Conference paper
A Method to Determine the Distance to the Critical Oscillatory Stability Limit in Terms of Active Power Injections
Department of Electrical Engineering, Technical University of Denmark1
Center for Electric Power and Energy, Centers, Technical University of Denmark2
Electric Power Systems, Center for Electric Power and Energy, Centers, Technical University of Denmark3
Norwegian University of Science and Technology4
This article presents a method to derive meaningful margins that provide information regarding the distance to critical oscillatory stability limits. The proposed method relies on modal torque concepts which allows to reduce the eigenvalue problem to a problem involving only generator torque and speed oscillations.
The reduced problem size and the sparsity of the involved matrices makes it suitable for the application to large power systems. The algorithm relies on deriving the first order eigenvalue sensitivities in respect to perturbations of generator machine active power injections based on power flow quantities.
The viability of the method is demonstrated at the example of the Nordic power system, showing the capability of determining critical operation well away from the actual critical stability limit.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2021 |
| Pages: | 1-6 |
| Proceedings: | 2021 IEEE Madrid PowerTech |
| ISBN: | 1665435976 , 9781665435970 , 1665411732 and 9781665411738 |
| Types: | Conference paper |
| DOI: | 10.1109/PowerTech46648.2021.9495002 |
| ORCIDs: | Muller, Daniel , Johannsson, Hjortur and Nielsen, Arne Hejde |
Eigenvalue sensitivity Power system oscillations Power system stability Small signal stability
Generators Nordic power system Perturbation methods Power system dynamics Real-time systems Sensitivity Torque critical oscillatory stability limit eigenvalue problem eigenvalue sensitivity eigenvalues and eigenfunctions generator machine active power injections generator torque involved matrices load flow matrix algebra modal torque concepts oscillations power flow quantities power system oscillations power system stability small signal stability speed oscillations torque control
