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#' @title Financial cost of Failure for LV swicthgear and others
#' @description This function calculates financial consequences of failure
#' (cf. section 7.3, page 79, CNAIM, 2021). Financial consequences
#' of failure is used in
#' the derivation of consequences of failure see \code{\link{cof}}().
#' @param lv_asset_category String The type of LV asset category
#' Options: \code{lv_asset_category = c("LV Board (WM)",
#' "LV Board (X-type Network) (WM)", "LV Circuit Breaker",
#' "LV Pillar (ID)", "LV Pillar (OD at Substation)", "LV Pillar (OD not at a Substation)")}
#' @param type_financial_factor_criteria String Type Financial factor criteria for LV switchgear
#' (cf. section D1.2.1, page 178, CNAIM, 2021).
#' Options: \code{type_financial_factor_criteria = c("Non Asbestos clad",
#' "Asbestos clad")}
#' @param access_factor_criteria String. Asses Financial factor criteria for LV switchgear
#' setting (cf. table 221, page 180, CNAIM, 2021).
#' Options: \code{access_factor_criteria = c("Type A", "Type B", "Type C")}.
#' @return Numeric. Financial consequences of failure for LV switchgear
#' @source DNO Common Network Asset Indices Methodology (CNAIM),
#' Health & Criticality - Version 2.1, 2021:
#' \url{https://www.ofgem.gov.uk/sites/default/files/docs/2021/04/dno_common_network_asset_indices_methodology_v2.1_final_01-04-2021.pdf}
#' @export
#' @examples
#' financial_cof_lv_switchgear_and_other(lv_asset_category = "LV Board (WM)",
#' type_financial_factor_criteria = "Asbestos clad",
#' access_factor_criteria = "Type A")
financial_cof_lv_switchgear_and_other <- function(lv_asset_category,
type_financial_factor_criteria,
access_factor_criteria){
`Asset Register Category` = `Health Index Asset Category` = `Asset Category` =
`Type Financial Factor Criteria` = NULL
asset_category <- gb_ref$categorisation_of_assets %>%
dplyr::filter(`Asset Register Category` == lv_asset_category) %>%
dplyr::select(`Health Index Asset Category`) %>% dplyr::pull()
# Reference cost of failure table 16 --------------------------------------
reference_costs_of_failure_tf <- dplyr::filter(gb_ref$reference_costs_of_failure,
`Asset Register Category` ==
lv_asset_category)
# Reference financial cost of failure -------------------------------------
fcost <- reference_costs_of_failure_tf$`Financial - (GBP)`
# Type financial factor ---------------------------------------------------
if(lv_asset_category == "LV Board (WM)" || lv_asset_category == "LV Board (X-type Network) (WM)"){
type_financial_factor <- 1
}else{
type_financial_factors <- gb_ref$type_financial_factors
type_financial_factors_tf <- dplyr::filter(type_financial_factors,
`Asset Register Category` == lv_asset_category,
`Type Financial Factor Criteria` == type_financial_factor_criteria)
type_financial_factor <- type_financial_factors_tf$`Type Financial Factor`[1]
}
# Access financial factor -------------------------------------------------
access_financial_factors <- gb_ref$access_factor_swg_tf_asset
access_financial_factors_tf <- dplyr::filter(access_financial_factors,
`Asset Category` ==
"LV Switchgear")
if (access_factor_criteria == "Type A") {
access_finacial_factor <-
access_financial_factors_tf$
`Access Factor: Type A Criteria - Normal Access ( & Default Value)`
}
else if (access_factor_criteria == "Type B") {
access_finacial_factor <-
access_financial_factors_tf$
`Access Factor: Type B Criteria - Constrained Access or Confined Working Space`
}
else if (access_factor_criteria == "Type C") {
access_finacial_factor <-
access_financial_factors_tf$
`Access Factor: Type C Criteria - Underground substation`
}
# Financial consequences factor -------------------------------------------
fc_factor <- type_financial_factor * access_finacial_factor
# Financial consequences of failure ---------------------------------------
return(fc_factor * fcost)
}
#' @title Safety cost of Failure for LV swicthgear and others
#' @description This function calculates safety consequences of failure
#' (cf. section 7.3, page 79, CNAIM, 2021). Safetyr consequences
#' of failure is used in
#' the derivation of consequences of failure see \code{\link{cof}}().
