Reliability Coordinator

Question 1

Why is the RC purview so broad? (2)

Answer 1

1. Reliability of the wide-area takes precedence over a single local area.
2. It must be able to calculate Interconnection Reliability Limits that involves system and facility operating parameters beyond its own area and within its area.

Question 2

In what way is the Transmission Operator differ with RC with respect to operating areas?

Answer 2

The TO is only concern with its operating area.

Question 3

How and when can the RC assist the TO? (2)

Answer 3

1. The RC can relieve operating equipment or facility overloads through transmission relief measures IF
2. Market based dispatch procedures were not adequate.

Question 4

Can the RC approve or deny tags?

Can the RC receive tags?

Answer 4

1. No and No.

Question 5

Can RC curtail tags?

Answer 5

Yes. 2. RC may curtail Interchange transactions until they are arranged and ready for implementation as Interchange Schedules.

Question 6

What does the RC’s Transmission loading relief requests be used to accomplished?

Answer 6

Transmission loading requests can reduce, remove, or halt flows or impending interchange transactions.

Question 7

The RC receives what from the BAs?

Answer 7

Dispatch plans

Question 8

What does the RC receive from Generators Operators and transmission operators?

Answer 8

Generation and Transmission maintenance schedules.

Question 9

The RC can deny what?

Answer 9

Outage requests.

Question 10

Who is usually responsible for reliability of local transmission systems? (2)

Answer 10

The Transmission Operator. However, the RC may issue a dispatch adjustment if aware of a potential SOL violation.

Question 11

The RC can do what during Real Time system reliability emergencies: (4)

Answer 11

1. Curtail Interchange Schedules.
   2) Direct redispatch to alleviate congestion.
   3) Ensure energy balance and Interconnection frequency.
   4) Directing load shedding.

Question 12

If the BA cannot achieve resource demand balance, the RC may: (4)

Answer 12

1. Invoke public appeals.
2. Demand-side management
3. Direct Load Shedding.
4. Voltage reduction

Question 13

Who is responsible for reliability of local transmission system in accordance with SOLs?

Answer 13

Transmission Operator.

Question 14

What is SOL?

Answer 14

System Operating Limits

Question 15

What can the Reliability Coordinator do if becomes aware of a potential SOL violation?

Answer 15

Issue a dispatch adjustment.

Question 16

Who is responsible for real-time system reliability?

Answer 16

The RC.

Question 17

What can the RC do to maintain real-time system reliability? (5)

Answer 17

1. Curtail Interchange Schedules.
2. Direct redispatch to alleviate congestion.
3. Mitigate energy and transmission emergencies.
4. Ensure energy balance and Interconnection frequency.
5. Direct Load Shedding.

Question 18

In emergencies and in collaboration with the BAs and TO, the RC can: (4)

Answer 18

1. Invoke public appeals
2. Voltage reductions.
3. demand-side management
4. load shedding if BA cannot achieve resource-demand balance.

Question 19

RC can direct and coordinate system restoration with who?

Answer 19

TO and BAs.