CNAIM (version 2.1.4)

pof_hv_switchgear_primary: Current Probability of Failure for HV Switchgear Primary

Description

This function calculates the current annual probability of failure per kilometer HV Switchgear Primary The function is a cubic curve that is based on the first three terms of the Taylor series for an exponential function. For more information about the probability of failure function see section 6 on page 34 in CNAIM (2021).

Usage

pof_hv_switchgear_primary(
  hv_asset_category = "6.6/11kV CB (GM) Primary",
  placement = "Default",
  number_of_operations = "Default",
  altitude_m = "Default",
  distance_from_coast_km = "Default",
  corrosion_category_index = "Default",
  age,
  measured_condition_inputs,
  observed_condition_inputs,
  reliability_factor = "Default"
)

Value

DataFrame Current probability of failure per annum per kilometer along with current health score.

Arguments

hv_asset_category

String The type of HV asset category

placement

String. Specify if the asset is located outdoor or indoor.

number_of_operations

The number of operations for duty factor

altitude_m

Numeric. Specify the altitude location for the asset measured in meters from sea level.altitude_m is used to derive the altitude factor. See page 111, table 23 in CNAIM (2021). A setting of "Default" will set the altitude factor to 1 independent of asset_type.

distance_from_coast_km

Numeric. Specify the distance from the coast measured in kilometers. distance_from_coast_km is used to derive the distance from coast factor See page 110, table 22 in CNAIM (2021). A setting of "Default" will set the distance from coast factor to 1 independent of asset_type.

corrosion_category_index

Integer. Specify the corrosion index category, 1-5.

age

Numeric. The current age in years of the conductor.

measured_condition_inputs

Named list observed_conditions_input

observed_condition_inputs

Named list observed_conditions_input conductor_samp = c("Low","Medium/Normal","High","Default"). See page 161, table 199 and 201 in CNAIM (2021).

reliability_factor

Numeric. reliability_factor shall have a value between 0.6 and 1.5. A setting of "Default" sets the reliability_factor to 1. See section 6.14 on page 73 in CNAIM (2021).

Examples

# Current annual probability of failure for HV Swicthgear Primary
pof_hv_switchgear_primary(
hv_asset_category = "6.6/11kV CB (GM) Primary",
placement = "Default",
number_of_operations = "Default",
altitude_m = "Default",
distance_from_coast_km = "Default",
corrosion_category_index = "Default",
age = 10,
observed_condition_inputs =list("external_condition" =
list("Condition Criteria: Observed Condition" = "Default"),
"oil_gas" = list("Condition Criteria: Observed Condition" = "Default"),
"thermo_assment" = list("Condition Criteria: Observed Condition" = "Default"),
"internal_condition" = list("Condition Criteria: Observed Condition" = "Default"),
"indoor_env" = list("Condition Criteria: Observed Condition" = "Default")),
 measured_condition_inputs = list("partial_discharge" =
 list("Condition Criteria: Partial Discharge Test Results" = "Default"),
 "ductor_test" = list("Condition Criteria: Ductor Test Results" = "Default"),
 "oil_test" = list("Condition Criteria: Oil Test Results" = "Default"),
 "temp_reading" = list("Condition Criteria: Temperature Readings" = "Default"),
 "trip_test" = list("Condition Criteria: Trip Timing Test Result" = "Default"),
 "ir_test" = list("Condition Criteria: IR Test Results" = "Default" )),
 reliability_factor = "Default")