US 12,113,360 B2
Method and device for forecasting electric load, and electronic device
Decheng Wang, Shanghai (CN); Peng Ding, Shanghai (CN); Weikun Wu, Shanghai (CN); Haowen Ren, Shanghai (CN); Yuan Feng, Shanghai (CN); Wei Song, Shanghai (CN); Guopeng Zhou, Shanghai (CN); Zonglin Cai, Shanghai (CN); Xiao Yan, Shanghai (CN); and Enhai Zhao, Shanghai (CN)
Assigned to SHANGHAI MAKESENS ENERGY STORAGE TECHNOLOGY CO., LTD., Shanghai (CN)
Filed by Shanghai Makesens Energy Storage Technology Co., Ltd., Shanghai (CN)
Filed on Sep. 6, 2023, as Appl. No. 18/242,558.
Claims priority of application No. 202211173100.5 (CN), filed on Sep. 26, 2022.
Prior Publication US 2024/0113519 A1, Apr. 4, 2024
Int. Cl. H02J 3/00 (2006.01); G06Q 50/06 (2024.01)
CPC H02J 3/003 (2020.01) [G06Q 50/06 (2013.01); H02J 2203/20 (2020.01)] 7 Claims
OG exemplary drawing
 
1. A method for forecasting an electric load, comprising:
acquiring historical load data prior to a forecast date, wherein the historical load data comprises load values at a plurality of times;
generating a load sequence based on the historical load data;
performing variational mode decomposition on the load sequence, to obtain a plurality of intrinsic mode components and a residual that are corresponding to the load sequence;
inputting the plurality of intrinsic mode components and the residual into respective forecasting models, and determining a load value on the forecast date based on forecasting results of all the forecasting models; and
controlling an integrated energy management system to start or stop on the forecast date based on the load value on the forecast date;
wherein the generating the load sequence based on the historical load data comprises:
converting the historical load data into a historical load sequence; and
denoising the historical load sequence to generate the load sequence, wherein the denoising the historical load sequence to generate the load sequence comprises:
performing n rounds of decomposition on a target sequence until a cycle ends, wherein the target sequence of a first round is the historical load sequence, and n is the number of the intrinsic mode components; and
generating the load sequence by combining a low-frequency sequence Ln in a last round and high-frequency sequences newly generated in all the n rounds, wherein an i-th round of decomposition comprises: decomposing a target sequence Li-1 of the i-th round into a low-frequency sequence Li and a high-frequency sequence Hi, wherein the low-frequency sequence Li is a low-frequency component of the target sequence Li-1, and the high-frequency sequence Hi is a high-frequency component of the target sequence Li-1; retaining a part of the high-frequency sequence Hi that is not smaller than a preset threshold, and newly generating a high-frequency sequence H′i;
and determining the low-frequency sequence Li of the i-th round as the target sequence in a next round until the cycle ends.