# Rapid Small-Signal Stability Assessment and Enhancement Following Changes in Topology

## Abstract

The paper proposes a scalable and tractable algorithm for dynamic topology optimization of power systems involving changes in branch on/off status, while respecting small-signal stability (SSS) constraints. A procedure for fast updates of the system matrices (in descriptor form) and without additional full matrix inversions is proposed. To additionally reduce the computation time, only critical eigenvalues (right-most or those in a specified damping ratio and frequency range) are calculated. A quadratic optimization approach is proposed for optimized generation re-dispatch to satisfy SSS constraints. The approach is applied to two (medium- and large-scale) real-world test power systems.

- Authors:

- Publication Date:

- Sponsoring Org.:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)

- OSTI Identifier:
- 1211454

- DOE Contract Number:
- DE-AR0000223

- Resource Type:
- Journal Article

- Journal Name:
- IEEE Transactions on Power Systems

- Additional Journal Information:
- Journal Volume: 30; Journal Issue: 3; Journal ID: ISSN 0885-8950

- Country of Publication:
- United States

- Language:
- English

### Citation Formats

```
Saric, AT, and Stankovic, AM.
```*Rapid Small-Signal Stability Assessment and Enhancement Following Changes in Topology*. United States: N. p., 2015.
Web. doi:10.1109/TPWRS.2014.2342494.

```
Saric, AT, & Stankovic, AM.
```*Rapid Small-Signal Stability Assessment and Enhancement Following Changes in Topology*. United States. doi:10.1109/TPWRS.2014.2342494.

```
Saric, AT, and Stankovic, AM. Fri .
"Rapid Small-Signal Stability Assessment and Enhancement Following Changes in Topology". United States. doi:10.1109/TPWRS.2014.2342494.
```

```
@article{osti_1211454,
```

title = {Rapid Small-Signal Stability Assessment and Enhancement Following Changes in Topology},

author = {Saric, AT and Stankovic, AM},

abstractNote = {The paper proposes a scalable and tractable algorithm for dynamic topology optimization of power systems involving changes in branch on/off status, while respecting small-signal stability (SSS) constraints. A procedure for fast updates of the system matrices (in descriptor form) and without additional full matrix inversions is proposed. To additionally reduce the computation time, only critical eigenvalues (right-most or those in a specified damping ratio and frequency range) are calculated. A quadratic optimization approach is proposed for optimized generation re-dispatch to satisfy SSS constraints. The approach is applied to two (medium- and large-scale) real-world test power systems.},

doi = {10.1109/TPWRS.2014.2342494},

journal = {IEEE Transactions on Power Systems},

issn = {0885-8950},

number = 3,

volume = 30,

place = {United States},

year = {2015},

month = {5}

}

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