What do we call the method of operating power sources at the same time?

The method of operating power sources at the same time is referred to as parallel operation. In this configuration, multiple generators or power sources work together to meet the total electrical demand. When connected in parallel, these sources share the load according to their ratings, which enhances system reliability and capacity.

This setup is beneficial because it allows for redundancy; if one power source fails, the others can continue to supply power, and it also allows for maintenance without interrupting power supply. Additionally, operating generators in parallel can optimize fuel usage and improve overall efficiency.

In contrast, independent operation and sequential operation pertain to scenarios where power sources operate separately or one after another rather than simultaneously. Combined operation might imply using various methods along with power sources but does not specifically capture the essence of concurrent operation that parallel operation clearly defines.