The link node represents a link in the water system or other point of interest where a maximum or minimum flow constraint or an allocation priority are assigned. Please note in Pywr, Edges (Links) cannot be assigned flow constraintes and therefore link nodes are often used for this purpose. API Reference.
allocation penalty
The cost per unit flow via the node
Optional
max_flow
The maximum flow constraint on the node
Optional
min_flow
The minimum flow constraint on the node
Optional
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