To maximize system reliability, which practice should be employed?

Maximizing system reliability in electric power systems is crucial, and operating the system at maximum allowable voltage levels plays a key role in that process. Maintaining voltage levels within the prescribed limits ensures that the system can transmit power efficiently and reliably. High voltage enables the effective transmission of electricity over long distances, which reduces losses in the system and helps maintain stability. Moreover, a well-regulated voltage level prevents issues such as equipment overheating and helps secure the operational integrity of the grid, thereby minimizing the risk of outages or disruptions.

Other practices like removing all reactive resources from service or running generators under-excited could compromise system stability, leading to voltage issues or inefficient power delivery. Limiting generator operations to peak hours may not fully utilize the resources available, potentially affecting reliability during off-peak times when demand fluctuates. Therefore, optimizing voltage levels is a proactive measure that directly contributes to the reliability and efficiency of the power system.