What should be done if low voltage becomes a serious issue after a high voltage transmission line trip?

When dealing with low voltage that arises due to a high voltage transmission line trip, shedding load in the affected area is an essential response to stabilize the system. Specifically, shedding load in Area C would help address the low voltage conditions by reducing the demand and helping to balance the system.

This action is critical because excessive demand in a specific area can lead to system instability and potential blackouts if not managed properly. By selectively shedding load, the operational team can effectively alleviate pressure on the grid, allowing voltages to stabilize and ensuring continued reliability in the affected region.

In contrast, while options like requesting assistance from a Reliability Coordinator or closing capacitors may be part of broader strategies in managing voltages, they do not directly address the immediate need to adjust the load in the specific areas experiencing low voltage. Moreover, shedding load in Area A or elsewhere might not effectively resolve the immediate impact on Area C, where the low voltage issue is identified. Thus, focusing on the specific area where the problem exists ensures a more focused and effective response.