Variable-structure TCSC control in multimachine power systems
- Pacificorp, Portland, OR (United States)
- Bonneville Power Administration, Portland, OR (United States)
- Oregon State Univ., Corvallis, OR (United States). Dept. of Electrical and Computer Engineering
Due to the long distances which separate electric power generation resources from electric load centers, utility planning engineers have been searching for ways to increase transfer capability while maintaining system stability and good damping performance. The traditional solution to this problem has been to reduce transfer impedance by constructing additional transmission lines. However, high cost, very long lead time and environmental concerns become more and more severe restrictions to this option. In recent years, new power-electronic technology has been the basis for a program sponsored by the Electric Power Research Institute known as Flexible AC Transmission System (FACTS). Related devices such as the thyristor-controlled series-capacitor (TCSC), thyristor-controlled braking-resistor (TCBR) and thyristor-controlled static-Var-compensator are appropriately linked to powerful network control measures because they are able to respond very quickly to meet system demands under transient conditions. To utilize this capability, appropriate control for the thyristors must be developed. This task becomes a big challenge for control experts because the power system is very large scale geographically, highly nonlinear and of variable structure. In this paper, the multimachine power system model with TCSC is derived; then the control law is designed. Using the Bonneville Power Administration transient stability program, the variable-structure TCSC control is tested in a 54-bus system.
- OSTI ID:
- 389977
- Report Number(s):
- CONF-960426-; TRN: IM9646%%262
- Resource Relation:
- Conference: 58. annual meeting of the American power conference, Chicago, IL (United States), 9-11 Apr 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the American Power Conference. Volume 58-II; McBride, A.E. [ed.]; PB: 886 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Flexible ac transmission systems (FACTS): Scoping study
The application of dynamic programming in a discrete supplementary control for transient stability enhancement of multimachine power systems