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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2404.07415 |
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| _version_ | 1866916228066443264 |
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| author | Junnarkar, Neelay Jensen, Emily Wu, Xiaofan Gumussoy, Suat Arcak, Murat |
| author_facet | Junnarkar, Neelay Jensen, Emily Wu, Xiaofan Gumussoy, Suat Arcak, Murat |
| contents | The problem of maintaining power system stability and performance after the failure of any single line in a power system (an "N-1 contingency") is investigated. Due to the large number of possible N-1 contingencies for a power network, it is impractical to optimize controller parameters for each possible contingency a priori. A method to partition a set of contingencies into groups of contingencies that are similar to each other from a control perspective is presented. Design of a single controller for each group, rather than for each contingency, provides a computationally tractable method for maintaining stability and performance after element failures. The choice of number of groups tunes a trade-off between computation time and controller performance for a given set of contingencies. Results are simulated on the IEEE 39-bus and 68-bus systems, illustrating that, with controllers designed for a relatively small number of groups, power system stability may be significantly improved after an N-1 contingency compared to continued use of the nominal controller. Furthermore, performance is comparable to that of controllers designed for each contingency individually. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_07415 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Grouping of $N-1$ Contingencies for Controller Synthesis: A Study for Power Line Failures Junnarkar, Neelay Jensen, Emily Wu, Xiaofan Gumussoy, Suat Arcak, Murat Systems and Control The problem of maintaining power system stability and performance after the failure of any single line in a power system (an "N-1 contingency") is investigated. Due to the large number of possible N-1 contingencies for a power network, it is impractical to optimize controller parameters for each possible contingency a priori. A method to partition a set of contingencies into groups of contingencies that are similar to each other from a control perspective is presented. Design of a single controller for each group, rather than for each contingency, provides a computationally tractable method for maintaining stability and performance after element failures. The choice of number of groups tunes a trade-off between computation time and controller performance for a given set of contingencies. Results are simulated on the IEEE 39-bus and 68-bus systems, illustrating that, with controllers designed for a relatively small number of groups, power system stability may be significantly improved after an N-1 contingency compared to continued use of the nominal controller. Furthermore, performance is comparable to that of controllers designed for each contingency individually. |
| title | Grouping of $N-1$ Contingencies for Controller Synthesis: A Study for Power Line Failures |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2404.07415 |