Line Index

Line Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
Build Cost	$000	True	0		False	Cost of building the line
Build Non-anticipativity	$/MW	False	-1		False	Price for violating non-anticipativity constraints in scenario-wise decomposition mode
Circuits	-	True	1	≥1	False	Number of circuits in the notional interconnector for the purposes of outage modelling
Commission Date	-	False	1	≥0	False	Date the line was commissioned for use with [Technical Life]
Contingency Limit Penalty	$/MWh	False	-1		False	Penalty for exceeding contingency flow limits
Debt Charge	$000	False	0		False	Annual debt charge
Economic Life	yr	False	30	≥0	False	Economic life of the line (period over which fixed costs are recovered).
Enforce Limits	-	False	1	In (0,1,2,3)	False	Controls when flow limits are enforced with regard to Transmission [Constraint Voltage Threshold].
Equity Charge	$000	False	0		False	Annual required return on equity
Expansion Optimality	-	False	2	In (0,2)	False	Expansion planning integerization scheme.
Firm Capacity	MW	False	0		False	Net capacity reserves exported
Fixed Charge	$/kW/yr	True	0		False	Generic annual fixed charge
Fixed Flow	MW	False	0		False	Fixed flow on line
Fixed Flow Method	-	False	1	In (0,1)	False	Method of interpreting zero values of the [Fixed Flow] property.
Fixed Flow Penalty	$/MWh	False	-1		False	Penalty for violation of [Fixed Flow].
Fixed Loss	MW	False	0		False	Fixed loss on line
Flow Non-anticipativity	$	False	0		False	Price for violating non-anticipativity constraints in scenario-wise decomposition mode
Flow Non-anticipativity Time	h	False	0	≥0	False	Window of time over which to enforce non-anticipativity constraints in scenario-wise decomposition
FO&M Charge	$000	False	0		False	Annual fixed operation and maintenance charge
Forced Outage Rate	%	True	0	Between 0 And 100	False	Expected proportion of time the facility is unavailable due to forced outage
Formulate NPL Upfront	Yes/No	False	0	In (0,-1)	False	If integer conditions that control non-physical losses should be formulated upfront rather than checked iteratively.
Formulate Upfront	Yes/No	False	0	In (0,-1)	False	If constraints should all be formulated upfront rather than checked iteratively.
Integerization Horizon	yr	False	-1	≥-1	False	Number of years over which the expansion decisions are integerized
Lead Time	yr	False	0	≥0	False	Number of years after which the expansion project can begin
Limit Penalty	$/MWh	False	-1		False	Penalty for exceeding the flow limits on the line
Loss Allocation	-	False	0.5	Between 0 And 1	False	Proportion of line losses allocated to the receiving node
Loss Base	-	False	0		False	Interconnector loss function constant parameter for reference direction flows
Loss Base Back	-	False	0		False	Interconnector loss function constant parameter for counter-reference direction flows
Loss Incr	-	True	0		False	Interconnector loss function linear parameter for reference direction flows
Loss Incr Back	-	True	0		False	Interconnector loss function linear parameter for counter-reference direction flows
Loss Incr2	-	False	0		False	Interconnector loss function quadratic parameter for reference direction flows
Loss Incr2 Back	-	False	0		False	Interconnector loss function quadratic parameter for counter-reference direction flows
Maintenance Frequency	-	True	0	≥0	False	Frequency of maintenance outages in an annual timeframe
Maintenance Rate	%	True	0	Between 0 And 100	False	Expected proportion of time the facility is unavailable due to maintenance
Marginal Loss Factor	-	False	1		False	Transmission marginal loss factor (MLF or TLF) for exports
Marginal Loss Factor Back	-	False	1		False	Transmission marginal loss factor (MLF or TLF) for imports
Max Capacity Reserves	MW	False	1E+30		False	Maximum amount of capacity reserves supplied to the receiving Region/Zone.
Max Flow	MW	True	1E+30		False	Maximum flow
Max Loss Tranches	-	False	2	≥2	False	Maximum number of tranches in piecewise linear loss function.
