What term describes the power flow back up to the generation source in power systems?

The term that describes the power flow back up to the generation source in power systems is "Back feed." This phenomenon typically occurs in instances where there is an excess generation of electricity, such as when distributed generation resources like solar panels or wind turbines send power back into the grid. Understanding back feed is vital for system operators, as it requires careful management to ensure the stability and reliability of the power system.

In the context of the other terms, while "reverse flow" may sound similar, it is not commonly used in the same technical context as back feed in power systems. A "feedback loop" usually refers to a control process in systems engineering and does not specifically pertain to power flow. "Load return" is less specific and does not accurately describe the phenomenon of power flowing back to the generation source, which is critical for managing and interpreting the dynamic behavior of an electrical grid. Thus, "Back feed" is the most accurate term for this scenario.