Restoration

As the powerflow module interacts with the reliability module, portions of the system may become isolated. The restoration object attempts to do feeder reconfiguration to close the isolated sections back into the system. The restoration object requires reliability or some reliability-like actions to function properly, as well as the fault_check object. The restoration object only works with the NR solver method at this time.

A restoration object can be implemented as:

object restoration {
    name RestorVal;
    reconfig_attempts 3;
    reconfig_iteration_limit 5;
    populate_tree TRUE;
    }

Restoration Parameters

Properties

restoration does not declare inherited parent classes.

The I/O column indicates whether a property is user-settable input (I), simulation-computed output (O), or both (IO).

Table 1: restoration table 1

Property Name	Type	Unit	I/O	Description
reconfig_attempts	int32	N/A	I	Number of reconfiguration attempts a system will perform before giving up and determining the system can not be fully restored at that condition.
reconfig_iteration_limit	int32	N/A	I	Number of iterations to let PF go before flagging this as a bad reconfiguration
source_vertex	object	N/A	IO	Source vertex object for reconfiguration
faulted_section	object	N/A	I	Faulted section for reconfiguration
feeder_power_limit	char1024	N/A	I	Comma-separated power limit (VA) for feeders during reconfiguration
feeder_power_links	char1024	N/A	I	Comma-separated list of link-based objects for monitoring power through
feeder_vertex_list	char1024	N/A	I	Comma-separated object list that defines the feeder vertices
microgrid_power_limit	char1024	N/A	I	Comma-separated power limit (complex VA) for microgrids during reconfiguration
microgrid_power_links	char1024	N/A	I	Comma-separated list of link-based objects for monitoring power through
microgrid_vertex_list	char1024	N/A	I	Comma-separated object list that defines the microgrid vertices
lower_voltage_limit	double	pu	I	Lower voltage limit for the reconfiguration validity checks - per unit
upper_voltage_limit	double	pu	I	Upper voltage limit for the reconfiguration validity checks - per unit
output_filename	char1024	N/A	I	Output text file name to describe final or attempted switching operations
generate_all_scenarios	bool	N/A	I	Flag to determine if restoration reconfiguration and continues, or explores the full space

Restoration State of Development

The restoration object is considered highly experimental at this time.