Max Ramp Down	MW/min	True	1E+30	≥0	False	Maximum ramp down rate
Max Ramp Up	MW/min	True	1E+30	≥0	False	Maximum ramp up rate
Max Rating	MW	False	1E+30		False	Rated maximum (overrides Max Flow)
Max Time To Repair	h	True	0	≥0	False	Maximum time to repair (hr)
Max Units Built	-	False	0	In (0,1)	False	Maximum number of units automatically constructed in aggregate over the planning horizon
Max Units Built in Year	-	False	1	In (0,1)	False	Maximum number of units automatically constructed in any single year of the planning horizon
Max Units Retired	-	False	0	In (0,1)	False	Maximum number of units automatically retired in aggregate over the planning horizon
Max Units Retired in Year	-	False	1	In (0,1)	False	Maximum number of units automatically retired in any single year of the planning horizon
Mean Time to Repair	h	True	24	≥0	False	Mean time to repair
Min Capacity Reserves	MW	False	-1E+30		False	Minimum amount of capacity reserves supplied to the receiving Region/Zone.
Min Flow	MW	True	-1E+30		False	Minimum flow
Min Rating	MW	False	-1E+30		False	Rated minimum (overrides Min Flow)
Min Time To Repair	h	True	0	≥0	False	Minimum time to repair (hr)
Min Units Built	-	False	0	In (0,1)	False	Minimum number of lines automatically constructed
Min Units Built in Year	-	False	0	In (0,1)	False	Minimum number of units automatically constructed in any single year of the planning horizon
Min Units Retired	-	False	0	In (0,1)	False	Minimum number of lines automatically retired
Min Units Retired in Year	-	False	0	In (0,1)	False	Minimum number of units automatically retired in any single year of the planning horizon
Must Report	Yes/No	False	0	In (0,-1)	False	If the Line must be reported regardless of Transmission [Report Voltage Threshold].
Offer Base	MW	False	0		False	Base dispatch point for balancing offer
Offer Price	$/MWh	True	10000		False	Price offered in band for reference direction flows
Offer Price Back	$/MWh	True	10000		False	Price offered in band for counter-reference direction flows
Offer Quantity	MW	True	0		False	Quantity offered in band for reference direction flows
Offer Quantity Back	MW	True	0		False	Quantity offered in band for counter-reference direction flows
Offer Quantity Format	-	False	0	In (0,1)	False	Format for [Offer Quantity] and [Offer Price]
Outage Max Rating	MW	True	0		False	Line rating in the reference direction during outage
Outage Min Rating	MW	True	0		False	Line rating in the counter-reference direction during outage
Overload Max Rating	MW	False	0		False	Emergency line rating in the reference direction
Overload Min Rating	MW	False	0		False	Emergency line rating in the counter-reference direction
Price Setting	Yes/No	False	-1	In (0,-1)	False	Flag if the Line can transfer price across the network
Project Start Date	-	False	36526	≥0	False	Start date of transmission project, for expansion planning.
Ramp Down Point	MW	True	1E+30		False	Flow for use with multi-band Max Ramp Down constraints
Ramp Penalty	$/MW	False	0		False	Penalty for changes in flow on the line
Ramp Up Point	MW	True	1E+30		False	Flow for use with multi-band Max Ramp Up constraints
Random Number Seed	-	False	0	Between 0 And 2147483647	False	Random number seed assigned to the Line for the generation of outages
Reactance	pu	False	0		False	Together with any resistance this makes up the lines impedance
Repair Time Distribution	-	True	-1	In (-1,0,1,2,3,4,5,6,7)	False	Distribution used to generate repair times (Auto,Constant,Uniform,Triangular,Exponential,Weibull,Lognormal,SEV,LEV)
Repair Time Scale	-	True	0		False	Repair time function scale parameter (for exponential,Weibull,lognormal,SEV,LEV)
Repair Time Shape	-	True	0		False	Repair time function shape parameter (for Weibull,lognormal)
Resistance	pu	False	0		False	A measure of the line's opposition to the flow of electric charge
Retire Non-anticipativity	$/MW	False	-1		False	Price for violating non-anticipativity constraints in scenario-wise decomposition mode
Retirement Cost	$000	False	0		False	Cost of retiring the line
Susceptance	pu	False	0		False	The reciprocal of the reactance of a circuit and thus the imaginary part of its admittance
Technical Life	yr	False	1E+30	≥0	False	Technical lifetime of the line
Type	-	False	0	In (0,1)	False	Line expansion type
Units	-	False	1	In (0,1)	True	Flag if the line is in service (0,1)
Units Out	-	True	0	≥0	False	Number of units (circuits) out of service
WACC	%	False	10	≥0	False	Weighted average cost of capital
Wheeling Charge	$/MWh	False	0		False	Wheeling charge for reference direction flows
Wheeling Charge Back	$/MWh	False	0		False	Wheeling charge for counter-reference direction flows
x	-	True	0		False	Value to pass-through to solution
y	-	True	0		False	Value to pass-through to solution
z	-	True	0		False	Value to pass-through to solution

Line Companies Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
Share	%	False	100	Between 0 And 100	False	Percentage share of ownership

