Determination of restoration schemes
The determination of restoration schemes consists of two parts:
(1) determination of restoration goals and (2) path searching
method. These two parts are described in the following two subsections
respectively.
Three-stage restoration strategy
After a blackout, the whole system should be sectionalized into
several subsystems to accelerate restoration process. The sectionalization
is based on the distribution of black-start units, technical
properties of units, network structure and management scope
of regional power supply companies. Each subsystem should contain
at least one black-start unit, one unit to be restarted, one
feasible restoration path and one reliable synchronization point
with other subsystems. And each subsystem should have adequate
measures and capacities for controlling the voltage and frequency
of the system