SOPD Emergency Procedures 5

Question 1

During a major storm, multiple transmission lines trip in rapid succession. What concept describes this type of failure progression?

Accepted Answer

Cascading outage

Answer

A cascading outage is a sequence where each successive failure increases stress on remaining elements, triggering further trips in a self-reinforcing chain.

Question 2

An operator is directed to implement an 'emergency operating procedure' (EOP). Which statement is TRUE about EOPs?

Accepted Answer

EOPs are pre-approved plans that operators execute without needing additional management approval during the emergency

Answer

EOPs are pre-approved procedures that operators are trained and authorized to execute immediately during emergencies without waiting for additional approvals.

Question 3

What is the role of the 'Reliability Coordinator' (RC) during a regional emergency?

Accepted Answer

To have the widest view of the interconnection and coordinate emergency actions across multiple transmission operators

Answer

The RC has a broad system view and coordinates across multiple entities to direct actions that preserve reliability across the interconnection.

Question 4

A system operator notices that voltage at a critical 500 kV bus has dropped to 480 kV during heavy loading. What is the BEST immediate corrective action?

Accepted Answer

Place additional reactive power resources in service (capacitor banks, SVCs, or generators in AVR mode)

Answer

Low voltage is caused by insufficient reactive power; the correct remedy is to supply additional VArs from available reactive resources.

Question 5

When restoring a black start unit to energize a transmission path, which sequence is correct?

Accepted Answer

Energize transmission line, pick up auxiliary load on cranking path, then synchronize to the larger system

Answer

Black start restoration requires energizing the cranking path first, picking up enough load to stabilize the unit, then carefully synchronizing to expand the energized island.

(SOPD) System Operator/Power Dispatching Practice Test

(SOPD) System Operator/Power Dispatching Practice Test

SOPD Emergency Procedures 5