This paper presents the analyzed results of a study on the application of thyristor-controlled conductance in parallel to one series-capacitor segment for suppressing subsynchronous resonance (SSR) that occurs in a series-compensated power system. The IEEE Second Benchmark Model, system-1, which has one turbine-generator set, is taken as a standard model for this study. In order to stabilize all SSR modes in the studied system, a unified approach based on modal control theory is proposed to design a damping controller which is a dynamic output feed-back compensator using shaft speed deviation of the studied generator as a feedback signal. To demonstrate the effectiveness of the proposed control scheme, frequency-domain approach based on eigenvalue analyses and time-domain approach based on non-linear model simulations are performed. The simulated results show that the proposed SSR damping scheme can effectively suppress torsional oscillations of the studied system.
|Number of pages||8|
|Journal||European Transactions on Electrical Power|
|Publication status||Published - 1997 Dec 1|
All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering