pof_future_transformer_30_60kv: Future Probability of Failure for 30/10kV and 60/10kV...

View source: R/pof_future_transformer_30_60kv.R

pof_future_transformer_30_60kvR Documentation

Future Probability of Failure for 30/10kV and 60/10kV Transformers

Description

This function calculates the future annual probability of failure for 30/10kV and 60/10kV 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_future_transformer_30_60kv(
  transformer_type = "60kV Transformer (GM)",
  year_of_manufacture,
  utilisation_pct = "Default",
  no_taps = "Default",
  placement = "Default",
  altitude_m = "Default",
  distance_from_coast_km = "Default",
  corrosion_category_index = "Default",
  age_tf,
  age_tc,
  partial_discharge_tf = "Default",
  partial_discharge_tc = "Default",
  temperature_reading = "Default",
  main_tank = "Default",
  coolers_radiator = "Default",
  bushings = "Default",
  kiosk = "Default",
  cable_boxes = "Default",
  external_tap = "Default",
  internal_tap = "Default",
  mechnism_cond = "Default",
  diverter_contacts = "Default",
  diverter_braids = "Default",
  moisture = "Default",
  acidity = "Default",
  bd_strength = "Default",
  hydrogen = "Default",
  methane = "Default",
  ethylene = "Default",
  ethane = "Default",
  acetylene = "Default",
  hydrogen_pre = "Default",
  methane_pre = "Default",
  ethylene_pre = "Default",
  ethane_pre = "Default",
  acetylene_pre = "Default",
  furfuraldehyde = "Default",
  reliability_factor = "Default",
  k_value = 0.454,
  c_value = 1.087,
  normal_expected_life_tf = "Default",
  normal_expected_life_tc = "Default",
  simulation_end_year = 100
)

Arguments

transformer_type

String. A sting that refers to the specific asset category. Options: transformer_type = c("30kV Transformer (GM)", "60kV Transformer (GM)"). The default setting is transformer_type = "60kV Transformer (GM)"

year_of_manufacture

Numeric. Normal expected life depends on the year for manufacture.

utilisation_pct

Numeric. The max percentage of utilisation under normal operating conditions.

no_taps

Numeric. Average number of daily taps (tapchanger).

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_tf

Numeric. The current age in years of the transformer.

age_tc

Numeric. The current age in years of the tapchanger

partial_discharge_tf

String. Indicating the level of partial discharge in the transformer. Options: partial_discharge_tf = c("Low", "Medium", "High (Not Confirmed)", "High (Confirmed)", "Default").

partial_discharge_tc

String. Indicating the level of partial discharge in the tapchanger Options: partial_discharge_tc = c("Low", "Medium", "High (Not Confirmed)", "High (Confirmed)", "Default").

temperature_reading

String. Indicating the criticality. Options: temperature_reading = c("Normal", "Moderately High", "Very High", "Default").

main_tank

String. Indicating the observed condition of the main tank. Options: main_tank = c("Superficial/minor deterioration", "Some Deterioration", "Substantial Deterioration", "Default"). in CNAIM (2021).

coolers_radiator

String. Indicating the observed condition of the coolers/radiators. Options: coolers_radiator = c("Superficial/minor deterioration", "Some Deterioration", "Substantial Deterioration", "Default"). in CNAIM (2021).

bushings

String. Indicating the observed condition of the bushings. Options: bushings = c("Superficial/minor deterioration", "Some Deterioration", "Substantial Deterioration", "Default").

kiosk

String. Indicating the observed condition of the kiosk. Options: kiosk = c("Superficial/minor deterioration", "Some Deterioration", "Substantial Deterioration", "Default").

cable_boxes

String. Indicating the observed condition of the cable boxes. Options: cable_boxes = c("No Deterioration","Superficial/minor deterioration", "Some Deterioration", "Substantial Deterioration", "Default").

external_tap

String. Indicating the observed external condition of the tapchanger. Options: external_tap = c("Superficial/minor deterioration", "Some Deterioration", "Substantial Deterioration", "Default"). in CNAIM (2021).

internal_tap

String. Indicating the observed internal condition of the tapchanger. Options: external_tap = c("Superficial/minor deterioration", "Some Deterioration", "Substantial Deterioration", "Default"). in CNAIM (2021).