Line Maintenances Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
Outage Max Rating	MW	False	0		False	Line rating in the reference direction during outage
Outage Min Rating	MW	False	0		False	Line rating in the counter-reference direction during outage

Line Constraints Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
Build Cost Coefficient	$	False	0		False	Coefficient of total build cost
Export Capacity Built Coefficient	MW	False	0		False	Coefficient of export capacity built
Export Capacity Coefficient	MW	False	0		False	Coefficient of export capacity
Export Capacity Retired Coefficient	MW	False	0		False	Coefficient of export capacity retired
Flow Back Coefficient	MW	False	0		False	Coefficient of counter-reference direction flow
Flow Coefficient	MW	False	0		False	Coefficient of flow
Flow Forward Coefficient	MW	False	0		False	Coefficient of reference direction flow
Flow Squared Coefficient	-	False	0		False	Coefficient of square of line flow
Flowing Back Coefficient	-	False	0		False	Boolean value (1 if the line is flowing in the counter-reference direction, 0 otherwise)
Flowing Forward Coefficient	-	False	0		False	Boolean value (1 if the line is flowing in the reference direction, 0 otherwise)
Import Capacity Built Coefficient	MW	False	0		False	Coefficient of import capacity built
Import Capacity Coefficient	MW	False	0		False	Coefficient of import capacity
Import Capacity Retired Coefficient	MW	False	0		False	Coefficient of import capacity retired
Spare Export Capacity Coefficient	MW	False	0		False	Coefficient on spare line capacity in the reference direction
Spare Import Capacity Coefficient	MW	False	0		False	Coefficient on spare line capacity in the counter-reference direction
Units Built Coefficient	-	False	0		False	Coefficient of number of units built
Units Built in Year Coefficient	-	False	0		False	Coefficient of number of lines built in the year
Units Out Coefficient	-	False	0		False	Coefficient of units out
Units Retired Coefficient	-	False	0		False	Coefficient of number of units retired
Units Retired in Year Coefficient	-	False	0		False	Coefficient of number of lines retired in the year

Line Objectives Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
Build Cost Coefficient	$	False	0		False	Coefficient of total build cost
Export Capacity Built Coefficient	MW	False	0		False	Coefficient of export capacity built
Export Capacity Coefficient	MW	False	0		False	Coefficient of export capacity
Export Capacity Retired Coefficient	MW	False	0		False	Coefficient of export capacity retired
Flow Back Coefficient	MW	False	0		False	Coefficient of counter-reference direction flow
Flow Coefficient	MW	False	0		False	Coefficient of flow
Flow Forward Coefficient	MW	False	0		False	Coefficient of reference direction flow
Flow Squared Coefficient	-	False	0		False	Coefficient of square of line flow
Flowing Back Coefficient	-	False	0		False	Boolean value (1 if the line is flowing in the counter-reference direction, 0 otherwise)
Flowing Forward Coefficient	-	False	0		False	Boolean value (1 if the line is flowing in the reference direction, 0 otherwise)
Import Capacity Built Coefficient	MW	False	0		False	Coefficient of import capacity built
Import Capacity Coefficient	MW	False	0		False	Coefficient of import capacity
Import Capacity Retired Coefficient	MW	False	0		False	Coefficient of import capacity retired
Spare Export Capacity Coefficient	MW	False	0		False	Coefficient on spare line capacity in the reference direction
Spare Import Capacity Coefficient	MW	False	0		False	Coefficient on spare line capacity in the counter-reference direction
Units Built Coefficient	-	False	0		False	Coefficient of number of units built
Units Built in Year Coefficient	-	False	0		False	Coefficient of number of lines built in the year
Units Out Coefficient	-	False	0		False	Coefficient of units out
Units Retired Coefficient	-	False	0		False	Coefficient of number of units retired
Units Retired in Year Coefficient	-	False	0		False	Coefficient of number of lines retired in the year

Line Conditions Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
Flow Back Coefficient	MW	False	0		False	Coefficient of counter-reference direction flow in condition
Flow Coefficient	MW	False	0		False	Coefficient of line flow in condition
Flow Forward Coefficient	MW	False	0		False	Coefficient of reference direction flow in condition
Flowing Back Coefficient	-	False	0		False	Boolean value (1 if the line is flowing in the counter-reference direction, 0 otherwise)
Flowing Forward Coefficient	-	False	0		False	Boolean value (1 if the line is flowing in the reference direction, 0 otherwise)
Units Out Coefficient	-	False	0		False	Coefficient of units out

Line Output Properties

Name	Summary Name	Property Group	Phases	Multi-band	Description
Available Transfer Capability - MW	Available Transfer Capability - GWh	Capacity	LT Plan, MT Schedule, ST Schedule	False	Available transfer capability on the line.
