pof_future_cables_66_33kv {CNAIM}  R Documentation 
This function calculates the future annual probability of failure per kilometer for a 3366kV cables. 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).
pof_future_cables_66_33kv( cable_type = "66kV UG Cable (Gas)", sub_division = "Aluminium sheath  Aluminium conductor", utilisation_pct = "Default", operating_voltage_pct = "Default", sheath_test = "Default", partial_discharge = "Default", fault_hist = "Default", leakage = "Default", reliability_factor = "Default", age, simulation_end_year = 100 )
cable_type 
String.
A sting that refers to the specific asset category.
See See page 15, table 1 in CNAIM (2017).
Options:

sub_division 
String. Refers to material the sheath and conductor is
made of. Options:

utilisation_pct 
Numeric. The max percentage of utilisation under normal operating conditions. 
operating_voltage_pct 
Numeric. The ratio in percent of operating/design voltage. 
sheath_test 
String. Only applied for non pressurised cables.
Indicating the state of the sheath. Options:

partial_discharge 
String. Only applied for non pressurised cables.
Indicating the level of partial discharge. Options:

fault_hist 
Numeric. Only applied for non pressurised cables.
The calculated fault rate for the cable in the period per kilometer.
A setting of 
leakage 
String. Only applied for oil and gas pressurised cables.
Options:

reliability_factor 
Numeric. 
age 
Numeric. The current age in years of the cable. 
simulation_end_year 
Numeric. The last year of simulating probability of failure. Default is 100. 
Numeric array. Future probability of failure per annum per kilometre for 3366kV cables.
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
# Future probability of failure for 66kV UG Cable (Non Pressurised) pof_66kV_non_pressurised < pof_future_cables_66_33kv(cable_type = "66kV UG Cable (Non Pressurised)", sub_division = "Aluminium sheath  Aluminium conductor", utilisation_pct = 75, operating_voltage_pct = 50, sheath_test = "Default", partial_discharge = "Default", fault_hist = "Default", leakage = "Default", reliability_factor = "Default", age = 1, simulation_end_year = 100) # Plot plot(pof_66kV_non_pressurised$PoF * 100, type = "line", ylab = "%", xlab = "years", main = "PoF per kilometre  66kV UG Cable (Non Pressurised)")