oil_test_modifier {CNAIM}

Oil Test Modifier

Description

This function calculates the oil test modifier for 33/10kV, 66/10kV and 132kV transformers and tapchangers. See e.g. section 6.11 on page 68 in CNAIM (2021).

Usage

oil_test_modifier(
  moisture = "Default",
  acidity = "Default",
  bd_strength = "Default",
  transformer_type_all = "20kV Transformer (GM)"
)

Arguments

moisture

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

acidity

Numeric. Refers to the acidity level in the transformer oil. Acidity levels are measured in (mgKOH/g). A setting of "Default" will result in the best possible result.

bd_strength

Numeric. Refers to the breakdown strength. Breakdown strength is measured in kV. A setting of "Default" will result in the best possible result.

transformer_type_all

String. A sting that refers to the specific transformer type. Options: transformer_type_all = c("6.6/11kV Transformer (GM)", "20kV Transformer (GM)", "33kV Transformer (GM)", "66kV Transformer (GM)", "132kV Transformer (GM)" ). The default setting is transformer_type = "66kV Transformer (GM)"

Value

Data table.

Source

DNO Common Network Asset Indices Methodology (CNAIM), Health & Criticality - Version 2.1, 2021: https://www.ofgem.gov.uk/sites/default/files/docs/2021/04/dno_common_network_asset_indices_methodology_v2.1_final_01-04-2021.pdf

Examples

# Oil test modifier
oil_test_modifier(moisture = 15,
acidity = 0.15,
bd_strength = 30,
 transformer_type_all = "20kV Transformer (GM)")