Power Metrics

The power_metrics object is used by the reliability module to calculate relevant powerflow metrics. The power_metrics object calculates the IEEE 1366-2003 metrics for evaluating the reliability indices of a power system.

For detailed information about reliability analysis and the metrics computed by this object, see the Reliability User Guide.

A minimalist power_metrics implementation is

object power_metrics {
    name PwrMetrics;
    }

with an equivalent of

object power_metrics {
    name PwrMetrics;
    base_time_value 60.0;
    }

power_metrics objects are primarily output objects.

Power Metrics Parameters

Properties

power_metrics 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: ower_metrics table 1

Property Name	Type	Unit	I/O	Description
SAIFI	double	N/A	IO	The simulation-long computed value of the System Average Interruption Frequency Index
SAIFI_int	double	N/A	IO	The interval-long computed value of the System Average Interruption Frequency Index. The interval is defined by the base_time_Value property.
SAIDI	double	N/A	IO	The simulation-long computed value of the System Average Interruption Duration Index
SAIDI_int	double	N/A	IO	The interval-long computed value of the System Average Interruption Duration Index. The interval is defined by the base_time_Value property.
CAIDI	double	N/A	IO	The simulation-long computed value of the Customer Average Interruption Duration Index.
CAIDI_int	double	N/A	IO	The interval-long computed value of the Customer Average Interruption Duration Index. The interval is defined by the base_time_Value property.
ASAI	double	N/A	IO	The simulation-long computed value of the Average Service Availability Index.
ASAI_int	double	N/A	IO	The interval-long computed value of the Average Service Availability Index. The interval is defined by the base_time_Value property.
MAIFI	double	N/A	IO	The simulation-long computed value of the Momentary Average Interruption Frequency Index
MAIFI_int	double	N/A	IO	Displays MAIFI values over the period specified by base_time_value as per IEEE 1366-2003
base_time_value	double	s	I	Interval duration for IEEE 1366-2003 statistics to be computed. This information is the basis for any time calculations. For example, the interruption duration for a CAIDI calculation can be interruptions per hour, interruptions per minute, or any other time base. base_time_value dictates this base for the calculations. The value defaults to 1 minute.

Power Metrics State of Development

The power_metrics object is tested and validated with the reliability module. However, it has not been fully validated and is considered experimental at this time.