mechnism_cond

String. Indicating the observed condition of the drive mechnism. Options: mechnism_cond = c("No deterioration", "Superficial/minor deterioration", "Some Deterioration", "Substantial Deterioration", "Default"). in CNAIM (2021).

diverter_contacts

String. Indicating the observed condition of the selector and diverter contacts. Options: diverter_contacts = c("No deterioration", "Superficial/minor deterioration", "Some Deterioration", "Substantial Deterioration", "Default"). in CNAIM (2021).

diverter_braids

String. Indicating the observed condition of the selector and diverter braids. Options: diverter_braids = c("No deterioration", "Superficial/minor deterioration", "Some Deterioration", "Substantial Deterioration", "Default").

moisture

Numeric. the amount of moisture given in (ppm) See page 162, table 203 in CNAIM (2021).

acidity

Numeric. the amount of acidicy given in (mg KOH/g) See page 162, table 204 in CNAIM (2021).

bd_strength

Numeric. the amount of breakdown strength given in (kV) See page 162, table 205 in CNAIM (2021).

hydrogen

Numeric. Refers to the hydrogen level in the transformer oil. Hydrogen levels are measured in ppm. A setting of "Default" will result in the best possible result.

methane

Numeric. Refers to the methane level in the transformer oil. Methane levels are measured in ppm. A setting of "Default" will result in the best possible result.

ethylene

Numeric. Refers to the ethylene level in the transformer oil. Ethylene levels are measured in ppm. A setting of "Default" will result in the best possible result.

ethane

Numeric. Refers to the ethane level in the transformer oil. Ethane levels are measured in ppm. A setting of "Default" will result in the best possible result.

acetylene

Numeric. Refers to the acetylene level in the transformer oil. Acetylene levels are measured in ppm. A setting of "Default" will result in the best possible result.

hydrogen_pre

Numeric. Previous results. A setting of "Default" will result in the best possible result.

methane_pre

Numeric. Previous results. A setting of "Default" will result in the best possible result.

ethylene_pre

Numeric. Previous results. A setting of "Default" will result in the best possible result.

ethane_pre

Numeric. Previous results. A setting of "Default" will result in the best possible result.

acetylene_pre

Numeric. Previous results. A setting of "Default" will result in the best possible result.

furfuraldehyde

Numeric. Refers to the furfuraldehyde level in the transformer oil. furfuraldehyde levels are measured in ppm. A setting of "Default" will result in the best possible result.

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).

k_value

Numeric. k_value = "0.0454" by default. This number is given in a percentage. The default value is accordingly to the CNAIM standard on p. 110.

c_value

Numeric. c_value = 1.087 by default. The default value is accordingly to the CNAIM standard see page 110

normal_expected_life_tf

Numeric. normal_expected_life_tf = "Default" by default. The default value is accordingly to the CNAIM standard on page 107.

normal_expected_life_tc

Numeric. normal_expected_life_tc = "Default" by default. The default value is accordingly to the CNAIM standard on page 107.

simulation_end_year

Numeric. The last year of simulating probability of failure. Default is 100.

Value

DataFrame. Future probability of failure along with future health score

Examples

# Future probability of failure for a 60/10kV transformer
pof_future_transformer_30_60kv(transformer_type = "60kV Transformer (GM)",
year_of_manufacture = 1980,
utilisation_pct = "Default",
no_taps = "Default",
placement = "Default",
altitude_m = "Default",
distance_from_coast_km = "Default",
corrosion_category_index = "Default",
age_tf = 43,
age_tc = 43,
partial_discharge_tf = "Default",
partial_discharge_tc = "Default",
temperature_reading = "Default",
main_tank = "Default",
coolers_radiator = "Default",
bushings = "Default",
kiosk = "Default",
cable_boxes = "Default",
external_tap = "Default",
internal_tap = "Default",
mechnism_cond = "Default",
diverter_contacts = "Default",
diverter_braids = "Default",
moisture = "Default",
acidity = "Default",
bd_strength = "Default",
hydrogen = "Default",
methane = "Default",
ethylene = "Default",
ethane = "Default",
acetylene = "Default",
hydrogen_pre = "Default",
methane_pre = "Default",
ethylene_pre = "Default",
ethane_pre = "Default",
acetylene_pre = "Default",
furfuraldehyde = "Default",
reliability_factor = "Default",
k_value = 0.454,
c_value = 1.087,
normal_expected_life_tf = "Default",
normal_expected_life_tc = "Default",
simulation_end_year = 100)

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