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International Society of Science and Applied Technologies |
| Reliability Evaluation for Identifying Critical Infrastructure in a Multistate Power Grid | ||||
| Author | Ting-Hau Shih
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| Co-Author(s) | Yi-Kuei Lin
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| Abstract | A reliability-based evaluation method developed in this study for assessing the grid reliability of the power grid (PG) and identifying critical infrastructure. Given that the infrastructures in the PG, including power plants, substations, and transmission lines, operate at multiple capacity levels, the PG is constructed as a multistate power grid (MPG).The grid reliability is defined as a performance index to measure the capability of the MPG to meet demand. To calculate grid reliability, an algorithm is proposed based on the concept of lower capacity vectors, which enables an effective determination of the probability that the MPG can satisfy demand. Additionally, an infrastructure importance measurement method is introduced to systematically evaluate the impact of individual infrastructure failures on grid reliability by considering the scenario of complete infrastructure failures. The proposed method is applied to a real instance in southeastern Taiwan, providing feasibility for the system manager to evaluate the MPG grid reliability and identify the critical infrastructures that significantly influence MPG performance.
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| Keywords | multistate power grid (MPG); grid reliability; lower capacity vector; infrastructure importance measurement | |||
| Article #: RQD2025-251 | ||||
Proceedings of 30th ISSAT International Conference on Reliability & Quality in Design |