Which of the following should not be a consideration when trying to maintain normal transmission voltage during a system restoration?

When maintaining normal transmission voltage during system restoration, it is crucial to consider the operational integrity and safety of the electrical system. Bypassing under voltage relay contacts at all transmission substations is problematic because these relays are designed to protect the system from under-voltage conditions by disconnecting equipment or taking other protective measures. Ignoring these protections can lead to uncontrolled voltage fluctuations, increased risk of equipment damage, and may compromise the stability of the entire grid.

In contrast, the other considerations listed reflect valid aspects of managing voltage levels. The removal of certain reactive resources to prevent excessive voltage is pertinent because too much reactive power can cause overvoltage conditions. Awareness of the effects of energizing high voltage cables, especially at the end of a long system, is essential as this can impact voltage levels dramatically. Lastly, understanding the capability of generators to provide or absorb reactive power is vital for voltage regulation and stability during restoration efforts. Overall, looking after the operational settings that ensure the safety and stability of the transmission network is foundational during the restoration phase.