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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hua Bai Ajjarapu, V. |
| Copyright Year | 2008 |
| Description | Author affiliation: Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA (Hua Bai) |
| Abstract | Relay margin can be applied as a direct tool to evaluate relay status during system disturbances. Based on the practical dynamic security assessment criteria for relay margin, we propose the relay margin ratio and the relay staying time ratio which provide more valuable information than relay margin for relay status evaluation. Motivated by the need of considering relay tripping for contingency evaluations, the most possible tripping severity which incorporates the possibility of relay tripping to evaluate contingency severity is proposed. The relay margin ratio and relay staying time ratio are applied to identify the most critical relays for each contingency based on which the most possible tripping severity is obtained to identify the most critical contingencies in transmission systems. These two inherently related procedures together compose a framework to assess the transmission system vulnerability. Numerical test results are presented using a 23-bus test system. |
| Starting Page | 1 |
| Ending Page | 8 |
| File Size | 555825 |
| Page Count | 8 |
| File Format | |
| ISBN | 9781424419050 |
| ISSN | 19325517 |
| DOI | 10.1109/PES.2008.4596739 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-07-20 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Relays Trajectory Protective relaying Power systems Security Power system stability Power system dynamics vulnerability Relay margin relay staying time contingency severity critical relay critical contingency transmission system |
| Content Type | Text |
| Resource Type | Article |
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