#' @param lv_asset_category String The type of LV asset category
#' Options: \code{lv_asset_category = c("LV Board (WM)",
#' "LV Board (X-type Network) (WM)", "LV Circuit Breaker",
#' "LV Pillar (ID)", "LV Pillar (OD at Substation)", "LV Pillar (OD not at a Substation)")}
#' @param location_risk String Type Financial factor criteria for LV switchgear
#' (cf. section D1.2.1, page 178, CNAIM, 2021).
#' Options: \code{location_risk = c("Low", "Medium", "High")}.
#' The default setting is
#' \code{location_risk = "Medium"}.
#' @param type_risk String. Asses Financial factor criteria for LV switchgear
#' setting (cf. table 221, page 180, CNAIM, 2021).
#' Options: \code{type_risk = c("Low", "Medium", "High")}.
#' The default setting is
#' \code{type_risk = "Medium"}.
#' @return Numeric. Financial consequences of failure for LV switchgear
#' @source DNO Common Network Asset Indices Methodology (CNAIM),
#' Health & Criticality - Version 2.1, 2021:
#' \url{https://www.ofgem.gov.uk/sites/default/files/docs/2021/04/dno_common_network_asset_indices_methodology_v2.1_final_01-04-2021.pdf}
#' @export
#' @examples
#' safety_cof_lv_switchgear_and_other(lv_asset_category = "LV Board (WM)",
#' location_risk = "Default",
#' type_risk = "Default")
safety_cof_lv_switchgear_and_other <- function(lv_asset_category,
location_risk,
type_risk){
`Asset Register Category` = `Health Index Asset Category` = `Asset Category` = NULL
asset_category <- gb_ref$categorisation_of_assets %>%
dplyr::filter(`Asset Register Category` == lv_asset_category) %>%
dplyr::select(`Health Index Asset Category`) %>% dplyr::pull()
reference_costs_of_failure_tf <- dplyr::filter(gb_ref$reference_costs_of_failure,
`Asset Register Category` ==
lv_asset_category)
# Reference financial cost of failure -------------------------------------
scost <- reference_costs_of_failure_tf$`Safety - (GBP)`
if (location_risk == "Default") location_risk <- "Medium (Default)"
if (location_risk == "Medium") location_risk <- "Medium (Default)"
if (type_risk == "Default") type_risk <- "Medium"
safety_conseq_factor_sg_tf_oh <- gb_ref$safety_conseq_factor_sg_tf_oh
row_no <- which(safety_conseq_factor_sg_tf_oh$
`Safety Consequence Factor - Switchgear, Transformers & Overhead Lines...2` ==
location_risk)
col_no <- grep(type_risk, colnames(safety_conseq_factor_sg_tf_oh))
safety_consequence_factor <- safety_conseq_factor_sg_tf_oh[row_no, col_no]
# Safety consequence of failure -------------------------------------------
safety_cof <- safety_consequence_factor * scost
return(safety_cof)
}
#' @title Environmental cost of Failure for LV swicthgear and others
#' @description This function calculates environmental consequences of failure
#' (cf. section 7.3, page 79, CNAIM, 2021). Environmental consequences
#' of failure is used in
#' the derivation of consequences of failure see \code{\link{cof}}().#' @return Numeric. Financial consequences of failure for LV switchgear
#' @param lv_asset_category String The type of LV asset category
#' Options: \code{lv_asset_category = c("LV Board (WM)",
#' "LV Board (X-type Network) (WM)", "LV Circuit Breaker",
#' "LV Pillar (ID)", "LV Pillar (OD at Substation)", "LV Pillar (OD not at a Substation)")}
#' @source DNO Common Network Asset Indices Methodology (CNAIM),
#' Health & Criticality - Version 2.1, 2021:
#' \url{https://www.ofgem.gov.uk/sites/default/files/docs/2021/04/dno_common_network_asset_indices_methodology_v2.1_final_01-04-2021.pdf}
#' @export
#' @examples
#' environmental_cof_lv_switchgear_and_other(lv_asset_category = "LV Board (WM)")
environmental_cof_lv_switchgear_and_other <- function(lv_asset_category){
`Asset Register Category` = `Health Index Asset Category` = `Asset Category` = NULL
asset_category <- gb_ref$categorisation_of_assets %>%
dplyr::filter(`Asset Register Category` == lv_asset_category) %>%
dplyr::select(`Health Index Asset Category`) %>% dplyr::pull()
reference_costs_of_failure_tf <- dplyr::filter(gb_ref$reference_costs_of_failure,
`Asset Register Category` ==
lv_asset_category)
# Reference financial cost of failure -------------------------------------
ecost <- reference_costs_of_failure_tf$`Environmental - (GBP)`
type_environmental_factor <- 1
size_environmental_factor <- 1
location_environmental_factor <- 1
environmental_consequences_factor <- (type_environmental_factor *
size_environmental_factor *
location_environmental_factor)
# Environmental consequences ----------------------------------------------
environmental_cof <- environmental_consequences_factor * ecost
return(environmental_cof)
}
#' @title Network cost of Failure for LV swicthgear and others
#' @description This function calculates network cost of failure for
#' all asset categories exclusive the assets EHV and 132kV transformers.
