SOPD Grid Reliability 2

Question 1

Which NERC reliability standard specifically addresses transmission planning to ensure the BES can withstand contingency events?

Accepted Answer

TPL-001-4

Answer

TPL-001-4 (Transmission System Planning Performance Requirements) establishes planning events and performance requirements for the Bulk Electric System.

Question 2

In the context of grid reliability, what does 'N-1 contingency' mean?

Accepted Answer

The grid must survive the loss of any single element while serving load

Answer

N-1 contingency means the power system must continue operating reliably following the sudden loss of any single bulk power system element (generator, line, or transformer).

Question 3

A power system operator observes frequency at 59.85 Hz. What is the most immediate concern?

Accepted Answer

Load is exceeding generation, risking further frequency decline

Answer

Frequency below 60 Hz indicates load exceeds generation; if not corrected, frequency will continue to drop, potentially triggering underfrequency load shedding relays.

Question 4

What is the purpose of Operating Reserve — Spinning (also called Synchronized Reserve)?

Accepted Answer

To provide immediate active power response to frequency deviations using already-synchronized generation

Answer

Spinning reserve consists of generation capacity already synchronized to the grid that can rapidly increase output to arrest frequency decline following a loss of generation.

Question 5

Which of the following best describes a 'Remedial Action Scheme' (RAS)?

Accepted Answer

An automated protection system designed to detect abnormal conditions and take pre-programmed corrective actions

Answer

A Remedial Action Scheme (also called Special Protection System) automatically detects system conditions and initiates pre-determined actions such as load shedding or generation tripping to preserve stability.

(SOPD) System Operator/Power Dispatching Practice Test

(SOPD) System Operator/Power Dispatching Practice Test

SOPD Grid Reliability 2