Available Transfer Capability Back - MW	Available Transfer Capability Back - GWh	Capacity	LT Plan, MT Schedule, ST Schedule	False	Available transfer capability on the line in the counter-reference direction.
Build Cost - $000	Build Cost - $000	Expansion	LT Plan	False	Cost of building the line
Capacity Reserves - MW	Capacity Reserves - MW	Capacity	LT Plan, PASA	False	Contribution of the line to region capacity reserves
Cleared Offer Cost - $	Cleared Offer Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Area cleared under offer curve
Cleared Offer Price - $/MWh	Cleared Offer Price - $/MWh	Production	LT Plan, MT Schedule, ST Schedule	False	Price of marginal offer band
Debt Cost - $	Debt Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of debt
Discrete Maintenance - MW	Discrete Maintenance - GWh	Reliability	PASA	False	Planned reference direction capacity out of service
Discrete Maintenance Back - MW	Discrete Maintenance Back - GWh	Reliability	PASA	False	Planned counter-reference direction capacity out of service
Distributed Maintenance - MW	Distributed Maintenance - GWh	Reliability	PASA	False	Ideal reference direction capacity out on maintenance
Distributed Maintenance Back - MW	Distributed Maintenance Back - GWh	Reliability	PASA	False	Ideal counter-reference direction capacity out on maintenance
Equity Cost - $	Equity Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of equity
Export Capacity Built - MW	Export Capacity Built - MW	Expansion	LT Plan	False	Export capacity gained from new builds
Export Capacity Retired - MW	Export Capacity Retired - MW	Expansion	LT Plan	False	Export capacity lost to retirements
Export Cost - $	Export Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of energy exported
Export Limit - MW	Export Limit - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Maximum flow allowed on the line
Export Revenue - $	Export Revenue - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Revenue from energy exported
Firm Capacity - MW	Firm Capacity - MW	Capacity	LT Plan, PASA, MT Schedule, ST Schedule	False	Net capacity reserves exported
Fixed Flow - MW	Fixed Flow - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Fixed flow on line
Fixed Flow Violation - MW	Fixed Flow Violation - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Violation of [Fixed Flow] constraint.
Fixed Flow Violation Cost - $	Fixed Flow Violation Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of [Fixed Flow] violations.
Fixed Flow Violation Hours - h	Fixed Flow Violation Hours - h	Production	LT Plan, MT Schedule, ST Schedule	False	Number of hours that [Fixed Flow] is violated.
Flow - MW	Flow - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Flow
Flow Back - MW	Flow Back - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Flow on the line in the counter-reference direction
FO&M Cost - $	FO&M Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Fixed operation and maintenance cost
Forced Outage - MW	Forced Outage - GWh	Reliability	LT Plan, MT Schedule, ST Schedule	False	Capacity forced out
Forced Outage Rate - %	Forced Outage Rate - %	Reliability	LT Plan, MT Schedule, ST Schedule	False	Proportion of installed capacity on forced outage
Hours Congested - h	Hours Congested - h	Production	LT Plan, MT Schedule, ST Schedule	False	Number of hours line is congested in the reference direction
Hours Congested Back - h	Hours Congested Back - h	Production	LT Plan, MT Schedule, ST Schedule	False	Number of hours line is congested in the counter-reference direction
Import Capacity Built - MW	Import Capacity Built - MW	Expansion	LT Plan	False	Import capacity gained from new builds
Import Capacity Retired - MW	Import Capacity Retired - MW	Expansion	LT Plan	False	Import capacity lost to retirements
Import Cost - $	Import Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of energy imported
Import Limit - MW	Import Limit - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Minimum flow allowed on the line
Import Revenue - $	Import Revenue - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Revenue from energy imported
Loading - %	Loading - %	Production	LT Plan, MT Schedule, ST Schedule	False	Loading relative to thermal limit.
Loading Back - %	Loading Back - %	Production	LT Plan, MT Schedule, ST Schedule	False	Loading in the counter-reference direction relative to thermal limit.
