SOPD Load Forecasting & Energy Scheduling 4

Question 1

Which forecasting approach uses historical load data from similar days to predict future load?

Accepted Answer

Analog day method

Answer

The analog day method identifies historical days with similar weather, calendar, and economic conditions and uses their actual load profiles to predict upcoming demand.

Question 2

Pumped storage hydro scheduling is typically optimized by:

Accepted Answer

Pumping during off-peak low-cost periods and generating during peak high-value periods

Answer

Pumped storage is optimized by pumping when energy is cheap (off-peak) and generating when energy is expensive (peak), capturing the price spread as economic value.

Question 3

A system operator's load forecast shows a duck curve pattern. This means:

Accepted Answer

Net load dips midday due to solar generation then ramps steeply in the evening

Answer

The duck curve describes net load (total load minus solar) that dips deeply midday as solar output peaks, then ramps steeply as solar drops and evening demand rises.

Question 4

Which resource is MOST appropriate to address a rapid 15-minute load ramp identified in a short-term forecast?

Accepted Answer

Fast-ramping combustion turbines or demand response resources

Answer

Fast-ramping resources such as gas combustion turbines or demand response can respond within minutes, making them ideal for covering rapid load changes.

Question 5

When calculating load responsibility for a capacity planning study, an operator includes:

Accepted Answer

Coincident peak load plus a planning reserve margin

Answer

Capacity planning uses coincident peak load plus a reserve margin (typically 15-20%) to ensure adequate resources are available under stressed conditions.

(SOPD) System Operator/Power Dispatching Practice Test

(SOPD) System Operator/Power Dispatching Practice Test

SOPD Load Forecasting & Energy Scheduling 4