Abstract
This paper deals with the secure Optimal Transmission Switching (OTS) problem in situations where the TSO is forced to accept the risk that some contingencies may result in the de-energization of parts of the grid to avoid the violation of operational limits. This operational policy, which mainly applies to subtransmission systems, is first discussed. Then, a model of that policy is proposed that complements the classical MILP model of the N-1 secure OTS problem. It comprises a connectivity and notably a partial grid loss analysis for branch outage contingencies. Finally, its application to the IEEE 14- bus system is presented. Solutions similar to those observed in operation are reached by the algorithm, notably revealing the preventive-openings-cascade phenomenon.
| Original language | English |
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| Title of host publication | 2025 IEEE PowerTech Kiel |
| Publisher | IEEE |
| Number of pages | 6 |
| Publication status | E-pub ahead of print - 2025 |
| Event | 2025 IEEE PowerTech Kiel - Kiel University, Kiel , Germany Duration: 29 Jun 2025 → 3 Jul 2025 Conference number: 16 |
Conference
| Conference | 2025 IEEE PowerTech Kiel |
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| Country/Territory | Germany |
| City | Kiel |
| Period | 29/06/25 → 3/07/25 |