Transmission OPF Method

Units:	-
Default Value:	0
Validation Rule:	In (0,1)
Description:	Method for solving optimal power flow.

Transmission OPF Method sets the type of formulation used to model Optimal Power Flow. It can take these values:

Variable Shift Factor OPF (value = 0)

A linearized DC OPF with integrated computation of shift factors.

Fixed Shift Factor OPF (value = 1)

A linearized DC OPF with precomputation of shift factors.

The two methods provide broadly similar capabilities, with the variable shift factor being a more verbose formulation similar to the formulations used in these LMP-based markets:

• New Zealand
• Singapore
• Ireland

The fixed-shift factor method is a more ‘traditional’ linearized DC OPF suitable for modelling large networks.

These methods are discussed in detail in the article OPF Methods.

Both methods support modelling of transmission losses.