How does cold weather affect power system performance?

Under extreme cold scenario, low temperatures intensify the contradiction between supply and demand on the power system (Fig. 9). It is obvious to take the scale of the LOL and the rate of satisfied power demand as indicators to reflect the power system resilience and the system performance, respectively (Fig. 10).

Can high-share renewable power system reduce power output in extreme cold?

The case study of high-share renewable power system in Qinghai Province of China suggested that, in the extreme cold scenario, the power outputs slumped, such as the average solar power output decreased by 37.6 % compared with conventional scenario, while electricity load actually increased by 14 %.

How can power planning improve long-term power system resilience?

Power planning for long-term power system resilience enhancement. Economically and effectively optimizing the multi-resource deployment. Long-term energy storage does not currently have a cost advantage. Graded local load reduction has the best economic performance.

How can a power system minimize disaster damage?

Under catastrophic extreme weather events such as earthquakes, floods and hurricanes, the power system's ability to minimize disaster damage is mainly concerned with rebuilding or restoring basic structure, and has little correlation with optimizing power supply structure and demand-side management.

Does cold weather affect power system resilience?

Assessment of power system resilience. In detail, extreme cold weather leads to an increase in air conditioning and heating loads for general industry, commerce, and residents, with a 150 %–200 % increase in total loads compared to the conventional scenario.

Does long-term energy storage have a cost advantage?

Long-term energy storage does not currently have a cost advantage. Graded local load reduction has the best economic performance. Frequent extreme weather seriously threatens the safe and stable operation of renewable energy power system.