pof_transformer_04_10kv: Current Probability of Failure for 0.4/10kV Transformers

In CNAIM: Common Network Asset Indices Methodology (CNAIM)

Current Probability of Failure for 0.4/10kV Transformers

Description

This function calculates the current annual probability of failure for 0.4/10kV Transformers. The function is a cubic curve that is based on the first three terms of the Taylor series for an exponential function.

Usage

pof_transformer_04_10kv(
  utilisation_pct = "Default",
  placement = "Default",
  altitude_m = "Default",
  distance_from_coast_km = "Default",
  corrosion_category_index = "Default",
  age,
  partial_discharge = "Default",
  temperature_reading = "Default",
  observed_condition = "Default",
  reliability_factor = "Default",
  moisture = "Default",
  acidity = "Default",
  bd_strength = "Default",
  k_value = 0.0077,
  c_value = 1.087,
  normal_expected_life = 55
)

Arguments

utilisation_pct	Numeric Utilisation percentage
placement	String. Specify if the asset is located outdoor or indoor.
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. 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. 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.
partial_discharge	String. Indicating the level of partial discharge. Options for partial_discharge: partial_discharge = c("Low", "Medium", "High (Not Confirmed)", "High (Confirmed)", "Default").
temperature_reading	String. Indicating the criticality. Options for temperature_reading: temperature_reading = c("Normal", "Moderately High", "Very High", "Default").
observed_condition	String. Indicating the observed condition of the transformer. Options for observed_condition: observed_condition = c("No deterioration", "Superficial/minor deterioration", "Slight deterioration", "Some Deterioration", "Substantial Deterioration", "Default").
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).
moisture	Numeric. the amount of moisture given in (ppm)
acidity	Oil Acidity
bd_strength	Numeric. the amount of breakdown strength given in (kV)
k_value	Numeric. k_value = 0.0077 by default. This number is given in a percentage. The default value is accordingly to the standard "DE-10kV apb kabler CNAIM" on p. 34.
c_value	Numeric. c_value = 1.087 by default. The default value is accordingly to the CNAIM standard see page 110
normal_expected_life	Numeric. normal_expected_life = 55 by default. The default value is accordingly to the standard "DE-10kV apb kabler CNAIM" on p. 33.

Value

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

Examples

# Current probability of failure for 0.4/10kV Transformers
pof_transformer_04_10kv(utilisation_pct = "Default",
placement = "Default",
altitude_m = "Default",
distance_from_coast_km = "Default",
corrosion_category_index = "Default",
age = 10,
partial_discharge = "Default",
temperature_reading = "Default",
observed_condition = "Default",
reliability_factor = "Default",
moisture = "Default",
acidity = "Default",
bd_strength = "Default",
k_value = 0.0077,
c_value = 1.087,
normal_expected_life = 55)

CNAIM documentation built on Aug. 31, 2022, 9:13 a.m.