Transmission System Expansion Planning Considering the Risk of Systemic Failures in Electric Power Grids
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Date
2020
Publication Type
Conference Paper
ETH Bibliography
yes
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Abstract
This paper proposes a methodology for transmission system expansion planning (TEP) of electric power grids that simultaneously minimizes the capital costs and risk of systemic failures. The developed tool relies on AC power flow based cascading failure simulation, designed to assess the system resilience in withstanding propagating outages. The cost of expansion and the risk of cascading outages are conflicting objectives. Therefore, the TEP problem is formulated as a simulation-based multi-objective optimization problem that provides a set of non-dominated Pareto optimal solutions. This set of solutions proves decision makers with multiple expansion options, varying from the best risk improvement option with highest cost, to the least risk improvement solution with the lowest costs. As an optimizer, we use Non-dominated Sorting Genetic Algorithm II (NSGAII), suitable for non-linear and non-convex multi-objective optimization problems. The developed tool is applied on the IEEE 118-bus system and evaluated against previous work presented in the scientific literature. The results demonstrate the robustness of the method in providing risk-aware expansion planning solutions.
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Publication status
published
Book title
Proceedings of the 30th European Safety and Reliability Conference and the 15th Probabilistic Safety Assessment and Managaement Conference
Journal / series
Volume
Pages / Article No.
4051
Publisher
Research Publishing Services
Event
30th European Safety and Reliability Conference and 15th Probabilistic Safety Assessment and Management Conference (ESREL2020 PSAM15)
Edition / version
Methods
Software
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Date collected
Date created
Subject
Power system; Transmission network; Expansion planning; Cascading failures; Optimization; Risk
Organisational unit
09452 - Sansavini, Giovanni / Sansavini, Giovanni