The Weight column defines the weight applied to the bus or filter set in the particular hub. Populate it with:
load - weight is defined by current bus load (normalized across the hub), provided the bus has load. For filter sets, only buses defined as load buses will be included.
gen - weight is defined by current generation output at the bus, provided the bus has a generator. For filter sets, only buses defined as generator buses will be included.
a numeric constant to define the weight. Aurora automatically normalizes weights so that they sum to 1 across the same hub. If the sum of all weights in the same hub does not equal 1, then weights are calculated as
Weight (used in calculation) = Weight (number input by user, 'load', or 'gen') / Sum (Weights at all buses in the hub)
blank - bus is ignored and not included in the calculation. Hubs defined as filter sets with Weight = null/blank will be ignored.
NOTE: Entering anything other than strings load or gen, or a numeric constant to define the weight will result in a warning and the bus will be ignored. Aurora also checks whether or not the bus has generation or a load for gen and load specifications. For example, defining the weight for a generator bus with no load as a load weight will result in a warning and the bus will be ignored from the output. Note that load and gen weighting are allowed in loadflow area definitions and buses within the area meeting a threshold requirement that are valid are used (for load-weighting, only load buses are used and for gen-weighting, only gen buses are used).
NOTE: Hubs with load or gen weighted buses will ignore negative generation or demand values and buses with NonConforming Load. However, shunt MW's are included.
Weight Column
For further assistance, please contact Aurora Support.
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