Contingency Analysis & Reliability

Question 1

Which of the following defines the acceptable operating boundaries for the transmission system?

• CPS 1&2
• DCS
• INLs
• SOLs

Answer 1

SOLs

Question 2

Which of the following would result if there was a bad State Estimator solution?

• Voltage Collapse
• EMS bogged down
• ATC would be incorrect
• Contingency Analysis would be incorrect

Answer 2

Contingency Analysis would be incorrect

Question 3

If your system experiences an operating security limit violation, as an operator you are supposed to return your transmission system to within its limits as soon as possible, but no longer than how many minutes?

Answer 3

30 minutes

Question 4

What is the major role of the EMS state Estimator?

a. Calculates SE values based on the telemetered data and system model
b. Establishes the values that the system operator must operate within
c. Identifies the contingencies that exist on the power system
d. Estimates the system load that is anticipated at the peak of the day

Answer 4

a. Calculates SE values based on the telemetered data and system model

Question 5

The Contingency Analysis program identifies that there is a contingency on the system and provides a list of mitigating actions, what should the system operator do?

a. Request the operations support group to restart the EMS
b. Cancel all clearances across the system
c. Implement the actions immediately
d. Verify the Contingency analysis results before implementing actions

Answer 5

d. Verify the Contingency analysis results before implementing actions

Question 6

If a system operator is required to control its transmission facilities on a pre-contingency basis, which of the following actions would be appropriate if a system study indicated a potential emergency limit violation?

a. Shift generation to eliminate the concern
b. Reduce system frequency in order to reduce system load
c. Request an EEA 3 from the Reliability Coordinator
d. Reduce all interchange transactions to 0 regardless of their impact on the violation

Answer 6

a. Shift generation to eliminate the concern

Question 7

What’s the RCIS?

Answer 7

Reliability Coordinator Information System. The chat group where RCs share important information items like emergency notices or other major events.