An Integrated Boundary Protection Scheme for Power Transmission Line Systems

摘要

In this paper the performance of a synchronous generator – SVC system is evaluated usingnIndividual Channel Analysis and Design (ICAD), a control-oriented framework suitable for smallsignalnstability assessments. The SVC is already a mature piece of technology, which has becomenvery popular for providing fast-acting reactive power support. The great benefits of ICAD inncontrol system design tasks are elucidated. Fundamental analysis is carried out explaining thengenerator dynamic behavior as affected by the SVC. A multivariable control system design fornthe system is presented, with particular emphasis in the closed-loop performance and stability andnstructural robustness assessment. It is formally shown in the paper that although the addition ofnthe SVC with no damping control loop does not improve the dynamic of the system, its inclusionnis very effective in enhancing voltage stability. Moreover, ICAD analysis shows that with the usenof the SVC the dynamical structure of the system is preserved and no considerable coupling ornadverse dynamics are added to the plant.