A Novel Control Strategy for Subsynchronous Resonance Mitigation Using SSSC

Author

Bongiorno, Massimo ; Ängquist, Lennart ; Svensson, Jan

Author_Institution

Chalmers Univ. of Technol., Goteborg

Volume

23

Issue

2

fYear

2008

fDate

4/1/2008 12:00:00 AM

Firstpage

1033

Lastpage

1041

Abstract

In this paper, a novel control strategy for subsynchronous resonance (SSR) mitigation using a static synchronous series compensator will be presented. SSR mitigation is obtained by increasing the network damping only at those frequencies that are critical for the turbine-generator shaft. This is achieved by controlling the subsynchronous component of the grid current to zero. Using the IEEE first benchmark model, the effectiveness of the proposed control algorithm when mitigating SSR due to torsional interaction and torque amplification effect will be shown.

Keywords

power grids; static VAr compensators; torque; turbines; turbogenerators; IEEE first benchmark model; grid current subsynchronous component; network damping; static synchronous series compensator; subsynchronous resonance mitigation; torque amplification effect; torsional interaction; turbine-generator shaft; Damping controller; series compensation; static synchronous series compensator (SSSC); subsynchronous resonance (SSR); torsional oscillation;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2007.908751

Filename

4389749