excessive transients in the HVDC system, and limiting the impact on the other AC systems.

Disciplines :

Electrical & electronics engineering

Author, co-author :

Papangelis, Lampros ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation

Guillaud, Xavier

Van Cutsem, Thierry ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation

Language :

English

Title :

Frequency support among asynchronous AC systems through VSCs emulating power plants

Publication date :

February 2015

Event name :

11th IET Conference on AC and DC Power Transmission

Event organizer :

The Institution of Engineering and Technology - IET

Event place :

Birmingham, United Kingdom

Event date :

10-12 February 2015

Audience :

International

Main work title :

Proc. 11th IET Conference on AC and DC Power Transmission

Pages :

9 p.

Peer reviewed :

Peer reviewed

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique

Available on ORBi :

since 13 January 2015

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