Loss - MW	Loss - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Losses
Loss Back - MW	Loss Back - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Losses on flows in the counter-reference direction
Maintenance - MW	Maintenance - GWh	Reliability	LT Plan, PASA, MT Schedule, ST Schedule	False	Total capacity out of service in the reference direction (discrete + distributed)
Maintenance Back - MW	Maintenance Back - GWh	Reliability	LT Plan, PASA, MT Schedule, ST Schedule	False	Total capacity out of service in the reverse reference direction (discrete + distributed)
Maintenance Rate - %	Maintenance Rate - %	Reliability	LT Plan, MT Schedule, ST Schedule	False	Proportion of installed capacity on maintenance outage
Marginal Loss - %	Marginal Loss - %	Production	LT Plan, MT Schedule, ST Schedule	False	Marginal loss
Marginal Loss Factor	Marginal Loss Factor	Production	LT Plan, MT Schedule, ST Schedule	False	Transmission marginal loss factor (MLF or TLF) for exports
Max Flow - MW	Max Flow - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Maximum flow
Min Flow - MW	Min Flow - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Minimum flow
Net Flow - MW	Net Flow - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Net Flow on the line
Net Profit - $	Net Profit - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Net profit = net revenue - fixed costs
Offer Base - MW	Offer Base - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Base dispatch point for balancing offer
Offer Cleared - MW	Offer Cleared - GWh	Production	LT Plan, MT Schedule, ST Schedule	True	Quantity cleared in band
Offer Cleared Back - MW	Offer Cleared Back - GWh	Production	LT Plan, MT Schedule, ST Schedule	True	Quantity cleared in band
Offer Price - $/MWh	Offer Price - $/MWh	Production	LT Plan, MT Schedule, ST Schedule	True	Price offered in band for reference direction flows
Offer Price Back - $/MWh	Offer Price Back - $/MWh	Production	LT Plan, MT Schedule, ST Schedule	True	Price offered in band for counter-reference direction flows
Offer Quantity - MW	Offer Quantity - GWh	Production	LT Plan, MT Schedule, ST Schedule	True	Quantity offered in band for reference direction flows
Offer Quantity Back - MW	Offer Quantity Back - GWh	Production	LT Plan, MT Schedule, ST Schedule	True	Quantity offered in band for counter-reference direction flows
Ramp - MW		Production	LT Plan, MT Schedule, ST Schedule	False	Change in flow
Ramp Cost - $	Ramp Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of ramping
Rental - $	Rental - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Rental / settlement surplus
Rental Back - $	Rental Back - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Rental / settlement surplus in the counter-reference direction
Retirement Cost - $000	Retirement Cost - $000	Expansion	LT Plan	False	Cost of retiring the line
Service Factor - %	Service Factor - %	Reliability	LT Plan, MT Schedule, ST Schedule	False	Proportion of installed capacity available for transfer
Shadow Price - $/MW	Shadow Price - $/MW	Production	LT Plan, MT Schedule, ST Schedule	False	Shadow/expansion price
Shadow Price Back - $/MW	Shadow Price Back - $/MW	Production	LT Plan, MT Schedule, ST Schedule	False	Shadow/expansion price for counter-reference direction flows
Units	Units	Production	LT Plan, MT Schedule, ST Schedule	False	Flag if the line is in service (0,1)
Units Built	Units Built	Expansion	LT Plan	False	Number of units built
Units Out		Reliability	LT Plan, MT Schedule, ST Schedule	False	Number of units (circuits) out of service
Units Retired	Units Retired	Expansion	LT Plan	False	Number of units retired
Violation - MW	Violation - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Violation of flow limit
Violation Back - MW	Violation Back - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Violation of the flow limit in the counter-reference direction.
Violation Back Hours - h	Violation Back Hours - h	Production	LT Plan, MT Schedule, ST Schedule	False	Number of hours the flow limit is violated in the counter-reference direction.
Violation Cost - $	Violation Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of violating flow limits
Violation Cost Back - $	Violation Cost Back - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of violating the flow limit in the counter-reference direction.
Violation Hours - h	Violation Hours - h	Production	LT Plan, MT Schedule, ST Schedule	False	If the line is flowing above is minimum or maximum rating
Voltage - kV	Voltage - kV	Production	LT Plan, MT Schedule, ST Schedule	False	Voltage of the line
Wheeling Cost - $	Wheeling Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Wheeling cost
Wheeling Cost Back - $	Wheeling Cost Back - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Wheeling cost of flows in the counter-reference direction
x	x	Pass-through	LT Plan, PASA, MT Schedule, ST Schedule	True	Value to pass-through to solution
y	y	Pass-through	LT Plan, PASA, MT Schedule, ST Schedule	True	Value to pass-through to solution
z	z	Pass-through	LT Plan, PASA, MT Schedule, ST Schedule	True	Value to pass-through to solution