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The WINDY domain – a challenging real-world application of integrated planning and scheduling

Pattison, David and Xie, Wenbin and Quail, Francis (2013) The WINDY domain – a challenging real-world application of integrated planning and scheduling. In: Proceedings of the Twenty-Third International Conference on Automated Planning and Scheduling. Association for the Advancement of Artificial Intelligence (AAAI). ISBN 9781577356097

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Many renewable sources of energy can harness greater uptime and power output when located in remote and potentially hostile locations. One example of this is wind power, wherein turbines positioned at offshore locations can experience higher and more sustained windspeeds than their onshore counterparts. However, these traits also lead to increased load and degradation upon components, which in turn means that regular maintenance is required. While onshore maintenance costs are relatively trivial, the costs associated with offshore maintenance can be several orders-ofmagnitude greater. Traditionally, the scheduling of these repairs is performed by hand using a set of pre-determined plans for specific faultcategories (e.g. trivial/minor/major component replacement). This paper formulates this problem as a PDDL domain which encapsulates all of the individual pre-defined plans in a single representation, such that multiple levels of response can be integrated in a single plan. The domain presented is complex in that it contains not only numeric and temporal planning aspects, but that a subset of the domain is heavily geared towards pure scheduling. We include performance results on how a state-of-the-art planner performs on various example scenarios.