| Title | Computing the Worst Case Scenario for Electric Power System Dynamic Security Assessment |
| Publication Type | Conference Paper |
| Year of Publication | 2019 |
| Authors | Bento, Murilo E. C., Ramos, Rodrigo A. |
| Conference Name | 2019 IEEE Power Energy Society General Meeting (PESGM) |
| Keywords | bifurcation, composability, Cyber-physical systems, Dynamic security assessment, electric power system dynamic security assessment, Hopf Bifurcation, IEEE 39 bus system, LGD, load growth direction, Metrics, operation centers, power system dynamic stability, power system security, power transfer limit, pubcrawl, Resiliency, saddle-node bifurcation, safety operation, voltage stability margin, VSM, worst case scenario |
| Abstract | In operation centers, it is important to know the power transfer limit to guarantee the safety operation of the power system. The Voltage Stability Margin (VSM) is a widely used measure and needs to definition of a load growth direction (LGD) to be computed. However, different definitions of LGD can provide different VSMs and then the VSM may not be reliable. Besides, the measure of this power transfer limit usually is related to the Saddle-Node Bifurcation. In dynamic security assessment (DSA) is highly desirable to identify limit regions where the power system can operate safely due to Hopf (HB) and Saddle-Node (SNB) Bifurcations. This paper presents a modeling of the power system incorporating the LGD variation based on participation factors to evaluate the effects on the stability margin estimation due to HB and SNB. A direct method is used to calculate the stability margin of the power system for a given load direction. The analysis was performed in the IEEE 39 bus system. |
| DOI | 10.1109/PESGM40551.2019.8973643 |
| Citation Key | bento_computing_2019 |
Computing the Worst Case Scenario for Electric Power System Dynamic Security Assessment