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PowerWorld Topology Processing
The PowerWorld Topology Processing (TP) tool effectively bridges
EMS and planning models of the power system. It allows the quick and
automated creation of a power flow case from real-time or
historical EMS data. This opens to the real-time operations
environment all of PowerWorld Simulator's exceptional analysis and
visualization tools, such as Available Transfer Capability (ATC),
Optimal Power Flow (OPF), and more.
Traditionally, power flow models exported from Energy Management
Systems (EMS) are not very useful for offline analysis because the
bus-branch model topology varies with circuit breaker states. Bus
numbers and transmission topology may change every time a new real-time
model is exported. Off-line analysis data structures that assume
consistent bus numbering and transmission topology, such as
contingency definitions, are difficult or impossible to use in this
environment. PowerWorld TP solves this problem by utilizing a
consistent full
topology node-breaker model on the PowerWorld platform. Model
reduction is performed internally, and the user may view results on
either the node-breaker (full system) or bus-branch (study system)
models. Analysts can compile and import supplemental data such as flowgate definitions or generator cost models from spreadsheets or
PowerWorld auxiliary (aux) files, based on the full topology model.
Such files will remain compatible with the real-time power flow model
regardless of breaker status and topology of the study system. Updates
must only be performed whenever the underlying node-breaker topology
in the EMS changes.
More information and illustrations are provided in
PowerWorld Topology Processing and Real-Time Applications.
Block Diagram of Data Flow using PowerWorld Retriever Topology Processing to Build a
Power Flow Model from Real-Time Data.
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