What does the abbreviation ATC represent?

The abbreviation ATC stands for Available Transfer Capacity, which is a crucial concept in the study of electric power systems and transmission networks. ATC refers to the maximum amount of electric power that can be transferred over a transmission network from one area to another, while considering the existing load and generation levels as well as the constraints imposed by the network, such as thermal limits, voltage limits, and stability constraints.

Understanding ATC is vital for managing grid operations and ensuring reliability in power delivery, as it helps operators and market participants determine how much additional power can be transferred without compromising the system's stability or security. The calculation of ATC takes into account various factors, including the capacity of transmission lines, scheduling constraints, and potential outages, making it an important metric for both operational and planning purposes.

The other terms offered, while they may use similar wording or concepts, do not accurately define the abbreviation ATC in the context of power systems.