#' (cf. section 7.6, page 87, CNAIM, 2021). Network cost of failure
#' is used in the derivation of consequences of failure see \code{\link{cof}}().
#' @param lv_asset_category String The type of LV asset category
#' Options: \code{lv_asset_category = c("LV Board (WM)",
#' "LV Board (X-type Network) (WM)", "LV Circuit Breaker",
#' "LV Pillar (ID)", "LV Pillar (OD at Substation)", "LV Pillar (OD not at a Substation)")}
#' @param no_customers Numeric. The numner of customers
#' fed by an individual asset.
#' @param kva_per_customer Numeric. If the asset have an exceptionally high
#' demand per customer type in kVA per customer. A setting of \code{"Default"}
#' results in a multiplication factor of 1 (cf. table 18, page 89, CNAIM, 2021).
#' @return Numeric. Network cost of failure.
#' @source DNO Common Network Asset Indices Methodology (CNAIM),
#' Health & Criticality - Version 2.1, 2021:
#' \url{https://www.ofgem.gov.uk/sites/default/files/docs/2021/04/dno_common_network_asset_indices_methodology_v2.1_final_01-04-2021.pdf}
#' @export
#' @examples
#' network_cof_lv_switchgear_and_other(lv_asset_category = "LV Board (WM)",
#' no_customers = 750, kva_per_customer = 51)
network_cof_lv_switchgear_and_other <- function(lv_asset_category,
no_customers,
kva_per_customer = "Default") {
`Asset Register Category` = `Health Index Asset Category` = `Asset Category` = NULL
asset_category <- get_mmi_lv_switchgear_asset_category(lv_asset_category)
reference_costs_of_failure_tf <- dplyr::filter(gb_ref$reference_costs_of_failure,
`Asset Register Category` ==
lv_asset_category)
# Reference financial cost of failure -------------------------------------
ncost <- reference_costs_of_failure_tf$`Network Performance - (GBP)`
# Customer factor ---------------------------------------------------------
ref_nw_perf_cost_fail_lv_hv <- gb_ref$ref_nw_perf_cost_fail_lv_hv
ref_nw_perf_cost_fail_lv_hv_tf <- dplyr::filter(ref_nw_perf_cost_fail_lv_hv,
`Asset Category` ==
asset_category)
ref_no_cust <-
ref_nw_perf_cost_fail_lv_hv_tf$`Reference Number of Connected Customers`
customer_no_adjust_lv_hv_asset <- gb_ref$customer_no_adjust_lv_hv_asset
for (n in 1:nrow(customer_no_adjust_lv_hv_asset)){
if (kva_per_customer == 'Default'){
adj_cust_no <- 1
break
} else if (kva_per_customer >= as.numeric(
customer_no_adjust_lv_hv_asset$Lower[n]) &
kva_per_customer < as.numeric(
customer_no_adjust_lv_hv_asset$Upper[n])){
adj_cust_no <-
customer_no_adjust_lv_hv_asset$
`No. of Customers to be used in the derivation of Customer Factor`[n]
break
}
}
adj_cust_no <- gsub("([0-9]+).*$", "\\1", adj_cust_no) %>% as.numeric()
customer_factor <- (adj_cust_no * no_customers) / ref_no_cust
# Customer sensitivity factor ---------------------------------------------
customer_sensitivity_factor <- 1 # See section 7.6.2.2, p. 89 in CNAIM (2021)
# Network perfomance consequence factor -----------------------------------
network_performance_consequence_factor <- customer_factor *
customer_sensitivity_factor
# Network performance cost of failure -------------------------------------
network_cof <- network_performance_consequence_factor * ncost
return(network_cof)
}
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