pof_future_ohl_cond_04_10kv {CNAIM}R Documentation

Current Probability of Failure for 0.4-10kV OHL Conductors

Description

This function calculates the current annual probability of failure per kilometer 0.4-10kV OHL conductors. 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 30 in CNAIM (2017).

Usage

pof_future_ohl_cond_04_10kv(
  ohl_conductor = "10kV OHL (Tower Line) Conductor",
  utilisation_pct = "Default",
  operating_voltage_pct = "Default",
  placement = "Default",
  altitude_m = "Default",
  distance_from_coast_km = "Default",
  corrosion_category_index = "Default",
  age,
  conductor_samp = "Default",
  corr_mon_survey = "Default",
  visual_cond = "Default",
  midspan_joints = "Default",
  reliability_factor = "Default",
  simulation_end_year = 100
)

Arguments

ohl_conductor

String. A sting that refers to the specific asset category. See See page 15, table 1 in CNAIM (2017). Options: ohl_conductor = c("0.4kV OHL (Tower Line) Conductor", "10kV OHL (Tower Line) Conductor"). The default setting is ohl_conductor = "10kV OHL (Tower Line) Conductor".

utilisation_pct

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

operating_voltage_pct

Numeric. The ratio in percent of operating/design voltage.

placement

String. Specify if the asset is located outdoor or indoor. A setting of "Outdoor" means the asset is located in an outside environment, and a setting of "Indoor" means the asset is located in an indoor environment. A setting of "Default" will result in either an indoor or an outdoor environment setting that depends on the specification of asset_type. See page 107-108, table 25A in CNAIM (2017) for default environments.

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 107, table 23 in CNAIM (2017). 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 106, table 22 in CNAIM (2017). 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. corrosion_category_index is used to derive the corrosion category factor. See page 107, table 24 in CNAIM (2017). A setting of "Default" will set the corrosion category factor to 1 independent of asset_type.

age

Numeric. The current age in years of the conductor.

conductor_samp

String. Conductor sampling. Options: conductor_samp = c("Low","Medium/Normal","High","Default"). See page 146-147, table 192 and 194 in CNAIM (2017).

corr_mon_survey

String. Corrosion monitoring survey. Options: corr_mon_survey = c("Low","Medium/Normal","High","Default"). See page 146-147, table 193 and 195 in CNAIM (2017).

visual_cond

String. Visual condition. Options: visual_cond = c("As New","Normal Wear","Some Deterioration", "Substantial Deterioration", "Default"). See page 131-132, table 127 and 129 in CNAIM (2017).

midspan_joints

Integer. Number of midspan joints on the conductor. A span includes all conductors in that span. See page 131-132, table 128 and 130 in CNAIM (2017).

reliability_factor

Reliabilty factor

simulation_end_year

The year till which simulation has to be run

Value

Numeric. Current probability of failure per annum per kilometer.

Source

DNO Common Network Asset Indices Methodology (CNAIM), Health & Criticality - Version 1.1, 2017: https://www.ofgem.gov.uk/system/files/docs/2017/05/dno_common_network_asset_indices_methodology_v1.1.pdf

Examples

# Current future probability of failure for 10kV OHL (Tower Line) Conductor
pof_future_ohl_cond_04_10kv(
ohl_conductor = "10kV OHL (Tower Line) Conductor",
utilisation_pct = "Default",
operating_voltage_pct = "Default",
placement = "Default",
altitude_m = "Default",
distance_from_coast_km = "Default",
corrosion_category_index = "Default",
age = 10,
conductor_samp = "Default",
corr_mon_survey = "Default",
visual_cond = "Default",
midspan_joints = "Default",
reliability_factor = "Default",
simulation_end_year = 100)

[Package CNAIM version 1.0.1 Index]