Основні поняття
Building sector retrofits can mitigate ERCOT electricity shortfalls during extreme weather events like Winter Storm Uri.
Анотація
ERCOT faced significant electricity shortfalls during Winter Storm Uri, impacting infrastructure and causing power outages. The study analyzed the energy performance of residential and commercial buildings in ERCOT. Retrofit scenarios with efficiency upgrades, electrification upgrades, and combined efficiency + electrification upgrades were modeled. The electrification scenario with air-source heat pumps (ASHPs) increased peak demand during the storm due to diminishing ASHP efficiency at very low temperatures. The efficiency package reduced peak demand on storm days significantly. The efficiency + electrification package lowered peak demand as well. Overall, these scenarios could lower summer daily peak demand and annual electricity consumption. Building heating demand in Texas is sensitive to cold temperatures due to inefficient building envelopes and reliance on electric heating systems. ASHPs' efficiency decreases as outdoor temperatures drop, leading to increased demand for electric resistance heating systems during severe cold weather events.
Статистика
家庭と商業ビルの電力需要は、冬の嵐Uri中にピークを迎えました。
電化シナリオでは、ピーク需要が増加し、効率が低下しました。
効率パッケージは、嵐の日にピーク需要を大幅に削減しました。
効率+電化パッケージもピーク需要を削減しました。
これらのシナリオは夏のデイリーピーク需要と年間電力消費量を低下させる可能性があります。
Цитати
"ASHP systems would have been particularly effective at reducing daily peak demand during summer months by delivering efficiency improvements over legacy air conditioning equipment."
"During Winter Storm Uri, the electrification upgrade package would have increased peak demand to 117.5 GW from 88.7 GW for the baseline scenario."
"The efficiency package would have reduced total 2021 ERCOT electricity consumption by 5.9% and dampened the effect of both cold and hot temperatures on electricity demand."