NERC NERC Interconnection and Balancing Operations

Question 1

Which NERC standard requires Balancing Authorities to maintain frequency within defined limits?

Accepted Answer

BAL-001

Answer

BAL-003

Answer

BAL-005

Answer

IRO-010

Question 2

What is the nominal frequency of the Eastern, Western, and Texas (ERCOT) Interconnections in North America?

Accepted Answer

60 Hz

Answer

50 Hz

Answer

55 Hz

Answer

65 Hz

Question 3

Under NERC BAL-003, what is the purpose of the Frequency Response Obligation (FRO)?

Accepted Answer

To ensure each Balancing Authority contributes sufficient primary frequency response to arrest frequency decline after a generation loss

Answer

To require generators to ramp up output within 10 minutes of a dispatch signal

Answer

To mandate that BAs purchase frequency regulation products in organized markets

Answer

To set the maximum permissible frequency deviation before load shedding is triggered

Question 4

What does 'Automatic Generation Control' (AGC) do in a Balancing Authority's control area?

Accepted Answer

Continuously adjusts generator output to maintain scheduled tie-line flows and area control error at zero

Answer

Automatically installs new generation resources when demand exceeds supply

Answer

Controls the automatic tap changers on substation transformers

Answer

Automatically issues emergency alerts when frequency drops below 59.5 Hz

Question 5

The 'Area Control Error' (ACE) in a Balancing Authority represents:

Accepted Answer

The difference between actual and scheduled interchange plus the BA's share of frequency deviation

Answer

The maximum allowable current on a transmission line before a trip

Answer

The error rate in SCADA telemetry data for the BA's footprint

Answer

The difference between bid-in capacity and actual generator output

Question 6

Under NERC IRO-006, Reliability Coordinators are required to have which type of agreements in place?

Accepted Answer

Reliability Coordinator Information Exchange Agreements with adjacent RCs

Answer

Power purchase agreements with neighboring generators

Answer

Interconnection agreements with large industrial customers

Answer

Memoranda of understanding with FERC and state regulators