What is the approximate MVAR per mile production for a 345kV line?

The approximate MVAR (Mega Volt Ampere Reactive) production for a 345kV line is commonly understood to be around 3/4 MVAR per mile. This value is derived from typical industry calculations related to transmission lines, taking into account factors such as line impedance and the need for reactive power support in the system.

In transmission systems, higher voltage lines like a 345kV line are generally more efficient at transferring power over long distances, contributing to a relatively standard value for MVAR production. Understanding this allows operators and planners to estimate the reactive power needs effectively, which is essential for maintaining voltage stability and optimizing the grid's overall performance.

Using this approximate value helps utilities ensure that they have adequate reactive power provisioned along their transmission corridors, which is critical for preventing voltage collapse and ensuring reliable service. Thus, the choice of 3/4 MVAR per mile aligns with established practices in transmission line analysis and design in the context of electrical grids.