A model reduction technique suitable for optimal controller design in high-order power systems
✍ Scribed by E. Eitelberg; J.C. Balda; R.G. Harley
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 703 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0378-7796
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✦ Synopsis
One of the most difficult problems facing today's power system~control engineers is to find a relatively simple model for a complex physical process in order to apply powerful analysis and design techniques. This paper introduces an existing model reduction technique for high-order systems such as a modern large power plant and improves it by suggesting a new procedure for selecting the state variables of the reduced-order model. It applies this reduction technique to an example consisting of a turbogenerator feeding an infinite bus through a series capacitor compensated transmission line; the turbogenerator is equipped with a shunt reactor at the high voltage side of the stepup transformer in order to damp torsional oscillations. By using this new selection procedure within the model reduction technique a reduced-order model is derived and then used to design the shunt reactor's controller based upon optimal output feedback techniques. Computed transient response results of the full-order system are finally used to validate the reduction technique.