pof_cables_10kv_oil: Current Probability of Failure for 10kV UG Oil Non...

In CNAIM: Common Network Asset Indices Methodology (CNAIM)

Current Probability of Failure for 10kV UG Oil Non Preesurised Cables (Armed Paper Lead)

Description

This function calculates the current annual probability of failure per kilometer for a Oil non Preesurised cables. The function is a cubic curve that is based on the first three terms of the Taylor series for an exponential function.

Usage

pof_cables_10kv_oil(
  utilisation_pct = "Default",
  operating_voltage_pct = "Default",
  sheath_test = "Default",
  partial_discharge = "Default",
  fault_hist = "Default",
  reliability_factor = "Default",
  age,
  k_value = 0.24,
  c_value = 1.087,
  normal_expected_life = 80
)

Arguments

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: sheath_test = c("Pass", "Failed Minor", "Failed Major", "Default").
partial_discharge	String. Only applied for non pressurised cables. Indicating the level of partial discharge. Options: partial_discharge = c("Low", "Medium", "High", "Default").
fault_hist	Numeric. Only applied for non pressurised cables. The calculated fault rate for the cable in the period per kilometer. A setting of "No historic faults recorded" indicates no fault.
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).
age	Numeric. The current age in years of the cable.
k_value	Numeric. k_value = 0.24 by default.
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 = 80 by default.

Value

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

Examples

# Current annual probability of failure for 10kV oil cable, 50 years old
pof_cables_10kv_oil(
utilisation_pct = 80,
operating_voltage_pct = "Default",
sheath_test = "Default",
partial_discharge = "Default",
fault_hist = "Default",
reliability_factor = "Default",
age = 50,
k_value = 0.24,
c_value = 1.087,
normal_expected_life = 80)

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