What method is used to minimize cross currents when the bus voltage is high and the power factors are the same?

Minimizing cross currents in a power system is crucial, especially when bus voltage is high and the power factors of the connected units are the same. Lowering the voltage to all units effectively reduces the potential difference across the system, which in turn decreases the current flow. This is important because high cross currents can lead to issues such as overheating, equipment stress, and stability problems due to the imbalanced current distribution.

When voltage is lowered, it helps to maintain a more uniform distribution of electrical load and reduces the likelihood of excessive current flowing between different generators or units that are connected to the same bus. This action helps protect the integrity of the system while maintaining synchronous operation among the generators.

In contrast, increasing voltage could exacerbate cross currents by increasing the overall potential difference, while turning off a generator might sever the generation capability without effectively addressing the cross current issue. Adjusting the load may help, but lowering the voltage directly tackles the core issue of current imbalance resulting from high bus voltage. Thus, lowering the voltage provides a practical and systematic way to ensure smoother operation and minimize cross currents.