Abstract
The impedance-based stability criteria are widely adopted for small-signal stability analysis of power systems. Among them, the determinant-based multi-input multi-output (MIMO) Nyquist criterion is particularly attractive since it simplifies the stability determination process without calculating the eigenvalues of MIMO systems. However, it is found in this letter that the determinant-based Nyquist criterion can potentially result in incorrect stability analysis results with pure inductance models in the MIMO models of the power network. This letter illustrates the issue and its root cause through mathematical derivation and numerical analysis. Then, the issue is demonstrated through an example system, and the corresponding solutions are provided as well.
| Original language | English |
|---|---|
| Pages (from-to) | 899-904 |
| Number of pages | 6 |
| Journal | IEEE Open Journal of Power Electronics |
| Volume | 3 |
| DOIs | |
| State | Published - 2022 |
Bibliographical note
Publisher Copyright:© 2020 IEEE.
Funding
This work was supported in part by the U.S. Department of Energy, Office of Electricity, Advanced Grid Modeling Program under Grant DE-AC05-00OR22725, in part by the Engineering Research Center Shared Facilities provided by the Engineering Research Center Program of the National Science Foundation and the Department of Energy under NSF Award EEC1041877, and in part by the CURENT Industry Partnership Program.
| Funders | Funder number |
|---|---|
| National Science Foundation | EEC1041877 |
| U.S. Department of Energy | DE-AC05-00OR22725 |
Keywords
- Impedance
- modeling
- power system stability
- stability criteria