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Validation
of data should be performed at each step in a process, and “flags” should be
included with the data to indicate the “quality” of the data. This quality flag
will normally have to be carried forward with the data to each additional step,
with additional validation included whenever feasible and pertinent. For
instance, power flow data from field equipment may only be validated for
reasonability within a substation, but compared with other data for bias or
inconsistency in a state estimation process at a control center.
Validation
of data is not a technology per se, but is a theme that should run through all
system designs.
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