Abstract
As societies are becoming more dependent on the power grids, the security issues and blackout threats are more emphasized. This paper proposes a new graph model for online visualization and assessment of power grid security. The proposed model integrates topology and power flow information to estimate and visualize interdependencies between the lines in the form of line dependency graph (LDG) and immediate threats graph (ITG). These models enable the system operator to predict the impact of line outage and identify the most vulnerable and critical links in the power system. Line Vulnerability Index (LVI) and Line Criticality Index (LCI) are introduced as two indices extracted from LDG to aid the operator in decision making and contingency selection. This package can be useful in enhancing situational awareness in power grid operation by visualization and estimation of system threats. The proposed approach is tested for security analysis of IEEE 30-bus and IEEE 118-bus systems and the results are discussed.
| Original language | English (US) |
|---|---|
| Title of host publication | 2017 19th International Conference on Intelligent System Application to Power Systems, ISAP 2017 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781509040001 |
| DOIs | |
| State | Published - Oct 18 2017 |
| Event | 19th International Conference on Intelligent System Application to Power Systems, ISAP 2017 - San Antonio, United States Duration: Sep 17 2017 → Sep 20 2017 |
Other
| Other | 19th International Conference on Intelligent System Application to Power Systems, ISAP 2017 |
|---|---|
| Country/Territory | United States |
| City | San Antonio |
| Period | 9/17/17 → 9/20/17 |
Keywords
- blackout
- cascading outages
- graph model
- power grid security assessment
ASJC Scopus subject areas
- Control and Optimization
- Artificial Intelligence
- Energy Engineering and Power Technology
- Computer Networks and Communications