Subsynchronous torsional behaviour of a hydraulic turbine-generator unit connected to a HVDC system

Author

Choo, Yin Chin ; Agalgaonkar, A.P. ; Muttaqi, K.M. ; Perera, S. ; Negnevitsky, Michael

Author_Institution

Sch. of Electr., Comput. & Telecommun. Eng., Univ. of Wollongong, Wollongong, NSW

fYear

2008

fDate

14-17 Dec. 2008

Firstpage

1

Lastpage

6

Abstract

Torsional interaction is an important phenomenon of concern when a turbine-generator (TG) unit is connected to a series compensated line or a high voltage direct current (HVDC) system. The subsynchronous torsional interaction (SSTI) may have significant impact on the hydraulic system due to the negative damping introduced by HVDC converter controls. This paper investigates the SSTI behaviour of hydro TG units interconnected with a HVDC system for a varying generator-to-turbine inertia ratio. Case studies are carried out by changing the value of firing angle, applying a three-phase fault at the inverter bus and line switching at the rectifier ac system.

Keywords

HVDC power convertors; hydroelectric generators; generator-to-turbine; high voltage direct current system; hydraulic turbine-generator unit; subsynchronous torsional interaction; Australia; Concrete; Conductors; Costs; Earth; HVDC transmission; Power generation economics; Power system economics; Voltage; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Conference, 2008. AUPEC '08. Australasian Universities

Conference_Location

Sydney, NSW

Print_ISBN

978-0-7334-2715-2

Electronic_ISBN

978-1-4244-4162-4

Type

conf

Filename

4813064