DocumentCode :
3494833
Title :
SSR mitigation in wind farm connected to series compensated transmission line using STATCOM
Author :
Moharana, Akshaya ; Varma, Rajiv K. ; Seethapathy, Ravi
Author_Institution :
Dept. of Electr. & Comput. Eng., Western Univ., London, ON, Canada
fYear :
2012
fDate :
16-18 July 2012
Firstpage :
1
Lastpage :
8
Abstract :
Series compensation is being increasingly considered for increasing transmission capacity for integration of large wind farms. This paper presents the potential of subsynchronous resonance (SSR) in large squirrel cage induction generator based wind farms connected to the series compensated transmission line. In order to suppress the unstable SSR oscillations, a STATCOM with suitable controller is proposed at the terminal of the wind farm. A detailed linear state space model is developed for the wind farm, transmission system which is a modified IEEE First SSR Benchmark system and the STATCOM. Eigenvalues are calculated for a wide range of wind farm power outputs and series compensation levels. The potential of SSR involving both induction generator effect and torsional interaction is investigated in-depth. The eigenvalues obtained from the linear state space model are validated through the electromagnetic transient simulation carried out with PSCAD/ EMTDC software. It is shown that SSR may potentially occur for large wind farms at higher level of series compensation which can be mitigated by the STATCOM with an appropriate controller.
Keywords :
asynchronous generators; compensation; eigenvalues and eigenfunctions; power system stability; power transmission lines; state-space methods; static VAr compensators; subsynchronous resonance; wind power plants; PSCAD-EMTDC software; SSR mitigation; SSR oscillation suppression; STATCOM; eigenvalues; electromagnetic transient simulation; large wind farm integration; linear state space model; modified IEEE first SSR benchmark system; series compensated transmission line; series compensation levels; squirrel cage induction generator effect; subsynchronous resonance mitigation; torsional interaction; transmission capacity; transmission system; wind farm; Induction generator; STATCOM; Series compensation; Subsynchronous resonance; Wind power;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Machines in Wind Applications (PEMWA), 2012 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
978-1-4673-1128-1
Type :
conf
DOI :
10.1109/PEMWA.2012.6316401
Filename :
6316401
Link To Document :
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