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RESEARCH PRODUCT
Transient stability analysis for symmetrical and unsymmetrical faults in mixed three-phase and six-phase power systems
A. SpataroLuigi DusonchetAntonino Augugliarosubject
EngineeringComputer programbusiness.industryEnergy Engineering and Power TechnologySymmetrical componentslaw.inventionElectric admittanceElectric power systemThree-phaseControl theorylawElectronic engineeringmedicineTransient stability analysisElectrical and Electronic Engineeringmedicine.symptomLoad rejectionbusinessTransformerdescription
Abstract The aim of this paper is to analyse the transient stability of a three-phase power system with six-phase lines interconnected by three-phase to six-phase transformers. For these mixed power systems a transient stability analysis is performed under all main types of disturbances (short-circuits, generator and load rejection, line outages), particularly in the case of faults at six-phase buses. A generalized procedure to evaluate transient stability is explained in detail. It is based on the symmetrical components method, which allows one to consider also unsymmetrical faults both at three-phase and six-phase buses. For every possible unsymmetrical short-circuit an equivalent fault admittance is defined and its expression is derived. Furthermore, a program worked out for the calculation is explained and some results of its application to a sample mixed power system are reported.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1989-01-01 | International Journal of Electrical Power & Energy Systems |