Blackstart and System Restoration Simulationsusing Power World
Simulator

[attachment=18087]

Operations Applications
• Blackstart and Restoration Procedure
assessment and review
• System Operator Response Training
• These are two very distinct applications
even though both are related to system
restoration


NERC System Restoration Guidelines
• Consideration should be given to connecting shunt reactor devices to
help stabilize generating units being brought on line.
• Transmission corridors for supplying start-up power should be
identified and switching procedures determined, taking extra care to
isolate damaged facilities.
• Units without blackstart capability should be prepared to begin the
start-up process when start-up power becomes available.
• Transmission system corridors to support the start-up process should
be established but not energized until needed.
• As units with blackstart capability come on line, energize appropriate
transmission system corridors supplying start-up power for units that
are ready to return to service.



PowerWorld Simulator
• Simulator is run in the “Simulation” mode
providing for chronological progression of
load flows as actions are taken on the
system
• Lines are monitored for overloads
• Contouring is used to monitor voltage levels


System Reconstruction
• As the system is reconstructed, the island
swing bus will pick up load.
• Other generation must be dispatched to
keep the swing bus from exceeding its
capacity.
• Load must be added in small steps to
prevent collapse of the system



System Operator Response Training
• Scenarios are created for which no specific
restoration procedure exists.
• There are typically several right and wrong ways
to restore the system
• Operators use NERC and company guidelines to
re-establish load and generation and resynchronize
where necessary
• Additional system events are thrown at the
operators in the course of re-establishing the
system



PowerWorld Simulator as a Power System Simulator
• EMS simulators can be in high demand. PowerWorld
Simulator can serve as a second simulator for certain
scenarios.
• As the use of Retriever in the control room becomes more
widespread, Simulator becomes more valuable in training
operators and engineers in the use of PowerWorld graphics
in real time. Simulator can be used to develop displays,
voltage contouring and line monitoring for Retriever.
• Simulator can be used to identify early warning graphical
“signatures” for potentially damaging events so that these
events can be avoided.