What is the maximum time a Transmission Operator has to return its transmission system within Interconnection Reliability Operating Limit (IROL) after limits are exceeded?

What is the maximum time a Transmission Operator has to return its transmission system within Interconnection Reliability Operating Limit (IROL) after limits are exceeded?

• A. 15 minutes
• B. 30 minutes
• C. 60 minutes
• D. 120 minutes

Answer: (B)

When a Transmission Operator exceeds the Interconnection Reliability Operating Limit (IROL), they are required to return the transmission system to within safe operating limits as quickly as possible to maintain system reliability and prevent cascading failures or outages. The standard established by NERC stipulates that the maximum time allowed for a Transmission Operator to restore their system within the IROL is 30 minutes. This provision ensures that operators remain vigilant and responsive to limits that, if breached, can jeopardize the reliability of the electric grid. The timeframe reflects a balance between operational flexibility and the critical need to maintain grid stability.

When a Transmission Operator exceeds the Interconnection Reliability Operating Limit (IROL), they are required to return the transmission system to within safe operating limits as quickly as possible to maintain system reliability and prevent cascading failures or outages. The standard established by NERC stipulates that the maximum time allowed for a Transmission Operator to restore their system within the IROL is 30 minutes. This provision ensures that operators remain vigilant and responsive to limits that, if breached, can jeopardize the reliability of the electric grid. The timeframe reflects a balance between operational flexibility and the critical need to maintain grid stability.