SUPPRESSION OF TORSIONAL OSCILLATIONS USING STATIC PHASE SHIFTERS

• Main Authors: Ming-Yang Huang, 黃明陽
• Other Authors: Ching-Lien Huang, Li Wang
• Format: Others
• Language: zh-TW
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/39774203950275925334

碩士 === 國立成功大學 === 電機工程研究所 === 81 === This thesis researches the application of static phase shifters on the suppression of torsional oscillations occurring in a power system containing series-capacitor compensation. The IEEE Second Benchmark Model, system-1 is employed to investigate the benefits of the utiliza- tion of modulated generator active power, by injecting a quadrature phase voltage in the system, in suppressing unstable SSR modal interactions. In order to damp all the torsional modes in different operating conditions, a unified approach based on modal control theory is used for the design of a phase-shifter controller. For demonstrating the effectiveness of the damping en- hanced by the proposed scheme, eigenvalue analysis for different operating conditions and sensitivity analysis for controller parameters are performed. In addition, dynamic responses of the nonlinear system under disturb- ance conditions are also carried out. It can be conclud- ed from the simulation results that the proposed phase- shifter control scheme can effectively suppress the tor- sional oscillations.