Higher voltage lines are beneficial for system restoration due to their:

Higher voltage lines play a crucial role in system restoration because they facilitate the efficient transfer of large amounts of electrical power over long distances. This attribute is primarily due to their lower impedance and higher capacity.

When voltage levels are increased, the impedance of the transmission line reduces for a given power transfer. This means that the system can transmit more power with less current, which helps in minimizing energy losses in the form of heat. Lower impedance also contributes to a more stable and reliable transmission, enabling the lines to carry larger loads, which is particularly important during the restoration process after a disturbance or outage.

Higher capacity allows for the integration of various generation sources and can help restore power more quickly after an interruption. The ability to handle high power levels efficiently is essential for reliable grid operations, especially in times of stress when rapid restoration is necessary.

Choosing this answer reflects a solid understanding of how high voltage transmission systems function, emphasizing their significance in maintaining system reliability and improving restoration efforts.