NERC NERC Protection and Control Systems

Question 1

Which NERC standard establishes maintenance and testing requirements for protection systems?

Accepted Answer

PRC-005

Answer

PRC-005 requires transmission owners, generator owners, and distribution providers to maintain and test BES protection systems on defined intervals.

Question 2

Under NERC PRC-005, what is the maximum allowable maintenance interval for a microprocessor-based relay with communication-assisted trip capability?

Accepted Answer

6 years

Answer

PRC-005 allows up to a 6-year maintenance interval for microprocessor-based relays with monitoring that verifies the communication-assisted trip function.

Question 3

What is the purpose of NERC standard PRC-019?

Accepted Answer

Coordination of voltage regulating controls with protection systems

Answer

PRC-019 requires that generator voltage regulating system controls be coordinated with the generator's protection systems to prevent conflicting operations.

Question 4

A 'Single Point of Failure' in a protection system is significant under NERC because:

Accepted Answer

It means one component failure can prevent the system from clearing a fault, risking cascading outages

Answer

A single point of failure in protection systems means one component failure can prevent fault clearing, increasing the risk of cascading outages on the BES.

Question 5

Which NERC standard addresses out-of-step protection for the bulk electric system?

Accepted Answer

PRC-026

Answer

PRC-026 requires that load-responsive phase protection relays be set so they do not operate during stable power swings.

NERC - North American Electric Reliability Corporation Practice Test

NERC - North American Electric Reliability Corporation Practice Test

NERC NERC Protection and Control Systems