Recloser

recloser objects are a special type of switch that open at the detection of a fault condition and will close if the fault condition is removed or isolated within a certain period of time. The time is typically determined by the number of closing tries and the time between tries. recloser objects work with both the FBS and NR solver methods, but their reliability functionality only works with the NR method. A typical recloser implementation is

object recloser {
    name recloser_2;
    phases "ABCN";
    from node_2a;
    to node_2b;
    retry_time 1s;
    max_number_of_tries 3;
}

Recloser objects inherit for switch and therefore share all parameters belonging to both switch and link. recloser objects are exercised only by the reliability module at this time.

Recloser Parameters

Properties

recloser objects are derived from switch objects, so any parameters of the switch object are available as well.

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

Table 1: recloser table 1

Property Name	Type	Unit	I/O	Description
retry_time	double	s	I	The time to wait in seconds before trying to close after a fault condition is detected. This parameter is unused at this time and is put in place for future functionality.
max_number_of_tries	double	N/A	I	The number of times the recloser will try to close before permanently opening
number_of_tries	double	N/A	IO	Number of tries a recloser has been actuated in the current fault condition.

Recloser State of Development

Recloser is considered a validated model in terms of powerflow solutions and reliability integration. However, testing has been limited and feature additions may still be necessary.