Transmission Operations - C Flashcards
When possible, manual load shedding can be activated to prevent automatic load shedding for what purpose?
A. To shed non-critical loads first
B. To prepare for emergency
C. To arrest frequency decline
D. To increase reserves
C. To arrest frequency decline
What is a capacity benefit margin?
A. Transmission capacity set aside to back up the loss of generation
B. The amount of installed generation above the system peak demand forecast.
C. The amount of quick start generation capacity.
D. The unloaded and available on line generation capability
A. Transmission capacity set aside to back up the loss of generation.
Which of the following is an advantage of coordinating planned transmission outages?
A. Keeping information away from marketers
B. Increasing transmission overloads
C. Ensure system reliability
D. Not having to post on OASIS
C. Ensure system reliability
Which type of special operating procedure is implemented to relieve an overloaded transmission path?
A. ISO procedure
B. Reliability Coordinator procedure
C. Operating Security Limit procedure
D. Transmission Line-Loading Relief (TLR) procedure
D. Transmission Line-Loading Relief (TLR) procedure
What amount of firm load shedding would require a company to complete a NERC IROL & Preliminary Disturbance Report form?
A. 1% of yearly peak
B. 100 MW
C. 5% of yearly peak
D. 10 MW
B. 100 MW
When a greater than normal amount of the customer load is drawing power at the same time, the condition is known as a:
A. Nominal/actual load interchange
B. Loss of load diversity
C. Classical voltage collapse
D. Transient voltage collapse
B. Loss of load diversity
Which of the following activities would NOT be included in the procedures for Transmission reliability?
A. Planned outages of transmission elements
B. Equipment ratings
C. Switching transmission elements
D. Ancillary service pricing
D. Ancillary service pricing
What Operating Security Limit should you adhere to if the thermal limit, Voltage limit, and angle stability limit are all different values?
A. Angle stability limit
B. Most constraining of the three
C. Thermal limit
D. Voltage limit
B. Most constraining of the three
Which of the following actions is used to prevent voltage collapse when reactive resources are insufficient?
A. Lower transmission voltage regulator settings
B. Implement load reduction
C. Reduce generator output
D. Offset scheduled frequency
B. Implement load reduction
Voltage reduction, to reduce load magnitude, should not be attempted on the transmission system unless:
A. The transmission system is isolated from the interconnection
B. The transmission system voltage is less than 5 below nominal
C. The transmission system is heavily loaded
D. The transmission system voltage is greater than 5 above nominal
A. The transmission system is isolated from the interconnection
Which of these listed can provide operating reserve?
A. Tap changers
B. Voltage regulators
C. Capacitor banks
D. Interruptible load
D. Interruptible load
When possible, a system operator should try to use which of the following to energize high voltage transmission lines?
A. The strongest source
B. The largest breaker
C. The weakest source
D. A generating station
A. The strongest source
Your system configuration presents you with a situation of having two parallel lines between two stations. The lines have different ratings. Line A has a rating of 250 MVA, while line B has a rating of 200 MVA. Based on the line ratings, what is the first contingency transfer capability between the two stations?
A. 250 MVA
B. 50 MVA
C. 450 MVA
D. 200 MVA
D. 200 MVA
